TLV2553_15 Datasheet, PDF (1/36 Pages) Texas Instruments – 11-Channel, Low-Power, Serial ADC

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TLV2553
SLAS354C – SEPTEMBER 2001 – REVISED SEPTEMBER 2015
TLV2553 12-Bit, 200-KSPS, 11-Channel, Low-Power, Serial ADC
1 Features
•1 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 Maximum
• On-Chip Conversion Clock
• Unipolar or Bipolar Output Operation
• Programmable MSB or LSB First
• Programmable Power Down
• Programmable Output Data Length
• SPI Compatible Serial Interface With I/O Clock
Frequencies up to 15 MHz (CPOL=0, CPHA=0)
2 Applications
• Process Control
• Portable Data Logging
• Battery-Powered Instruments
3 Description
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.
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.
The TLV2553I is characterized for operation from
T_A = –40°C to 85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLV2553IPW
TSSOP (20)
6.50 mm × 4.40 mm
TLV2553IDW
SOIC (20)
12.80 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
V_CC
20
REF + REF −
14
13
3
AIN0 ¹
AIN1 ²
AIN2 ³
AIN3 ⁴
AIN4 ⁵
AIN5 ⁶
AIN6 ⁷
AIN7 ⁸
AIN8 ⁹
AIN9 ¹¹
AIN10 ¹²
17
DATA IN
15
CS
18
I/O CLOCK
Self Test
Reference CTRL
14-Channel
Analog
Multiplexer
Sample
and Hold
4 _{Input Address}
Register
Control Logic
and I/O
Counters
Low Power
12-Bit
SAR ADC
12
Output Data
Register
4
12
12-to-1
Data
Selector
and Driver
Internal OSC
19 _EOC
16 _DATA
OUT
10
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.