The TLC548 and TLC549 are CMOS analog-to-digital converter (ADC) integrated circuits built around an 8-bit switched-capacitor successive-approximation ADC. These devices are designed for serial interface with a microprocessor or peripheral through a 3-state data output and an analog input. The TLC548 and TLC549 use only the input/output clock (I/O CLOCK) input along with the chip select (CS) input for data control. The maximum I/O CLOCK input frequency of the TLC548 is 2.048 MHz, and the I/O CLOCK input frequency of the TLC549 is specified up to 1.1 MHz.
Microprocessor Peripheral or Standalone Operation
8-Bit Resolution A/D Converter
Differential Reference Input Voltages
Conversion Time...17 µs Max
Total Access and Conversion Cycles Per Second
– TLC548...up to 45500
– TLC549...up to 40000
On-Chip Software-Controllable Sample-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-Operated Portable Instrumentation
Pinout and Control Signals Compatible With the TLC540 and TLC545 8-Bit A/D Converters and with the TLC1540 10-Bit A/D Converter
