LTC1297BCN8#PBF

ADCs/DACs - Special Purpose Overview

The LTC1297BCN8#PBF is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates a switched-capacitor successive approximation A/D converter, a differential input sample-and-hold on the positive terminal, and serial I/O within an 8-pin plastic DIP package. The device operates on a single 5V supply with a maximum throughput rate of 60kHz. Key specifications include a typical supply current of 6.0mA and a power shutdown current of 5mA when idle. It features a direct three-wire interface compatible with most microprocessor serial ports.

ADCs/DACs - Special Purpose Feature Summary

• 12-bit resolution with a maximum conversion time of 12ms over temperature.
• Built-in sample-and-hold circuit on the positive analog input.
• Power shutdown mode reduces supply current to 5mA typically when CS is high.
• Direct 3-wire serial interface supporting MSB-first or LSB-first data sequences.

ADCs/DACs - Special Purpose Applications

• Remote digitization of analog signals where low interconnect count is required.
• Microprocessor-based data acquisition systems requiring single-supply operation.
• DSP applications utilizing the device's AC characteristics and 60kHz throughput.

ADCs/DACs - Special Purpose Procurement Notes

Verify that the ordering suffix #PBF indicates RoHS compliance and lead-free construction as per manufacturer standards. Confirm the BC grade corresponds to the commercial operating temperature range of 0°C to 70°C. Ensure the N8 package designation matches the required 8-lead plastic DIP form factor for the target PCB layout.

ADCs/DACs - Special Purpose Selection Notes

Select the LTC1297 variant specifically if power consumption during idle periods is a critical constraint, as it powers down automatically between conversions. The LTC1292 lacks this feature and maintains higher standby current. Ensure the application voltage does not exceed VCC + 0.3V to avoid forward biasing internal protection diodes which can cause conversion errors.

ADCs/DACs - Special Purpose Part Context

This component belongs to the LTC1292/LTC1297 family of single-chip 12-bit data acquisition systems. The LTC1297 is distinguished from the LTC1292 by its automatic power shutdown capability after each conversion cycle. Both devices utilize LTCMOS switched-capacitor technology to achieve high accuracy in a compact 8-pin DIP package suitable for space-constrained designs.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices marketing for parts specified with wider operating temperature ranges or alternative package options such as ceramic DIP (J8).