TLV1570

2.7 V TO 5.5 V 8-CHANNEL 10-BIT 1.25-MSPS

SERIAL ANALOG-TO-DIGITAL CONVERTER

SLAS169A – DECEMBER 1997– REVISED SEPTEMBER 1998

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POST OFFICE BOX 655303

625 KSPS at 3 V

8 mW at 2.7 V

and (Q)SPI Compatible Microcontrollers

3.8-V Reference for 5-V Operation,

2.3-V Reference for 3-V Operation

applications

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 anti-aliasing 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

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

automatically powers down to 300

µA, 10 ns after a conversion is performed. With software power down

enabled, the device is further powered down to only 10

µA.

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

directly to Texas Instruments TMS320 DSPs, and SPI

™ and QSPI™ 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.

AVAILABLE OPTIONS

PACKAGED DEVICES

TA

SMALL OUTLINE

(DW)

SMALL OUTLINE

(PW)

0

°C to 70°C

TLV1570CDW

TLV1570CPW

–40

°C to 85°C

TLV1570IDW

TLV1570IPW

SPI and QSPI are trademarks of Motorola, Inc.

Copyright

© 1998, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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CH4

CH3

CH2

CH1

CH0

DGND

FS

SCLK

SDIN

AIN

MO

CH5

CH6

CH7

AGND

REF

CS

SDOUT

DW OR PW PACKAGE

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