features

Fast Throughput Rate: 1.25 MSPS at 5 V,

625 KSPS at 3 V

Wide Analog Input: 0 V to AVDD

Differential Nonlinearity Error: < ± 1 LSB

Integral Nonlinearity Error: < ± 1 LSB

8-to-1 Analog MUX – TLV1578

Internal OSC

Single 2.7-V to 5.5-V Supply Operation

Low Power: 12 mW at 3 V and 35 mW at 5 V

Auto Power Down of 1 mA Max

Software Power Down: 10 mA Max

Hardware Configurable

DSP and Microcontroller Compatible

Parallel Interface

Binary/Twos Complement Output

Hardware Controlled Extended Sampling

Channel Sweep Mode Operation and

Channel Select

Hardware or Software Start of Conversion

applications

Mass Storage and HDD

Automotive

Digital Servos

Process Control

General-Purpose DSP

Image Sensor Processing

description

The TLV1571/1578 is a 10-bit data acquisition system that combines an 8-channel input multiplexer (MUX), a

high-speed 10-bit ADC, and a parallel interface. The device contains two on-chip control registers allowing

control of channel selection, software conversion start, and power down via the bidirectional parallel port. The

control registers can be set to a default mode by applying a dummy RD signal when WR is tied low. This allows

the TLV1571/1578 to be configured by hardware. The MUX is independently accessible. This 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 TLV1571 is a single

channel analog input device with all the same functions as the TLV1578.

The TLV1571/TLV1578 operates from a single 2.7-V to 5.5-V power supply. It accepts an analog input range

from 0 V to AVDD and digitizes the input at a maximum 1.25 MSPS throughput rate at 5 V. The power dissipations

are only 12 mW with a 3-V supply or 35 mW with a 5-V supply. The device features an auto power-down mode

that automatically powers down to 1 mA 50 ns after conversion is performed. In software power-down mode, the

ADC is further powered down to only 10 mA.

Very high throughput rate, simple parallel interface, and low power consumption make the TLV1571/TLV1578

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