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AD5533 Datasheet

  • AD5533

  • 32-Channel Infinite Sample-and-Hold

  • 16頁

  • AD

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a
FEATURES
In鏗乶ite Sample-and-Hold Capability to 0.018% Accuracy
High Integration: 32-Channel SHA in 12 12 mm
2
LFBGA
Per Channel Acquisition Time of 16 s max
Adjustable Voltage Output Range
Output Voltage Span 10 V
Output Impedance 0.5
Readback Capability
DSP-/Microcontroller-Compatible Serial Interface
Parallel Interface
Temperature Range 鈥?0 C to +85 C
APPLICATIONS
Level Setting
Instrumentation
Automatic Test Equipment
Industrial Control Systems
Data Acquisition
Low Cost I/O
32-Channel In鏗乶ite
Sample-and-Hold
AD5533*
GENERAL DESCRIPTION
The AD5533 combines a 32-channel voltage translation function
with an in鏗乶ite output hold capability. An analog input voltage
on the common input pin, V
IN
, is sampled and its digital repre-
sentation transferred to a chosen DAC register. V
OUT
for this
DAC is then updated to reflect the new contents of the DAC
register. Channel selection is accomplished via the parallel address
inputs A0鈥揂4 or via the serial input port. The output voltage
range is determined by the offset voltage at the OFFS_IN pin
and the gain of the output ampli鏗乪r. It is restricted to a range
from V
SS
+ 2 V to V
DD
鈥?2 V because of the headroom of the
output ampli鏗乪r.
The device is operated with AV
CC
= 5 V
鹵
5%, DV
CC
= 2.7 V to
5.25 V, V
SS
= 鈥?.75 V to 鈥?6.5 V and V
DD
= 8 V to 16.5 V and
requires a stable 3 V reference on REF_IN as well as an offset
voltage on OFFS_IN.
PRODUCT HIGHLIGHTS
1. In鏗乶ite Droopless Sample-and-Hold Capability.
2. The AD5533 is available in a 74-lead LFBGA package with a
body size of 12 mm
脳
12 mm.
FUNCTIONAL BLOCK DIAGRAM
DV
CC
AV
CC
REF IN
REF OUT
OFFS IN
V
DD
V
SS
V
OUT
0
V
IN
TRACK
/
RESET
BUSY
DAC GND
AGND
DAC
DGND
INTERFACE
CONTROL
LOGIC
SYNC/ CS
V
OUT
31
ADC
DAC
AD5533
DAC
OFFS OUT
SER /
PAR
ADDRESS INPUT REGISTER
WR
SCLK D
IN
D
OUT
A4 鈥揂0
CAL
OFFSET SEL
*Protected
by U.S. Patent No. 5,969,657; other patents pending.
REV. 0
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
漏 Analog Devices, Inc., 2000

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