Features

• Sample Rate: 135Msps
• 61dB SNR up to 200MHz Input
• 75dB SFDR up to 400MHz Input
• 775MHz Full Power Bandwidth S/H
• Single 3.3V Supply
• Low Power Dissipation: 630mW
• CMOS Outputs
• Selectable Input Ranges: ±0.5V or ±1V
• No Missing Codes
• Optional Clock Duty Cycle Stabilizer
• Shutdown and Nap Modes
• Data Ready Output Clock
• Pin Compatible Family
  135Msps: LTC2224 (12-Bit), LTC2234 (10-Bit)
  105Msps: LTC2222 (12-Bit), LTC2232 (10-Bit)
  80Msps: LTC2223 (12-Bit), LTC2233 (10-Bit)
• 48-Pin 7mm × 7mm QFN Package

Typical Application

Description

The LTC2234 is a 135Msps, sampling 10-bit A/D converter designed for digitizing high frequency, wide dynamic range signals. The LTC2234 is perfect for demanding communications applications with AC performance that includes 60.5dB SNR and 75dB spurious free dynamic range for signals up to 400MHz. Ultralow jitter of 0.15ps_RMS allows undersampling of IF frequencies with excellent noise performance.

DC specs include ±0.2LSB INL (typ), ±0.1LSB DNL (typ) and ±0.8LSB INL, ±0.6LSB DNL over temperature. The transition noise is a low 0.12LSB_RMS.

A separate output power supply allows the CMOS output swing to range from 0.5V to 3.6V.

The ENC⁺ and ENC^– inputs may be driven differentially or single ended with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.