SHM-950

®
SHM-950
®
Miniature, High-Speed ±0.001% Sample-Hold Amplifiers
ADVANCED PRODUCT DATA
FEATURES

18 bit accuracy

Small 8-pin DIP package

1.5μs max. acquisition time to ±0.001%

90ns max. sample-to-hold settling time to ±0.001%

70 V/μs slew rate

84dB feedthrough attenuation

±25 picoseconds aperture uncertainty

280mW maximum power dissipation
INPUT/OUTPUT CONNECTIONS
GENERAL DESCRIPTION
DATEL’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 1.5 microseconds for a 10V step to
±0.001%.
Sample-to-hold settling time, to ±0.001% accuracy, is 90 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
Pin
1
+15V
SUPPLY
7
Function
+5v Digital Supply
2
S/H Control
3
Analog Input
4
Analog Return
5
–15v Supply
6
Analog Output
7
+15v Analog Supply
8
Power Ground
+5V
SUPPLY
1
2kΩ
100pF
2kΩ
ANALOG INPUT 3
6 ANALOG OUTPUT
SWITCH
DRIVER
S/H CONTROL 2
8
POWER
GROUND
4
ANALOG
RETURN
Figure 1. Functional Block Diagram
DATEL
• 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
•
Tel: (508) 339-3000
•
www.datel.com
12 Sep 2012
•
e-mail: [email protected]
MDC_SHM-950.B03 Page 1 of 3
®
SHM-950
®
Miniature, 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
±55 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
kΩ
mA
Ω
pF
—
—
—
+0.8
Volts
Volts
—
—
+5
–5
µA
µA
—
—
—
—
—
—
—
—
–1
±0.05
±0.05
±2
±5
±5
±10
±0.001
—
±0.5
±0.6
±7
±10
±20
±50
±0.005
V/V
%
%
mV
mV
mV
mV
%FS
—
—
1000
—
1500
1600
ns
ns
—
—
—
700
—
350
1200
1400
500
ns
ns
ns
—
—
—
—
—
±40
60
30
50
15
±25
70
90
50
—
20
±50
—
ns
ns
mVp-p
ns
ps
V/µs
—
—
—
—
±0.5
±15
±1.2
–84
±15
±80
±2.4
–74
µV/µs
µV/µs
mV/µs
dB
Input Logic Levels
Logic 1
+2.0
Logic 0
—
Loading
Logic 1
—
Logic 0
—
TRANSFER CHARACTERISTICS
Gain
Gain Error, +25°C
Gain Error, -55 to +85°C
Sample Mode Offset, +25°C
Sample Mode Offset, -55 to +85°C
Sample-to-Hold Offset, +25°C ➁
Sample-to-Hold Offset, -55 to +85°C
Linearity Error ➀
DYNAMIC CHARACTERISTICS
Acquisition Time
10V to ±0.001%FS (±0.1 mV)
+25°C
–55 to +85°C
10V to ±0.01%FS (±1 mV)
+25°C
–55 to +85°C
1V to ±1%FS (±10 mV)
Sample-to-Hold Settling Time
±0.001%FS (±0.1 mV)
±0.1%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 +85°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
TYP.
MAX.
UNITS
+11.5
–11.5
+4.75
—
+15.0
–15.0
+5.0
110
+15.5
–15.5
+5.25
100
Volts
Volts
Volts
dB
—
—
—
—
+7
–7
+1
215
+9
–9
+1.5
280
mA
mA
mA
mW
Operating Temp. Range, Case
SHM-950MC
SHM-950ME
Storage Temperature Range
Thermal Impedance
θjc
θca
Package Type
0 to +70°C
–40 to +100°C
–65 to +150°C
15°C/W
35°C/W
8-pin ceramic DIP
Footnotes:
➀ Full Scale (FS) = 10V. Full Scale Range (FSR) = 20V.
➁ Sample-to-hold offset error (pedestal) is constant regardless of input/output level.
ORDERING INFORMATION
Operating Temperature Range
0 to +70°C
-40 to +100°C
0 to +70°C
-40 to +100°C
0 to +70°C
-40 to +100°C
0 to +70°C
-40 to +100°C
Model Number
SHM-950MC
SHM-950ME
SHM-950GC
SHM-950GE
SHM-950MC-C
SHM-950ME-C
SHM-950GC-C
SHM-950GE-C
Package
DIP
DIP
SMT
SMT
DIP
DIP
SMT
SMT
RoHS
No
No
No
No
Yes
Yes
Yes
Yes
For availability of high-reliability versions of the SHM-950, contact DATEL.
Technical Notes
1.
2.
3.
4.
5.
DATEL
MIN.
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.
External 0.1μF to 4.7μF tantalum bypass capacitors are required in critical
applications.
A logic 1 on S/H puts the unit in the sample mode. A logic 0 puts the unit in hold
mode.
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.
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.
• 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
•
Tel: (508) 339-3000
•
www.datel.com
12 Sep 2012
•
e-mail: [email protected]
MDC_SHM-950.B03 Page 2 of 3
®
SHM-950
®
Miniature, 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)
DIP Package
SMT 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)
PIN 1
INDENTIFIER
SHM-950
0.300 MAX.
(7.62)
SHM-50
SHM-950
0.140 MAX.
(3.556)
0.09
(2.23)
0.018 (0.097)
0.035 ±0.010
(0.89)
0.200 MAX.
(5.08)
0.054
(1.372)
0.300
(7.62)
0.14
(3.55)
0.400
(10.16)
0.010 ±0.002
(0.254)
0.05 (1.27)
0.018 ±0.002
(0.457)
0.100 TYP.
(2.540)
0.300 ±0.015
(7.620)
0.300
(7.62)
0.100 TYP.
(2.54)
0.070 TYP.
(1.78)
0.46
(11.68)
0.050
(1.27)
0.300 ±0.005
(7.620)
ISO 9001
R E G I S T E R E D
DATEL
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
. 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.
ITAR and ISO 9001/14001 REGISTERED
www.datel.com • e-mail: [email protected]
12 Sep 2012
MDC_SHM-950.B03 Page 3 of 3