DAC7750集成电路（IC）的数模转换器（DAC）规格书PDF中文资料

DAC7750属于集成电路（IC）的数模转换器（DAC）。由德州仪器制造生产的DAC7750数模转换器（DAC）数模转换器（DAC、D/A、D2A 或 D 转 A）可将数字信号转换为缓冲或无缓冲的模拟电压或电流。DAC 架构是否适合特定应用，要取决于分辨率和采样频率。DAC 通常用于音乐播放器，将数字数据流转换为模拟音频流。它们还用于电视和手机，将数字视频数据转换为模拟视频信号，再连接到屏幕驱动器，以显示单色或彩色图像。

1 Features

• Current output: 4 mA to 20 mA;

0 mA to 20 mA; 0 mA to 24 mA

• Voltage output:

– 0 V to 5 V; 0 V to 10 V; ±5 V; ±10 V

– 0 V to 5.5 V; 0 V to 11 V; ±5.5 V; ±11 V

(10% overrange)

• ±0.1% FSR total unadjusted error (TUE) maximum

• DNL: ±1 LSB maximum

• Simultaneous voltage and current output

• Internal 5-V reference (10 ppm/°C, maximum)

• Internal 4.6-V power-supply output

• Reliability features:

– CRC check and watchdog timer

– Thermal alarm

– Open alarm, short current limit

• Wide temperature range: –40°C to 125°C

• Packages: 6-mm × 6-mm 40-pin VQFN and 24-pin

HTSSOP

2 Applications

• Analog output module

• CPU (PLC controller)

• HVAC valve and actuator control

• Flow transmitter

• Other sensor transmitter

• Actuator

3 Description

The DACx760 are precision, fully integrated, 12-

bit and 16-bit digital-to-analog converters (DACs)

designed to meet the requirements of industrial

process-control applications. These devices are

programmable as a current output with a range of

4 mA to 20 mA, 0 mA to 20 mA, or 0 mA to 24 mA;

or as a voltage output with a range of 0 V to 5 V, 0 V

to 10 V, ±5 V, or ±10 V with a 10% overrange (0 V to

5.5 V, 0 V to 11 V, ±5.5 V, or ±11 V). Both current and

voltage outputs can be simultaneously enabled while

being controlled by one data register.

These devices include a power-on-reset function for

powering up in a known state (both IOUT and VOUT

are disabled and in a Hi-Z state). The CLR and CLRSEL

pins set the voltage outputs to zero-scale or

midscale, and the current output to the low end of

the range if the output is enabled. Zero and gain

registers can be programmed to digitally calibrate the

device in the end system. The output slew rate is

also programmable by register. These devices can

superimpose an external HART® signal on the current

output, and operate with either a single 10-V to 36-V

supply, or dual supplies of up to ±18 V.