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AD5533 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD5533
Description  32-Channel Infinite Sample-and-Hold
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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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
AD5533*
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
© Analog Devices, Inc., 2000
*Protected by U.S. Patent No. 5,969,657; other patents pending.
32-Channel Infinite
Sample-and-Hold
FUNCTIONAL BLOCK DIAGRAM
SYNC/CS
WR
CAL
A4 –A0
SCLK
OFFSET SEL
AD5533
DVCC
VIN
DIN DOUT
ADDRESS INPUT REGISTER
AVCC
REF IN
REF OUT
OFFS IN
INTERFACE
CONTROL
LOGIC
OFFS OUT
VOUT 31
VOUT 0
TRACK / RESET
BUSY
DAC GND
AGND
DGND
SER /
PAR
VDD
VSS
DAC
DAC
DAC
ADC
FEATURES
Infinite 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 –40 C to +85 C
APPLICATIONS
Level Setting
Instrumentation
Automatic Test Equipment
Industrial Control Systems
Data Acquisition
Low Cost I/O
GENERAL DESCRIPTION
The AD5533 combines a 32-channel voltage translation function
with an infinite output hold capability. An analog input voltage
on the common input pin, VIN, is sampled and its digital repre-
sentation transferred to a chosen DAC register. VOUT 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–A4 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 amplifier. It is restricted to a range
from VSS + 2 V to VDD – 2 V because of the headroom of the
output amplifier.
The device is operated with AVCC = 5 V
± 5%, DVCC = 2.7 V to
5.25 V, VSS = –4.75 V to –16.5 V and VDD = 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. Infinite Droopless Sample-and-Hold Capability.
2. The AD5533 is available in a 74-lead LFBGA package with a
body size of 12 mm
× 12 mm.




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