Datasheet LTC2270 (Analog Devices) - 5

LTC2270
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 MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 1.4MHz Input 84.1 dBFS 5MHz Input l 82.3 84.1 dBFS 30MHz Input 83.8 dBFS 70MHz Input 82.7 dBFS SFDR Spurious Free Dynamic Range, 2nd Harmonic 1.4MHz Input 99 dBFS 5MHz Input l 90 98 dBFS 30MHz Input 98 dBFS 70MHz Input 90 dBFS Spurious Free Dynamic Range, 3rd Harmonic 1.4MHz Input 99 dBFS 5MHz Input l 92 98 dBFS 30MHz Input 98 dBFS 70MHz Input 96 dBFS Spurious Free Dynamic Range, 4th Harmonic or Higher 1.4MHz Input 110 dBFS 5MHz Input l 95 110 dBFS 30MHz Input 105 dBFS 70MHz Input 100 dBFS S/(N+D) Signal-to-Noise Plus Distortion Ratio 1.4MHz Input 83.9 dBFS 5MHz Input l 81.9 83.9 dBFS 30MHz Input 83.7 dBFS 70MHz Input 82.0 dBFS Crosstalk 10MHz Input –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 l 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 l 1.230 1.250 1.270 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 2270f 5