LTC1290CISW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1290CISW#TRPBF is a single-chip 12-bit data acquisition system featuring an 8-channel analog multiplexer, sample-and-hold circuit, and successive approximation A/D converter. It operates on a single 5V or dual ±5V supply with a maximum throughput of 50kHz. The device supports unipolar (12-bit) or bipolar (11-bit plus sign) conversions via software configuration. Serial I/O interfaces directly with microprocessors using standard full-duplex protocols, allowing selectable MSB/LSB-first output and variable word lengths of 8, 12, or 16 bits. It includes power shutdown capability for low-power applications.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 8-channel input multiplexer supporting single-ended or differential configurations
• Software-programmable unipolar/bipolar conversion modes and variable output word length (8/12/16 bits)
• Direct four-wire serial interface compatible with industry-standard MPU ports (SPI, Microwire)
• Low supply current of 6.0mA typical; power shutdown mode reduces consumption significantly

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel signal conditioning
• Data logging equipment with microprocessor-based architectures
• Portable instrumentation utilizing single-supply operation
• Automotive sensor interfaces needing overvoltage protection tolerance

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #TRPBF indicates lead-free tape and reel packaging. Confirm the 'I' grade designation corresponds to the -40°C to 85°C industrial temperature range. Ensure the SW package type matches the required PCB footprint. Cross-reference the manufacturer's latest datasheet for any updates to absolute maximum ratings or recommended operating conditions before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when 12-bit accuracy across eight channels is required within a compact integrated solution. Choose the CISW variant for industrial temperature ranges (-40°C to 85°C). Ensure the host microprocessor supports synchronous serial communication or can emulate it via parallel GPIO. Verify that the input signal source impedance allows for adequate sampling time at the desired clock frequency to maintain specified linearity.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1290 family of 12-bit data acquisition systems. The 'C' indicates commercial grade performance specifications, while 'I' denotes the industrial temperature extension. The 'SW' identifies the 20-lead Plastic SO Wide package. The '#TRPBF' suffix specifies lead-free composition and tape-and-reel shipping format, distinguishing it from bulk or PDIP variants.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed direct substitutes are not listed in the provided documentation. For pin-compatible alternatives, consider other Analog Devices 12-bit SAR ADCs with similar channel counts and serial interfaces. Verify electrical compatibility, particularly reference voltage requirements and serial protocol timing, when evaluating cross-model replacements.