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SHM-49
Miniature, High-Speed, Complete 0.05% Sample Hold Amplifiers
FEATURES
Small 8-pin DIP or SMT package 200ns max. acquisition time to 0.01% 100ns max. sample-to-hold settling time to 0.01% 16MHz small signal bandwidth 74dB feedthrough attenuation 25 picoseconds aperture uncertainty 415mW maximum power dissipation
GENERAL DESCRIPTION Murata Power Solution's SHM-49 is a high-speed, highly accurate sample/hold designed for precision, high-speed analog signal processing applications. The SHM-49 features excellent dynamic specifications including a maximum acquisition time of only 200 nanoseconds for a 10V step to 0.01%. Sample-to-hold settling time, to 0.01% accuracy, is 100 nanoseconds maximum with an aperture uncertainty of 2 picoseconds. The SHM-49 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 +15V SUPPLY 7
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
2k 100pF 2k ANALOG INPUT 3 6 ANALOG OUTPUT
S/H CONTROL 2
SWITCH DRIVER
8 POWER GROUND
4 ANALOG RETURN
Figure 1. Functional Block Diagram
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MDC_SHM-49.B02 Page 1 of 3
SHM-49
Miniature, High-Speed, Complete 0.05% 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 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 Operating Temp. Range, Case SHM-49MC/GC SHM-49MM/GM Storage Temperature Range Thermal Impedance jc ca Package Type MIN. +11.5 -11.5 +4.75 -- -- -- -- -- TYP. +15.0 -15.0 +5.0 0.5 +12 -12 +1 365 MAX. +15.5 -15.5 +5.25 1 +13.5 -13.5 -1.5 415 UNITS Volts Volts Volts mV/V mA mA Volts mW
Functional Specifications (Apply over the operating temperature range with 15V and +5V supplies unless otherwise specified.)
ANALOG INPUT/OUTPUT Input/Output Voltage Range 15V Nominal Supply 12V Nominal Supply Input Impedance Output Current Output Impedance Capacitive Load DIGITAL INPUT MIN. 10 7 -- -- -- 100 TYP. 11.5 8.5 1000 -- 0.1 250 MAX. -- -- -- 65 -- -- UNITS Volts Volts mA pF
0 to +70C -55 to +125C -65 to +150C 15C/W 35C/W 8-pin ceramic DIP (MC/MM) or SMT (GC/GM)
Input Logic Levels Logic 1 +2.0 Logic 0 0 Loading Logic 1 -- Logic 0 -- TRANSFER CHARACTERISTICS Gain Gain Error, +25C Linearity Error Sample Mode Offset , +25C Sample-to-Hold Offset (Pedestal), +25C Gain Drift Sample Mode Offset Drift Sample-to-Hold Off. (Pedestal) Drift DYNAMIC CHARACTERISTICS Acquisition Time 10V to 0.01%FS (1 mV) +25C -55 to +125C 10V to 0.1%FS (10 mV) +25C -55 to +125C 10V to 0.01%FS (100 mV) 1V to 1%FS (10 mV) Sample-to-Hold Settling Time 10V to 1%FS (100 mV) 1V to 0.01%FS (10 mV) Sample-to-Hold Transient Aperture Delay Time Aperture Uncertainty (Jitter) Output Slew Rate Small Signal BW (-3dB) Output Droop +25C 0 to +70C -55 to +125C Feedthrough Rejection -- -- -- -- -- -- -- --
-- -- -- -- -1 0.05 0.005 2 2.5 0.5 3 5
+5.0 +0.8 +5 -5 -- 0.5 0.01 7 25 15 15 20
Volts Volts A A V/V % %FS mV mV ppm/C ppm of FSR/C ppm of FSR/C
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
MODEL SHM-49MC SHM-49MM SHM-49GC SHM-49GM OPERATING TEMP. RANGE 0 to +70C -55 to +125C 0 to 70C -55 to 125C
For availability of high-reliability versions of the SHM-49, contact Murata Power Solutions.
-- -- -- -- -- -- -- -- -- -- -- 200 10 -- -- -- 69
160 -- 100 -- 90 75 60 40 100 10 25 300 16 0.5 15 1.2 74
200 265 150 215 -- -- 100 80 -- 15 50 -- -- 15 30 2.4 --
ns ns ns ns ns ns ns ns mVp-p ns ps V/s MHz V/s V/s mV/s dB
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 0.1F to 4.7F 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 500, although values as low as 250 may be used. Acquisition and sample-to-hold settling times are relatively unaffected by resistive loads down to 250 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.
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MDC_SHM-49.B02 Page 2 of 3
SHM-49
Miniature, High-Speed, Complete 0.05% Sample Hold Amplifiers
(GAIN ADJUST) R1 10k , 0.1% 50 10k , 0.1%
ANALOG INPUT
TO SHM-49 PIN 3 HIGH-SPEED FAST-SETTLING AMPLIFIER
5.11k
3M
-15V
+15V
R2 (OFFSET ADJUST)
Figure 2. Offset and Gain Adjustments
MECHANICAL DIMENSIONS Inches (mm)
DIP Package
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) 0.300 MAX. (7.62) 0.140 MAX. (3.556) 0.09 (2.23) 0.035 0.010 (0.89)
SMT Package
SHM-49 PIN 1
SHM-49
0.018 (0.097) 0.400 (10.16)
0.300 (7.62)
0.14 (3.55)
0.200 MAX. (5.08) 0.054 (1.372) 0.018 0.002 (0.457) 0.100 TYP. (2.540) 0.300 0.005 (7.620)
0.010 0.002 (0.254)
0.05 (1.27) 0.300 (7.62) 0.100 TYP. (2.54)
0.070 TYP. (1.78) 0.46 (11.68)
0.300 0.015 (7.620)
0.050 (1.27)
ISO 9001
REGISTERED
USA: Canada: UK:
Mansfield (MA), Tel: (508) 339 3000, email: sales@murata-ps.com Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
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
France: Japan: China:
Germany: Munchen, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com
12/05/2008 www.murata-ps.com email: sales@murata-ps.com ISO 9001 & ISO 14001 REGISTERED
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. (c) 2008 Murata Power Solutions, Inc.
Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
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MDC_SHM-49.B02 Page 3 of 3

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