Description:

The TLC548 and TLC549 are CMOS analog-to-digital converter (ADC) integrated circuits built around an 8-bitswitched-capacitor successive-approximation ADC. These devices are designed for serial interface with amicroprocessor or peripheral through a 3-state data output and an analog input. The TLC548 and TLC549 useonly the input/output clock (I/O CLOCK) input along with the chip select (CS) input for data control. Themaximum I/O CLOCK input frequency

Microprocessor Peripheral or StandaloneOperation

8-Bit Resolution A/D Converter

Differential Reference Input Voltages

Conversion Time . . . 17 µs Max

Total Access and Conversion Cycles PerSecond– TLC548 . . . up to 45 500– TLC549 . . . up to 40 000

On-Chip Software-ControllableSample-and-Hold Function

Total Unadjusted Error... ±0.5 LSB Max

4-MHz Typical Internal System Clock

Wide Supply Range . . . 3 V to 6 V

Low Power Consumption . . . 15 mW Max

Ideal for Cost-Effective, High-Performance Applications including Battery-OperatedPortable Instrumentation

Pinout and Control Signals CompatibleWith the TLC540 and TLC545 8-Bit A/DConverters and with the TLC1540 10-BitA/D Converter

CMOS Technology