DAC8531 Datasheet, PDF (1/19 Pages) Texas Instruments – Low-Power, Rail-to-Rail Output, 16-Bit Serial Input DIGITAL-TO-ANALOG CONVERTER

DAC8531
SBAS192B – MARCH 2001 – REVISED JUNE 2003
Low-Power, Rail-to-Rail Output, 16-Bit Serial Input
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q microPower OPERATION: 250µA at 5V
q POWER-ON RESET TO ZERO
q POWER SUPPLY: +2.7V to +5.5V
q ENSURED MONOTONIC BY DESIGN
q SETTLING TIME: 10µs to ±0.003 FSR
q LOW-POWER SERIAL INTERFACE WITH
SCHMITT-TRIGGERED INPUTS
q ON-CHIP OUTPUT BUFFER AMPLIFIER,
RAIL-TO-RAIL OPERATION
q SYNC INTERRUPT FACILITY
q PACKAGES: MSOP-8 and 3x3 SON-8 (same
size as QFN)
APPLICATIONS
q PROCESS CONTROL
q DATA ACQUISITION SYSTEMS
q CLOSED-LOOP SERVO-CONTROL
q PC PERIPHERALS
q PORTABLE INSTRUMENTATION
q PROGRAMMABLE ATTENUATION
V_DD
V_REF
SYNC
SCLK
D_IN
Ref (+)
16-Bit DAC
16
DAC Register
16
Shift Register
DESCRIPTION
The DAC8531 is a low-power, single, 16-bit buffered voltage
output Digital-to-Analog Converter (DAC). Its on-chip preci-
sion output amplifier allows rail-to-rail output swing to be
achieved. The DAC8531 uses a versatile three-wire serial
interface that operates at clock rates up to 30MHz and is
compatible with standard SPI™, QSPI™, Microwire™, and
Digital Signal Processor (DSP) interfaces.
The DAC8531 requires an external reference voltage to set
the output range of the DAC. The DAC8531 incorporates a
power-on reset circuit that ensures that the DAC output
powers up at 0V and remains there until a valid write takes
place to the device. The DAC8531 contains a power-down
feature, accessed over the serial interface, that reduces the
current consumption of the device to 200nA at 5V.
The low power consumption of this part in normal operation
makes it ideally suited to portable battery-operated equip-
ment. The power consumption is 2mW at 5V reducing to 1µW
in power-down mode.
The DAC8531 is available in both MSOP-8 and 3x3 SON-8
(same size as QFN) packages.
V_FB
V_OUT
Power-Down
Control Logic
Resistor
Network
GND
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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