LTC1290BISW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1290BISW#TRPBF is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates an 8-channel analog multiplexer, a sample-and-hold circuit, and a successive approximation A/D converter. The device supports both unipolar (12-bit) and bipolar (11-bit plus sign) conversions with a maximum throughput rate of 50kHz. It operates on a single +5V or dual ±5V supply and features a synchronous full-duplex four-wire serial interface compatible with industry-standard microprocessor ports. The component is housed in a 20-lead SO Wide package and is rated for an operating temperature range of –40°C to 85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 12-bit SAR ADC with 8-channel input multiplexer configurable for single-ended or differential inputs
• Software-programmable features including unipolar/bipolar conversion, MSB/LSB-first data sequence, variable word length (8, 12, or 16 bits), and power shutdown mode
• Direct four-wire serial interface to microprocessors with support for standard SPI, MICROWIRE, and parallel port emulation
• Low supply current of 6.0mA typical with power-down capability reducing consumption to approximately 5µA

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel signal acquisition
• Data logging equipment with moderate speed requirements
• Microprocessor-based measurement systems interfacing via serial ports
• Battery-powered instrumentation utilizing power shutdown modes

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging and lead-free compliance. Confirm the 'I' grade designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure the order quantity matches the reel specifications provided by the distributor. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm current production status.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an integrated solution combining multiplexing, sampling, and 12-bit conversion is required. The LTC1290BISW#TRPBF is suitable for applications needing up to 50ksps throughput across eight channels. Consider the serial interface compatibility with the target microcontroller. Verify that the input voltage ranges align with the ±5V common mode specification and that the 20-SOIC package fits the PCB layout constraints.

Analog To Digital Converters (ADC) Part Context

The LTC1290 belongs to the Linear Technology (now Analog Devices) family of single-chip data acquisition systems. The BISW variant specifically denotes the industrial temperature grade (-40°C to 85°C) and the 20-lead SO Wide surface-mount package. The #TRPBF suffix confirms it is supplied in a tape and reel format and is RoHS compliant. This part is distinct from PDIP or ceramic DIP versions available in the same series.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the LTC1290CISW#TRPBF and LTC1290DISW#TRPBF. These variants share the same functional architecture but differ in temperature grades (Commercial and Extended, respectively). Verify pinout and electrical specifications against the datasheet before substitution.