TLV1570 Datasheet, PDF (1/28 Pages) Texas Instruments – 2.7 V TO 5.5 V 8-CHANNEL 10-BIT 1.25-MSPS SERIAL ANALOG-TO-DIGITAL CONVERTER

D Fast Throughput Rate: 1.25 MSPS at 5 V,
625 KSPS at 3 V
D Wide Analog Channel Input: 0 V to AV_DD
D Eight Analog Input Channels
D Channel Auto-Scan
D Differential Nonlinearity Error: < ±1 LSB
D Integral Nonlinearity Error: < ±1 LSB
D Signal-to-Noise and Distortion Ratio: 57 dB
D Single 2.7-V to 5.5-V Supply Operation
D Very Low Power: 40 mW at 5.5 V,
8 mW at 2.7 V
D Auto-Power Down: 300 µA Max
D Software Power Down: 10 µA Max
D Glueless Serial Interface to TMS320 DSPs
and (Q)SPI Compatible Microcontrollers
D Programmable Internal Reference Voltage:
3.8-V Reference for 5-V Operation,
2.3-V Reference for 3-V Operation
description
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
applications
D Mass Storage and Hard Disk Drive
D Automotive
D Digital Servos
D Process Control
D General Purpose DSP
D Image Sensor Processing
DW OR PW PACKAGE
(TOP VIEW)
CH4
1
CH3
2
CH2
3
CH1
4
CH0
5
DV_DD
6
DGND
7
FS
8
SCLK
9
SDIN
10
20
AIN
19
MO
18
CH5
17
CH6
16
CH7
15
AV_DD
14
AGND
13
REF
12
CS
11
SDOUT
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
from 0 V to AV_DD 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 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.
TA
0°C to 70°C
– 40°C to 85°C
AVAILABLE OPTIONS
PACKAGED DEVICES
SMALL OUTLINE
(DW)
SMALL OUTLINE
(PW)
TLV1570CDW
TLV1570CPW
TLV1570IDW
TLV1570IPW
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.
SPI and QSPI are trademarks of Motorola, Inc.
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.
Copyright © 1998, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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