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.