Datasheet LTC6404 (Analog Devices) - 3

LTC6404
LTC6404 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, 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, R + – F = 200Ω. For the LTC6404-4: RI = 100Ω, RF = 402Ω, unless otherwise noted. VS is defi ned (V+ – V–). VOUTCM = (VOUT + VOUT )/2. V + – + – ICM is defi ned (VIN + VIN )/2. VOUTDIFF is defi ned (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 1000 kΩ Differential Mode 3 kΩ CIN Input Capacitance 1 pF 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 f = 1MHz, Referred to VOCM Pin Density LTC6404-1 9 nV/√Hz LTC6404-2 10.5 nV/√Hz LTC6404-4 27 nV/√Hz VICMR Input Signal Common Mode Range VS = 3V l 0 1.6 V (Note 7) VS = 5V l 0 3.6 V CMRRI Input Common Mode Rejection Ratio VS = 3V, ΔVCM = 0.75V 60 dB (Note 8) (Input Referred) ΔVICM/ΔVOSDIFF VS = 5V, ΔVCM = 1.25V 60 dB CMRRIO Output Common Mode Rejection Ratio VS = 5V, ΔVOCM = 1V 66 dB (Note 8) (Input Referred) ΔVOCM/ΔVOSDIFF PSRR Differential Power Supply Rejection VS = 2.7V to 5.25V l 60 94 dB (Note 9) (ΔVS/ΔVOSDIFF) PSRRCM Output Common Mode Power Supply Rejection VS = 2.7V to 5.25V (Note 9) (ΔVS/ΔVOSCM) LTC6404-1 l 50 63 dB LTC6404-2 l 50 63 dB LTC6404-4 l 40 51 dB GCM Common Mode Gain (ΔVOUTCM/ΔVOCM) VS = 5V, ΔVOCM = 1V LTC6404-1 l 1 V/V LTC6404-2 l 1 V/V LTC6404-4 l 0.99 V/V Common Mode Gain Error VS = 5V, ΔVOCM = 1V LTC6404-1 l –0.6 –0.125 0.1 % LTC6404-2 l –0.6 –0.25 0.1 % LTC6404-4 l –1.6 –1 –0.4 % BAL Output Balance (ΔVOUTCM/ΔVOUTDIFF) ΔVOUTDIFF = 2V, Single-Ended Input LTC6404-1 l –60 –40 dB LTC6404-2 l –60 –40 dB LTC6404-4 l –53 –40 dB ΔVOUTDIFF = 2V, Differential Input LTC6404-1 l –66 –40 dB LTC6404-2 l –66 –40 dB LTC6404-4 l –66 –40 dB VOSCM Common Mode Offset Voltage (VOUTCM – VOCM) VS = 2.7V to 5.25V LTC6404-1 l ±10 ±25 mV LTC6404-2 l ±20 ±50 mV LTC6404-4 l ±40 ±100 mV 6404f 3