Datasheet LTC2255, LTC2254 (Analog Devices) - 3

LTC2255/LTC2254
U U A ALOG I PUT The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V + – IN Analog Input Range (AIN –AIN ) 2.85V < VDD < 3.4V (Note 7) ● ±0.5V to ±1V V VIN,CM Analog Input Common Mode Differential Input (Note 7) ● 1 1.5 1.9 V I + – IN Analog Input Leakage Current 0V < AIN , AIN < VDD ● –1 1 µA ISENSE SENSE Input Leakage 0V < SENSE < 1V ● –3 3 µA IMODE MODE Pin Leakage ● –3 3 µA tAP Sample-and-Hold Acquisition Delay Time 0 ns tJITTER Sample-and-Hold Acquisition Delay Time Jitter 0.2 psRMS CMRR Analog Input Common Mode Rejection Ratio 80 dB Full Power Bandwidth Figure 8 Test Circuit 640 MHz
U W DY A IC ACCURACY The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. AIN = –1dBFS. (Note 4) LTC2255 LTC2254 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 72.4 72.5 dB 30MHz Input 72.3 72.4 dB 70MHz Input ● 68.9 72.1 69.4 72.3 dB 140MHz Input 71.7 71.7 dB SFDR Spurious Free Dynamic Range 5MHz Input 88 88 dB 2nd or 3rd Harmonic 30MHz Input 85 88 dB 70MHz Input ● 73 82 71 84 dB 140MHz Input 78 80 dB SFDR Spurious Free Dynamic Range 5MHz Input 90 90 dB 4th Harmonic or Higher 30MHz Input 90 90 dB 70MHz Input ● 77 90 79 90 dB 140MHz Input 90 90 dB S/(N+D) Signal-to-Noise Plus 5MHz Input 72.2 72.4 dB Distortion Ratio 30MHz Input 72 72.2 dB 70MHz Input ● 68 71.9 68.5 72 dB 140MHz Input 70.2 70.6 dB IMD Intermodulation fIN1 = 28.2MHz 85 85 dB Distortion fIN2 = 26.8MHz 22554fa 3