23767

· 12-Bit-Resolution A/D Converter
· 10-ms Conversion Time Over Operating Temperature Range
· 11 Analog Input Channels
· 3 Built-In Self-Test Modes
· Inherent Sample and Hold Function
· Linearity Error . . . ±1 LSB Max
· On-Chip System Clock
· End-of-Conversion (EOC) Output
· Unipolar or Bipolar Output Operation (Signed Binary With Respect to Half of the Applied Referenced Voltage)
· Programmable MSB or LSB First
· Programmable Power Down
· Programmable Output Data Length
· CMOS Technology

There are two reference voltage inputs on the device, REF+ and REF. The voltage values on these terminals establish the upper and lower limits of the analog input to produce a full-scale and zero-scale reading respectively. These voltages and the analog input should not exceed the positive supply or be lower than ground consistent with the specified absolute maximum ratings. The digital output is at full scale when the input signal is equal to or higher than REF+ terminal voltage and at zero when the input signal is equal to or lower than REFterminal voltage.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 6.5 V
Input voltage range, V_I (any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to V_CC + 0.3 V
Output voltage range, V_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to V_CC + 0.3 V
Positive reference voltage, Vref+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  V_CC + 0.1 V
Negative reference voltage, Vref . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.1 V
Peak input current, I_I (any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Peak total input current (all inputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  ±30 mA
Operating free-air temperature range, T_A: TLV2543C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0 to 70
                                                                    TLV2543I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40 to 85
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to 150
Lead temperature 1,6 mm (1/16 inch) from the case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  260

† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE
1: All voltage values are with respect to the GND terminal with REF and GND wired together (unless otherwise noted).

The TLV2543C and TLV2543I are 12-bit, switched-capacitor, successive-approximation, analog-to-digital converters (ADCs). Each The TLV2543C and TLV2543I has three control inputs [chip select (CS), the input-output clock (I/O CLOCK), and the address input (DATA INPUT)] and is designed for communication with the serial port of a host processor or peripheral through a serial 3-state output. The device allows high-speed data transfers from the host. In addition to the high-speed converter and versatile control capability, the The TLV2543C and TLV2543I has an on-chip 14-channel multiplexer that can select any one of 11 inputs or any one of three internal self-test voltages. The sample-and-hold function is automatic. At the end of conversion, the end-of-conversion (EOC) 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. A switched-capacitor design allows low-error  conversion over the full operating temperature range. The TLV2543 is available in the DW, DB, and N packages. The TLV2543C is characterized for operation from 0 to 70, and the TLV2543I is characterized for operation from 40 to 85.