DAC8805Q屬于集成電路（IC）的數(shù)模轉(zhuǎn)換器（DAC）。由美國德州儀器公司制造生產(chǎn)的DAC8805Q數(shù)模轉(zhuǎn)換器（DAC）數(shù)模轉(zhuǎn)換器（DAC、D/A、D2A 或 D 轉(zhuǎn) A）可將數(shù)字信號轉(zhuǎn)換為緩沖或無緩沖的模擬電壓或電流。DAC 架構(gòu)是否適合特定應(yīng)用，要取決于分辨率和采樣頻率。DAC 通常用于音樂播放器，將數(shù)字?jǐn)?shù)據(jù)流轉(zhuǎn)換為模擬音頻流。它們還用于電視和手機(jī)，將數(shù)字視頻數(shù)據(jù)轉(zhuǎn)換為模擬視頻信號，再連接到屏幕驅(qū)動器，以顯示單色或彩色圖像。

FEATURES

· ±0.5LSB DNL

· ±0.5LSB INL

· Low Noise: 12nV/?Hz

· Low Power: IDD = 1mA per channel at 2.7V

· 2mA Full-Scale Current, with V REF = 10V

· Settling Time: 0.5ms

· 14-Bit Monotonic

· 4-Quadrant Multiplying Reference Inputs

· Reference Bandwidth: 10MHz

· Reference Input: ±18V

· Reference Dynamics: –105 THD

· Midscale or Zero Scale Reset

· Analog Power Supply: +2.7V to +5.5V

· TSSOP-38 Package

· Industry-Standard Pin Configuration

· Pin Compatible with the 16-Bit DAC8822

· Temperature Range: –40°C to +125°C

APPLICATIONS

· Automatic Test Equipment

· Instrumentation

· Digitally Controlled Calibration

· Industrial Control PLCs

DESCRIPTION

The DAC8805 dual, multiplying digital-to-analog

converter (DAC) is designed to operate from a single

2.7V to 5.5V supply.

The applied external reference input voltage VREF

determines the full-scale output current. An internal

feedback resistor (RFB) provides temperature

tracking for the full-scale output when combined with

an external, current-to-voltage (I/V) precision

amplifier.

A RSTSEL pin allows system reset assertion (RS) to

force all registers to zero code when RSTSEL = '0',

or to mid-scale code when RSTSEL = '1'.

Additionally, an internal power-on reset forces all

registers to zero or mid-scale code at power-up,

depending on the state of the RSTSEL pin.

A parallel interface offers high-speed

communications. The DAC8805 is packaged in a

space-saving TSSOP-38 package and has an

industry-standard pinout. The device is specified

from –40°C to +125°C.

For a 16-bit, pin-compatible version, see the

DAC8822.