TLV2556 12-Bit, 200 KSPS, 11 Channel, Low Power, Serial ADC with Internal Reference | TI.com

TLV2556 (ACTIVE) 12-Bit, 200 KSPS, 11 Channel, Low Power, Serial ADC with Internal Reference

 

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.

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)

WEBENCH® Designer TLV2556



Parametrics

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) Rating
TLV2556 Order now 12     200     11     SPI     -40 to 85     SOIC | 20
TSSOP | 20    
4.08 | 1ku     2.43     20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
SAR     Single-Ended     Multiplexed     Ext
Int    
Oscillator     5.5     0     2.7     5.5     2.7     5.5     1     69.5     Catalog    
TLC1542 Order now 10     38     11     SPI     0 to 70     PDIP | 20
PLCC | 20
SOIC | 20    
4.23 | 1ku     4     20PDIP: 229 mm2: 9.4 x 24.33 (PDIP | 20)
20PLCC: 98 mm2: 9.9 x 9.9 (PLCC | 20)
20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)    
SAR     Single-Ended     Multiplexed     Ext         5.5     0     4.5     5.5     4.5     5.5     0.5       Catalog    
TLC1543 Order now 10     38     11     SPI     -40 to 125
0 to 70    
PDIP | 20
PLCC | 20
SOIC | 20
SSOP | 20    
2.31 | 1ku     4     20PDIP: 229 mm2: 9.4 x 24.33 (PDIP | 20)
20PLCC: 98 mm2: 9.9 x 9.9 (PLCC | 20)
20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)
20SSOP: 38 mm2: 5.3 x 7.2 (SSOP | 20)    
SAR     Single-Ended     Multiplexed     Ext         5.5     0     4.5     5.5     4.5     5.5     1       Catalog    
TLC2543 Order now 12     66     11     SPI     -40 to 85     PDIP | 20
PLCC | 20
SOIC | 20
SSOP | 20    
5.75 | 1ku     5     20PDIP: 229 mm2: 9.4 x 24.33 (PDIP | 20)
20PLCC: 98 mm2: 9.9 x 9.9 (PLCC | 20)
20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)
20SSOP: 38 mm2: 5.3 x 7.2 (SSOP | 20)    
SAR