Datasheet LTC6421-20 (Analog Devices) - 3

LTC6421-20
DC ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. V+ = 3V, V– = 0V, +IN = –IN = VOCM = 1.25V, ENABLE = 0V, No RL unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Input/Output Characteristic
GDIFF Gain VIN = ±100mV Differential l 19.6 20 20.4 dB ΔG Gain Matching Channel-to-Channel l ±0.1 ±0.25 dB TCGAIN Gain Temperature Drift VIN = ±100mV Differential l 0.0015 dB/°C VSWINGMIN Output Swing Low (VOCM = 1.5V) Each Output, VIN = ±400mV Differential l 0.1 0.25 V VSWINGMAX Output Swing High (VOCM = 1.5V) Each Output, VIN = ±400mV Differential l 2.75 2.9 V VOUTDIFFMAX Maximum Differential Output Swing l 5 5.6 VP-P IOUT Output Current Drive 2VP-P, OUT (Note 10) l 10 mA VOS Input Offset Voltage Differential l –2 ±0.4 2 mV TCVOS Input Offset Voltage Drift Differential l 1.4 μV/°C IVRMIN Input Common Mode Voltage Range, MIN l 1 V IVRMAX Input Common Mode Voltage Range, MAX l 1.6 V RINDIFF Input Resistance (+IN, –IN) Differential l 170 200 230 Ω ΔRIN Input Impedance Matching Channel-to-Channel l ±1 ±2.5 % CINDIFF Input Capacitance (+IN, –IN) Differential, Includes Parasitic 1 pF ROUTDIFF Output Resistance (+OUT, –OUT) Differential l 20 25 36 Ω CMRR Common Mode Rejection Ratio Input Common Mode Voltage 1V to 1.6V l 45 68 dB
Output Common Mode Voltage Control
GCM Common Mode Gain VOCM = 1V to 1.6V 1 V/V VOCMMIN Output Common Mode Range, MIN l 1 V VOCMMAX Output Common Mode Range, MAX l 1.6 V VOSCM Common Mode Offset Voltage VOCM = 1.25V to 1.5V l –10 ±2 10 mV TCVOSCM Common Mode Offset Voltage Drift l 6 μV/°C IVOCM VOCM Input Current l –15 –3 0 μA
ENABLE
x
Pins (x = A, B)
VIL ENABLEx Input Low Voltage l 0.8 V VIH ENABLEx Input High Voltage l 2.4 V ENABLEx Input Current ENABLEx ≤ 0.8V l ±0.5 μA ENABLEx ≥ 2.4V l 1.5 3 μA
Power Supply
VS Operating Supply Range l 2.85 3 3.5 V IS Supply Current ENABLEx ≤ 0.8V; per Amplifi er l 40 50 mA ISHDN Shutdown Supply Current ENABLEx ≥ 2.4V; per Amplifi er, l 1 3 mA Inputs Floating PSRR Power Supply Rejection Ratio (Differential V+ = 2.85V to 3.5V l 55 86 dB Outputs) 642120fb 3 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION SELECTOR GUIDE DC ELECTRICAL CHARACTERISTICS AC ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS