Dual 8-/10-/12-Bit, High Bandwidth,
Multiplying DACs with Parallel Interface
AD5428/AD5440/AD5447
Data Sheet
FEATURES
GENERAL DESCRIPTION
10 MHz multiplying bandwidth
INL of ±0.25 LSB at 8 bits
20-lead and 24-lead TSSOP packages
2.5 V to 5.5 V supply operation
±10 V reference input
21.3 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
Readback function
AD7528 upgrade (AD5428)
AD7547 upgrade (AD5447)
The AD5428/AD5440/AD54471 are CMOS, 8-, 10-, and 12-bit,
dual-channel, current output digital-to-analog converters (DACs),
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,
they offer excellent 4-quadrant multiplication characteristics,
with large signal multiplying bandwidths of up to 10 MHz.
The DACs use data readback, allowing the user to read the
contents of the DAC register via the DB pins. On power-up, the
internal register and latches are filled with 0s, and the DAC
outputs are at zero scale.
㈀he applied external reference input voltage (VREF) determines
the full-scale output current. An integrated feedback resistor (RFB)
provides temperature tracking and full-scale voltage output when
combined with an external I-to-V precision amplifier.
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
The AD5428 is available in a small 20-lead TSSOP package, and
the AD5440/AD5447 DACs are available in small 24-lead TSSOP
packages.
FUNCTIONAL BLOCK DIAGRAM
VREFA
AD5428/AD5440/AD5447
R
VDD
DATA
INPUTS
DB0
INPUT
BUFFER
LATCH
DB7
DB9
DB11
RFBA
IOUTA
8-/10-/12-BIT
R-2R DAC A
AGND
DAC A/B
R
CS
CONTROL
LOGIC
R/W
LATCH
8-/10-/12-BIT
R-2R DAC B
RFBB
IOUTB
DGND
VREFB
04462-001
POWER-ON
RESET
Figure 1.
1
U.S. Patent Number 5,689,257.
Rev. D
Document Feedback
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.
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
