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LTC2144-14 Datasheet(PDF) 5 Page - Linear Technology |
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LTC2144-14 Datasheet(HTML) 5 Page - Linear Technology |
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5 / 36 page  5 21454312p LTC2145-12/ LTC2144-12/LTC2143-12 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 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 LTC2145-12 LTC2144-12 LTC2143-12 UNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX SNR Signal-to-Noise Ratio 5MHz Input 70MHz Input 140MHz Input l TBD 70.6 70.5 70.3 TBD 70.5 70.4 70.2 TBD 70.8 70.7 70.5 dBFS dBFS dBFS SFDR Spurious Free Dynamic Range 2nd or 3rd Harmonic 5MHz Input 70MHz Input 140MHz Input l TBD 89 88 84 TBD 89 88 84 TBD 89 88 84 dBFS dBFS dBFS Spurious Free Dynamic Range 4th Harmonic or Higher 5MHz Input 70MHz Input 140MHz Input l TBD 95 95 95 TBD 95 95 95 TBD 95 95 95 dBFS dBFS dBFS S/(N+D) Signal-to-Noise Plus Distortion Ratio 5MHz Input 70MHz Input 140MHz Input l TBD 70.5 70.4 70 TBD 70.4 70.3 69.9 TBD 70.7 70.6 70.2 dBFS dBFS dBFS Crosstalk 10MHz Input –110 –110 –110 dBc |
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