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AD5533 Datasheet, PDF (1/16 Pages) Analog Devices – 32-Channel Infinite Sample-and-Hold | |||
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32-Channel Inï¬nite
Sample-and-Hold
AD5533*
FEATURES
Inï¬nite Sample-and-Hold Capability to Ø0.018% Accuracy
High Integration: 32-Channel SHA in 12 Ø 12 mm2 LFBGA
Per Channel Acquisition Time of 16 â®s max
Adjustable Voltage Output Range
Output Voltage Span 10 V
Output Impedance 0.5 â
Readback Capability
DSP-/Microcontroller-Compatible Serial Interface
Parallel Interface
Temperature Range â40ØC to +85ØC
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 inï¬nite 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 A0âA4 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 ampliï¬er. It is restricted to a range
from VSS + 2 V to VDD â 2 V because of the headroom of the
output ampliï¬er.
The device is operated with AVCC = 5 V ± 5%, DVCC = 2.7 V to
5.25 V, VSS = â4.75 V to â16.5 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. Inï¬nite Droopless Sample-and-Hold Capability.
2. The AD5533 is available in a 74-lead LFBGA package with a
body size of 12 mm à 12 mm.
FUNCTIONAL BLOCK DIAGRAM
DVCC AVCC REF IN REF OUT OFFS IN VDD VSS
VIN
TRACK / RESET
BUSY
DAC GND
AGND
DGND
SER / PAR
ADC
DAC
VOUT 0
AD5533
INTERFACE
CONTROL
LOGIC
SCLK DIN DOUT
DAC
DAC
VOUT 31
OFFS OUT
ADDRESS INPUT REGISTER
WR
SYNC/ CS A4 âA0 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
© Analog Devices, Inc., 2000
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