Datasheet LTC2240-12 (Analog Devices) - 4

LTC2240-12
INTERNAL REFERENCE CHARACTERISTICS (Note 4) PARAMETER CONDITIONS MIN TYP MAX UNITS
VCM Output Voltage IOUT = 0 1.225 1.25 1.275 V VCM Output Tempco ±35 ppm/°C VCM Line Regulation 2.375V < VDD < 2.625V 3 mV/V VCM Output Resistance –1mA < IOUT < 1mA 2 Ω
DIGITAL INPUTS AND DIGITAL OUTPUTS The
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 l 1.5 V Externally Set (Note 7) 1.2 1.5 2.0 V RIN Input Resistance 4.8 kΩ CIN Input Capacitance (Note 7) 2 pF
LOGIC INPUTS (OE, SHDN)
VIH High Level Input Voltage VDD = 2.5V l 1.7 V VIL Low Level Input Voltage VDD = 2.5V l 0.7 V IIN Input Current VIN = 0V to VDD l –10 10 μA CIN Input Capacitance (Note 7) 3 pF
LOGIC OUTPUTS (CMOS MODE) OVDD = 2.5V
COZ Hi-Z Output Capacitance OE = High (Note 7) 3 pF ISOURCE Output Source Current VOUT = 0V 37 mA ISINK Output Sink Current VOUT = 2.5V 23 mA VOH High Level Output Voltage IO = –10μA 2.495 V IO = –500μA 2.45 V VOL Low Level Output Voltage 0.005 V 0.07 V
OVDD = 1.8V
VOH High Level Output Voltage IO = –500μA 1.75 V VOL Low Level Output Voltage IO = 500μA 0.07 V 224012fd 4 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION CONVERTER CHARACTERISTICS ANALOG INPUT DYNAMIC ACCURACY INTERNAL REFERENCE CHARACTERISTICS DIGITAL INPUTS AND DIGITAL OUTPUTS POWER REQUIREMENTS TIMING CHARACTERISTICS ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS FUNCTIONAL BLOCK DIAGRAM TIMING DIAGRAMS APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY RELATED PARTS