Maximum Throughput 400 KSPS

Built-In Reference and 8× FIFO

Differential/Integral Nonlinearity Error:

±0.5 LSB Max

Signal-to-Noise and Distortion Ratio:

59 dB, fi = 12 kHz

Spurious Free Dynamic Range: 72 dB,

fi = 12 kHz

SPI/DSP-Compatible Serial Interfaces With

SCLK up to 20 MHz

Single Supply 5 Vdc

Analog Input Range 0 V to Supply Voltage

With 500 kHz BW

Hardware Controlled and Programmable

Sampling Period

Low Operating Current (4 mA at 5.5 V

External Ref, 6 mA at 5.5 V, Internal Ref)

Power Down: Software/Hardware

Power-Down Mode (1 mA Max, Ext Ref),

Auto Power-Down Mode (5 mA, Ext Ref)

Programmable Auto-Channel Sweep

Pin Compatible, 12-Bit Upgrades Available

TLC2554, TLC2558)

description

The TLC1518 and TLC1514 are a family of high-performance, 10-bit, low power, 1.4 ms, CMOS SAR

analog-to-digital converters (ADC) which operate from a single 5 V power supply. These devices 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 DSP, a frame sync (FS) signal is used to indicate the

start of a serial data frame.

In addition to a high-speed A/D converter and versatile control capability, these devices have an on-chip analog

multiplexer that can select any analog inputs or one of three internal self-test voltages. The sample-and-hold

function is automatically started after the fourth SCLK edge (normal sampling) or can be controlled by a special

pin, CSTART, to extend the sampling period (extended sampling). The normal sampling period can also be

programmed as short (12 SCLKs) or as long (24 SCLKs) to accommodate faster SCLK operation popular

among high-performance signal processors. The TLC1518 and TLC1514 are designed to operate with very low

power consumption. The power-saving feature is further enhanced with software/hardware/auto power down

modes and programmable conversion speeds. The converter uses the external SCLK as the source of the

conversion clock. There is a 4-V internal reference available and an optional external reference can also be used

to achieve maximum flexibility.