AD5452W Datasheet, PDF (1/24 Pages) Analog Devices – 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
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
12-Bit High Bandwidth
Multiplying DAC with Serial Interface
AD5452W
FUNCTIONAL BLOCK DIAGRAM
V_DD
V_REF
AD5452W
12-BIT REF
R-2R DAC
R_FB
R
I_OUT1
POWER-ON
RESET
DAC REGISTER
INPUT LATCH
SYNC
SCLK
SDIN
CONTROL LOGIC
AND INPUT SHIFT
REGISTER
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
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