Datasheet LTC2145-14, LTC2144-14, LTC2143-14 (Analog Devices) - 5

LTC2145-14/ LTC2144-14/LTC2143-14
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) LTC2145-14 LTC2144-14 LTC2143-14 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 73.1 72.9 73.4 dBFS 70MHz Input l 71.4 73 71.2 72.8 71.7 73.3 dBFS 140MHz Input 72.6 72.4 72.9 dBFS SFDR Spurious Free Dynamic Range 5MHz Input 90 90 90 dBFS 2nd Harmonic 70MHz Input l 76 89 77 89 78 89 dBFS 140MHz Input 84 84 84 dBFS Spurious Free Dynamic Range 5MHz Input 90 90 90 dBFS 3rd Harmonic 70MHz Input l 79 89 79 89 81 89 dBFS 140MHz Input 84 84 84 dBFS Spurious Free Dynamic Range 5MHz Input 95 95 95 dBFS 4th Harmonic or Higher 70MHz Input l 86 95 86 95 86 95 dBFS 140MHz Input 95 95 95 dBFS S/(N+D) Signal-to-Noise Plus 5MHz Input 73 72.8 73.2 dBFS Distortion Ratio 70MHz Input l 70.8 72.8 70.8 72.6 71.4 73.1 dBFS 140MHz Input 72.2 72 72.4 dBFS Crosstalk 10MHz Input –110 –110 –110 dBc
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 21454314fa 5