描述 Description

The TLC3541 and TLC3545 are a family of high performance, 14-bit, low power, miniature CMOS analog-to-digital converters (ADCs). These devices operate from a single 5-V supply. Devices are available with single, dual, or single pseudo-differential inputs. All of these devices have a chip select (CS)\\, serial clock (SCLK), and serial data output (SDO) that provides a direct 3-wire interface to the serial port of most popular host microprocessors (SPI interface). When interfaced with a DSP, a frame sync signal (FS) is used to indicate the start of a serial data frame on either pin 1 (CS)\\ or pin 7 (FS) for the TLC3541. The TLC3545 ADC connects to the DSP via pin 1 only (CS)\\.

The TLC3541 and TLC3545 are designed to operate with low power consumption. The power saving feature is further enhanced with an auto-power down mode. This product family features a high-speed serial link to modern host processors with an external SCLK up to 15 MHz. Both families use a built-in oscillator as the conversion clock, providing a 2.67 us maximum conversion time.

特性 Features

? 200-KSPS Sampling Rate
? Built-In Conversion Clock
? INL: ±1 LSB Max DNL: ±1 LSB Max
? SINAD = 81.5 dB, SFDR = 95 dB THD = 94 dB at 15 kHz fin, 200 KSPS
? SPI/DSP-Compatible Serial Interfaces With SCLK Input up to 15 MHz
? Single 5-V Supply
? Rail-to-Rail Analog Input With 500 kHz BW
? Two Input Options Available:
? TLC3541 – Single Channel Input
? TLC3545 – Single Channel, Pseudo-Differential Input

? (TLC3541) Optimized DSP Interface – Requires FS Input Only
? Low Power With Auto-Power Down
? Operating Current: 3.5 mA
? Auto-Powerdown Current: 5 uA

? Pin Compatible 12-/14-/16-Bit Family in 8-Pin SOIC and MSOP Packages
? APPLICATIONS
? ATE System
? Industrial Process Control
? Measurement
? Motor Control