Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 400 Number of input channels 4 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 9 Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 5.5 SNR (dB) 71 Digital supply (min) (V) 4.5 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 400 Number of input channels 4 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 9 Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 5.5 SNR (dB) 71 Digital supply (min) (V) 4.5 Digital supply (max) (V) 5.5
SOIC (D) 16 59.4 mm² 9.9 x 6 TSSOP (PW) 16 32 mm² 5 x 6.4
  • Maximum Throughput 400 KSPS
  • Built-In Reference and 8× FIFO
  • Differential/Integral Nonlinearity Error:
    ±1 LSB
  • Signal-to-Noise and Distortion Ratio:
    69 dB, fi = 12 kHz
  • Spurious Free Dynamic Range: 75 dB,
    fi = 12 kHz
  • SPI/DSP-Compatible Serial Interfaces With SCLK up to 20 MHz
  • Single Supply 5 Vdc
  • Analog Input Range 0 V to Supply Voltage With 500 kHz BW
  • Hardware Controlled and Programmable Sampling Period
  • Low Operating Current (4 mA at 5.5 V External Ref, 6 mA at 5.5 V, Internal Ref)
  • Power Down: Software/Hardware Power-Down Mode (1 uA Max, Ext Ref),
    Auto Power-Down Mode (1 uA, Ext Ref)
  • Programmable Auto-Channel Sweep
  • Maximum Throughput 400 KSPS
  • Built-In Reference and 8× FIFO
  • Differential/Integral Nonlinearity Error:
    ±1 LSB
  • Signal-to-Noise and Distortion Ratio:
    69 dB, fi = 12 kHz
  • Spurious Free Dynamic Range: 75 dB,
    fi = 12 kHz
  • SPI/DSP-Compatible Serial Interfaces With SCLK up to 20 MHz
  • Single Supply 5 Vdc
  • Analog Input Range 0 V to Supply Voltage With 500 kHz BW
  • Hardware Controlled and Programmable Sampling Period
  • Low Operating Current (4 mA at 5.5 V External Ref, 6 mA at 5.5 V, Internal Ref)
  • Power Down: Software/Hardware Power-Down Mode (1 uA Max, Ext Ref),
    Auto Power-Down Mode (1 uA, Ext Ref)
  • Programmable Auto-Channel Sweep

The TLC2558 and TLC2554 are a family of high-performance, 12-bit low power, 1.6 us, CMOS analog-to-digital converters (ADC) which operate from a single 5 V power supply. These devices have three digital inputs and a 3-state output [chip select (CS\), serial input-output clock (SCLK), serial data input (SDI), and serial data output (SDO)] that provide a direct 4-wire interface to the serial port of most popular host microprocessors (SPI interface). When interfaced with a DSP, a frame sync (FS) signal is used to indicate the start of a serial data frame.

In addition to a high-speed A/D converter and versatile control capability, these devices have an on-chip analog multiplexer that can select any analog inputs or one of three internal self-test voltages. The sample-and-hold function is automatically started after the fourth SCLK edge (normal sampling) or can be controlled by a special pin, CSTART\, to extend the sampling period (extended sampling). The normal sampling period can also be programmed as short (12 SCLKs) or as long (24 SCLKs) to accommodate faster SCLK operation popular among high-performance signal processors. The TLC2558 and TLC2554 are designed to operate with very low power consumption. The power-saving feature is further enhanced with software/hardware/auto power down modes and programmable conversion speeds. The converter uses the external SCLK as the source of the conversion clock to achieve higher (up to 1.6 us when a 20 MHz SCLK is used) conversion speed. There is a 4-V internal reference available. An optional external reference can also be used to achieve maximum flexibility.

The TLC2558 and TLC2554 are a family of high-performance, 12-bit low power, 1.6 us, CMOS analog-to-digital converters (ADC) which operate from a single 5 V power supply. These devices have three digital inputs and a 3-state output [chip select (CS\), serial input-output clock (SCLK), serial data input (SDI), and serial data output (SDO)] that provide a direct 4-wire interface to the serial port of most popular host microprocessors (SPI interface). When interfaced with a DSP, a frame sync (FS) signal is used to indicate the start of a serial data frame.

In addition to a high-speed A/D converter and versatile control capability, these devices have an on-chip analog multiplexer that can select any analog inputs or one of three internal self-test voltages. The sample-and-hold function is automatically started after the fourth SCLK edge (normal sampling) or can be controlled by a special pin, CSTART\, to extend the sampling period (extended sampling). The normal sampling period can also be programmed as short (12 SCLKs) or as long (24 SCLKs) to accommodate faster SCLK operation popular among high-performance signal processors. The TLC2558 and TLC2554 are designed to operate with very low power consumption. The power-saving feature is further enhanced with software/hardware/auto power down modes and programmable conversion speeds. The converter uses the external SCLK as the source of the conversion clock to achieve higher (up to 1.6 us when a 20 MHz SCLK is used) conversion speed. There is a 4-V internal reference available. An optional external reference can also be used to achieve maximum flexibility.

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Type Title Date
* Data sheet 5-V, 12-Bit, 400 KSPS, 4/8 Channel, Low Power, Serial A-D Converter datasheet (Rev. A) 01 Jul 1999
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mar 2011

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SOIC (D) 16 View options
TSSOP (PW) 16 View options

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