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LTC6404 数据表(PDF) 3 Page - Linear Technology |
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LTC6404 数据表(HTML) 3 Page - Linear Technology |
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3 / 28 page  LTC6404 3 6404f The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. V+ = 3V, V– = 0V, VCM = VOCM = VICM = Mid-Supply, VSHDN = OPEN, RL = OPEN, RBAL = 100k (See Figure 1). For the LTC6404-1: RI = 100Ω, RF = 100Ω. For the LTC6404-2: RI = 100Ω, RF = 200Ω. For the LTC6404-4: RI = 100Ω, RF = 402Ω, unless otherwise noted. VS is defined (V+ – V–). VOUTCM = (VOUT+ + VOUT–)/2. VICM is defined (VIN+ + VIN–)/2. VOUTDIFF is defined (VOUT+ – VOUT–). VINDIFF = (VINP – VINM) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOSDIFF Differential Offset Voltage (Input Referred) VS = 2.7V to 5.25V l ±0.5 ±2 mV ΔVOSDIFF/ΔT Differential Offset Voltage Drift (Input Referred) VS = 2.7V to 5.25V 1 μV/°C IB Input Bias Current (Note 6) VS = 2.7V to 5.25V l –60 –23 0 μA ΔIB/ΔT Input Bias Current Drift (Note 6) VS = 2.7V to 5.25V 0.01 μA/°C IOS Input Offset Current (Note 6) VS = 2.7V to 5.25V l ±1 ±10 μA RIN Input Resistance Common Mode Differential Mode 1000 3 kΩ kΩ CIN Input Capacitance 1pF en Differential Input Referred Noise Voltage Density f = 1MHz 1.5 nV/√Hz in Input Noise Current Density f = 1MHz 3 pA/√Hz enVOCM Input Referred Common Mode Noise Voltage Density f = 1MHz, Referred to VOCM Pin LTC6404-1 LTC6404-2 LTC6404-4 9 10.5 27 nV/√Hz nV/√Hz nV/√Hz VICMR (Note 7) Input Signal Common Mode Range VS = 3V VS = 5V l l 0 0 1.6 3.6 V V CMRRI (Note 8) Input Common Mode Rejection Ratio (Input Referred) ΔVICM/ΔVOSDIFF VS = 3V, ΔVCM = 0.75V VS = 5V, ΔVCM = 1.25V 60 60 dB dB CMRRIO (Note 8) Output Common Mode Rejection Ratio (Input Referred) ΔVOCM/ΔVOSDIFF VS = 5V, ΔVOCM = 1V 66 dB PSRR (Note 9) Differential Power Supply Rejection ( ΔVS/ΔVOSDIFF) VS = 2.7V to 5.25V l 60 94 dB PSRRCM (Note 9) Output Common Mode Power Supply Rejection ( ΔVS/ΔVOSCM) VS = 2.7V to 5.25V LTC6404-1 LTC6404-2 LTC6404-4 l l l 50 50 40 63 63 51 dB dB dB GCM Common Mode Gain ( ΔVOUTCM/ΔVOCM)VS = 5V, ΔVOCM = 1V LTC6404-1 LTC6404-2 LTC6404-4 l l l 1 1 0.99 V/V V/V V/V Common Mode Gain Error VS = 5V, ΔVOCM = 1V LTC6404-1 LTC6404-2 LTC6404-4 l l l –0.6 –0.6 –1.6 –0.125 –0.25 –1 0.1 0.1 –0.4 % % % BAL Output Balance ( ΔVOUTCM/ΔVOUTDIFF) ΔVOUTDIFF = 2V, Single-Ended Input LTC6404-1 LTC6404-2 LTC6404-4 l l l –60 –60 –53 –40 –40 –40 dB dB dB ΔVOUTDIFF = 2V, Differential Input LTC6404-1 LTC6404-2 LTC6404-4 l l l –66 –66 –66 –40 –40 –40 dB dB dB VOSCM Common Mode Offset Voltage (VOUTCM – VOCM)VS = 2.7V to 5.25V LTC6404-1 LTC6404-2 LTC6404-4 l l l ±10 ±20 ±40 ±25 ±50 ±100 mV mV mV LTC6404 DC ELECTRICAL CHARACTERISTICS |
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