32-Channel, 14-Bit
Voltage-Output DAC
a
AD5532*
GENERAL DESCRIPTION
FEATURES
High Integration: 32-Channel DAC in 12 ؋
12 mm2 LFBGA
Adjustable Voltage Output Range
Guaranteed Monotonic
The AD5532 is a 32-channel voltage-output 14-bit DAC with
an additional infinite sample-and-hold mode. The selected DAC
register is written to via the 3-wire serial interface and VOUT
for this DAC is then updated to reflect the new contents of the
DAC register. DAC selection is accomplished via address bits
A0–A4. 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.
Readback Capability
DSP-/Microcontroller-Compatible Serial Interface
Output Impedance
0.5 ⍀ (AD5532-1, AD5532-2)
500 ⍀ (AD5532-3)
1 k⍀ (AD5532-5)
Output Voltage Span
10 V (AD5532-1, AD5532-3, AD5532-5)
20 V (AD5532-2)
Infinite Sample-and-Hold Capability to ؎0.018% Accuracy
Temperature Range –40؇C to +85؇C
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
APPLICATIONS
1. 32-channel, 14-bit DAC in one package, guaranteed
monotonic.
Level Setting
Instrumentation
Automatic Test Equipment
Industrial Control Systems
Data Acquisition
2. The AD5532 is available in a 74-lead LFBGA package with
a body size of 12 mm × 12 mm.
3. Droopless/Infinite Sample-and-Hold Mode.
Low Cost I/O
FUNCTIONAL BLOCK DIAGRAM
DV
AV
OFFS IN
V
V
SS
REF IN REF OUT
CC
CC
DD
AD5532
V
0
OUT
V
ADC
DAC
IN
TRACK/RESET
BUSY
V
31
OUT
MUX
DAC
DAC
DAC GND
AGND
OFFS OUT
DGND
INTERFACE
CONTROL
LOGIC
SER/PAR
ADDRESS INPUT REGISTER
WR
OFFSET SEL
A4–A0
CAL
SCLK
D
D
SYNC/ CS
IN
OUT
*Protected by U.S. Patent No. 5,969,657; other patents pending.
REV. 0
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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.
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© Analog Devices, Inc., 2000