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| 型號(hào)： | AD781SQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Complete 700 ns Sample-and-Hold Amplifier |
| 中文描述： | SAMPLE AND HOLD AMPLIFIER, 0.6 us ACQUISITION TIME, CDIP8 |
| 封裝： | MINI, CERDIP-8 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 153K |
| 代理商： | AD781SQ |
FUNCT IONAL BLOCK DIAGRAM
1
2
3
4
5
6
7
8
AD781
X1
V
CC
IN
COMMON
NC
OUT
S/H
NC
V
EE
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Complete 700 ns
Sample-and-Hold Amplifier
AD781*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
PRODUCT DE SCRIPT ION
T he AD781 is a high speed monolithic sample-and-hold
amplifier (SHA). T he AD781 guarantees a maximum
acquisition time of 700 ns to 0.01% over temperature. T he
AD781 is specified and tested for hold mode total harmonic
distortion and hold mode signal-to-noise and distortion. T he
AD781 is configured as a unity gain amplifier and uses a
self-correcting architecture that minimizes hold mode errors and
insures accuracy over temperature. T he AD781 is self-contained
and requires no external components or adjustments.
T he low power dissipation, 8-pin mini-DIP package and
completeness make the AD781 ideal for highly compact board
layouts. T he AD781 will acquire a full-scale input in less than
700 ns and retain the held value with a droop rate of 0.01
μ
V/
μ
s.
Excellent linearity and hold mode dc and dynamic performance
make the AD781 ideal for 12- and 14-bit high speed analog-
to-digital converters.
T he AD781 is manufactured on Analog Devices’ BiMOS
process which merges high performance, low noise bipolar
circuitry with low power CMOS to provide an accurate, high
speed, low power SHA.
T he AD781 is specified for three temperature ranges. T he J
grade device is specified for operation from 0
°
C to +70
°
C, the A
grade from –40
°
C to +85
°
C and the S grade from –55
°
C to
+125
°
C. T he J and A grades are available in 8-pin plastic DIP
packages. T he S grade is available in an 8-pin cerdip package.
*
Protected by U.S. Patent No. 4,962,325.
PRODUCT HIGHLIGHT S
1. Fast acquisition time (700 ns), low aperture jitter (75 ps) and
fully specified hold mode distortion make the AD781 an
ideal SHA for sampling systems.
2. Low droop (0.01
μ
V/
μ
s) and internally compensated hold
mode error results in superior system accuracy.
3. Low power (95 mW typical), complete functionality and
small size make the AD781 an ideal choice for a variety of
high performance, low power applications.
4. T he AD781 requires no external components or adjustments.
5. Excellent choice as a front-end SHA for high speed analog-
to-digital converters such as the AD671, AD7586, AD674B,
AD774B, AD7572 and AD7672.
6. Fully specified and tested hold mode distortion guarantees
the performance of the SHA in sampled data systems.
7. T he AD781 is available in versions compliant with MIL-
ST D-883. Refer to the Analog Devices Military Products
Databook or current AD781/883B data sheet for detailed
specifications.
FEATURES
Acquisition Time to 0.01%: 700 ns Maximum
Low Power Dissipation: 95 mW
Low Droop Rate: 0.01
m
V/
m
s
Fully Specified and Tested Hold Mode Distortion
Total Harmonic Distortion: –80 dB Maximum
Aperture J itter: 75 ps Maximum
Internal Hold Capacitor
Self-Correcting Architecture
8-Pin Mini Cerdip and Plastic Package
MIL-STD-883 Compliant Versions Available
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