Datasheet AD640 (Analog Devices) - 6

Typical DC Performance Characteristics–AD640 1.015 1.20 1.006 1.010 1.15 1.004 1.005 1.10 1.002 1 1.05 1.000 0.995 1.00 0.998 0.990 INTERCEPT – mV 0.95 SLOPE CURRENT – mA SLOPE CURRENT – mA 0.996 0.985 0.90 0.980 0.85 0.994 –60 –40 –20 0 20 40 60 80 100 120 140 –60 –40 –20 0 20 40 60 80 100 120 140 4.5 5.0 5.5 6.0 6.5 7.0 7.5 TEMPERATURE –
8
C TEMPERATURE –
8
C POWER SUPPLY VOLTAGES –
6
Volts
Figure 1. Slope Current, I Figure 2. Intercept Voltage, V Figure 3. Slope Current, I Y vs. X, vs. Y vs. Temperature Temperature Supply Voltages
1.015 14 +0.4 13 1.010 +0.3 INPUT OFFSET VOLTAGE 12 +0.2 DEVIATION WILL BE WITHIN 1.005 SHADED AREA. 11 +0.1 1.000 10 0 0.995 INTERCEPT – mV 9 –0.1 INTERCEPT VOLTAGE – mV 0.990 8 –0.2 0.985 7 –0.3 4.5 5.0 5.5 6.0 6.5 7.0 7.5 –60 –40 –20 0 20 40 60 80 100 120 140 –60 –40 –20 0 20 40 60 80 100 120 140 DEVIATION OF INPUT OFFSET VOLTAGE – mV POWER SUPPLY VOLTAGES –
6
Volts TEMPERATURE –
8
C TEMPERATURE –
8
C
Figure 4. Intercept Voltage, VX, vs. Figure 5. Intercept Voltage (Using Figure 6. Input Offset Voltage Supply Voltages Attenuator) vs. Temperature Deviation vs. Temperature
2 2.5 2.5 2.4 1 2.2 0 2.0 2.0 2.0 1.8 ERROR – dB 1.6 1.4 1.5 1.5 1.2 1.0 0.8 1.0 1.0 0.6 0.4 0.2 OUTPUT CURRENT – mA ABSOLUTE ERROR – dB 0.5 ABSOLUTE ERROR – dB 0.5 0 –0.2 –0.4 0 0 0.1 1.0 10.0 100.0 1000.0 –60 –40 –20 0 20 40 60 80 100 120 140 –60 –40 –20 0 20 40 60 80 100 120 140 INPUT VOLTAGE – mV TEMPERATURE –
8
C TEMPERATURE –
8
C (EITHER SIGN)
Figure 7. DC Logarithmic Transfer Figure 8. Absolute Error vs. Tem- Figure 9. Absolute Error vs. Function and Error Curve for Single perature, VIN = ⴞ1 mV to ⴞ100 mV Temperature, Using Attenuator. AD640 VIN = ⴞ10 mV to ⴞ1 V, Pin 8 Grounded to Disable ITC Bias REV. D –5– Document Outline AD640-SPECIFICATIONS DC Specifications AC Specifications Thermal Characteristics ABSOLUTE MAXIMUM RATINGS TYPICAL DC PERFORMANCE CHARACTERISTICS TYPICAL AC PERFORMANCE CHARACTERISTICS OUTLINE DIMENSIONS ORDERING GUIDE