Texas Instruments TLC3544, TLC3548 User's Manual and Specifications

查询TLC3544CDWR供应商 TLC3544, TLC3548

5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS

SLAS266C – OCTOBER 2000 – REVISED MAY 2003

14-Bit Resolution TLC3548 DW OR PW PACKAGE

Maximum Throughput 200 KSPS

(TOP VIEW)

Analog Input Range 0-V to Reference

Voltage SCLK CSTART

FS AVDD

Multiple Analog Inputs:

SDI AGND

– 8 Channels for TLC3548

EOC/INT BGAP

– 4 Channels for TLC3544

SDO REFM

Pseudodifferential Analog Inputs DGND REFP

SPI/DSP-Compatible Serial Interfaces With DVDD AGND SCLK up to 25 MHz CS AVDD

Single 5-V Analog Supply; 3-/5-V Digital

Supply

Low Power: A3 A4 – 4 m A (Internal Reference: 1.8 m A) for Normal Operation – 20 µA in Autopower-Down

TLC3544 DW OR PW PACKAGE

Built-In 4-V Reference, Conversion Clock

(TOP VIEW)

and 8x FIFO Hardware-Controlled and Programmable SCLK CSTART Sampling Period FS AVDD

Programmable Autochannel Sweep and SDI AGND Repeat EOC/INT BGAP

SDO REFM

Hardware Default Configuration

DGND REFP

INL: ±1 LSB Max

DVDD AGND DNL: ±1 LSB Max CS AVDD

SINAD: 80.8 d B

THD: –95 d B

description The TLC3544 and TLC3548 are a family of 14-bit resolution high-performance, low-power, CMOS analog-to-digital converters (ADC). All devices operate from a single 5-V analog power supply and 3-V to 5-V digital supply. The serial interface consists of four digital inputs [chip select (CS), frame sync (FS), serial input-output clock (SCLK), serial data input (SDI)], and a 3-state serial data output (SDO). CS (works as SS, slave select), SDI, SDO, and SCLK form an SPI interface. FS, SDI, SDO, and SCLK form a DSP interface. The frame sync signal (FS) indicates the start of a serial data frame being transferred. When multiple converters connect to one serial port of a DSP, CS works as the chip select to allow the host DSP to access the individual converter. CS can be tied to ground if only one converter is used. FS must be tied to DVDD if it is not used (such as in an SPI interface). When SDI is tied to DVDD, the device is set in hardware default mode after power-on, and no software configuration is required. In the simplest case, only three wires (SDO, SCLK, and CS or FS) are needed to interface with the host.

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Copyright  2000 – 2003, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

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