TLV2543CN
TLV2543CN - 12-Bit 11-Channel 66 kSPS ADC | Texas Instruments
The Texas Instruments TLV2543CN is a 12-bit, 11-channel, successive-approximation analog-to-digital converter with a 66 kSPS conversion rate, serial output, programmable power-down, MSB/LSB-first data transfer, and built-in self-test in a 20-pin PDIP package. The converter uses switched-capacitor, successive-approximation conversion and provides an inherent sample-and-hold function. Its 10 µs conversion time and 11-channel multiplexing make it suitable for compact industrial measurement systems that need several analog inputs without allocating a separate converter to every signal.
An analog-to-digital converter is an ADC, a mixed-signal semiconductor that converts a continuously varying analog voltage into a numeric code for processing, measurement, logging, or control. The TLV2543 belongs to the successive-approximation ADC family and the broader data-converter and signal-processing IC hierarchy. Its 12-bit resolution provides 4,096 quantization levels, while its serial interface reduces the number of signal lines required when compared with a parallel-output ADC.
The headline capabilities include 12-bit resolution, an 11-channel analog input multiplexer, and a maximum throughput of 66 kSPS. The device supports both MSB-first and LSB-first serial output formats, giving the host controller flexibility in clocking and data processing. Programmable power-down helps reduce consumption when measurements are intermittent, while three built-in self-test modes support diagnostic checks of the converter and its serial interface.
Internally, the switched-capacitor SAR architecture compares the sampled input against a generated reference during successive conversion steps. An inherent sample-and-hold stage isolates the selected input during conversion, while the 11-to-1 multiplexer allows one converter core to service multiple analog sources. The manufacturer identifies the device as a 1 SAR ADC with 11 input channels and a serial control/data interface.
Typical uses include industrial process monitoring, environmental sensing, instrumentation, laboratory measurement, and embedded control systems. An ADC can be used when the system must repeatedly select one of several sensors, convert the selected voltage, and transfer the resulting code over a compact serial bus. The TLV2543CN is particularly relevant where 12-bit resolution is sufficient but the number of available pins or PCB area is constrained.
Designers should confirm the actual reference voltage, analog input range, acquisition timing, digital interface levels, and operating-temperature limits against the manufacturer datasheet before layout. Because this part is a multiplexed converter, source impedance, sampling charge, settling time, and protection-network capacitance can affect conversion accuracy. Decouple the supply and reference rails locally, keep analog routing away from fast digital signals, and account for the 10 µs conversion time when scheduling scans.
This page consolidates the verified 12-bit, 66 kSPS, 11-channel, serial-output, power-down, and self-test characteristics with package information, application guidance, and a careful drop-in-replacement assessment. Because verified pricing, detailed electrical limits, and a complete pin map were not supplied, those items are explicitly marked for verification rather than inferred.
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