The TLV2556IPW is a 12-bit switched-capacitor successive-approximation Analog-to-digital Converter (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. 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.
Inherent sample and hold function
Programmable reference source
On-chip conversion clock
Programmable most significant bit or least significant bit first
Programmable power down
Programmable output data length
SPI-compatible serial interface with I/O clock frequencies up to 15MHz
(EN)
