DAC532A3W中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Current-source DAC:

– 1-LSB DNL

– Two ranges: 300 mA and 220 mA

– 770-mV headroom

? Dual (DAC532A3W only) voltage-output DACs:

– 1-LSB DNL

– Gains of 1 ×, 1.5 ×, 2 ×, 3 ×, and 4 ×

? Programmable comparator mode on channel 1

? High-impedance output when VDD is off

? High-impedance and resistive pull-down powerdown

modes

? 50-MHz SPI-compatible interface

? Automatically detects I2C or SPI

– 1.62-V VIH with VDD = 5.5 V

? General-purpose input/output (GPIO) configurable

as multiple functions

? Predefined waveform generation: sine, cosine,

triangular, sawtooth

? User-programmable nonvolatile memory (NVM)

? Internal or power-supply as reference

? Wide operating range:

– Power supply: 3 V to 5.5 V

– Temperature: –40?C to +125?C

2 Applications

? Tablet (multimedia)

? Chromebook and WOA

? Dashboard camera

? Endoscope

? Analog security camera

? Wireless security camera

3 Description

The three-channel DAC532A3W and the dual-channel

DAC530A2W (DAC53xAxW) are 10-bit, buffered

voltage-output and current-output smart digital-toanalog-

converters (DAC). The DAC53xAxW devices

support a current source that can be used for linear

control of laser diodes and miniature motors. These

devices support Hi-Z power-down mode and Hi-Z

output during power-off conditions for voltage output.

Channel 1 can be configured as a voltage-output DAC

or a comparator. The voltage-output DACs provide

a force-sense option for use as a programmable

comparator and current sink. The multifunction GPIO,

function generation, and programmable nonvolatile

memory (NVM) enable these smart DACs for

processor-less applications and design reuse. These

devices automatically detect SPI or I2C interfaces and

contain an internal reference.

The DAC53xAxW feature set combined with the tiny

package and low power make these smart DACs an

excellent choice for applications such as laser diode

power control and voice-coil motor (VCM) control in

camera lens auto focus and zoom applications.