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 process-
ing 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 nanosec-
onds maximum with an aperture uncertainty of ±25 picoseconds.
The SHM-950 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
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
–15V
SUPPLY
5
+15V
SUPPLY
7
+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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+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
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-950MC
SHM-950MM
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
+8
–8
+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
1.75
—
—
100
TYP.
±11.5
±8.5
2
—
0.1
250
MAX.
—
—
—
±40
—
—
UNITS
Volts
Volts
k
mA
pF
0 to +70°C
–55 to +125°C
–65 to +150°C
15°C/W
35°C/W
8-pin ceramic DIP
Input Logic Levels
Logic 1
+2.0
Logic 0
0
Loading
Logic 1
—
Logic 0
—
TRANSFER CHARACTERISTICS
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
Sample-to-Hold Off.
(Pedestal) Drift
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
—
—
—
—
—
—
—
—
—
—
—
—
–1
±0.05
±0.001
±2
±2.5
±0.5
±3
±5
+5.0
+0.8
+5
–5
—
±0.5
±0.005
±7
±25
±15
±15
±20
Volts
Volts
μA
μA
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-950MC
SHM-950MM
OPERATING TEMP. RANGE
0 to +70°C
–55 to +125°C
For availability of high-reliability versions of the SHM-950,
contact Murata Power Solutions.
—
—
—
—
—
—
—
—
—
—
—
±40
—
—
—
—
160
—
100
—
200
205
100
100
100
10
±25
60
±0.5
±15
±1.2
–84
200
265
150
215
—
—
100
80
—
15
±50
—
±15
±30
±2.4
–78
ns
ns
ns
ns
ns
ns
ns
ns
mVp-p
ns
ps
V/μs
μV/μs
μV/μs
mV/μs
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 0.1μF 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 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.
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Technical enquiries
email: sales@murata-ps.com, 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)
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)
Dimension Tolerances
(unless otherwise indicated):
2 place decimal (.XX) ±0.001 (±0.25)
3 place decimal (.XXX) ±0.005 (±0.127)
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)
0.300 ±0.015
(7.620)
ISO 9001
R E G I S T E R E D
USA:
Canada:
UK:
France:
Tucson (AZ), Tel: (800) 547 2537, 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
Website:
www.murata-ps.jp
Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com
Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Germany:
München, Tel: +49 (0)89-544334-0, email: ped.munich@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
www.murata-ps.com
ISO 9001 REGISTERED
Japan:
email: sales@murata-ps.com
3/13/08
China:
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: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_SHM-950.B01 Page 3 of 3
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