DAC80504RTER.B中文资料德州仪器数据手册PDF规格书

1 Features

1• Performance

– INL: ±1 LSB Maximum at 16-Bit Resolution

– TUE: ±0.1% of FSR Maximum

• Integrated 2.5 V Precision Internal Reference

– Initial Accuracy: ±5 mV, Maximum

– Low Drift: 2 ppm/°C Typical

• High Drive Capability: 20 mA With 0.5 V From

Supply Rails

• Flexible Output Configuration

– User Selectable Gain: 2, 1 or ½

– Reset to Zero Scale or Midscale

• Wide Operating Range

– Power Supply: 2.7 V to 5.5 V

– Temperature: –40˚C to +125˚C

• 50-MHz, SPI-Compatible Serial Interface

– 4-Wire Mode, 1.7 V to 5.5 V Operation

– Daisy-Chain Operation

– CRC Error Check

• Low Power: 0.7 mA/Channel at 5.5 V

• Small Package: 3-mm × 3-mm, 16-Pin WQFN

2 Applications

• Optical Networking

• Wireless Infrastructure

• Industrial Automation

• Data Acquisition Systems

3 Description

The DAC80504, DAC70504, and DAC60504

(DACx0504) are a pin-compatible family of lowpower,

four-channel, buffered voltage-output, digitalto-

analog converters (DACs) with 16-, 14-, and 12-bit

resolution. The DACx0504 includes a low drift, 2.5-V

internal reference, eliminating the need for an

external precision reference in most applications. A

user-selectable gain configuration provides full-scale

output voltages of 1.25 V (gain = ½), 2.5 V (gain = 1),

or 5 V (gain = 2). These devices operate from a

single 2.7-V to 5.5-V supply, are specified monotonic,

and provide high linearity of ±1 LSB INL.

Communication to the DACx0504 is performed

through a 4-wire serial interface that operates at clock

rates of up to 50 MHz. The VIO pin enables serial

interface operation from 1.7 V to 5.5 V. The

DACx0504 flexible interface enables operation with a

wide range of industry-standard microprocessors and

microcontrollers.

The DACx0504 incorporate a power-on-reset circuit

that powers up and maintains the DAC outputs at

either zero scale or midscale until a valid code is

written to the device. These device consume a low

current of 0.7 mA/channel at 5.5 V, making these

devices an excellent choice for battery-operated

equipment. A per-channel power-down feature

reduces the device current consumption to 15 μA.

The DACx0504 is characterized for operation over

the temperature range of –40°C to +125°C, and is

available in a small, 3-mm × 3-mm QFN package.