LTC1289CCN#PBF

ADCs/DACs - Special Purpose Overview

The LTC1289CCN#PBF is a 3V 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 in a 20-lead plastic DIP package. The device operates on a single 3.3V supply or ±3.3V dual supplies with a minimum guaranteed voltage of 2.7V. Key electrical specifications include a maximum throughput rate of 25kHz, a conversion time of 26µs max over temperature, and low supply currents of 1.0mA. The component supports software-programmable features such as unipolar/bipolar conversions, variable data word lengths (8, 12, or 16 bits), and power shutdown modes.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 8-channel input multiplexer configurable for 4 differential or 8 single-ended inputs.
• Software programmable for unipolar/bipolar conversions and variable output word lengths (8/12/16 bits).
• Direct 4-wire serial interface compatible with most MPU serial ports and all parallel ports.
• Built-in sample-and-hold with power shutdown capability for low power consumption.

ADCs/DACs - Special Purpose Applications

• Battery-powered instrumentation systems requiring low voltage operation.
• Industrial process control loops utilizing serial communication interfaces.
• Data acquisition modules for microprocessor-based embedded systems.
• Portable test equipment operating on single-cell lithium batteries.

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free compliance when sourcing this component. Confirm the package type corresponds to the 20-lead plastic DIP (N package) as specified in the datasheet. Ensure that the supplier documentation matches the Analog Devices Inc. manufacturer identification for the LTC1289 series.

ADCs/DACs - Special Purpose Selection Notes

Select the LTC1289CCN#PBF for applications requiring 12-bit resolution at up to 25ksps sampling rates. Choose this part if the design necessitates a single 3.3V supply or ±3.3V dual supplies. Consider the serial interface requirements; this component uses a synchronous full-duplex protocol. Verify that the input signal range fits within the reference voltage span defined by REF+ and REF– pins.

ADCs/DACs - Special Purpose Part Context

The LTC1289 belongs to the Linear Technology (now Analog Devices) family of 3V data acquisition components. It is functionally similar to the LTC1290 and LTC1291 but offers integrated multiplexing and sample-and-hold capabilities. The CCN variant specifies the commercial temperature range (0°C to 70°C) and the plastic DIP package. This component serves as a complete solution for multi-channel signal digitization in low-power environments.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices marketing for parts specified with wider operating temperature ranges or alternative package options such as the SW (SOIC) or J (Ceramic DIP) packages.