32-Channel, 14-Bit DAC with Precision
Infinite Sample-and-Hold Mode
32-Channel DAC in 12 mm ؋ 12 mm CSPBGA
Guaranteed Monotonic to 14 Bits
Infinite Sample-and-Hold Capability to ؎0.018% Accuracy
Infinite Sample-and-Hold Total Unadjusted Error ؎2.5 mV
Adjustable Voltage Output Range
DSP/Microcontroller Compatible Serial Interface
Output Impedance 0.5 ⍀
Output Voltage Span 10 V
Temperature Range –40؇C to +85؇C
Automatic Test Equipment
Industrial Control Systems
Low Cost I/O
The AD5532B is a 32-channel, voltage output, 14-bit DAC with
an additional precision infinite sample-and-hold mode. The
selected DAC register is written to via the 3-wire serial inter-
face 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.
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.
1. 32-channel, 14-bit DAC in one package, guaranteed
2. The AD5532B is available in a 74-lead CSPBGA with a body
size of 12 mm ϫ 12 mm.
3. In infinite sample-and-hold mode, a total unadjusted error of
± 2.5 mV is achieved by laser-trimming on-chip resistors.
FUNCTIONAL BLOCK DIAGRAM
REF IN REF OUT OFFS IN
TRACK / RESET
ADDRESS INPUT REGISTER
SCLK DIN DOUT
SYNC / CS A4–A0 CAL OFFSET_SEL
*Protected by U.S. Patent No. 5,969,657; other patents pending.
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 that
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., 2002