TLV2544 概述

The TLV2544 are 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. The TLV2544 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 TI DSP, a frame sync (FS) signal is used to indicate the start of a serial data frame.

The TLV2544C are characterized for operation from 0°C to 70°C. The TLV2544I are characterized for operation from –40°C to 85°C.

TLV2544 特性

• 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, f_i = 12-kHz
• Spurious Free Dynamic Range: 75 dB, f_i = 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 (1 µA Max, Ext Ref), Autopower-Down Mode (1 µA, Ext Ref)
• Programmable Auto-Channel Sweep