DAC1221 Datasheet, PDF (1/16 Pages) Burr-Brown (TI) – 16-Bit Low Power DIGITAL-TO-ANALOG CONVERTER

SBAS113
®
DAC1221
DAC1221
For most current data sheet and other product
information, visit www.burr-brown.com
16-Bit Low Power
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q 16-BIT MONOTONICITY GUARANTEED
OVER –40°C TO +85°C
q LOW POWER: 1.2mW
q VOLTAGE OUTPUT
q SETTLING TIME: 2ms to 0.012%
q MAX LINEARITY ERROR: 30ppm
q ON-CHIP CALIBRATION
DESCRIPTION
The DAC1221 is a Digital-to-Analog (D/A) converter
offering 16-bit monotonic performance over the speci-
fied temperature range. It utilizes delta-sigma technol-
ogy to achieve inherently linear performance in a
small package at very low power. The output range is
two times the external reference voltage. On-chip
calibration circuitry dramatically reduces offset and
gain errors.
APPLICATIONS
q PROCESS CONTROL
q ATE PIN ELECTRONICS
q CLOSED-LOOP SERVO-CONTROL
q SMART TRANSMITTERS
q PORTABLE INSTRUMENTS
q VCO CONTROL
The DAC1221 features a synchronous serial interface.
In single converter applications, the serial interface can
be accomplished with just two wires, allowing low-
cost isolation. For multiple converters, a CS signal
allows for selection of the appropriate D/A converter.
The DAC1221 has been designed for closed-loop
control applications in the industrial process control
market, and high resolution applications in the test and
measurement market. It is also ideal for remote appli-
cations, battery-powered instruments, and isolated sys-
tems. The DAC1221 is available in a SSOP-16 package.
X_IN
X_OUT
V_REF
C₁ C_2A C_2B C₃
Clock Generator
Microcontroller
Instruction Register
Command Register
Data Register
Offset Register
Full-Scale Register
SDIO
SCLK
Serial
Interface
Second-Order
∆∑
Modulator
First-Order
Switched
Capacitor Filter
Second-Order
Continuous
Time Post Filter
Modulator Control
V_OUT
CS
DV_DD
DGND
AV_DD
AGND
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© 1999 Burr-Brown Corporation
PDS-1519B
1
®
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