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LTC2221 Datasheet(PDF) 1 Page - Linear Technology |
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LTC2221 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 32 page  LTC2220/LTC2221 1 22201fa FEATURES DESCRIPTIO TYPICAL APPLICATIO 12-Bit,170Msps/ 135Msps ADCs The LTC ®2220 and LTC2221 are 170Msps/135Msps, sam- pling 12-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2220/ LTC2221 are perfect for demanding communications applications with AC performance that includes 67.5dB SNR and 80dB spurious free dynamic range for signals up to 170MHz. Ultralow jitter of 0.15psRMS allows undersampling of IF frequencies with excellent noise performance. DC specs include ±0.4LSB INL (typ), ±0.3LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 0.5LSBRMS. The digital outputs can be either differential LVDS, or single-ended CMOS. There are three format options for the CMOS outputs: a single bus running at the full data rate or two demultiplexed buses running at half data rate with either interleaved or simultaneous update. A separate output power supply allows the CMOS output swing to range from 0.5V to 3.6V. 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. – + INPUT S/H CORRECTION LOGIC OUTPUT DRIVERS 12-BIT PIPELINED ADC CORE CLOCK/DUTY CYCLE CONTROL FLEXIBLE REFERENCE D11 • • • D0 ENCODE INPUT REFH REFL ANALOG INPUT 22201 TA01 CMOS OR LVDS 0.5V TO 3.6V 3.3V VDD OVDD OGND APPLICATIO S SFDR vs Input Frequency 0 600 500 400 100 200 300 INPUT FREQUENCY (MHz) 80 90 100 22201 TA01b 70 60 40 50 4th OR HIGHER 2nd OR 3rd , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ■ Sample Rate: 170Msps/135Msps ■ 67.5dB SNR up to 140MHz Input ■ 80dB SFDR up to 170MHz Input ■ 775MHz Full Power Bandwidth S/H ■ Single 3.3V Supply ■ Low Power Dissipation: 890mW/660mW ■ LVDS, CMOS, or Demultiplexed CMOS Outputs ■ Selectable Input Ranges: ±0.5V or ±1V ■ No Missing Codes ■ Optional Clock Duty Cycle Stabilizer ■ Shutdown and Nap Modes ■ Data Ready Output Clock ■ Pin Compatible Family 185Msps: LTC2220-1 (12-Bit) 170Msps: LTC2220 (12-Bit), LTC2230 (10-Bit) 135Msps: LTC2221 (12-Bit), LTC2231 (10-Bit) ■ 64-Pin 9mm × 9mm QFN Package ■ Wireless and Wired Broadband Communication ■ Cable Head-End Systems ■ Power Amplifier Linearization ■ Communications Test Equipment |
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Similar Description - LTC2221 |
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