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LTC2261CUJ-14-PBF Datasheet(PDF) 4 Page - Linear Technology |
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LTC2261CUJ-14-PBF Datasheet(HTML) 4 Page - Linear Technology |
4 / 32 page LTC2261-14 LTC2260-14/LTC2259-14 4 226114f ANALOG INPUT The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Analog Input Range (AIN+ – AIN–) 1.7V < VDD < 1.9V l 1 to 2 VP-P VIN(CM) Analog Input Common Mode (AIN+ + AIN–)/2 Differential Analog Input (Note 8) l VCM – 100mV VCM VCM + 100mV V VSENSE External Voltage Reference Applied to SENSE External Reference Mode l 0.625 1.250 1.300 V IINCM Analog Input Common Mode Current Per Pin, 125Msps Per Pin, 105Msps Per Pin, 80Msps 155 130 100 μA μA μA IIN1 Analog Input Leakage Current 0 < AIN+, AIN– < VDD, No Encode l –1 1 μA IIN2 PAR/SER Input Leakage Current 0 < PAR/SER < VDD l –3 3 μA IIN3 SENSE Input Leakage Current 0.625 < SENSE < 1.3V l –6 6 μA tAP Sample-and-Hold Acquisition Delay Time 0 ns tJITTER Sample-and-Hold Acquisition Delay Jitter 0.17 psRMS CMRR Analog Input Common Mode Rejection Ratio 80 dB BW-3B Full-Power Bandwidth Figure 6 Test Circuit 800 MHz DYNAMIC ACCURACY The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 5) SYMBOL PARAMETER CONDITIONS LTC2261-14 LTC2260-14 LTC2259-14 UNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX SNR Signal-to-Noise Ratio 5MHz Input 70MHz Input 140MHz Input l 71.3 73.4 73.2 72.7 71.3 73.4 73.2 72.7 70.9 73.1 72.9 72.4 dB dB dB SFDR Spurious Free Dynamic Range 2nd or 3rd Harmonic 5MHz Input 70MHz Input 140MHz Input l 76 88 85 82 76 88 85 82 79 88 85 82 dB dB dB Spurious Free Dynamic Range 4th Harmonic or Higher 5MHz Input 70MHz Input 140MHz Input l 85 90 90 90 83 90 90 90 85 90 90 90 dB dB dB S/(N+D) Signal-to-Noise Plus Distortion Ratio 5MHz Input 70MHz Input 140MHz Input l 70.2 73 72.6 72 70.2 73 72.6 72 70.4 72.9 72.6 72 dB dB dB INTERNAL REFERENCE CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) PARAMETER CONDITIONS MIN TYP MAX UNITS VCM Output Voltage IOUT = 0 0.5 • VDD – 25mV 0.5 • VDD 0.5 • VDD + 25mV V VCM Output Temperature Drift ±25 ppm/°C VCM Output Resistance –600μA < IOUT < 1mA 4 Ω VREF Output Voltage IOUT = 0 1.225 1.250 1.275 V VREF Output Temperature Drift ±25 ppm/°C VREF Output Resistance –400μA < IOUT < 1mA 7 Ω VREF Line Regulation 1.7V < VDD < 1.9V 0.6 mV/V |
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