Datasheet AD8305 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 100 dB-range (10nA-1mA) Logarithmic Converter |
| Pages / Page | 24 / 6 — AD8305. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 1.6. 2.0. A = … |
| Revision | C |
| File Format / Size | PDF / 567 Kb |
| Document Language | English |
AD8305. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 1.6. 2.0. A = –40°C, 0°C, +25°C, +70°C, +85°C. N = 0V. 1.4. 1.5. 1.2. 1.0. +85°C
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Text Version of Document
AD8305 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VP = 5 V, VN = 0 V, RREF = 200 kΩ, TA = 25°C, unless otherwise noted.
1.6 2.0 T T A = –40°C, 0°C, +25°C, +70°C, +85°C A = –40°C, 0°C, +25°C, +70°C, +85°C V V N = 0V N = 0V 1.4 1.5 1.2 1.0 +85°C B) /d +70°C 1.0 –40°C 0.5 +25°C +85°C 10mV (V) G 0.8 B ( 0 LO d V R; 0.6 O –0.5 R 0°C +25°C 0°C ER –40°C 0.4 +70°C –1.0 0.2 –1.5 0 –2.0 1n 10n 100n 1µ 10µ 100µ 1m 10m
003
1n 10n 100n 1µ 10µ 100µ 1m 10m
006
IPD (A) IPD (A)
03053- 03053- Figure 3. VLOG vs. IPD for Multiple Temperatures Figure 6. Law Conformance Error vs. IPD (at IREF = 10 µA) for Multiple Temperatures, Normalized to 25°C
1.8 2.0 T TA = –40°C, 0°C, +25°C, +70°C, +85°C –40°C A = –40°C, 0°C, +25°C, +70°C, +85°C V V 1.6 N = 0V N = 0V 1.5 1.4 1.0 B) 1.2 0°C +70°C +85°C +70°C /d 0.5 1.0 +25°C ( V) (10mV G +85°C B 0 LO d V 0.8 R; –0.5 0.6 RRO +25°C E –1.0 0°C 0.4 0.2 –1.5 –40°C 0 –2.0 1n 10n 100n 1µ 10µ 100µ 1m 10m
004
1n 10n 100n 1µ 10µ 100µ 1m 10m
007
IREF (A) IPD (A)
03053- 03053- Figure 4. V Figure 7. Law Conformance Error vs. I LOG vs. IREF for Multiple Temperatures REF (at IPD = 10 µA) for Multiple Temperatures, Normalized to 25°C
1.8 0.5 0.4 1.6 0.3 1.4 10µA 100µA 1mA B) 0.2 1.2 /d 0.1 1.0 10mV (V) 10nA G B ( 0 LO 0.8 100nA d V R; –0.1 1µA 1µA O R 0.6 10µA ER –0.2 10nA 100nA 0.4 100µA –0.3 1mA 0.2 –0.4 0 –0.5
008
1n 10n 100n 1µ 10µ 100µ 1m 10m
005
1n 10n 100n 1µ 10µ 100µ 1m 10m I IPD (A) PD (A)
03053- 03053- Figure 5. VLOG vs. IPD for Multiple Values of IREF (Decade Steps from 10 nA to 1 mA) Figure 8. Law Conformance Error vs. IPD for Multiple Values of IREF (Decade Steps from 10 nA to 1 mA) Rev. C | Page 6 of 24 Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics General Structure Theory Managing Intercept and Slope Response Time and Noise Considerations Power Supply Sequencing Applications Information Calibration Using a Negative Supply Log-Ratio Applications Reversing The Input Polarity Characterization Methods Evaluation Board Outline Dimensions Ordering Guide
VP = 5 V, VN = 0 V, RREF = 200 kΩ, TA = 25°C, unless otherwise noted.
1.6 2.0 T T A = –40°C, 0°C, +25°C, +70°C, +85°C A = –40°C, 0°C, +25°C, +70°C, +85°C V V N = 0V N = 0V 1.4 1.5 1.2 1.0 +85°C B) /d +70°C 1.0 –40°C 0.5 +25°C +85°C 10mV (V) G 0.8 B ( 0 LO d V R; 0.6 O –0.5 R 0°C +25°C 0°C ER –40°C 0.4 +70°C –1.0 0.2 –1.5 0 –2.0 1n 10n 100n 1µ 10µ 100µ 1m 10m
003
1n 10n 100n 1µ 10µ 100µ 1m 10m
006
IPD (A) IPD (A)
03053- 03053- Figure 3. VLOG vs. IPD for Multiple Temperatures Figure 6. Law Conformance Error vs. IPD (at IREF = 10 µA) for Multiple Temperatures, Normalized to 25°C
1.8 2.0 T TA = –40°C, 0°C, +25°C, +70°C, +85°C –40°C A = –40°C, 0°C, +25°C, +70°C, +85°C V V 1.6 N = 0V N = 0V 1.5 1.4 1.0 B) 1.2 0°C +70°C +85°C +70°C /d 0.5 1.0 +25°C ( V) (10mV G +85°C B 0 LO d V 0.8 R; –0.5 0.6 RRO +25°C E –1.0 0°C 0.4 0.2 –1.5 –40°C 0 –2.0 1n 10n 100n 1µ 10µ 100µ 1m 10m
004
1n 10n 100n 1µ 10µ 100µ 1m 10m
007
IREF (A) IPD (A)
03053- 03053- Figure 4. V Figure 7. Law Conformance Error vs. I LOG vs. IREF for Multiple Temperatures REF (at IPD = 10 µA) for Multiple Temperatures, Normalized to 25°C
1.8 0.5 0.4 1.6 0.3 1.4 10µA 100µA 1mA B) 0.2 1.2 /d 0.1 1.0 10mV (V) 10nA G B ( 0 LO 0.8 100nA d V R; –0.1 1µA 1µA O R 0.6 10µA ER –0.2 10nA 100nA 0.4 100µA –0.3 1mA 0.2 –0.4 0 –0.5
008
1n 10n 100n 1µ 10µ 100µ 1m 10m
005
1n 10n 100n 1µ 10µ 100µ 1m 10m I IPD (A) PD (A)
03053- 03053- Figure 5. VLOG vs. IPD for Multiple Values of IREF (Decade Steps from 10 nA to 1 mA) Figure 8. Law Conformance Error vs. IPD for Multiple Values of IREF (Decade Steps from 10 nA to 1 mA) Rev. C | Page 6 of 24 Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics General Structure Theory Managing Intercept and Slope Response Time and Noise Considerations Power Supply Sequencing Applications Information Calibration Using a Negative Supply Log-Ratio Applications Reversing The Input Polarity Characterization Methods Evaluation Board Outline Dimensions Ordering Guide
