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.