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LTC2156-14 - Dual 14-Bit 210Msps ADCs

The LTC®2157-14/LTC2156-14/LTC2155-14 are 2-channel simultaneous sampling 250Msps/210Msps/170Msps 14-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. They are perfect for demanding communications applications with AC performance that includes 70dB SNR and 90dB spurious free dynamic range (SFDR). The latency is only five clock cycles.

DC specs include ±0.85LSB INL (typ), ±0.25LSB DNL (typ) and no missing codes over temperature. The transition noise is 1.82LSBRMS.

The digital outputs are Double-Data Rate (DDR) LVDS.

The ENC+ and ENC– inputs can be driven differentially 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.

Features 70dB SNR 90dB SFDR Low Power: 650mW/616mW/567mW Total Single 1.8V Supply DDR LVDS Outputs Easy-to-Drive 1.5VP-P Input Range 1.25GHz Full Power Bandwidth S/H Optional Clock Duty Cycle Stabilizer Low Power Sleep and Nap Modes Serial SPI Port for Configuration Pin-Compatible 12-Bit Versions 64-Pin (9mm × 9mm) QFN Package Typical Application

Applications Communications Cellular Basestations Software Defined Radios Medical Imaging High Definition Video Testing and Measurement Instruments Packaging

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