TLV2553
SLAS354B – SEPTEMBER 2001 – REVISED SEPTEMBER 2002
12-BIT, 200-KSPS, 11-CHANNEL, LOW-POWER, SERIAL ADC
In addition to the high-speed converter and versatile
control capability, the device has an on-chip 14-channel
multiplexer that can select any one of 11 inputs or any
one of three internal self-test voltages using
configuration register 1. The sample-and-hold function
is automatic. At the end of conversion, when
programmed as EOC, the pin 19 output goes high to
indicate that conversion is complete. The converter
incorporated in the device features differential, high-
impedance reference inputs that facilitate ratiometric
conversion, scaling, and isolation of analog circuitry
from logic and supply noise. A switched-capacitor
design allows low-error conversion over the full
operating temperature range.
FEATURES
12-Bit-Resolution A/D Converter
Up to 200 KSPS (150 KSPS for 3 V)
Throughput Over Operating Temperature
Range With 12-Bit Output Mode
11 Analog Input Channels
3 Built-In Self-Test Modes
Inherent Sample and Hold Function
Linearity Error . . . ±1 LSB Max
On-Chip Conversion Clock
Unipolar or Bipolar Output Operation
Programmable MSB or LSB First
Programmable Power Down
The TLV2553I is characterized for operation from
T = –40°C to 85°C. See available options table for
A
Programmable Output Data Length
package options.
SPI Compatible Serial Interface With I/O Clock
Frequencies up to 15 MHz (CPOL=0, CPHA=0)
DW AND PW PACKAGE
(TOP VIEW)
APPLICATIONS
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
GND
V
CC
EOC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
Process Control
Portable Data Logging
Battery-Powered Instruments
Automotive
I/O CLOCK
DATA IN
DATA OUT
CS
DESCRIPTION
14 REF+
13
12
11
REF–
AIN10
AIN9
The TLV2553 is
a
12-bit, switched-capacitor,
successive-approximation, analog-to-digital converter.
The ADC has three control inputs [chip select (CS), the
input-output clock, and the address/control input
(DATAIN)], designed for communication with the serial
port of a host processor or peripheral through a serial
3-state output.
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.
PRODUCTION DATA information is current as of publication date.
Copyright 2002, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
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