AD5532 Datasheet, PDF (1/16 Pages) Analog Devices – 32-Channel, 14-Bit Voltage-Output DAC

a
32-Channel, 14-Bit
Voltage-Output DAC
AD5532*
FEATURES
High Integration: 32-Channel DAC in 12 ؋ 12 mm² LFBGA
Adjustable Voltage Output Range
Guaranteed Monotonic
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
APPLICATIONS
Level Setting
Instrumentation
Automatic Test Equipment
Industrial Control Systems
Data Acquisition
Low Cost I/O
GENERAL DESCRIPTION
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 V_OUT
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 V_SS + 2 V to V_DD – 2 V because
of the headroom of the output amplifier.
The device is operated with AV_CC = 5 V ± 5%, DV_CC = 2.7 V
to 5.25 V, V_SS = –4.75 V to –16.5 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. 32-channel, 14-bit DAC in one package, guaranteed
monotonic.
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.
FUNCTIONAL BLOCK DIAGRAM
V_IN
TRACK / RESET
BUSY
DAC GND
AGND
DGND
SER /PAR
DV_CC AV_CC REF IN REF OUT OFFS IN V_DD V_SS
AD5532
ADC
DAC
V_OUT 0
MUX
INTERFACE
CONTROL
LOGIC
SCLK D_IN D_OUT
DAC
DAC
V_OUT 31
OFFS OUT
ADDRESS INPUT REGISTER
WR
SYNC / CS A4 –A0 CAL OFFSET SEL
*Protected by U.S. Patent No. 5,969,657; other patents pending.
REV. 0
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