TLV5619CDW屬于集成電路（IC）的數(shù)模轉(zhuǎn)換器（DAC）。由美國(guó)德州儀器公司制造生產(chǎn)的TLV5619CDW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(hào)轉(zhuǎn)換為緩沖或無(wú)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(lè)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(hào)，再連接到屏幕驅(qū)動(dòng)器，以顯示單色或彩色圖像。

FEATURES

· Single Supply 2.7-V to 5.5-V Operation

· ± 0.4 LSB Differential Nonlinearity (DNL),

±1.5 LSB Integral Nonlinearity (INL)

· 12-Bit Parallel Interface

· Compatible With TMS320 DSP

· Internal Power On Reset

· Settling Time 1 μs Typ

· Low Power Consumption:

– 8 mW for 5-V Supply

– 4.3 mW for 3-V Supply

· Reference Input Buffers

· Voltage Output

· Monotonic Over Temperature

· Asynchronous Update

APPLICATIONS

· Battery Powered Test Instruments

· Digital Offset and Gain Adjustment

· Battery Operated/Remote Industrial Controls

· Machine and Motion Control Devices

· Cordless and Wireless Telephones

· Speech Synthesis

· Communication Modulators

· Arbitrary Waveform Generation

DESCRIPTION

The TLV5619 is a 12-bit voltage output DAC with a

microprocessor and TMS320 compatible parallel

interface. The 12 data bits are double buffered so that

the output can be updated asynchronously using the LDAC pin. During normal operation, the device dissi-

pates 8 mW at a 5-V supply and 4.3 mW at a 3-V

supply. The power consumption can be lowered to 50

nW by setting the DAC to power-down mode.

The output voltage is buffered by a ′2 gain rail-to-rail

amplifier, which features a Class A output stage to improve stability and reduce settling time.