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AD5439

Description
Dual 8-,10-,12-Bit High Bandwidth Multiplying DACs with Serial Interface
File Size918KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual View All

AD5439 Overview

Dual 8-,10-,12-Bit High Bandwidth Multiplying DACs with Serial Interface

Data Sheet
FEATURES
10 MHz multiplying bandwidth
INL of ±0.25 LSB at 8 bits
16-lead TSSOP package
2.5 V to 5.5 V supply operation
±10 V reference input
50 MHz serial interface
2.47 MSPS update rate
Extended temperature range: −40°C to +125°C
4-quadrant multiplication
Power-on reset
0.5 μA typical current consumption
Guaranteed monotonic
Daisy-chain mode
Readback function
Dual 8-/10-/12-Bit, High Bandwidth,
Multiplying DACs with Serial Interface
AD5429/AD5439/AD5449
GENERAL DESCRIPTION
The
AD5429/AD5439/AD5449
1
are CMOS, 8-, 10-, and 12-bit,
dual-channel, current output digital-to-analog converters (DAC),
respectively. These devices operate from a 2.5 V to 5.5 V power
supply, making them suited to battery-powered and other
applications.
As a result of being manufactured on a CMOS submicron process,
these parts offer excellent 4-quadrant multiplication character-
istics, with large signal multiplying bandwidths of 10 MHz.
The applied external reference input voltage (V
REF
) determines
the full-scale output current. An integrated feedback resistor
(RFB) provides temperature tracking and full-scale voltage
output when combined with an external current-to-voltage
precision amplifier.
These DACs use a double-buffered, 3-wire serial interface that
is compatible with SPI, QSPI™, MICROWIRE™, and most DSP
interface standards. In addition, a serial data out (SDO) pin allows
daisy-chaining when multiple packages are used. Data readback
allows the user to read the contents of the DAC register via the
SDO pin. On power-up, the internal shift register and latches
are filled with 0s, and the DAC outputs are at zero scale.
The
AD5429/AD5439/AD5449
DACs are available in 16-lead
TSSOP packages. The
EV-AD5415/49SDZ
evaluation board is
available for evaluating DAC performance. For more
information, see the
UG-297
evaluation board user guide.
APPLICATIONS
Portable battery-powered applications
Waveform generators
Analog processing
Instrumentation applications
Programmable amplifiers and attenuators
Digitally controlled calibration
Programmable filters and oscillators
Composite video
Ultrasound
Gain, offset, and voltage trimming
FUNCTIONAL BLOCK DIAGRAM
V
REF
A
AD5429/AD5439/AD5449
V
DD
SYNC
SCLK
SDIN
SDO
CLR
INPUT
REGISTER
LDAC
DAC
REGISTER
SHIFT
REGISTER
INPUT
REGISTER
DAC
REGISTER
8-/10-/12-BIT
R-2R DAC A
RFB
R
R
FB
A
I
OUT
1A
I
OUT
2A
POWER-ON
RESET
8-/10-/12-BIT
R-2R DAC B
I
OUT
1B
I
OUT
2B
R
FB
B
04464-001
RFB
R
LDAC
V
REF
B
Figure 1.
1
U.S. Patent Number 5,689,257.
Rev. F
Document Feedback
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2004–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
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