LTC2255 Datasheet

• Sample Rate: 125Msps
• Single 3V Supply (2.85V to 3.4V)
• Low Power: 395mW/320mW
• 72.4dB SNR
• 88dB SFDR
• No Missing Codes
• Flexible Input: 1V_P-P to 2V_P-P Range
• 640MHz Full Power Bandwidth S/H
• Clock Duty Cycle Stabilizer
• Shutdown and Nap Modes
• Pin Compatible Family
  • 125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit)
  • 105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit)
  • 80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit)
  • 65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit)
  • 40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit)
  • 25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit)
  • 10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit)
• 32-Pin (5mm × 5mm) QFN Package

• Wireless and Wired Broadband Communication
• Imaging Systems
• Ultrasound
• Spectral Analysis
• Portable Instrumentation

The LTC2255 are 14-bit 125Msps, low power 3V A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2255 are perfect for demanding imaging and communications applications with AC performance that includes 72.3dB SNR and 85dB SFDR for signals at the Nyquist frequency.

DC specs include ±1LSB INL (typ), ±0.5LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1.3 LSB_RMS.

A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.3V logic.

A single-ended CLK input controls converter operation. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.