LTC2261-12 LTC2260-12/LTC2259-12 a nalog inpuT The l denotes the specifications which apply over the full operating temperature range, otherwisespecifications are at TA = 25°C. (Note 5)SYMBOL PARAMETERCONDITIONSMINTYPMAXUNITS V + – IN Analog Input Range (AIN – AIN ) 1.7V < VDD < 1.9V l 1 to 2 VP-P V + – IN(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 155 µA Per Pin, 105Msps 130 µA Per Pin, 80Msps 100 µA I + – IN1 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 0.625V < 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)LTC2261-12LTC2260-12LTC2259-12SYMBOL PARAMETERCONDITIONSMINTYPMAXMINTYPMAXMINTYPMAXUNITS SNR Signal-to-Noise Ratio 5MHz Input 70.8 70.8 70.6 dB 70MHz Input l 69.4 70.7 69.4 70.7 69.1 70.5 dB 140MHz Input 70.4 70.4 70.2 dB SFDR Spurious Free Dynamic Range 5MHz Input 88 88 88 dB 2nd or 3rd Harmonic 70MHz Input l 76 85 76 85 79 85 dB 140MHz Input 82 82 82 dB Spurious Free Dynamic Range 5MHz Input 90 90 90 dB 4th Harmonic or Higher 70MHz Input l 83 90 82 90 85 90 dB 140MHz Input 90 90 90 dB S/(N+D) Signal-to-Noise Plus 5MHz Input 70.6 70.6 70.4 dB Distortion Ratio 70MHz Input l 68.6 70.4 68.6 70.4 68.8 70.3 dB 140MHz Input 70 70 69.9 dB i nTernal reFerence characTerisTics The l denotes the specifications which apply over thefull operating temperature range, otherwise specifications are at TA = 25°C. (Note 5)PARAMETERCONDITIONSMINTYPMAXUNITS 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 226112fc 4 For more information www.linear.com/LTC2261-12 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configurations Order Information Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Digital Inputs and Outputs Power Requirements Timing Characteristics Timing Diagrams Typical Performance Characteristics Pin Functions Functional Block Diagram Applications Information Typical Applications Package Description Revision History Related Parts
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