Datasheet LTC2273, LTC2272 (Analog Devices) - 5

LTC2273/LTC2272
COMMON MODE BIAS CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
VCM Output Voltage IOUT = 0 1.15 1.25 1.35 V VCM Output Tempco IOUT = 0 l 40 ppm/°C VCM Line Regulation 3.135V ≤ VDD ≤ 3.465V l 1 mV/V VCM Output Resistance –1mA ≤ | IOUT | ≤ 1mA l 2 Ω
The DIGITAL INPUTS AND DIGITAL OUTPUTS
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Encode Inputs (ENC+, ENC–)
VID Differential Input Voltage (Note 7) l 0.2 V VICM Common Mode Input Voltage Internally Set 1.6 V Externally Set (Note 7) 1.4 3.0 RIN Input Resistance (See Figure 2) 6 kΩ CIN Input Capacitance 3 pF
SYNC Inputs (SYNC
+
, SYNC
–
)
VSID SYNC Differential Input (Note 7) l 0.2 V Voltage VSICM SYNC Common Mode Input Internally Set 1.6 V Voltage Externally Set (Note 7) 1.1 2.2 RSIN SYNC Input Resistance 16.5 kΩ CSIN SYNC Input Capacitance 3 pF
Logic Inputs (DITH, PGA, MSBINV, SCRAM, FAM, SHDN, SRR1, SRR0, ISMODE, PAT1, PAT0)
VIH High Level Input Voltage VDD = 3.3V l 2 V VIL Low Level Input Voltage VDD = 3.3V l 0.8 V IIN Input Current VIN = 0V to VDD l ±20 μA CIN Input Capacitance 1.5 pF
High-Speed Serial Outputs (CMLOUT+, CMLOUT–)
VOH Output High Level Directly-Coupled 50Ω to OVDD OVDD V Directly-Coupled 100Ω Differential OVDD – 0.2 V AC-Coupled OVDD – 0.2 V VOL Output Low Level Directly-Coupled 50Ω to OVDD OVDD – 0.4 V Directly-Coupled 100Ω Differential OVDD – 0.6 V AC-Coupled OVDD – 0.6 V VOCM Output Common Mode Directly-Coupled 50Ω to OVDD OVDD – 0.2 V Voltage Directly-Coupled 100Ω Differential OVDD – 0.4 V AC-Coupled OVDD – 0.4 V ROUT Output Resistance Single-Ended Differential l 35 50 65 Ω 100 Ω 22732fa 5