LTC2232/LTC2233 10-Bit,105Msps/ 80Msps ADCs UFEATURESDESCRIPTIO ■ Sample Rate: 105Msps/80Msps The LTC®2232 and LTC2233 are 105Msps/80Msps, sam- ■ 61dB SNR up to 140MHz Input pling 10-bit A/D converters designed for digitizing high ■ 75dB SFDR up to 200MHz Input frequency, wide dynamic range signals. The LTC2232/ ■ 775MHz Full Power Bandwidth S/H LTC2233 are perfect for demanding communications ■ Single 3.3V Supply applications with AC performance that includes 61dB SNR ■ Low Power Dissipation: 475mW/366mW and 75dB spurious free dynamic range for signals ■ Selectable Input Ranges: ±0.5V or ±1V up to 200MHz. Ultralow jitter of 0.15psRMS allows ■ No Missing Codes undersampling of IF frequencies with excellent noise ■ Optional Clock Duty Cycle Stabilizer performance. ■ Shutdown and Nap Modes DC specs include ±0.15LSB INL (typ), ±0.1LSB DNL (typ) ■ Data Ready Output Clock and ±0.8LSB INL, ±0.6LSB DNL over temperature. The ■ Pin Compatible Family transition noise is a low 0.12LSB 135Msps: LTC2224 (12-Bit), LTC2234 (10-Bit) RMS. 105Msps: LTC2222 (12-Bit), LTC2232 (10-Bit) A separate output power supply allows the outputs to drive 80Msps: LTC2223 (12-Bit), LTC2233 (10-Bit) 0.5V to 3.6V logic. ■ 48-Pin 7mm x 7mm QFN Package U The ENC+ and ENC– inputs may be driven differentially or APPLICATIO S single ended with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An optional clock duty cycle stabilizer allows high ■ Wireless and Wired Broadband Communication performance at full speed for a wide range of clock duty ■ Cable Head-End Systems cycles. ■ Power Amplifier Linearization ■ Communications Test Equipment , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. UTYPICAL APPLICATIO 3.3V VDD SFDR vs Input Frequency 0.5V 90 TO 3.6V REFH FLEXIBLE REFL REFERENCE 85 OVDD 4th OR HIGHER 80 + D9 75 10-BIT • ANALOG INPUT CORRECTION OUTPUT PIPELINED • 70 INPUT S/H LOGIC DRIVERS ADC CORE • 2nd OR 3rd – D0 SFDR (dBFS) 65 60 OGND 55 CLOCK/DUTY CYCLE 50 CONTROL 0 100 200 300 400 500 600 INPUT FREQUENCY (MHz) 22323 TA01b 22323 TA01 ENCODE INPUT 22323fa 1
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