TLV2556

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12-Bit, 200 KSPS, 11 Channel, Low Power, Serial ADC with Internal Reference

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Data sheet

document-pdfAcrobat TLV2556 12-Bit 200-kSPS 11-Channel Low-Power Serial ADC With Internal Reference datasheet (Rev. B) PDF | HTML

TLV2556

ACTIVE

Data sheet

Order now

Product details

Resolution (bps)

12

Sample rate (max) (ksps)

200

Number of input channels

11

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External, Internal

Input voltage range (max) (V)

5.5

Input voltage range (min) (V)

0

Features

Oscillator

Operating temperature range (°C)

-40 to 85

Power consumption (typ) (mW)

2.43

Analog supply (min) (V)

2.7

Analog supply voltage (max) (V)

5.5

SNR (dB)

69.5

Digital supply (min) (V)

2.7

Digital supply (max) (V)

5.5

Resolution (bps)

12

Sample rate (max) (ksps)

200

Number of input channels

11

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External, Internal

Input voltage range (max) (V)

5.5

Input voltage range (min) (V)

0

Features

Oscillator

Operating temperature range (°C)

-40 to 85

Power consumption (typ) (mW)

2.43

Analog supply (min) (V)

2.7

Analog supply voltage (max) (V)

5.5

SNR (dB)

69.5

Digital supply (min) (V)

2.7

Digital supply (max) (V)

5.5

SOIC (DW)

20

131.84 mm² 12.8 x 10.3

TSSOP (PW)

20

41.6 mm² 6.5 x 6.4

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)

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)

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 T_A = –40°C to +85°C.

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 T_A = –40°C to +85°C.

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