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LTC2268IUJ-14 Datasheet(PDF) 4 Page - Linear Technology |
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LTC2268IUJ-14 Datasheet(HTML) 4 Page - Linear Technology |
4 / 32 page LTC2268-14/ LTC2267-14/LTC2266-14 4 22687614p DIGITAL 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 LTC2268-14 LTC2267-14 LTC2266-14 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 dBFS dBFS dBFS 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 dBFS dBFS dBFS 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 dBFS dBFS dBFS 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 dBFS dBFS dBFS Crosstalk 10MHz Input –105 –105 –105 dBc PARAMETER CONDITIONS MIN TYP MAX UNITS VCM Output Voltage IOUT = 0 0.5 • VDD – 25mV 0.5 • VDD 0.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 1.25 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 INTERNAL REFERENCE CHARACTERISTICS 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 MIN TYP MAX UNITS ENCODE INPUTS (ENC+, ENC–) DIFFERENTIAL ENCODE MODE (ENC– NOT TIED TO GND) VID Differential Input Voltage (Note 8) l 0.2 V VICM Common Mode Input Voltage Internally Set Externally Set (Note 8) l 1.1 1.2 1.6 V V VIN Input Voltage Range ENC+, ENC– to GND l 0.2 3.6 V RIN Input Resistance (See Figure 10) 10 kΩ CIN Input Capacitance 3.5 pF SINGLE-ENDED ENCODE MODE (ENC– TIED TO GND) VIH High Level Input Voltage VDD =1.8V l 1.2 V VIL Low Level Input Voltage VDD =1.8V l 0.6 V VIN Input Voltage Range ENC+ to GND l 0 3.6 V RIN Input Resistance (See Figure 11) 30 kΩ CIN Input Capacitance 3.5 pF DIGITAL INPUTS AND OUTPUTS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) |
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