LTC2249

U U FEATURES ■ Sample Rate: 80Msps ■ Single 3V Supply (2.7V to 3.4V) ■ Low Power: 222mW ■ 73dB SNR at 70MHz Input ■ 90dB SFDR at 70MHz Input ■ No Missing Codes ■ Flexible Input: 1VP-P to 2VP-P Range ■ 575MHz 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 × 5Umm) QFN Package APPLICATIO S ■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation LTC2249 14-Bit, 80Msps Low Power 3V ADC DESCRIPTIO The LTC®2249 is a 14-bit 80Msps, low power 3V A/D converter designed for digitizing high frequency, wide dynamic range signals. The LTC2249 is perfect for demanding imaging and communications applications with AC performance that includes 73dB SNR and 90dB SFDR for signals well beyond 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 1.2LSBRMS. A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.6V logic. A single-ended CLK input controls converter operation. An optional clock duty cycle stabilizer allows...