LTC2289CUP

Analog To Digital Converters (ADC) Overview

The LTC2289CUP is a dual 10-bit, 80Msps low noise analog-to-digital converter (ADC) operating from a single 3V supply. It features a pipeline architecture with integrated sample-and-hold circuits for each channel. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 61.6dB and Spurious Free Dynamic Range (SFDR) of 85dB at a 70MHz input frequency. The device supports flexible analog input ranges from ±0.5V to ±1V peak-to-peak via the SENSE pins. Power consumption is typically 422mW at full speed. It includes clock duty cycle stabilization, shutdown/nap modes, and multiplexed or separate digital output buses.

Analog To Digital Converters (ADC) Feature Summary

• Dual 10-bit ADC cores with 80Msps sampling rate per channel
• Low power operation: 422mW typical at 80Msps on a single 3V supply
• High dynamic range: 61.6dB SNR and 85dB SFDR at 70MHz input
• Flexible analog input range: ±0.5V to ±1V selectable via SENSE pins
• Integrated clock duty cycle stabilizer for wide duty cycle tolerance

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems
• Imaging systems requiring high-speed digitization
• Spectral analysis equipment
• Portable instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #PBF indicates lead-free status and RoHS compliance. Confirm the package type is QFN-64 (9mm × 9mm). Ensure the temperature grade matches the 'C' suffix for commercial range (0°C to 70°C). Check for availability in tape and reel options if automated assembly is required.

Analog To Digital Converters (ADC) Selection Notes

Select this component when dual-channel 10-bit resolution at 80Msps is required. Compare against the LTC2280 (105Msps) if higher speed is needed, or the LTC2288 (65Msps) for lower power. Ensure the analog input drive circuitry can support the required source impedance (<100Ω) to maintain specified SFDR. Verify that the OVDD supply voltage accommodates the target logic levels (0.5V to 3.6V).

Analog To Digital Converters (ADC) Part Context

The LTC2289 belongs to the LTC22xx family of high-speed, high-dynamic-range ADCs. It is pin-compatible with other members such as the LTC2280 (105Msps), LTC2288 (65Msps), and various 12-bit/14-bit variants like the LTC2294 and LTC2299. This compatibility allows for design upgrades or downgrades in sampling rate and resolution without changing the PCB layout.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the LTC2280 (higher speed, 105Msps) and LTC2288 (lower speed, 65Msps). For different resolutions, consider the LTC2294 (12-bit) or LTC2299 (14-bit) which operate at 80Msps. Verify thermal characteristics and power dissipation differences when substituting.