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LT1789-1 Datasheet(PDF) 3 Page - Linear Technology |
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LT1789-1 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 24 page  3 LT1789-1/LT1789-10 1789f VS = 3V, 0V; VS = 5V, 0V; RL = 20k, VCM = VREF = half supply, TA = 25°C, unless otherwise noted. 3V and 5V ELECTRICAL CHARACTERISTICS LT1789-1 LT1789-10 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Total RTI Noise = √eni2 + (eno/G)2 eni Input Noise Voltage Density, fO = 1kHz (Note 7) 48 85 52 90 nV/ √Hz RTI eno Output Noise Voltage Density, fO = 1kHz (Note 3) 330 270 nV/ √Hz RTI in Input Noise Current fO = 0.1Hz to 10Hz 16 16 pAP-P Input Noise Current Density fO = 1kHz 62 62 fA/ √Hz RIN Input Resistance VIN = 0V to (+VS) – 1V (Note 6) 0.75 1.6 0.75 1.6 G Ω CIN Input Capacitance Differential 1.6 1.6 pF Common Mode 1.6 1.6 pF VCM Input Voltage Range 0 +VS – 1 0 +VS – 1.2 V CMRR Common Mode Rejection Ratio 1k Source Imbalance, (Note 6) LT1789-1,VCM = 0V to (+VS)–1V LT1789-10, VCM = 0V to (+VS)–1.2V G = 1 79 88 dB G = 10 96 106 88 105 dB G = 100 100 114 98 113 dB G = 1000 100 114 98 113 dB PSRR Power Supply Rejection Ratio VS = 2.5V to 12.5V, VCM = VREF = 1V G = 1 90 100 dB G = 10 100 113 94 109 dB G = 100 102 116 102 120 dB G = 1000 102 116 102 120 dB Minimum Supply Voltage 2.2 2.5 2.2 2.5 V IS Supply Current (Note 7) 67 95 67 95 µA VOL Output Voltage Swing LOW (Note 7) 54 100 62 110 mV VOH Output Voltage Swing HIGH (Note 7) +VS – 0.3 +VS – 0.19 +VS – 0.3 +VS – 0.19 V ISC Short-Circuit Current Short to GND 2.2 2.2 mA Short to +VS 8.5 8.5 mA BW Bandwidth G = 1 60 kHz G = 10 30 25 kHz G = 100 3 12 kHz G = 1000 0.2 1.5 kHz SR Slew Rate G = 10, VOUT = 0.5V to 4.5V 0.023 0.062 V/ µs Settling Time to 0.01% 4V Step 240 190 µs RREFIN Reference Input Resistance 220 220 k Ω IREFIN Reference Input Current VREF = 0V 2.7 2.7 µA AVREF Reference Gain to Output 1 ±0.0001 1 ±0.0001 |
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