Datasheet ADL5306 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 60 dB-RANGE (100 nA-100 µA) Low-Cost Logarithmic Converter |
| Seiten / Seite | 16 / 3 — Table 1. VP = 5 V, VN = 0, TA = 25. C, RREF = 200 kΩ, unless otherwise … |
| Dateiformat / Größe | PDF / 2.2 Mb |
| Dokumentensprache | Englisch |
Table 1. VP = 5 V, VN = 0, TA = 25. C, RREF = 200 kΩ, unless otherwise noted Parameter Conditions. Min1. Typ Max1. Unit
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Table 1. VP = 5 V, VN = 0, TA = 25
°
C, RREF = 200 kΩ, unless otherwise noted Parameter Conditions Min1 Typ Max1 Unit
INPUT INTERFACE INPT (Pin 4), IREF (Pin 3) Specified Current Range, IPD Flows toward INPT pin 100n 100µ A Input Current Min/Max Limits Flows toward INPT pin 1 mA Reference Current, IREF, Range Flows toward IREF pin 100n 100µ A Summing Node Voltage Internally preset; may be altered by user 0.46 0.5 0.54 V Temperature Drift –40°C < TA < +85°C 0.015 mV/°C Input Offset Voltage VIN – VSUM , VIREF – VSUM –20 +20 mV LOGARITHMIC OUTPUT VLOG (Pin 9) Logarithmic Slope 190 200 210 mV/dec –40°C < TA < +85°C 185 215 mV/dec Logarithmic Intercept2 0.3 1 1.7 nA –40°C < TA < +85°C 0.1 2.5 nA Law Conformance Error 100 nA < IPD < 100 µA 0.1 0.4 dB Wideband Noise3 IPD > 1 µA 0.7 µV/√Hz Small-Signal Bandwidth3 IPD > 1 µA 0.7 MHz Maximum Output Voltage 1.7 V Minimum Output Voltage Limited by VN = 0 V 0.01 V Output Resistance 4.375 5 5.625 kΩ REFERENCE OUTPUT VREF (Pin 2) Voltage wrt Ground 2.435 2.5 2.565 V –40°C < TA < +85°C 2.4 2.6 V Maximum Output Current Sourcing (grounded load) 20 mA Incremental Output Resistance Load current < 10 mA 2 Ω OUTPUT BUFFER BFIN (Pin 10); SCAL (Pin 11); VOUT (Pin 12) Input Offset Voltage –20 +20 mV Input Bias Current Flowing out of Pin 10 or Pin 11 0.4 µA Incremental Input Resistance 35 MΩ Output Range RL = 1 kΩ to ground VP – 0.1 V Incremental Output Resistance Load current < 10 mA 0.5 Ω Peak Source/Sink Current 50 mA Small-Signal Bandwidth GAIN = 1 15 MHz Slew Rate 0.2 V to 4.8 V output swing 15 V/µs POWER SUPPLY VPOS (Pin 8); VNEG (Pin 6) Positive Supply Voltage (VP – VN ) ≤ 11 V 3 5 5.5 V Quiescent Current 5.4 6.6 mA Negative Supply Voltage (Optional) (VP – VN ) ≤ 11 V –5.5 0 V 1 Minimum and maximum specified limits on parameters that are guaranteed but not tested are six sigma values. 2 Other values of logarithmic intercept can be achieved by adjusting RREF. 3 Output noise and incremental bandwidth are functions of input current measured using the output buffer connected for GAIN = 1. Rev. 0 | Page 3 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION AND PIN FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS GENERAL STRUCTURE THEORY MANAGING INTERCEPT AND SLOPE RESPONSE TIME AND NOISE CONSIDERATIONS APPLICATIONS USING A NEGATIVE SUPPLY CHARACTERIZATION METHODS EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE
Table 1. VP = 5 V, VN = 0, TA = 25
°
C, RREF = 200 kΩ, unless otherwise noted Parameter Conditions Min1 Typ Max1 Unit
INPUT INTERFACE INPT (Pin 4), IREF (Pin 3) Specified Current Range, IPD Flows toward INPT pin 100n 100µ A Input Current Min/Max Limits Flows toward INPT pin 1 mA Reference Current, IREF, Range Flows toward IREF pin 100n 100µ A Summing Node Voltage Internally preset; may be altered by user 0.46 0.5 0.54 V Temperature Drift –40°C < TA < +85°C 0.015 mV/°C Input Offset Voltage VIN – VSUM , VIREF – VSUM –20 +20 mV LOGARITHMIC OUTPUT VLOG (Pin 9) Logarithmic Slope 190 200 210 mV/dec –40°C < TA < +85°C 185 215 mV/dec Logarithmic Intercept2 0.3 1 1.7 nA –40°C < TA < +85°C 0.1 2.5 nA Law Conformance Error 100 nA < IPD < 100 µA 0.1 0.4 dB Wideband Noise3 IPD > 1 µA 0.7 µV/√Hz Small-Signal Bandwidth3 IPD > 1 µA 0.7 MHz Maximum Output Voltage 1.7 V Minimum Output Voltage Limited by VN = 0 V 0.01 V Output Resistance 4.375 5 5.625 kΩ REFERENCE OUTPUT VREF (Pin 2) Voltage wrt Ground 2.435 2.5 2.565 V –40°C < TA < +85°C 2.4 2.6 V Maximum Output Current Sourcing (grounded load) 20 mA Incremental Output Resistance Load current < 10 mA 2 Ω OUTPUT BUFFER BFIN (Pin 10); SCAL (Pin 11); VOUT (Pin 12) Input Offset Voltage –20 +20 mV Input Bias Current Flowing out of Pin 10 or Pin 11 0.4 µA Incremental Input Resistance 35 MΩ Output Range RL = 1 kΩ to ground VP – 0.1 V Incremental Output Resistance Load current < 10 mA 0.5 Ω Peak Source/Sink Current 50 mA Small-Signal Bandwidth GAIN = 1 15 MHz Slew Rate 0.2 V to 4.8 V output swing 15 V/µs POWER SUPPLY VPOS (Pin 8); VNEG (Pin 6) Positive Supply Voltage (VP – VN ) ≤ 11 V 3 5 5.5 V Quiescent Current 5.4 6.6 mA Negative Supply Voltage (Optional) (VP – VN ) ≤ 11 V –5.5 0 V 1 Minimum and maximum specified limits on parameters that are guaranteed but not tested are six sigma values. 2 Other values of logarithmic intercept can be achieved by adjusting RREF. 3 Output noise and incremental bandwidth are functions of input current measured using the output buffer connected for GAIN = 1. Rev. 0 | Page 3 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION AND PIN FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS GENERAL STRUCTURE THEORY MANAGING INTERCEPT AND SLOPE RESPONSE TIME AND NOISE CONSIDERATIONS APPLICATIONS USING A NEGATIVE SUPPLY CHARACTERIZATION METHODS EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE