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 μA

Pin Compatible 12-/14-/16-Bit Family in 8-Pin

SOIC and MSOP Packages

APPLICATIONS

ATE System

Industrial Process Control

Measurement

Motor Control

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 μs maximum

conversion time.