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AD5452W

Description
12-Bit High Bandwidth Multiplying DAC with Serial Interface
File Size498KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
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AD5452W Overview

12-Bit High Bandwidth Multiplying DAC with Serial Interface

Data Sheet
FEATURES
12 MHz multiplying bandwidth
8-lead MSOP package
2.5 V to 5.5 V supply operation
Pin-compatible 12-bit current output DAC
±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 detect
<0.4 µA typical current consumption
Guaranteed monotonic
Qualified for automotive applications
12-Bit High Bandwidth
Multiplying DAC with Serial Interface
AD5452W
FUNCTIONAL BLOCK DIAGRAM
V
DD
V
REF
R
FB
AD5452W
12-BIT REF
R-2R DAC
R
I
OUT
1
DAC REGISTER
POWER-ON
RESET
INPUT LATCH
SYNC
SCLK
SDIN
CONTROL LOGIC
AND INPUT SHIFT
REGISTER
10657-001
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
GND
Figure 1.
GENERAL DESCRIPTION
The
AD5452W
is a CMOS 12-bit current output digital-to-analog
converter. This device operates from a 2.5 V to 5.5 V power supply,
making it suited to several applications, including battery-
powered applications.
As a result of manufacture on a CMOS submicron process, this
DAC offers excellent four-quadrant multiplication characteris-
tics of up to 12 MHz.
This DAC utilizes a double-buffered, 3-wire serial interface that
is compatible with SPI, QSPI™, MICROWIRE™, and most DSP
interface standards. Upon 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 (V
REF
) determines
the full-scale output current. This part 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 (R
FB
)
provides temperature tracking and full-scale voltage output
when combined with an external current-to-voltage precision
amplifier.
The
AD5452W
DAC is available in an 8-lead MSOP package.
Rev. 0
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
www.analog.com
Fax: 781.461.3113
©2012 Analog Devices, Inc. All rights reserved.

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