TLV2544CDR

4输入通道,串行I/O接口12位A/D转换器

description

The TLV2548 and TLV2544 are a family of high performance, 12-bit low power, 3.86 µs, CMOS analog-to-digital converters ADC which operate from a single 2.7-V to 5.5-V power supply. These devices have three digital inputs and a 3-state output [chip select CS, serial input-output clock SCLK, serial data input SDI, and serial data output SDO] that provide a direct 4-wire interface to the serial port of most popular host microprocessors SPI interface. When interfaced with a DSP, a frame sync FS signal is used to indicate the start of a serial data frame.

Maximum Throughput 200-KSPS

Built-In Reference, Conversion Clock and 8×FIFO

Differential/Integral Nonlinearity Error: ±1 LSB

Signal-to-Noise and Distortion Ratio: 70 dB, fi= 12-kHz

Spurious Free Dynamic Range: 75 dB, fi= 12- kHz

SPI CPOL = 0, CPHA = 0/DSP-Compatible

  Serial Interfaces With SCLK up to 20-MHz

Single Wide Range Supply 2.7 Vdc to 5.5 Vdc

Analog Input Range 0-V to Supply Voltage With 500 kHz BW

Hardware Controlled and Programmable Sampling Period

Low Operating Current 1.0-mA at 3.3-V, 1.1-mA at 5.5-V With External Ref

Power Down: Software/Hardware Power-Down Mode 1µA Max, Ext Ref, Autopower-Down Mode 1µA, Ext Ref

Programmable Auto-Channel Sweep