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LTC2253 Datasheet(PDF) 1 Page - Linear Technology |
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LTC2253 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 24 page  LTC2253/LTC2252 1 22532fa FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO ■ Sample Rate: 125Msps/105Msps ■ Single 3V Supply (2.85V to 3.4V) ■ Low Power: 395mW/320mW ■ 70.2dB SNR ■ 88dB SFDR ■ No Missing Codes ■ Flexible Input: 1VP-P to 2VP-P Range ■ 640MHz Full Power Bandwidth S/H ■ Clock Duty Cycle Stabilizer ■ Shutdown and Nap Modes ■ Pin Compatible Family 125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit) 105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit) 80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit) 65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit) 40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit) 25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit) 10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit) ■ 32-Pin (5mm × 5mm) QFN Package 12-Bit, 125/105Msps Low Power 3V ADCs The LTC ®2253/LTC2252 are 12-bit 125Msps/105Msps, low power 3V A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2253/ LTC2252 are perfect for demanding imaging and commu- nications applications with AC performance that includes 70.1dB SNR and 85dB SFDR for signals at the Nyquist frequency. DC specs include ±0.3LSB INL (typ), ±0.15LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 0.32LSBRMS. A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.3V logic. A single-ended CLK input controls converter operation. An optional clock duty cycle stabilizer allows high perfor- mance at full speed for a wide range of clock duty cycles. ■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation LTC2253: SNR vs Input Frequency, –1dB, 2V Range, 125Msps – + INPUT S/H CORRECTION LOGIC OUTPUT DRIVERS 12-BIT PIPELINED ADC CORE CLOCK/DUTY CYCLE CONTROL FLEXIBLE REFERENCE D11 • • • D0 CLK REFH REFL ANALOG INPUT 22532 TA01 OVDD OGND INPUT FREQUENCY (MHz) 0 72 150 22532 G09 69 67 50 100 200 66 65 73 71 70 68 250 300 350 , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. |
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