SHM-950
Miniature, High-Speed
±0.001% Sample-Hold Amplifiers
IN N O VA T IO N a n d E X C ELL E N C E
®
®
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
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 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.
INPUT/OUTPUT CONNECTIONS
PIN
FUNCTION
1
+5V SUPPLY
2
S/H CONTROL
3
ANALOG INPUT
4
ANALOG RETURN
5
–15V SUPPLY
6
ANALOG OUTPUT
7
+15V SUPPLY
8
POWER GROUND
Figure 1. SHM-950 Functional Block Diagram
–15V
SUPPLY
+15V
SUPPLY
3
2
POWER
GROUND
SWITCH
DRIVER
6 ANALOG OUTPUT
2k
Ω
ANALOG INPUT
S/H CONTROL
4
8
+5V
SUPPLY
ANALOG
RETURN
5
1
7
2k
Ω
100pF
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