LTC2285 Datasheet | Linear Technology

Features n Integrated Dual 14-Bit ADCs n Sample Rate: 125Msps n Single 3V Supply (2.85V to 3.4V) n Low Power: 790m W n 72.4d B SNR, 88d B SFDR n 110d B Channel Isolation at 100MHz n Flexible Input: 1VP-P to 2VP-P Range n 640MHz Full Power Bandwidth S/H n Clock Duty Cycle Stabilizer n Shutdown and Nap Modes n Data Ready Output Clock n Pin patible Family 125Msps: LTC2283 (12-Bit), LTC2285 (14-Bit) 105Msps: LTC2282 (12-Bit), LTC2284 (14-Bit) 80Msps: LTC2294 (12-Bit), LTC2299 (14-Bit) 65Msps: LTC2293 (12-Bit), LTC2298 (14-Bit) 40Msps: LTC2292 (12-Bit), LTC2297 (14-Bit) n 64-Pin (9mm × 9mm) QFN Package APPLICATIONS n Wireless and Wired Broadband munication n Imaging Systems n Spectral Analysis n Portable Instrumentation Dual 14-Bit, 125Msps Low Power 3V ADC DESCRIPTION The LTC®2285 is a 14-bit 125Msps, low power dual 3V A/D converter designed for digitizing high frequency, wide dynamic range signals. The LTC2285 is perfect for demanding imaging and munications applications with AC performance that includes 72.2d B SNR and 82d B SFDR for signals at the Nyquist frequency. Typical DC specs include ±1.5LSB INL, ±0.6LSB DNL. The transition noise is a low 1.3LSBRMS. 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 high performance at full speed for a wide range of clock duty cycles. A data ready output clock (CLKOUT) can be used to latch the output data. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION ANALOG INPUT A + INPUT S/H - 14-BIT PIPELINED ADC CORE CLK A CLK B CLOCK/DUTY CYCLE CONTROL CLOCK/DUTY CYCLE CONTROL ANALOG INPUT B + INPUT S/H - 14-BIT PIPELINED ADC CORE OUTPUT DRIVERS OVDD D13A - - - D0A OGND MUX CLKOUT OUTPUT DRIVERS OVDD D13B - - -...