LTC2227CUH#PBF

Analog To Digital Converters (ADC) Overview

The LTC2227CUH#PBF is a 12-bit, 40Msps low-power analog-to-digital converter (ADC) from Analog Devices. It operates on a single 3V supply (2.7V to 3.4V) with power dissipation of 120mW at full speed. The device features a flexible differential input range selectable via the SENSE pin, supporting ±0.5V, ±1V, or external reference voltages between 0.5V and 1V. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 71.4dB and Spurious Free Dynamic Range (SFDR) of 90dB at Nyquist frequencies. It integrates an internal reference, clock duty cycle stabilizer, and pipeline latency of five cycles.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with no missing codes over temperature
• 40Msps sampling rate with 120mW power consumption
• Flexible analog input range: ±0.5V, ±1V, or external reference
• Integrated clock duty cycle stabilizer for high performance
• Shutdown and Nap modes for power reduction

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems
• Imaging systems requiring high dynamic range
• Ultrasound instrumentation
• Spectral analysis equipment
• Portable instrumentation devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #PBF indicates lead-free finish and RoHS compliance. Confirm the 'C' grade specifies an operating temperature range of 0°C to 70°C. Ensure the package type matches the 32-lead (5mm × 5mm) Plastic QFN specification. Check for availability of development kits such as DC2227A if evaluation is required.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2227CUH#PBF when a 40Msps sampling rate is sufficient for the application bandwidth. Choose this part over the LTC2228 (65Msps) or LTC2226 (25Msps) based on specific throughput requirements. Use the 'C' grade version for commercial temperature ranges (0°C to 70°C). For industrial temperatures (-40°C to 85°C), select the 'I' grade variant (LTC2227IUH#PBF).

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC222x family of 12-bit ADCs, which includes the LTC2226 (25Msps), LTC2227 (40Msps), and LTC2228 (65Msps). These parts share pin compatibility and functional similarities, differing primarily in sampling speed and power consumption. The family is designed for demanding imaging and communications applications requiring low power and wide dynamic range.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the LTC2226CUH#PBF (25Msps) and LTC2228CUH#PBF (65Msps). For higher performance, consider the LTC2253 (125Msps) or LTC2252 (105Msps) families. Verify that the replacement meets the required sampling rate and power constraints.