Datasheet LTC2268-12, LTC2267-12, LTC2266-12 (Analog Devices) - 4

LTC2268-12/ LTC2267-12/LTC2266-12
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) LTC2268-12 LTC2267-12 LTC2266-12 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 70.6 70.6 70.6 dBFS 70MHz Input l 69.6 70.6 69.2 70.5 69.4 70.5 dBFS 140MHz Input 70.3 70.3 70.3 dBFS SFDR Spurious Free Dynamic Range 5MHz Input 88 88 88 dBFS 2nd or 3rd Harmonic 70MHz Input l 75 85 76 85 76 85 dBFS 140MHz Input 82 82 82 dBFS Spurious Free Dynamic Range 5MHz Input 90 90 90 dBFS 4th Harmonic or Higher 70MHz Input l 84 90 82 90 84 90 dBFS 140MHz Input 90 90 90 dBFS S/(N+D) Signal-to-Noise Plus Distortion 5MHz Input 70.6 70.6 70.4 dBFS Ratio 70MHz Input l 69 70.4 68.8 70.4 69 70.3 dBFS 140MHz Input 70 70 69.9 dBFS Crosstalk 10MHz Input –105 –105 –105 dBc
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) 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
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) 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 1.2 V Externally Set (Note 8) l 1.1 1.6 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 22687612fa 4 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Converter Characteristics Analog Input Digital Accuracy Internal Reference Characteristics Digital Inputs and Outputs Power Requirements Timing Characteristics Electrical Characteristics Timing Diagrams Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Related Parts