LTC1290BCN/R

Analog To Digital Converters (ADC) Overview

The LTC1290BCN/R 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 and bipolar conversion modes with a maximum throughput rate of 50kHz. It operates on a single +5V supply or dual ±5V supplies, drawing 6.0mA. The component features a synchronous full-duplex serial interface compatible with industry standards, allowing direct connection to microprocessors. It is housed in a 20-lead PDIP package.

Analog To Digital Converters (ADC) Feature Summary

• 12-Bit Resolution: Guarantees no missing codes across the full operating temperature range.
• 8-Channel Multiplexer: Configurable for four differential or eight single-ended inputs with an on-chip sample-and-hold.
• Serial Interface: Four-wire synchronous full-duplex interface supporting MSB/LSB-first data and variable word lengths (8, 12, or 16 bits).
• Power Management: Software-programmable power shutdown mode reduces current consumption significantly when idle.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel signal acquisition.
• Data logging equipment for environmental monitoring.
• Embedded measurement systems interfacing with microcontrollers via SPI or Microwire protocols.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'R' against the manufacturer's official documentation, as standard listings typically utilize '#PBF' or '#TRPBF' for lead-free status. Confirm the package type corresponds to the 20-lead PDIP (N Package) variant. Ensure compatibility with the required operating temperature range of 0°C to 70°C for the BC grade before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high channel count integration without external multiplexers. The LTC1290BCN/R is suitable for designs needing direct serial connectivity to processors like the Motorola MC68HC05 or National COP402. Consider the 50kHz throughput limit and 13µs max conversion time when designing system timing 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. It consolidates functions that would otherwise require separate ADC, MUX, and S/H components. The BC grade indicates commercial temperature performance, while the N package denotes the plastic DIP form factor commonly used for prototyping and through-hole assembly.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult Analog Devices for current cross-reference recommendations if the LTC1290BCN/R is obsolete or unavailable.