LTC1278-4IN#PBF

Analog To Digital Converters (ADC) Overview

The Analog Devices LTC1278-4IN#PBF is a 12-bit, 400ksps sampling analog-to-digital converter housed in a 24-pin PDIP package. It operates from a single +5V or dual ±5V supply, consuming 75mW during active conversion and 8.5mW in shutdown mode. The device integrates a 200ns sample-and-hold circuit, an internally trimmed clock, and a precision 2.42V reference. Key electrical specifications include ±1LSB INL and DNL, 70dB S/(N+D) at 100kHz input, and a full power bandwidth of 4MHz. The industrial temperature range extends from -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with no missing codes over the operating temperature range
• Integrated internal clock synchronized to sample commands, eliminating external clock jitter issues
• Flexible parallel interface with three-state outputs compatible with DSPs and microprocessors
• Power-down feature with instant wake-up capability for energy efficiency

Analog To Digital Converters (ADC) Applications

• High-speed data acquisition systems
• Multiplexed data acquisition applications
• Digital signal processing front-ends
• Audio and telecommunications signal processing
• Spectrum analysis equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific speed grade suffix '-4' indicates a maximum sampling frequency of 400ksps, distinct from the -5 grade. Confirm the 'IN' designation corresponds to the industrial temperature range (-40°C to +85°C) and the PDIP-24 through-hole package. Ensure the '#PBF' suffix confirms lead-free and RoHS compliance status as per manufacturer standards.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 400ksps throughput are required with low power consumption. The integrated reference and clock simplify design by reducing external component count. Consider the bipolar input range of ±2.5V with dual supplies or unipolar 0V to 5V with a single supply. Ensure the driving amplifier can settle within the 200ns acquisition time to maintain accuracy.

Analog To Digital Converters (ADC) Part Context

The LTC1278-4 is part of the LTC1278 family of 12-bit sampling ADCs. The '-4' suffix denotes the 400ksps speed grade, while the '-5' variant supports 500ksps. Both share identical pinouts, architecture, and performance characteristics except for the maximum sampling rate and conversion time limits.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify compatibility with existing system constraints if considering alternative manufacturers.