LTC2145-14 Datasheet | Linear Technology

Features n Two-Channel Simultaneously Sampling ADC n 73.1d B SNR n 90d B SFDR n Low Power: 189m W/149m W/113m W Total 95m W/75m W/57m W per Channel n Single 1.8V Supply n CMOS, DDR CMOS, or DDR LVDS Outputs n Selectable Input Ranges: 1VP-P to 2VP-P n 750MHz Full Power Bandwidth S/H n Optional Data Output Randomizer n Optional Clock Duty Cycle Stabilizer n Shutdown and Nap Modes n Serial SPI Port for Configuration n 64-Pin (9mm × 9mm) QFN Package APPLICATIONS n munications n Cellular Base Stations n Software Defined Radios n Portable Medical Imaging n Multi-Channel Data Acquisition n Nondestructive Testing LTC2145-14/ LTC2144-14/LTC2143-14 14-Bit, 125Msps/105Msps/ 80Msps Low Power Dual ADCs DESCRIPTION The LTC®2145-14/LTC2144-14/LTC2143-14 are 2-channel simultaneous sampling 14-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. They are perfect for demanding munications applications with AC performance that includes 73.1d B SNR and 90d B spurious free dynamic range (SFDR). Ultralow jitter of 0.08ps RMS allows undersampling of IF frequencies with excellent noise performance. DC specs include ±1LSB INL (typ), ±0.3LSB DNL (typ) and no missing codes over temperature. The transition noise is 1.2LSBRMS. The digital outputs can be either full rate CMOS, double data rate CMOS, or double data rate LVDS. A separate output power supply allows the CMOS output swing to range from 1.2V to 1.8V. 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. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 1.8V VDD CH 1 ANALOG S/H INPUT 14-BIT ADC CORE CH 2 ANALOG INPUT 125MHz CLOCK S/H 14-BIT ADC CORE CLOCK...