®® SHM-950 Miniature, High-Speed ±0.001% Sample-Hold Amplifi ers ADVANCED PRODUCT DATA FEATURES  18 bit accuracy  Small 8-pin DIP package  1.5μs max. acquisition time to ±0.001%  90ns max. sample-to-hold settling time to ±0.001%  70 V/μs slew rate  84dB feedthrough attenuation  ±25 picoseconds aperture uncertainty  280mW maximum power dissipation INPUT/OUTPUT CONNECTIONS GENERAL DESCRIPTION Pin Function DATEL’s SHM-950 is a high-speed, highly accurate sample/hold 1 +5v Digital Supply designed for precision, high-speed analog signal processing applica- tions. The SHM-950 features excellent dynamic specifi cations including 2 S/H Control a maximum acquisition time of only 1.5 microseconds for a 10V step to 3 Analog Input ±0.001%. 4 Analog Return Sample-to-hold settling time, to ±0.001% accuracy, is 90 nanosec- 5 –15v Supply onds maximum with an aperture uncertainty of ±25 picoseconds. The SHM-950 is a complete sample/hold circuit, containing a preci- 6 Analog Output sion MOS hold capacitor and a MOSFET switching confi guration which 7 +15v Analog Supply results in faster switching and better feedthrough attenuation. Addition- 8 Power Ground ally, a FET input amplifi er design allows faster acquisition and settling times while maintaining a considerably lower droop rate. –15V +15V +5V SUPPLY SUPPLY SUPPLY 51 7 2kΩ 100pF 2kΩ ANALOG INPUT 3 6 ANALOG OUTPUT SWITCH S/H CONTROL 2 DRIVER 8 4 POWER ANALOG GROUND RETURN Figure 1. Functional Block Diagram DATEL 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA Tel: (508) 339-3000 www.datel.com e-mail: help@datel.com 12 Sep 2012 MDC_SHM-950.B03 Page 1 of 3 ®® SHM-950 Miniature, High-Speed ±0.001% Sample-Hold Amplifi ers Absolute Maximum Ratings POWER REQUIREMENTS MIN. TYP. MAX. UNITS ±15V Supply Voltages ±18V Voltage Range +5V Supply Voltages –0.5V to +7V +15V Supply +11.5 +15.0 +15.5 Volts Analog Input ±18V –15V Supply –11.5 –15.0 –15.5 Volts Digital Input –0.5V to +5.5V +5V Supply +4.75 +5.0 +5.25 Volts Output Current ±55 mA Power Supply Rejection Ratio — 110 100 dB Quiescent Current Drain Functional Specifi cations +15V Analog Supply — +7 +9 mA (Apply over the operating temperature range with ±15V and +5V supplies –15V Supply — –7 –9 mA unless otherwise specifi ed.) +5V Supply — +1 +1.5 mA Power Consumption — 215 280 mW ANALOG INPUT/OUTPUT MIN. TYP. MAX. UNITS PHYSICAL/ENVIRONMENTAL Input/Output Voltage Range ±15V Nominal Supply ±10 ±11.5 — Volts Operating Temp. Range, Case ±12V Nominal Supply ±7 ±8.5 — Volts SHM-950MC 0 to +70°C Input Impedance 1.75 2 — kΩ SHM-950ME –40 to +100°C Output Current — — ±40 mA Storage Temperature Range –65 to +150°C Output Impedance — 0.1 — Ω Thermal Impedance Capacitive Load 100 250 — pF θjc 15°C/W DIGITAL INPUT θca 35°C/W Input Logic Levels Package Type 8-pin ceramic DIP Logic 1 +2.0 — — Volts Footnotes: Logic 0 — — +0.8 Volts ➀ Full Scale (FS) = 10V. Full Scale Range (FSR) = 20V. Loading ➁ Sample-to-hold offset error (pedestal) is constant regardless of input/output level. Logic 1 — — +5 µA Logic 0 — — –5 µA TRANSFER CHARACTERISTICS Gain — –1 — V/V ORDERING INFORMATION Gain Error, +25°C — ±0.05 ±0.5 % Model Number Operating Temperature Range Package RoHS Gain Error, -55 to +85°C — ±0.05 ±0.6 % Sample Mode Offset, +25°C — ±2 ±7 mV SHM-950MC 0 to +70°C DIP No Sample Mode Offset, -55 to +85°C — ±5 ±10 mV SHM-950ME -40 to +100°C DIP No Sample-to-Hold Offset, +25°C ➁ — ±5 ±20 mV SHM-950GC 0 to +70°C SMT No Sample-to-Hold Offset, -55 to +85°C — ±10 ±50 mV SHM-950GE -40 to +100°C SMT No Linearity Error ➀ — ±0.001 ±0.005 %FS SHM-950MC-C 0 to +70°C DIP Yes DYNAMIC CHARACTERISTICS SHM-950ME-C -40 to +100°C DIP Yes Acquisition Time SHM-950GC-C 0 to +70°C SMT Yes 10V to ±0.001%FS (±0.1 mV) SHM-950GE-C -40 to +100°C SMT Yes +25°C — 1000 1500 ns –55 to +85°C — — 1600 ns 10V to ±0.01%FS (±1 mV) For availability of high-reliability versions of the SHM-950, contact DATEL. +25°C — 700 1200 ns –55 to +85°C — — 1400 ns 1V to ±1%FS (±10 mV) — 350 500 ns Sample-to-Hold Settling Time ±0.001%FS (±0.1 mV) — 60 90 ns Technical Notes ±0.1%FS (±10 mV) — 30 50 ns 1. All ground pins should be tied together and connected to system analog ground Sample-to-Hold Transient — 50 — mVp-p as close to the package as possible. It is recommended to use a ground plane Aperture Delay Time — 15 20 ns under the device and solder ground pins directly to it. Take care to ensure that Aperture Uncertainty (Jitter) — ±25 ±50 ps no ground potentials can exist between ground pins. Output Slew Rate ±40 70 — V/µs 2. External 0.1μF to 4.7μF tantalum bypass capacitors are required in critical Output Droop +25°C — ±0.5 ±15 µV/µs applications. 0 to +70°C — ±15 ±80 µV/µs 3. A logic 1 on S/H puts the unit in the sample mode. A logic 0 puts the unit in hold –55 to +85°C — ±1.2 ±2.4 mV/µs mode. Feedthrough Rejection — –84 –74 dB 4. The maximum capacitive load to avoid oscillation is typically 250pF. Recom- mended resistive load is 500Ω, although values as low as 250Ω may be used. Acquisition and sample-to-hold settling times are relatively unaffected by resistive loads down to 250Ω and capacitive loads up to 50pF. Greater load capacitances will affect both acquisition and settling time. 5. Gain and offset adjusting can be accomplished using the external circuitry shown in Figure 2. Adjust offset with a 0V input. Adjust gain with a ±FS input. Adjust so that the output in the hold mode matches the input. DATEL 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA Tel: (508) 339-3000 www.datel.com e-mail: help@datel.com 12 Sep 2012 MDC_SHM-950.B03 Page 2 of 3 ®® SHM-950 Miniature, High-Speed ±0.001% Sample-Hold Amplifi ers NOTE: With a precision source, adjust R1 and R2 so that the output of the SHM-950 in the hold mode matches the source output. Figure 2. Offset and Gain Adjustments MECHANICAL DIMENSIONS Inches (mm) DIP Package SMT Package 0.405 MAX. (10.287) Dimension Tolerances (unless otherwise indicated): 2 place decimal (.XX) ±0.001 (±0.25) PIN 1 3 place decimal (.XXX) ±0.005 (±0.127) INDENTIFIER 0.300 MAX. SHM-950 SHM-50 SHM-950 (7.62) 0.140 MAX. (3.556) 0.300 0.14 0.018 (0.097) 0.09 0.035 ±0.010 (3.55) (7.62) (2.23) (0.89) 0.400 (10.16) 0.200 MAX. 0.010 ±0.002 (5.08) (0.254) 0.05 (1.27) 0.070 TYP. 0.054 0.018 ±0.002 (1.78) (1.372) 0.050 (0.457) 0.100 TYP. (1.27) 0.46 (2.54) 0.300 ±0.015 0.300 (11.68) 0.100 TYP. (7.620) (7.62) (2.540) 0.300 ±0.005 (7.620) ISO 9001 ISO 9001 REGISTERED DATEL . 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 licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA without notice. ITAR and ISO 9001/14001 REGISTERED www.datel.com e-mail: help@datel.com 12 Sep 2012 MDC_SHM-950.B03 Page 3 of 3