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AD8303

Analog Devices
Part Number AD8303
Manufacturer Analog Devices
Description +3 V/ Dual/ Serial Input Complete 12-Bit DAC
Published Mar 23, 2005
Detailed Description a FEATURES Complete Dual 12-Bit DAC Pretrimmed Internal Voltage Reference Single +3 V Operation 0.5 mV/Bit with 2.0475 V...
Datasheet PDF File AD8303 PDF File

AD8303
AD8303

Overview
a FEATURES Complete Dual 12-Bit DAC Pretrimmed Internal Voltage Reference Single +3 V Operation 0.
5 mV/Bit with 2.
0475 V Full Scale Low Power: 9.
6 mW 3-Wire Serial SPI Compatible Interface Power Shutdown IDD < 1 ␮ A Compact SO-14, 1.
75 mm Height Package APPLICATIONS Portable Communications Digitally Controlled Calibration Servo Controls PC Peripherals CS CLK En +3 V, Dual, Serial Input Complete 12-Bit DAC AD8303 FUNCTIONAL BLOCK DIAGRAM VDD R E D G A I C S T A E D R P R DAC A OP AMP A VOUTA SDI (DATA) S H I F T R E G I S T E R D LDA R E D G A I C S T B E R R B A N D G A P R E F E R E N C E REF BUF VREF REF BUF DAC B LDB P OP AMP B VOUTB AD8303 DGND MSB RS AGND SHDN GENERAL DESCRIPTION The AD8303 is a complete (includes internal reference) dual, 12-bit, voltage output digital-to-analog converter designed to operate from a single +3 volt supply.
Built using a CBCMOS process, this monolithic DAC offers the user low cost and easeof-use in single-supply +3 volt systems.
Operation is guaranteed over the supply voltage range of +2.
7 V to +5.
5 V making this device ideal for battery operated applications.
The 2.
0475 V full-scale voltage output is laser-trimmed to maintain accuracy over the operating temperature range of the device.
The binary input data format provides an easy-to-use one-half millivolt-per-bit software programmability.
The voltage outputs are capable of sourcing 3 mA.
1.
0 0.
8 0.
6 0.
4 DNL – LSB 0.
2 0 –0.
2 –0.
4 –0.
6 –0.
8 –1.
0 0 1024 2048 3072 DIGITAL INPUT CODE – Decimal 4096 VDD = +5V TA = –40°C, +25°C, +85°C A double buffered serial data interface offers high speed, threewire, DSP and SPI microcontroller compatible inputs using data in (SDI), clock (CLK) and load strobe (LDA + LDB) pins.
A chip-select (CS) pin simplifies connection of multiple DAC packages by enabling the clock input when active low.
Additionally, an RS input sets the output to zero scale or to 1/2 scale based on the level applied to the MSB pin.
A power shutdown featur...


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