12-Bit, 200 KSPS, 11 Channel, Low Power, Serial ADC with Internal Reference
Product details
Parameters
Package | Pins | Size
Features
- 12-Bit Resolution Analog-to-Digital Converter
(ADC) - Up to 200-kSPS (150-kSPS for 3 V) Throughput
Over Operating Temperature Range With 12-Bit
Output Mode - 11 Analog Input Channels
- Three Built-In Self-Test Modes
- Inherent Sample and Hold Function
- Programmable Reference Source (2.048 / 4.096 V
Internal or External) - Inherent Sample and Hold Function
- Linearity Error of ±1 LSB (Maximum)
- On-Chip Conversion Clock
- Programmable Conversion Status Output: INT
or EOC - Unipolar or Bipolar Output Operation
- Programmable Most Significant Bit (MSB) or Least
Significant Bit (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)
Description
The TLV2556 device is a 12-bit switched-capacitor successive-approximation analog-to-digital converter (ADC). The ADC has three control inputs: chip select (CS), the input-output clock, and the address and control input (DATAIN). These inputs communicate 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. If pin 19 is programmed as INT, the signal goes low when the 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. An internal reference is available and its voltage level is programmable through configuration register 2 (CFGR2).
The TLV2556 is characterized for operation from TA = 40°C to +85°C.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TLV2556 12-Bit 200-kSPS 11-Channel Low-Power Serial ADC With Internal Reference datasheet (Rev. B) | Dec. 23, 2015 |
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | May 21, 2015 | |
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 2 | Mar. 17, 2011 | |
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) | Nov. 10, 2010 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The interface board consists of two signal conditioning sites, two serial EVM sites, and a parallel EVM site. Regardless of the interface type, all EVMs compatible with the 5-6K Interface Board have a standard analog interface and standard power connector. Three position screw terminals J1 and J2 (...)
Software development
IMPORTANT: Please read the following before downloading the (...)
Features
The data converter support plug-in (DCP) is a component of TI's Code Composer Studio and offers easy-to-use windows for the "point-and-click" configuration of TI's data converters from within the integrated development environment (IDE), preventing illegal combinations of settings. The DCP (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (DW) | 20 | View options |
TSSOP (PW) | 20 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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