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OPAX388 Datasheet(PDF) 6 Page - Texas Instruments |
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OPAX388 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 34 page 6 OPA388, OPA2388, OPA4388 SBOS777 – DECEMBER 2016 www.ti.com Product Folder Links: OPA388 OPA2388 OPA4388 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated 6.5 Electrical Characteristics: VS = ±1.25 V to ±2.75 V (VS = 2.5 to 5.5 V) at TA = 25°C, VCM = VOUT = VS / 2, and RLOAD = 10 kΩ connected to VS / 2 (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT OFFSET VOLTAGE VOS Input offset voltage ±0.25 ±5 µV TA = –40°C to +125°C ±7.5 dVOS/dT Input offset voltage drift TA = –40°C to +125°C ±0.005 ±0.05 µV/°C PSRR Power-supply rejection ratio TA = –40°C to +125°C ±0.1 ±1 µV/V INPUT BIAS CURRENT IB Input bias current RIN = 100 kΩ ±30 ±350 pA TA = 0°C to +85°C ±400 pA TA = –40°C to +125°C ±700 IOS Input offset current ±60 ±700 TA = 0°C to +85°C ±800 TA = –40°C to +125°C ±800 NOISE EN Input voltage noise f = 0.1 Hz to 10 Hz 0.14 µVPP eN Input voltage noise density f = 10 Hz 7 nV/ √Hz f = 100 Hz 7 f = 1 kHz 7 f = 10 kHz 7 IN Input current noise density f = 1 kHz 100 fA/rtHz INPUT VOLTAGE VCM Common-mode voltage range (V–) – 0.1 (V+) + 0.1 V CMRR Common-mode rejection ratio (V–) – 0.1 V < VCM < (V+) + 0.1 V VS = ±1.25 V 124 138 dB VS = ±2.75 V 124 140 (V–) < VCM < (V+) + 0.1 V, TA = –40°C to +125°C VS = ±1.25 V 114 134 (V–) – 0.05 V < VCM < (V+) + 0.1 V, TA = –40°C to +125°C VS = ±2.75 V 124 140 INPUT IMPEDANCE zid Differential input impedance 100 || 2 MΩ || pF zic Common-mode input impedance 60 || 4.5 TΩ || pF OPEN-LOOP GAIN AOL Open-loop voltage gain (V–) + 0.1 V < VO < (V+) – 0.1 V, RLOAD = 10 kΩ 126 148 dB (V–) + 0.1 V < VO < (V+) – 0.1 V, RLOAD = 10 kΩ, TA = –40°C to +125°C 120 126 (V–) + 0.2 V < VO < (V+) – 0.2 V, RLOAD = 2 kΩ 126 148 (V–) + 0.25 V < VO < (V+) – 0.25 V, RLOAD = 2 kΩ, TA = –40°C to +125°C 120 126 FREQUENCY RESPONSE GBW Unity-gain bandwidth 10 MHz SR Slew rate G = +1, 4-V step 5 V/µs THD+N Total harmonic distortion + noise G = 1, f = 1 kHz, VO = 1 VRMS 0.0005% tS Settling time To 0.1% VS = ±2.5 V, G = +1, 1-V step 0.75 µs To 0.01% VS = ±2.5 V, G = +1, 1-V step 2 tOR Overload recovery time VIN × G = VS 10 µs |
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