HDAS-16, HDAS-8 12-Bit, 50kHz, Complete Data Acquisition Systems FEATURES „ Miniature 62-pin cermanic package „ 12-Bit resolution, 50kHz throughput „ Full-scale input range from 50mV to 10V „ Three-state outputs „ 16 S.E. or 8 differential input channels „ Auto-sequencing channel addressing „ MIL-STD-883 versions „ No missing codes „ Available in SMT or DIP packages GENERAL DESCRIPTION Internal HDAS circuitry includes: Using thin and thick-fi lm hybrid technology, DATEL offers complete low-cost „ Analog input multiplexer (16 S.E. or 8 diff.) data acquisition systems with superior performance and reliability. „ Resistor-programmable instrumentation amplifi er The HDAS-8 (with 8 differential input channels) and the HDAS-16 (with „ Sample-and-hold circuit complete with MOS hold capacitor 16 single-ended input channels) are complete, high-performance, 12-bit „ data acquisition systems in 62-pin SMT or DIP packages. Each HDAS may 10 Volt buffered reference be expanded up to 32 single-ended or 16 differential channels by adding „ 12-bit A/D converter with three-state outputs and control logic externalmultiplexers. Internal channel address sequencing is automatic after each conversion, or the user may supply external channel addresses. 54 40 95847 4 456 39 40 38 36 37 35 CH0 HI /CH0 4 BIT 1 (MSB) CH1 HI /CH1 3 34 BIT 2 THREE CH2 HI /CH2 2 STATE 33 BIT 3 32 CH3 HI /CH3 1 BIT 4 I/A S/H 31 CH4 HI /CH4 62 EN (1-4) 16 CHANNEL 30 61 12-BIT BIT 5 CH5 HI /CH5 SINGLE ENDED A/D 29 60 BIT 6 CH6 HI /CH6 THREE OR CONVERTER 28 59 STATE BIT 7 CH7 HI /CH7 8 CHANNEL 27 58 BIT 8 CH0 LO /CH8 DIFFERENTIAL 57 26 EN (5-8) CH1 LO /CH9 ANALOG (HOLD) 56 25 BIT 9 CH2 LO /CH10 MULTIPLEXER 24 CH3 LO /CH11 55 THREE BIT 10 (START) 23 CH4 LO /CH12 54 STATE BIT 11 22 53 BIT 12 (LSB) CH5 LO /CH13 21 52 EN (9-12) CH6 LO /CH14 7 51 EOC CH7 LO /CH15 CONTROL MUX ADDRESS LOGIC REGISTER 12 11 10 9 6 8 19 16 15 1413 20 41 44 42 43 18 17 MUX MUX ADDRESS OUT ADDRESS IN Typical topology is shown. Figure 1. Functional Block Diagram DATEL, Inc. 11 Cabot Boulevard, MansŢ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 06 Oct 2015 MDA_HDAS-16/8.C02 Page 1 of 8 A1 A2 MUX ENABLE A4 A8 AMP IN HI AMP IN LO RDELAY RGAIN HI STROBE RGAIN LO LOAD ANA SIG COM RA1 ANA SIG COM RA2 RA4 S/H OUT RA8 CLEAR +10V REF OUT BIPOLAR INPUT ANA SIG COM GAIN ADJUST –15V SUPPLY OFFSET ADJUST ANA PWR COM +15V SUPPLY +5V SUPPLY DIG COM THREE STATE OUTPUT DATA (BUFFERED) HDAS-16, HDAS-8 12-Bit, 50kHz, Complete Data Acquisition Systems –55 to +125°C — — ±1 LSB ABSOLUTE MAXIMUM RATINGS Differential Nonlinearity PARAMETERS MIN. TYP. MAX. UNITS 0 to +70°C — — ±1 LSB –0.5 — +18 Volts +15V Supply (pin 43) –40 to +100°C — — ±1 LSB +0.5 — –18 Volts –15V Supply (pin 44) –55 to +125°C — — ±1 LSB –0.5 — +7 Volts +5V Supply (pin 18) Over the operating temperature range No Missing Codes –35 — +35 Volts Analog Inputs c PERFORMANCE (CONT.) MIN. TYP. MAX. UNITS –0.5 — +7 Volts Digital Inputs Unipolar Zero Error Thermal Resistances: +25°C e — — ±0.1 %FSR Junction-Case — — 15 °C/Watt –40 to +100°C — — ±0.25 % FSR Case-Ambient — — 15 °C/Watt –55 to +125°C — — ±0.3 %FSR Junction-Ambient — — 30 °C/Watt Bipolar Zero Error — — 300 °C Lead Temp. (10 seconds) +25°C e — — ±0.1 %FSR FUNCTIONAL SPECIFICATIONS –40 to +100°C — — ±0.25 % FSR (The following specifi cations apply over the operating temperature range and power –55 to +125°C — — ±0.3 %FSR supply range unless otherwise indicated.) Bipolar Offset Error ANALOG INPUTS MIN. TYP. MAX. UNITS +25°C e — — ±0.1 %FSR Signal Range, Unipolar –40 to +100°C — — ±0.25 % FSR Gain = 1 0 — +10 Volts –55 to +125°C — — ±0.3 %FSR Gain = 200 — — +50 mV Gain Error Signal Range, Bipolar +25°C e — — ±0.2 % Gain = 1 –10 — +10 Volts –40 to +100°C — — ±0.3 % FSR Gain = 200 –50 — +50 mV –55 to +125°C — — ±0.3 % Gain = 1 + (20kΩ/RGAIN) Input Gain Equation d DYNAMIC CHARACTERISTICS — — ±0.1 % Gain Equation Error Acquisition Time, Gain = 1 Instrumentation AmpliŢ er +25°C — 9 10 μs 8 12 Input Impedance 10 10 — Ohms –40 to +100°C — — 15 μs Input Bias Current: –55 to +125°C — — 15 μs +25°C — — ±250 pA — — 500 ns Aperture Delay Time –55 to +125°C Doubles every 10°C Aperture Uncertainty — — 1 ns Input Offset Current: S/H Droop Rate — — ±1 μV/μs +25°C — — ±1 nA –55 to +125°C Doubles every 10°C Feedthrough — — ±0.01 % Multiplexer A/D Conversion Time Channel ON Resistance — — 2 kΩ +25°C — 6 8 μs Channel OFF Input Leakage — ±30 — pA –40 to +100°C — — 10 μs Channel OFF Output Leakage — ±1 — nA –55 to +125°C — — 10 μs Channel ON Leakage — ±100 — pA Throughput Rate Input Capacitance +25°C 50 66 — kHz HDAS-16, Channel ON — 100 — pF –40 to +100°C 33 — — kHz HDAS-8, Channel ON — 50 — pF –55 to +125°C 33 — — kHz +25°C, Channel OFF — 5 — pF DIGITAL INPUTS Input Offset Voltage Logic Levels — — ±2 mV Gain = 1, +25°C (Pins 8, 13–16, 19–21, 26, 31) –55 to +125°C (max.) (±3ppm/°C x Gain) ±20ppm/°C Logic 1 +2.0 — +5.5 Volts — — ±100 mV Gain = 1000, +25°C Logic 0 0 — +0.8 Volts –55 to +125°C (max.) (±3ppm/°C x Gain) ±20ppm/°C (Pin 5) ±10 — — Volts Common Mode Range Logic 1 +4.0 — +5.5 Volts 70 82 — dB CMRR, Gain = 1, at 60Hz Logic 0 0 — +0.8 Volts Input Voltage Noise, Gain = 1 Logic Loading (Referred to input) — 150 200 μVrms (Pins 5, 8, 13–16, 19–21, 26, 31) — — –80 dB Logic 1 — — ±10 μA Channel Crosstalk Logic 0 — — ±10 μA PERFORMANCE 20 — — ns Multiplexer Address Set-upTime 12 — — Bits Resolution — 20 30 ns ENABLE to Data Valid Delay Integral Nonlinearity STROBE f 40 — — n 0 to +70°C — — ±1 LSB –40 to +100°C — — ±1 LSB DATEL, Inc. 11 Cabot Boulevard, MansŢ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 06 Oct 2015 MDA_HDAS-16/8.C02 Page 2 of 8 HDAS-16, HDAS-8 12-Bit, 50kHz, Complete Data Acquisition Systems OUTPUTS PIN NO. HDAS-16 HDAS-8 17 DIGITAL COMMON * Logic Levels (Output Data) 18 +5V SUPPLY * Logic 1 +2.4 — — Volts 19 LOAD * Logic 1 (pin 7) +2.5 — — Volts 20 CLEAR * Logic 0 — — +0.4 Volts 21 ENABLE (Bits 9–12) * (Pins 9, 10, 11, and 12) 22 BIT 12 (LSB) * 23 BIT 11 * Logic 1 +2.5 — — Volts 24 BIT 10 * Logic 0 — — +0.4 Volts 25 BIT 9 * Logic Loading 26 ENABLE (Bits 5–8) * Logic 1 — — –400 μA 27 BIT 8 * 28 BIT 7 * Logic 0 — — +4 mA 29 BIT 6 * OUTPUTS (CONT.) 30 BIT 5 * 31 ENABLE (Bits 1–4) * Internal Reference: 32 BIT 4 * Voltage, +25°C +9.99 +10.00 +10.01 Volts 33 BIT 3 * Drift — — ±20 ppm/°C 34 BIT 2 * External Current — — 1 mA 35 BIT 1 (MSB) * 36 GAIN ADJUST * Output Data Coding Straight binary (unipolar) or offset binary (bipolar) 37 OFFSET ADJUST * POWER REQUIREMENTS MIN. TYP. MAX. UNITS 38 BIPOLAR INPUT * Power Supply Ranges 39 SAMPLE/HOLD OUT * 40 +10V REFERENCE OUT * +15V Supply +14.25 +15.0 +15.75 Volts 41 ANALOG SIGNAL COMMON * –15V Supply –14.25 –15.0 –15.75 Volts 42 ANALOG POWER COMMON * +5V Supply +4.75 +5.0 +5.25 Volts 43 +15V SUPPLY Power Supply Currents 44 –15V SUPPLY * +15V Supply — — +33 mA 45 ANALOG SIGNAL COMMON * 46 ANALOG SIGNAL COMMON * –15V Supply — — –30 mA 47 RGAIN LOW * +5V Suppy — — +15 mA 48 RGAIN HIGH * — — 1.25 Watts Power Dissipation 49 AMP. IN HIGH  * 50 AMP. IN LOW  * PHYSICAL/ENVIRONMENTAL 51 CH15 IN CH7 LOW IN Operating Temp. Range, Case 52 CH14 IN CH6 LOW IN 0 — +70 °C MC Models 53 CH13 IN CH5 LOW IN 54 CH12 IN CH4 LOW IN –40 — +100 °C ME Models 55 CH11 IN CH3 LOW IN –55 — +125 °C MM/883 Models 56 CH10 IN CH2 LOW IN –65 — +150 °C Storage Temperature Range 57 CH9 IN CH1 LOW IN 58 CH8 IN CH0 LOW IN 1.4 ounces (39.7 grams) Weight 59 CH7 IN CH7 HIGH IN 62-pin cermanic DIP Package Type 60 CH6 IN CH6 HIGH IN Footnotes: 61 CH5 IN CH5 HIGH IN c Analog inputs will withstand ±35V with power on. If the power is off, the maximum 62 CH4 IN CH4 HIGH IN safe input (no damage) is ±20V. *Same as HDAS-16 d The gain equation error is guaranteed before external trimming and applies at gains Caution: Pins 49 and 50 do not have overvoltage protection; therefore, protected multiplexers, less than 50. This error increases at gains over 50. such as MPS’s MX-1606 and MX-808 are recommended. See the General Operation description. e Adjustable to zero. f STROBE pulse width must be less than EOC period to achieve maximum throughput TECHNICAL NOTES rate. 1. Input channels are protected to 20 Volts beyond the powersupplies. PIN NO. HDAS-16 HDAS-8 All digital output pins have one second short-circuit protection. 1 CH3 IN CH3 HIGH IN 2 CH2 IN CH2 HIGH IN 2. To retain high system throughput rates while digitizing low-level signals, 3 CH1 IN CH1 HIGH IN apply external high-gain amplifi ers foreach channel. MPS’s AM-551 is 4 CH0 IN CH0 HIGH IN suggested for such amplifi er-per-channel applications. 5 MUX ENABLE * 6 RDELAY * 3. The HDAS devices have self-starting circuits for free-running sequential 7 EOC * operation. If, however, in a power-upcondition the supply voltage slew rate 8 STROBE * is less than 3V per microsecond, the free running state might not be initial- 9 A8 MULTIPLEXER * ized. Apply a negative pulse to the STROBE, to eliminate this condition. 10 A4 ADDRESS * 11 A2 OUT * 4. For unipolar operation, connect BIPOLAR INPUT (pin 38) to S/H OUT (pin 39). 12 A1 * For bipolar operation, connect BIPOLAR INPUT (pin 38) to +10V REFERENCE 13 RA8 MULTIPLEXER * OUT (pin 40). 14 RA4 ADDRESS * 15 RA2 IN * 5. RDELAY may be a standard value 5% carbon composition or fi lm-type resistor. 16 RA1 * DATEL, Inc. 11 Cabot Boulevard, MansŢ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 06 Oct 2015 MDA_HDAS-16/8.C02 Page 3 of 8 HDAS-16, HDAS-8 12-Bit, 50kHz, Complete Data Acquisition Systems TECHNICAL NOTES continued 7. ANALOG SIGNAL COMMON, POWER COMMON and DIGITAL COMMON are connected internally. For optimal performance, tie all ground pins (17, 41, 6. RGAIN must be very accurate with low temperature coeffi cients. If neces- 42, 45, 46) directly to a large analog ground plane beneath the package. sary, fabricate the gain resistor from a precision metal-fi lm type in series with a low value trim resistor or potentiometer. The total resistor tempera- 8. For HDAS-16, tie pin 50 to a “signal source common” if possible. Other- ture coeffi cient must be no greater than ±10ppm/°C. wise tie pin 50 to pin 41 (ANA SIG COM). Table 1. Description of Pin Functions Table 2. Calibration Table FUNCTION LOGIC STATE DESCRIPTION UNIPOLAR RANGE ADJUST INPUT VOLTAGE DIGITAL INPUTS 0 to +5V ZERO +0.6mV GAIN +4.9982V STROBE 1 to 0 Initiates acquisition and conversion of analog signal 0 to +10V ZERO +1.2mV GAIN +9.9963V LOAD 0 Random address mode initiated on falling edge of STROBE BIPOLAR RANGE 1 Sequential address mode ±2.5V OFFSET –2.4994V GAIN +2.4982V CLEAR 0 Allows next STROBE pulse to reset MULTIPLEXER ADDRESS to CH0 overrid- ±5V OFFSET –4.9988V ing LOAD COMMAND GAIN +4.9963V MUX ENABLE 0 Disables internal multiplexer ±10V OFFSET –9.9976V GAIN +9.9927V 1 Enables internal multiplexer MUX ADDRESS IN Selects channel for random address mode 8, 4, 2, 1 natural binary coding Calibration Procedures 1. Offset and gain adjustments are made by connecting two 20k trim potenti- DIGITAL OUTPUTS ometers as shown in Figure 2. EOC (STATUS) 0 Conversion complete 2. Connect a precision voltage source to pin 4 (CH0 IN). If the HDAS-8 is used, 1 Conversion in process connect pin 58 (CH0 LOW IN) to analog ground. Ground pin 20 (CLEAR) and ENABLE (1–4) 0 Enables three-state outputs bits 1-4 momentarily short pin8 (STROBE). Trigger the A/D by connecting pin 7 (EOC) 1 Disables three-state outputs bits 1-4 to pin 8 (STROBE). Select proper value for RGAIN and RDELAY by referring to Table 3. ENABLE (5–8) 0 Enables three-state outputs bits 5-8 3. Adjust the precision voltage source to the value shown in Table 2 for the 1 Disables three-state outputs bits 5-8 unipolar zero adjustment (ZERO + 1/2LSB)or the bipolar offset adjustment ENABLE (9–12) 0 Enables three-state outputs bits 9-12 (–FS + 1/2LSB). Adjust the offset trim potentiometer so that the output code 1 Disables three-state outputs bits 9-12 fl ickers equally between 0000 0000 0000 and 0000 0000 0001. MUX ADDRESS OUT Output of multiplexer address register 4. Change the output of the precision voltage source to the value shown in 8, 4, 2, 1 natural binary coding Table 2 for the unipolar or bipolar gain adjustment (+FS – 1 1/2LSB). Adjust ANALOG INPUTS DESCRIPTION the gain trim potentiometer so that the output fl ickers equally between CHANNEL INPUTS Limit voltage to ±20V beyond power supplies 1111 1111 1110 and 1111 1111 1111. BIPOLAR INPUT For unipolar operation, connect to pin 39 (S/H OUT). For bipolar operation, connect to in 40 (+10V OUT) GAIN +15Vdc ADJUST AMP. IN LOW These pins are direct inputs to the instrumentation 36 20k AMP. IN HIGH amplifi er for external channel expansion beyond 16SE or 8D channels. 37 20k OFFSET ANALOG OUTPUTS ADJUST –15Vdc S/H OUT Sample/hold output +10V REFERENCE OUT Buffered +10V reference output Figure 2. External Adjustment ADJUSTMENT PINS GENERAL OPERATION ANALOG SIGNAL COMMON Low level analog signal return The HDAS devices accept either 16 single-ended or 8 differential input signals. GAIN ADJUSTMENT External gain adjustment. See calibration instructions. For single-ended circuits, the AMP INLOW (pin 50) input to the instrumentation amplifi er must terminate at ANALOG SIGNAL COMMON (pin 41). For differential OFFSET ADJUSTMENT External offset adjustment. See calibration instructions. circuits, both the HIGH and LOW signal inputs must terminate externally for RGAIN Optional gain selection point. Factory adjusted for G = 1 each channel. Tie unused channels to the ANALOG SIGNAL COMMON (pin 41). when left open. To obtain additional channels, connect external multiplexers to the AMP IN RDELAY Optional acquisition time adjustment when connected HIGH (pin 49) and AMP IN LOW (pin 50). Using this scheme, the HDAS-16 can to +5V. Factory adjusted for 9μs. Must be connected to +5V either directly or through a resistor. provide 32 single-ended expansion channels while the HDAS-8 can provide DATEL, Inc. 11 Cabot Boulevard, MansŢ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 06 Oct 2015 MDA_HDAS-16/8.C02 Page 4 of 8 HDAS-16, HDAS-8 12-Bit, 50kHz, Complete Data Acquisition Systems up to 16 differential expansion channels. MPS’s MX Series multiplexers are driving the EOC output high.The HDAS devices can be confi gured for either recommended. bipolar or unipolar operation (see Table 2). The conversion is complete within a maximum of 10 microseconds. The EOC now returns low, the data is valid and The acquisition time is the amount of time the multiplexer, instrumenta- sent to the three-state output buffers.The sample/hold amplifi er is now ready tion amplifi er, and sample/hold require to settle within a specifi ed range of to acquire new data.The next falling edge of the STROBE pulse repeats the accuracy after STROBE (pin 8)goes low. The acquisition time period can be process for the next conversion. observed by measuring how long EOC is low after the falling edge of STROBE (see Figure 4). For higher gains, increase the acquisition time. Do this by con- Multiplexer Addressing necting a resistor from RDELAY (pin 6) to +5V (pin 18). An external resistor, The HDAS devices can be confi gured in either random orsequential address- RGAIN, can be added to increase the gain value. The gain is equal to 1 without ing modes. Refer to Table 5 and the subsequent descriptions. The number of an RGAIN resistor. Table 3 refers to the appropriate RDELAY and RGAIN resis- channels sequentially addressed can be truncated using the MUX ADDRESS tors required for various gains. OUT(pins 9, 10, 11 and 12) and appropriate decoding circuitry forthe highest channel desired. The decoding circuit can drive the CLEAR (pin 20) function low The HDAS devices enter the hold mode and are ready for conversion as to reset the addressing to channel 0. soon as the one-shot (controling acquisition time) times out. An internal clock is gated ON, and a start-convert pulse is sent to the 12-bit A/D converter, Table 3. Input Range Parameters (Typical) INPUT SYSTEM ACCURACY RANGE c d GAIN RGAIN (Ω) RDELAY (Ω) e THROUGHPUT f (% OF FSR) ±10V 1 OPEN 0 (SHORT) 66.6kHz ±0.009 ±5V 2 20.0k 0 (SHORT) 66.6kHz ±0.009 ±2.5V 4 6.667k 0 (SHORT) 66.6kHz ±0.009 ±1V 10 2.222k 0 (SHORT) 66.6kHz ±0.009 ±200mV 50 408.2 7k 40.0kHz ±0.010 ±100mV 100 202.0 21k 25.6kHz ±0.011 ±50mV 200 100.5 51k 14.5kHz ±0.016 Notes d Full scale can be accommodated for analog signal ranges of ±50mV to RGAIN (Ω) = 20,000 ±10V. (GAIN – 1) e For gains between 1 and 10, RDELAY (pin 6) must be shorted to +5V RDELAY (Ω) = [Total Acquisition Delay (μs) x 1000] – 9000 (pin 18). c The analog input range to the A/D converter is 0 to +10V for unipolar f Throughput period equals acquisition and settling delay, plus A/D con- signals and ±10V for bipolar signals. version period (10 microseconds maximum). Table 4. Output Coding Table 5. Mux Channel Addressing PIN UNIPOLAR STRAIGHT BINARY MUX ADDRESS INPUT 0 to +10V 0 to +5V MSB LSB 5 13 14 15 16 +FS – 1LSB +9.9976 +4.9988 1111 1111 1111 MUX RA8 RA4 RA2 RA1 +1/2FS +5.0000 +2.5000 1000 0000 0000 ENABLE +1LSB +0.0024 +0.0012 0000 0000 0001 0 X X X X NONE 1 0 0 0 0 0 ZERO 0.0000 0.0000 0000 0000 0000 1 0 0 0 1 1 BIPOLAR OFFSET BINARY* 1 0 0 1 0 2 HDAS-8 INPUT ±10V ±5V MSB LSB 1 0 0 1 1 3 (3-BIT ADDRESS) 1 0 1 0 0 4 +FS – 1LSB +9.9951 +4.9976 1111 1111 1111 1 0 1 0 1 5 +1/2FS +5.0000 +2.5000 1100 0000 0000 1 0 1 1 0 6 +1LSB +0.0049 +0.0024 1000 0000 0001 1 0 1 1 1 7 ZERO 0.0000 0.0000 1000 0000 0000 1 1 0 0 0 8 1 1 0 0 1 9 –FS + 1LSB –9.9951 –4.9976 0000 0000 0001 1 1 0 1 0 10 HDAS-16 –FS –10.000 –5.0000 0000 0000 0000 1 1 0 1 1 11 (4-BIT * For 2’s complement coding, add an inverter to the MSB line. 1 1 1 0 0 12 ADDRESS) 1 1 1 0 1 13 1 1 1 1 0 14 1 1 1 1 1 15 DATEL, Inc. 11 Cabot Boulevard, MansŢ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 06 Oct 2015 MDA_HDAS-16/8.C02 Page 5 of 8 ON CHANNEL HDAS-16, HDAS-8 12-Bit, 50kHz, Complete Data Acquisition Systems Random Addressing Input Voltage Protection Set pin 19 (LOAD) to logic 0. The next falling edge of STROBE will load the MUX As shown in Figure 3, the multiplexer has reversed biased diodes which CHANNEL ADDRESS present on pin 13 to pin 16. Digital address inputs must be protect the input channels from being damaged by overvoltage signals. The stable 20ns before andafter falling edge of the STROBE pulse. HDAS input channels areprotected up to 20V beyond the supplies and can be increasedby adding series resistors (Ri) to each channel. The input resistor Free Running Sequential Addressing must limit the current fl owing through the protection diodes to 10mA. Set pin 19 (LOAD) and pin 20 (CLEAR) to logic 1 or leave open. Connect pin 7 The value of Ri for a specifi c voltage protection range (Vp) can be calculated (EOC) to pin 8 (STROBE). The fallingedge of EOC will increment channel by the following formula: address. This means thatwhen the EOC is low, the digital output data is valid for theprevious channel (CHn – 1) rather than the channel indicated on Vp = (Rsignal + Ri + RON) (10mA)where RON = 2k MUX ADDRESS OUTPUT. The HDAS will continually scan all channels. NOTE: Increased input series resistance will increase multiplexer settling Example: CH4 has been addressed and a conversion takes place. The EOC time signifi cantly. goes low. That channel’s (CH4’s) data becomes valid, but MUX ADDRESS OUTPUT is now CH5. +15V Triggered Sequential Addressing CHn INPUT Ri R1 Set pin 19 (LOAD) and pin 20 (CLEAR) to logic 1 or leaveopen. Apply a falling INST. edge trigger pulse to pin 8 (STROBE).This negative transition causes the con- 1k 1k 10pF 100pF AMP. tents of the address counter to be incremented by one, followed by an R SIGNAL A/D conversion in 9 microseconds. ~ SIGNAL –15V Figure 3. Multiplexer Equivalent Circuit 40nsec min. STROBE EXTERNAL STROBE PULSE 40nsec min. 9μsec typ. 6μsec typ. CH0 CH12 DATA VALID DATA VALID EOC ACQUISITION CONVERSION ACQUISITION CONVERSION ACQUISITION CONVERSION CH0 CH0 CH1 CH1 CH12 CH12 LOAD t 2 t t , t t50nsec 1 1 2 CLEAR tt 20nsec min. RA8 RA4 RA2 RA1 CH12 SELECTED A8 40nsec min. A4 A2 A1 40nsec min. CH0 ADDRESSED CH1 ADDRESSED CH2 ADDRESSED CH12 ADDRESSED MODE CLEAR SEQUENTIAL (EOC TIED TO STROBE) RANDOM CODE MAY CHANGE OR DON'T CARE Figure 4. HDAS Timing Diagram DATEL, Inc. 11 Cabot Boulevard, MansŢ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 06 Oct 2015 MDA_HDAS-16/8.C02 Page 6 of 8 HDAS-16, HDAS-8 12-Bit, 50kHz, Complete Data Acquisition Systems Mechnical Dimensions INCHES (mm) 0.150 (3.810) 2.325 Dimension Tolerances (unless otherwise indicated): (59.055) 2 place decimal (.XX) ±0.010 (±0.254) 3 place decimal (.XXX) ±0.005 (±0.127) 1 21 Lead Material: Kovar alloy 62 Lead Finish: 50 microinches (minimum) gold plating over 100 microinches (nominal) nickel plating 1.100 1.415 MAX. (27.940) (35.94) 52 32 0.100 TYP. 0.150 0.235 MAX. (2.540) (3.810) (5.969) 2.00 ±0.008 (50.800) 0.200 MAX. (5.080) 0.190 MAX. (4.826) 0.020 ±0.002 0.040 0.150 1.100 ±0.008 0.150 (0.508) (1.016) (3.810) (27.940) (3.810) SEATING PLANE DIP PACKAGE 0.025 ±0.010 (0.635) 2.30 REF C L 1.000 1.000 .100 TYP 62x .050 1.220 .050 .450 1.250 1.40 REF C .900 L REF .100 TYP 62x .100 2.120 2.150 REF SMT PACKAGE .010 REF .020 REF .100 .050 REF REF DATEL, Inc. 11 Cabot Boulevard, MansŢ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 06 Oct 2015 MDA_HDAS-16/8.C02 Page 7 of 8 HDAS-16, HDAS-8 12-Bit, 50kHz, Complete Data Acquisition Systems ORDERING INFORMATION ORDERING INFORMATION Model Number Operating Temperature Package RoHS Compliant Model Number Operating Temperature Package RoHS Compliant 0 to +70°C DIP NO 0 to +70°C DIP NO HDAS-16MC HDAS-8MC -40 to +100°C DIP NO -40 to +100°C DIP NO HDAS-16ME HDAS-8ME -55 to +125°C DIP NO -55 to +125°C DIP NO HDAS-16MM HDAS-8MM -55 to +125°C DIP NO -55 to +125°C DIP NO HDAS-16/883 HDAS-8/883 0 to +70°C SMT NO 0 to +70°C SMT NO HDAS-16GC HDAS-8GC -40 to +100°C SMT NO -40 to +100°C SMT NO HDAS-16GE HDAS-8GE -55 to +125°C SMT NO -55 to +125°C SMT NO HDAS-16GM HDAS-8GM -55 to +125°C SMT NO -55 to +125°C SMT NO HDAS-16G/883* HDAS-8G/883 0 to +70°C DIP YES 0 to +70°C DIP YES HDAS-16MC-C HDAS-8MC-C -40 to +100°C DIP YES -40 to +100°C DIP YES HDAS-16ME-C HDAS-8ME-C -55 to +125°C DIP YES -55 to +125°C DIP YES HDAS-16MM-C HDAS-8MM-C -55 to +125°C DIP NO -55 to +125°C DIP NO HDAS-16MM-QL HDAS-8MM-QL -55 to +125°C DIP YES -55 to +125°C DIP YES HDAS-16/883-C HDAS-8/883-C 0 to +70°C SMT YES 0 to +70°C SMT YES HDAS-16GC-C HDAS-8GC-C -40 to +100°C SMT YES -40 to +100°C SMT YES HDAS-16GE-C HDAS-8GE-C -55 to +125°C SMT YES -55 to +125°C SMT YES HDAS-16GM-C HDAS-8GM-C -55 to +125°C SMT YES -55 to +125°C SMT YES HDAS-16G/883-C HDAS-8G/883-C Receptacle for PC board mounting can be ordered through AMP Inc., Part #3-331272-4 (Component Lead Spring Socket), 62 required. The MIL-STD-883 units are available under DESC Drawing Number 5962-8851404. Contact DATEL for MIL-STD-883 product specifi cations. *HDAS-16G/883 devices are delivered with solder-tin leads. ISO 9001 ISO 9001 REGISTERED DATEL is a registered trademark of DATEL, Inc. DATEL, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of 11 Cabot Boulevard, MansŢ eld, MA 02048-1151 USA licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. ITAR and ISO 9001/14001 REGISTERED © 2015 DATEL, Inc. www.datel.com • e-mail: help@datel.com 06 Oct 2015 MDA_HDAS-16/8.C02 Page 8 of 8