DAC8832 Datasheet, PDF (1/26 Pages) Texas Instruments – 16-Bit, Ultra-Low Power, Voltage-Output Digital-to-Analog Converter

BurrĆBrown Products
DAC8832 ®
from Texas Instruments
DAC8832
SBAS380A – FEBRUARY 2006 – REVISED APRIL 2006
16-Bit, Ultra-Low Power, Voltage-Output
Digital-to-Analog Converter
FEATURES
• 16-Bit Resolution
• 2.7 V to 5.5 V Single-Supply Operation
• Very Low Power: 15 µW for 3 V Power
• High Accuracy, INL: 1 LSB
• Low Glitch: 10 nV-s
• Low Noise: 18n V/√Hz
• Fast Settling: 1.0 µS
• Fast SPI™ Interface, up to 50 MHz
• Reset to Mid-Code
• Schmitt-Trigger Inputs for Direct Optocoupler
Interface
APPLICATIONS
• Portable Equipment
• Automatic Test Equipment
• Industrial Process Control
• Data Acquisition Systems
• Optical Networking
DESCRIPTION
The DAC8832 is a single, 16-bit, serial-input,
voltage-output digital-to-analog converter (DAC)
operating from a single 3 V to 5 V power supply. The
DAC8832 provides excellent linearity (1 LSB INL),
low glitch, low noise, and fast settling (1.0 µS to 1/2
LSB of full-scale output) over the specified
temperature range of –40°C to +85°C. The output is
unbuffered, which reduces the power consumption
and the error introduced by the buffer.
This device features a standard high-speed (clock up
to 50MHz), 3 V or 5 V SPI serial interface to
communicate with the DSP or microprocessors.
The DAC8832 provides unipolar or bipolar output
(±V_REF) when working with an external buffer, and is
reset to mid-code after power-up. For optimum
performance, a set of Kelvin connections to the
external reference and the analog ground input are
provided.
The DAC8832 is available in a QFN-14 package,
and is pin-to-pin compatible with the DAC8831IRGY,
which is reset to zero-code after power-up.
Functional Block Diagram
V_DD
V_REF−S V_REF−F
LDAC
CS
SCLK
SDI
Serial
Interface
and
Control
Logic
Input
Register
R_INV
DAC
DAC Latch
R_FB
RFB
+V
INV _−
V_O
+ ^VOUT
OPA277
AGNDF
−V ^OPA704
OPA727
AGNDS
DGND
DAC8832
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SPI, QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corp.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated