SHM-50 MURATA-PS | Alldatasheet

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Technical content

MDC_SHM-50.B03 Page 1 of 3 GENERAL DESCRIPTION Murata Power Solution’s SHM-50 is a high-speed, highly accurate sample/hold designed for precision, high-speed analog signal process- ing applications. The SHM-50 features excellent dynamic specifications 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 configuration which results in faster switching and better feedthrough attenuation. Addition- ally, a FET input amplifier design allows faster acquisition and settling times while maintaining a considerably lower droop rate. INPUT/OUTPUT CONNECTIONS Pin Function 1 +5v Digital Supply

2 S/H Control

3 Analog Input

4 Analog Return

5 –5v Supply

6 Analog Output

8 Power Ground

–5V SUPPLY +5V ANALOG SUPPLY

2 SWITCH

+5V DIGITAL SUPPLY ANALOG RETURN 5 1 7 1k 7 POWER GROUND .EW 3-40ACKAGE Figure 1. Functional Block Diagram

FEATURES

/square6 Small 8-pin DIP or SMT package /square6 30ns typical acquisition time to ±0.01%, 40ns typical acquisition time to 0.005% /square6 15ns typical sample-to-hold settling time to ±0.01% /square6 100MHz small signal bandwidth /square6 –78dB feedthrough attenuation /square6 ±2 picoseconds aperture uncertainty /square6 85mW typical, 135mW maximum power dissipation SHM-50 Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifiers Ḥ For full details go to www.murata-ps.com/rohs www.murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000

MDC_SHM-50.B03 Page 2 of 3 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 0 to +70°C SHM-50MM –55 to +125°C Storage Temperature Range –65 to +150°C Thermal Impedance Qjc 15°C/W Qca 35°C/W Package Type 8-pin ceramic DIP or SMT Absolute Maximum Ratings ±5V Supply Voltages ±6.6V Analog Input ±4V Digital Input –0.5V to +5.5V Output Current ±65 mA Functional Specifications Apply over the operating temperature range with ±5Vdc unless otherwise specified. MODEL OPERATING TEMP. RANGE PACKAGE SHM-50MC 0 to +70°C DIP SHM-50MM –55 to +125°C DIP SHM-50GC 0 to +70°C SMT SHM-50GM –55 to +125°C SMT For availability of high-reliability versions of the SHM-50, contact Murata Power Solutions.

Ordering Information

Footnotes: ~ Full Scale (FS) = 2V. Full Scale Range (FSR) = 4V.  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 cir- cuitry 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 — 7 Output Current — — ±65 mA Output Impedance — 0.1 — 7 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 — V/V Gain Error, +25°C — ±0.05 ±0.25 % Linearity Error ~ — ±0.0035 ±0.005 %FS Sample Mode Offset , +25°C — ±2 7 mV Sample-to-Hold Offset (Pedestal), +25°C  — ±30 60 mV Gain Drift — ±1 ±15 ppm/°C Sample Mode Offset Drift ~ — ±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 SHM-50 Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifiers Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com

Figure 2. Offset and Gain Adjustments notice. © 2008 Murata Power Solutions, Inc. Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.