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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LOG114AIRGVT Datenblatt(PDF) 7 Page - Texas Instruments |
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LOG114AIRGVT Datenblatt(HTML) 7 Page - Texas Instruments |
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7 / 43 page  5.6 Electrical Characteristics (5V) All specifications at TA = 25°C, VS = 5V, VLOGOUT RL = 10kΩ, VCM = GND, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT CORE LOG FUNCTION Core log function IIN/VOUT Equation VO = (0.375) log (I1/I2)+VCM V LOG CONFORMITY ERROR Log conformity error(1) 1nA to 100µA (5 decades) 0.1 0.3 % 0.009 0.026 dB TA = -5℃ to 75℃ 0.1 0.4 % 100pA to 3.5mA (7.5 decades) 2.2 % 0.19 dB TA = -5℃ to 75℃ 2.3 % 1mA to 10mA See typical characteristics TA = -5℃ to 75℃ See typical characteristics TRANSFER FUNCTION (GAIN) Initial scaling factor 100pA to 10mA 0.375 V/decade Scaling factor error(2) 1nA to 100µA 0.4 ±2.5 % 0.035 0.21 dB TA = –5°C to 75°C 1.5 ±3.5 % TA = 15°C to 50°C 0.7 ±3 % INPUT, A1 and A2 VOS Offset voltage ±1 ±7 mV dVOS/dT Offset voltage vs temperature TA = -5℃ to 75℃ ±30 µV/ ℃ PSRR Offset voltage vs power supply VS = 4.5V to 5.5V 300 µV/V IB Input bias current ±5 pA TA = -5℃ to 75℃ Doubles every 10 ℃ VCM Input common-mode range (V–) + 1.5V (V+) – 1.5 V en Voltage noise f = 0.1Hz to 10kHz 3 µVrms f = 1kHz 30 nV/√Hz in Current noise f = 1kHz 4 fA/√Hz OUTPUT, A3 (VLOGOUT) VOSO Output offset voltage ±14 ±65 mV TA = -5℃ to 75℃ ±18 ±80 mV FSO Full-scale output(3) (V–) + 0.6 (V+) – 0.6 V GBW Gain bandwidth product IIN = 1µA 50 MHz ISC Short-circuit current ±18 mA Capacitive load 100 pF OP AMP, A4 and A5 VOS Input offset voltage ±250 ±4000 µV dVOS/dT Input offset voltage vs temperature TA = -5℃ to 75℃ ±2 µV/ ℃ PSRR Input offset voltage vs supply Vs = 4.8V to 5.5V 30 µV/V CMRR Input offset voltage vs common-mode voltage 70 dB IB Input bias current –1 µA IOS Input offset current ±0.05 µA Input voltage range (V–) (V+) – 1.5V V Input voltage noise f = 0.1Hz to 10kHz 1 µVpp f = 1kHz 28 nV/√Hz www.ti.com LOG114 SBOS301B – MAY 2004 – REVISED MARCH 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 7 Product Folder Links: LOG114 |
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