features

Fast Throughput Rate: 1.25 MSPS at 5 V,

625 KSPS at 3 V

Wide Analog Channel Input: 0 V to AVDD

Eight Analog Input Channels

Channel Auto-Scan

Differential Nonlinearity Error: < ±1 LSB

Integral Nonlinearity Error: < ±1 LSB

Signal-to-Noise and Distortion Ratio: 57 dB

Single 2.7-V to 5.5-V Supply Operation

Very Low Power: 40 mW at 5.5 V,

8 mW at 2.7 V

Autopower-Down: 300 mA Max

Software Power Down: 10 mA Max

Glueless Serial Interface to TMS320 DSPs

and (Q)SPI Compatible Microcontrollers

Programmable Internal Reference Voltage:

3.8-V Reference for 5-V Operation,

2.3-V Reference for 3-V Operation

applications

Mass Storage and Hard Disk Drive

Automotive

Digital Servos

Process Control

General-Purpose DSP

Image Sensor Processing

description

The TLV1570 is a 10-bit data acquisition system that combines an 8-channel input multiplexer (MUX), a

high-speed 10-bit ADC, an on-chip reference, and a high-speed serial interface. The device contains an on-chip

control register allowing control of channel selection, conversion start, reference voltage levels, and power

down via the serial port. The MUX is independently accessible, which allows the user to insert a signal

conditioning circuit such as an antialiasing filter or an amplifier, if required, between the MUX and the ADC.

Therefore one signal conditioning circuit can be used for all eight channels.

The TLV1570 operates from a single 2.7-V to 5.5-V power supply. The device accepts an analog input range

from 0 V to AVDD and digitizes the input at a maximum 1.25 MSPS throughput rate. Power dissipation is only

8 mW with a 2.7-V supply or 40 mW with a 5.5-V supply. The device features an autopower-down mode that

automatically powers down to 300 mA, 10 ns after a conversion is performed. With software power down

enabled, the device is further powered down to only 10 mA.

The TLV1570 communicates with digital microprocessors via a simple 4- or 5-wire serial port that interfaces

directly to Texas Instruments TMS320 DSPs, and SPIE and QSPIE compatible microcontrollers without using

additional glue logic.

A very high throughput rate, a simple serial interface, and low power consumption make the TLV1570 an ideal

choice for high-speed digital signal processing requiring multiple analog inputs.