SHM-950 Miniture, High-Speed ±0.001% Sample-Hold Amplifiers ADVANCED PRODUCT DATA FEATURES 18 bit accuracy Small 8-pin DIP package 800ns max. acquisition time to ±0.001% 200ns max. sample-to-hold settling time to ±0.001% 16MHz small signal bandwidth 90dB feedthrough attenuation ±25 picoseconds aperture uncertainty 415mW maximum power dissipation GENERAL DESCRIPTION Murata Power Solution’s SHM-950 is a high-speed, highly accurate sample/hold designed for precision, high-speed analog signal processing applications. The SHM-950 features excellent dynamic specifications including a maximum acquisition time of only 800 nanoseconds for a 10V step to ±0.001%. Sample-to-hold settling time, to ±0.001% accuracy, is 200 nanoseconds maximum with an aperture uncertainty of ±25 picoseconds. The SHM-950 is a complete sample/hold circuit, containing a precision MOS hold capacitor and a MOSFET switching configuration which results in faster switching and better feedthrough attenuation. Additionally, a FET input amplifier design allows faster acquisition and settling times while maintaining a considerably lower droop rate. –15V SUPPLY 5 INPUT/OUTPUT CONNECTIONS Pin 1 2 3 4 5 6 7 8 Function +5v Digital Supply S/H Control Analog Input Analog Return –15v Supply Analog Output +15v Analog Supply Power Ground +5V SUPPLY 1 +15V SUPPLY 7 2k7 100pF 2k7 ANALOG INPUT 3 6 ANALOG OUTPUT SWITCH DRIVER S/H CONTROL 2 8 POWER GROUND 4 ANALOG RETURN Figure 1. Functional Block Diagram www.murata-ps.com Technical enquiries email: [email protected], tel: +1 508 339 3000 MDC_SHM-950.B01 Page 1 of 3 SHM-950 Miniture, High-Speed ±0.001% Sample-Hold Amplifiers Absolute Maximum Ratings ±15V Supply Voltages +5V Supply Voltages Analog Input Digital Input Output Current ±18V –0.5V to +7V ±18V –0.5V to +5.5V ±65 mA Functional Specifications (Apply over the operating temperature range with ±15V and +5V supplies unless otherwise specified.) ANALOG INPUT/OUTPUT MIN. TYP. MAX. UNITS Input/Output Voltage Range ±15V Nominal Supply ±12V Nominal Supply Input Impedance Output Current Output Impedance Capacitive Load DIGITAL INPUT ±10 ±7 1.75 — — 100 ±11.5 ±8.5 2 — 0.1 250 — — — ±40 — — Volts Volts k7 mA 7 pF — — +5.0 +0.8 Volts Volts — — +5 –5 μA μA –1 ±0.05 ±0.001 ±2 — ±0.5 ±0.005 ±7 V/V % %FS mV Input Logic Levels Logic 1 +2.0 Logic 0 0 Loading Logic 1 — Logic 0 — TRANSFER CHARACTERISTICS — — — — MIN. TYP. MAX. UNITS +11.5 –11.5 +4.75 — +15.0 –15.0 +5.0 ±0.5 +15.5 –15.5 +5.25 ±1 Volts Volts Volts mV/V — — — — +8 –8 +1 365 +13.5 –13.5 –1.5 415 mA mA Volts mW Operating Temp. Range, Case SHM-950MC SHM-950MM Storage Temperature Range Thermal Impedance Qjc Qca Package Type 0 to +70°C –55 to +125°C –65 to +150°C 15°C/W 35°C/W 8-pin ceramic DIP Footnotes: ~ Full Scale (FS) = 10V. Full Scale Range (FSR) = 20V. Sample-to-hold offset error (pedestal) is constant regardless of input/output level. Ordering Information Gain Gain Error, +25°C Linearity Error ~ Sample Mode Offset , +25°C Sample-to-Hold Offset (Pedestal), +25°C Gain Drift Sample Mode Offset Drift ~ — — — ±2.5 ±0.5 ±3 ±25 ±15 ±15 mV ppm/°C ppm of FSR/°C Sample-to-Hold Off. (Pedestal) Drift — ±5 ±20 ppm of FSR/°C DYNAMIC CHARACTERISTICS Acquisition Time 10V to ±0.001%FS (±1 mV) +25°C –55 to +125°C 10V to ±0.1%FS (±10 mV) +25°C –55 to +125°C 10V to ±1%FS (±100 mV) 1V to ±1%FS (±10 mV) Sample-to-Hold Settling Time 10V to ±0.01%FS (±1 mV) 1V to ±1%FS (±10 mV) Sample-to-Hold Transient Aperture Delay Time Aperture Uncertainty (Jitter) Output Slew Rate Output Droop +25°C 0 to +70°C –55 to +125°C Feedthrough Rejection POWER REQUIREMENTS Voltage Range +15V Supply –15V Supply +5V Supply Power Supply Rejection Ratio Quiescent Current Drain +15V Analog Supply –15V Supply +5V Supply Power Consumption PHYSICAL/ENVIRONMENTAL — — 160 — 200 265 ns ns — — — — 100 — 200 205 150 215 — — ns ns ns ns — — — — — ±40 100 100 100 10 ±25 60 100 80 — 15 ±50 — ns ns mVp-p ns ps V/μs — — — — ±0.5 ±15 ±1.2 –84 ±15 ±30 ±2.4 –78 μV/μs μV/μs mV/μs dB www.murata-ps.com MODEL OPERATING TEMP. RANGE SHM-950MC 0 to +70°C SHM-950MM –55 to +125°C For availability of high-reliability versions of the SHM-950, contact Murata Power Solutions. 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. 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. The maximum capacitive load to avoid oscillation is typically 250pF. Recommended 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. Technical enquiries email: [email protected], tel: +1 508 339 3000 MDC_SHM-950.B01 Page 2 of 3 SHM-950 Miniture, High-Speed ±0.001% Sample-Hold Amplifiers 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) 0.405 MAX. (10.287) Dimension Tolerances (unless otherwise indicated): 2 place decimal (.XX) ±0.001 (±0.25) 3 place decimal (.XXX) ±0.005 (±0.127) PIN 1 INDENTIFIER SHM-950 0.300 MAX. (7.62) 0.140 MAX. (3.556) 0.09 (2.23) 0.035 ±0.010 (0.89) 0.200 MAX. (5.08) 0.054 (1.372) 0.010 ±0.002 (0.254) 0.018 ±0.002 (0.457) 0.300 ±0.015 (7.620) 0.100 TYP. (2.540) 0.300 ±0.005 (7.620) ISO 9001 R E G I S T E R E D USA: Tucson (AZ), Tel: (800) 547 2537, email: [email protected] Canada: Toronto, Tel: (866) 740 1232, email: [email protected] UK: Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected] France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: [email protected] Germany: München, Tel: +49 (0)89-544334-0, email: [email protected] Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 www.murata-ps.com ISO 9001 REGISTERED email: [email protected] 3/13/08 Japan: Tokyo, Tel: 3-3779-1031, email: [email protected] Osaka, Tel: 6-6354-2025, email: [email protected] Website: www.murata-ps.jp China: Shanghai, Tel: +86 215 027 3678, email: [email protected] Guangzhou, Tel: +86 208 221 8066, email: [email protected] Murata Power Solutions, 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 licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2008 Murata Power Solutions, Inc. www.murata-ps.com Technical enquiries email: [email protected], tel: +1 508 339 3000 MDC_SHM-950.B01 Page 3 of 3