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Technical content

DATEL’s SHM-50 is a high-speed, highly accurate sample/hold designed for precision, high-speed analog signal processing applications. The SHM-50 features excellent dynamic specifi cations including a maximum acquisition time of only 40 nanoseconds for a 2V step to ±0.01%. Sample-to-hold settling time, to ±0.01% accuracy, is 20 nanoseconds maximum with an aperture uncertainty of ±2 picoseconds. The SHM-50 is a complete sample/hold circuit, containing a preci- sion MOS hold capacitor and a MOSFET switching confi guration which results in faster switching and better feedthrough attenuation. Addition- ally, a FET input amplifi er design allows faster acquisition and settling times while maintaining a considerably lower droop rate. –5V SUPPLY +5V ANALOG SUPPLY

2 SWITCH

6 ANALOG OUTPUT

+5V DIGITAL SUPPLY ANALOG RETURN 5 1 7 1k 7 POWER GROUND INPUT/OUTPUT CONNECTIONS Pin Function 1 +5v Digital Supply 2 S/ H Control

3 Analog Input

4 Analog Return

5 –5v Supply

8 Power Ground

Figure 1. Functional Block Diagram

FEATURES

„Small 8-pin DIP or SMT package „30ns typical acquisition time to ±0.01%, 40ns typical acquisition time to 0.005% „15ns typical sample-to-hold settling time to ±0.01% „100MHz small signal bandwidth „–78dB feedthrough attenuation „±2 picoseconds aperture uncertainty „85mW typical, 135mW maximum power dissipation DATEL, Inc. 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com SHM-50 Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifi ers MDC_SHM-50.B07 Page 1 of 4

±5V Supply Voltages ±6.6V Analog Input ±4V Digital Input –0.5V to +5.5V Output Current ±65 mA Functional Specifi cations Apply over the operating temperature range with ±5Vdc unless otherwise specifi ed. Footnotes: ➀ Full Scale (FS) = 2V. Full Scale Range (FSR) = 4V. ➁ Sample-to-hold offset error (pedestal) is constant regardless of input/output level. TECHNICAL NOTES 1. All ground pins should be tied together and connected to system analog ground as close to the package as possible. It is recommended to use a ground plane under the device and solder ground pins directly to it. Take care to ensure that no ground potentials can exist between ground pins. A single +5V supply can be used for both +5V Digital Supply (pin 1) and +5V Analog Supply (pin 7). 2. External 0.1μF to 4.7μF tantalum bypass capacitors are required in critical applications. 3. A logic 1 on S/H puts the unit in the sample mode. A logic 0 puts the unit in hold mode. 4. 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. ANALOG INPUT/OUTPUT MIN. TYP . MAX. UNITS Input/Output Voltage Range –3.5 — +3.5 Volts Input Impedance — 1000 — Ω Output Current — — ±65 mA Output Impedance — 0.1 — Ω Capacitive Load 100 250 — pF DIGITAL INPUT Input Logic Levels Logic 1 +2.0 — +5.0 Volts Logic 0 0 — +0.8 Volts Loading Logic 1 — — +5 μA Logic 0 — — –5 μA TRANSFER CHARACTERISTICS Gain — –1.5 — V/V Gain Error, +25°C — ±0.05 ±0.25 % Linearity Error Sample Mode Offset , +25°C — ±2 ±7 mV Sample-to-Hold Offset (Pedestal), +25°C ➁ — ±30 60 mV Gain Drift — ±1 ±15 ppm/°C Sample Mode Offset Drift ➀ — ±3 ±15 ppm of FSR/°C Sample-to-Hold Off. (Pedestal) Drift — ±5 ±20 ppm of FSR/°C DYNAMIC CHARACTERISTICS Acquisition Time 2V to ±0.005%FS (±100μV) +25°C — 40 50 ns –55 to +125°C — 70 TBD ns 2V to ±0.01%FS (±200μV) +25°C — 30 40 ns –55 to +125°C — 40 50 ns 2V to ±0.1%FS (±2mV) — 25 30 ns Sample-to-Hold Settling Time 2V to ±0.005%FS (±100μV) — 15 25 ns 2V to ±0.01%FS (±200μV) — 10 20 ns Sample-to-Hold Transient — 100 — mVp-p Aperture Delay Time — 2 4 ns Aperture Uncertainty (Jitter) — ±2 ±4 ps Output Slew Rate 600 ±650 — V/μs Small Signal BW (–3dB) 90 100 — MHz Output Droop 0 to +70°C — ±0.3 ±1.0 μV/nS Feedthrough Rejection — –78 — dB POWER REQUIREMENTS MIN. TYP . MAX. UNITS Voltage Range +5V Supply +4.75 +5.0 +5.25 Volts –5V Supply –4.75 –5.0 –5.25 Volts Power Supply Rejection Ratio — ±0.5 ±1 mV/V Quiescent Current Drain +5V Analog Supply — +7 +12 mA –5V Supply — –10 –15 mA Power Consumption — 85 135 mW PHYSICAL/ENVIRONMENTAL Operating Temp. Range, Case SHM-50MC, GC 0 to +70°C SHM-50ME, GE –40 to +100°C SHM-50MM, GM –55 to +125°C Storage Temperature Range –65 to +150°C Thermal Impedance θjc 15°C/W θca 35°C/W Package Type 8-pin ceramic DIP or SMT DATEL, Inc. 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com SHM-50 Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifi ers MDC_SHM-50.B07 Page 2 of 4

ORDERING INFORMATION

Model Number Operating Temp. Range Package RoHS SHM-50MC 0 to +70°C DIP No SHM-50ME -40 to +100°C DIP No SHM-50MM -55 to +125°C DIP No SHM-50GC 0 to +70°C SMT No SHM-50GE -40 to +100°C SMT No SHM-50GM -55 to +125°C SMT No SHM-50MC-C 0 to +70°C DIP Yes SHM-50ME-C -40 to +100°C DIP Yes SHM-50MM-C -55 to +125°C DIP Yes SHM-50GC-C 0 to +70°C SMT Yes SHM-50GE-C -40 to +100°C SMT Yes SHM-50GM-C -55 to +125°C SMT Yes For availability of high-reliability versions of the SHM-50, contact DATEL. MECHANICAL DIMENSIONS Inches (mm) 0.300 MAX. (7.62) 0.405 MAX. (10.287) SHM-50 PIN 1 0.035 ±0.010 (0.89) 0.09 (2.23) Dimension Tolerances (unless otherwise indicated): 2 place decimal (.XX) ±0.001 (±0.25) 3 place decimal (.XXX) ±0.005 (±0.127) 0.140 MAX. (3.556) 0.300 ±0.005 (7.620) 0.054 (1.372) 0.100 TYP. 0.018 ±0.002 (0.457) 0.200 MAX. (5.08) 0.300 ±0.015 (7.620) 0.010 ±0.002 (0.254) (2.540) 0.300 (7.62) SHM-50 0.46 (11.68) 0.14 (3.55) 0.05 (1.27) 0.050 (1.27) 0.400 (10.16) 0.300 (7.62) 0.100 TYP. (2.54) 0.070 TYP. (1.78) 0.018 (0.097) ISO 9001ISO 9001 REGISTERED © 2015 DATEL, Inc. DATEL, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technica l information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the g ranting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. www.datel.com • e-mail: help@datel.com DATEL is a registered trademark of DATEL, Inc.

11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA

ITAR and ISO 9001/14001 REGISTERED SHM-50 Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifi ers MDC_SHM-50.B07 Page 4 of 4