| | | LOG102AID | |
| PARAMETER | CONDITION | MIN | TYP | MAX | UNITS |
| CORE LOG FUNCTION IIN /VLOC ou r Equation | | | Vo = log (11/12) | | |
| LOG CONFORMITY ERROR{i) Initial over Temperature GAIN(2) Initial Value Gain Error vs Temperature | 1nA t0 100ccA (5 decades) 1nA t0 1mA (6 decades) 1nA t0 100cd\ (5 decades) 1nA t0 1mA (6 decades) 1nA t0 100ccA (5 decades) 1nA t0 100ccA (5 decades) TMIN to TMAX | | 0.04 0.15 0.0002 0.002 1 0.15 0.025 | +0.3 +1 0.05 | % % %/YC %/IC V/decade % %/YC |
| INPUT, A1 and A2 Offset Voltage vs Temperature vs Power Supply (PSRR) Input Bias Current vs Temperature Voltage Noise Current Noise Common-Mode Voltage Range (Positive) (Negative) CMRR | TMIN to TMAX Vq = +4.5V to +18V TMIN to TMAX f = 10Hz t0 10kHz f = 1kHz f = 1kHz | Do 90 | +0.3 +7 5 +5 ubles Every ll 3 30 4 105 | +1 5 50 IYC | mV ~vnc ccVN pA ~Vrms nV/1z fA/1z V V dB |
| OUTPUT, A2 (VLOGOUr) Output Offset, Voso, Initial vs Temperature Full-Scale Output (FSO) Short-Circuit Current | TMIN to TMAX Vs = +5V Supplies | V+1 2 | +3 +18 | +55 25 | mV o1 V mA |
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| PARAMETER Collector-Base Voltage | SYMBOL VCBO | VALUE 250 | UNIT V |
| Collector-Emitter Voltage | VCEO | 150 | V |
| Emitter-Base Voltage | VEBO | 6 | V |
| Peak Pulse Current | ICM | 10 | A |
| Continuous Collector Current | lc | 4 | A |
| Practical Power Dissipation' | Ptotp | 1.58 | W |
| Power Dissipation at Tamb-250C | Ptot | 1.2 | W |
| Operating and Storage Temperature Range | Tj:Tstg | -55 to +200 | ac |
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The output capacitor's ESR, combined with the inductor ripple current, is typically the main contributor to output voltage ripple. The maxi- mum allowable ESR required to maintain a specified output voltage ripple can be calculated by: RESR < AVOUT
