AD5444YRMZ Datasheet, PDF (1/28 Pages) Analog Devices – 12-/14-Bit High Bandwidth Multiplying DACs with Serial Interface

Data Sheet
12-/14-Bit High Bandwidth
Multiplying DACs with Serial Interface
AD5444/AD5446
FEATURES
12 MHz multiplying bandwidth
INL of ± 0.5 LSB at 12 bits
Pin-compatible 12-/14-bit current output DAC
2.5 V to 5.5 V supply operation
10-lead MSOP package
±10 V reference input
50 MHz serial interface
2.7 MSPS update rate
Extended temperature range: −40°C to +125°C
4-quadrant multiplication
Power-on reset with brownout detection
0.4 µA typical current consumption
Guaranteed monotonic
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
Automotive radar
GENERAL DESCRIPTION
The AD5444/AD5446¹ are CMOS 12-bit and 14-bit, current
output, digital-to-analog converters (DACs). Operating from a
single 2.5 V to 5.5 V power supply, these devices are suited for
battery-powered and other applications.
As a result of the CMOS submicron manufacturing process,
these parts offer excellent 4-quadrant multiplication char-
acteristics of up to 12 MHz.
These DACs use a double-buffered, 3-wire serial interface that
is compatible with SPI®, QSPI™, MICROWIRE™, and most DSP
interface standards. On power-up, the internal shift register and
latches are filled with 0s, and the DAC output is at zero scale.
The applied external reference input voltage (VREF) determines
the full-scale output current. These parts can handle ±10 V
inputs on the reference, despite operating from a single-supply
power supply of 2.5 V to 5.5 V. An integrated feedback resistor
(RFB) provides temperature tracking and full-scale voltage output
when combined with an external current-to-voltage precision
amplifier. The AD5444/AD5446 DACs are available in small
10-lead MSOP packages, which are pin-compatible with the
AD5425/AD5426/AD5432/AD5443 family of DACs.
The EV-AD5443/46/53SDZ board is available for evaluating
DAC performance. For more information, see the UG-327
evaluation board user guide.
1 _{US Patent Number 5,689,257.}
FUNCTIONAL BLOCK DIAGRAM
V_DD
V_REF
AD5444/
AD5446
R
12-BIT
R-2R DAC
R_FB
I_OUT1
I_OUT2
SYNC
SCLK
SDIN
POWER-ON
RESET
DAC REGISTER
INPUT LATCH
CONTROL LOGIC AND
INPUT SHIFT REGISTER
SDO
GND
Figure 1.
Rev. E
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: [phone] ©2004–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com