SHA4_15 Datasheet, PDF (1/4 Pages) Analog Devices – SAMPLE AND HOLD AMPLIFIERS

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SAMPLE-AND-HOLDAMPLIFIERS
SHA-IA',l_"A_---,₌3_- ,4,5,6
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OBSOLETE GENERAL DESCRIPTION
Analog Devices' wide selection of Sample-and-Hold Amplifiers
(SHA's) permits the selection of a SHA that is well suited for
virtually any application. Each type offers a unique combina-
tion of speed, accuracy, and cost.
SHA-IA
The SHA-1A is a general purpose SHA offering moderately
high speed and accuracy at a reasonable price. It settles to
0.01%in under 5IJ.Sa,nd its droop rate (decay when in HOLD)
is no greater than 50pV IIJ.S.
SHA-2A
The SHA-2A is a very fast Sample-and-Hold module with ac-
curacy and dynamic performance that make it appropriate for
use with very fast 12 bit AID converters. It settles to 0.1 % in
less than 300ns, and to 0.01 % in less than 500ns.
SHA-3 and SHA-4
SHA-5
The SHA-5 is a low cost general purpose sample-and-hold that
offers good performance at a very low price. It settles to 0.01 %
in 15ps, and has a droop rate of only 5pV Ims.
SHA-6
The SHA-6 was designed as a companion to the high resolution
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These two SUA's were designed for high accuracy at longer
ADC-16QA/D converter. It will acquire a signal to 16 bit ac-
hold times. They settle to 0.01 % in 75ps or less. The two differ
curacy (0.00075%) in 5ms, and then hold it long enough for
in that when switched from HOLD to SAMPLE, the SHA-4
the ADC-16Q to convert it to a 16 bit digital word. It features
settles more rapidly than does the SHA-3.
excellent gain stability over both time and temperatUre.
BLOCK DIAGRAM
SHA-2A
ILLUSTRATION OF SPECIFICATIONS
INPUT
HOLD TO SAMPLE
,I ACOUISITION 1
--1 r-- TIME
I
OUTPUT I
I ~'APERTURE
I SETTJ.d TIME I TIME
-of -I<-,.OLO TO SAMPLE
DROOP'
I ACOUISITION TIME
IN HOLD I
: IN SAMPLE I
LOGIC~
'1 --- 0
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-+ HOLOJ- SAMPLE
I ITRACK'
HOLD
c:=
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-r- SAMPLE
TOO CONVERTERS
PIN DESIGNATIONS: SHA-5
1. ANALOGGROUND
2. -15V
3. +15V
4. N.C.
5. N.C.
6. SIGNALIN
7. CONTROLIN
8. LOGICGROUND
9. N.C.
10. N.C.
11. N.C.
12. ANALOGOUTPUT
13. NO PIN
14. N.C.
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