Datasheet ADUCM355 (Analog Devices) - 8

FabricanteAnalog Devices
DescripciónPrecision Analog Microcontroller with Chemical Sensor Interface
Páginas / Página28 / 8 — ADuCM355. Data Sheet. Parameter Symbol. Min. Typ. Max. Unit. Test. …
RevisiónC
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ADuCM355. Data Sheet. Parameter Symbol. Min. Typ. Max. Unit. Test. Conditions/Comments

ADuCM355 Data Sheet Parameter Symbol Min Typ Max Unit Test Conditions/Comments

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ADuCM355 Data Sheet Parameter Symbol Min Typ Max Unit Test Conditions/Comments
Overcurrent Limit Protection 20 mA Amplifiers try to limit source and sink current to this value via internal clamp Allowed Duration of Overcurrent 5 sec User must limit duration of overcurrent Limit1 condition to less than this value or risk damaging amplifier Allowed Frequency of Overcurrent 1 Per Conditions hour Short-Circuit Current 12 mA When amplifier output is shorted to ground PROGRAMMABLE RESISTORS Low Power TIA RLOAD on SE0, SE1 Inputs1 Drift over Temperature ±200 ppm/°C 10 Ω, 30 Ω, 100 Ω, 1500 Ω, 3000 Ω, 3500 Ω ±400 ppm/°C 50 Ω 0 Ω RLOAD Accuracy 0.01 0.08 0.15 Ω 10 Ω RLOAD Accuracy 9.8 11.7 13.5 Ω 30 Ω RLOAD Accuracy 28 33.8 39 Ω 50 Ω RLOAD Accuracy 48 55 63 Ω 100 Ω RLOAD Accuracy 88 110 130 Ω Low Power TIA RTIA Gain on SE0, SE1 Inputs1 Accuracy −5 +15 % User programmable, includes 1 kΩ, 2 kΩ, 3 kΩ, 4 kΩ, 6 kΩ, 8 kΩ, 10 kΩ, 16 kΩ, 20 kΩ, 22 kΩ, 30 kΩ, 40 kΩ, 64 kΩ, 100 kΩ, 128 kΩ, 160 kΩ, 192 kΩ, 256 kΩ, 512 kΩ 115 120 130 Ω 200 Ω setting with RLOAD = 100 Ω Drift over Temperature ±100 ppm/°C Low Power TIA RTIA Mismatch Error1 Error when moving up or down one RTIA value −0.6 +0.2 +0.6 % 512 kΩ to 2 kΩ range excluding 40 kΩ −3.5 +0.5 +3.5 % 40 kΩ (up to 48 kΩ, down to 32 kΩ) ±20 % 200 Ω HPTIA RLOAD on SE0, SE1 Inputs1 Accuracy 102 110 116 Ω Fixed 100 Ω target setting Drift ±160 ppm/°C HPTIA RTIA Gain on SE0, SE1 Inputs1 RTIA02 and RTIA04 Accuracy ±20 % User programmable, includes 0.2 kΩ, 1 kΩ, 5 kΩ, 10 kΩ, 20 kΩ, 40 kΩ, 80 kΩ, 160 kΩ Drift ±200 ppm/°C HPTIA RLOAD on DE0, DE1 Inputs1 RLOAD03 and RLOAD05 Accuracy 0.001 0.15 Ω 0 Ω setting 5 10.7 Ω 10 Ω setting 26.5 32.6 37.6 Ω 30 Ω setting ±20 % 30 Ω, 50 Ω,and 100 Ω settings Drift over Temperature ±0.2 %/°C 10 Ω setting ±200 ppm/°C Excludes RLOAD = 0 Ω and 10 Ω HPTIA RTIA Gain on DE0, DE1 Inputs1 User programmable, includes 0.1 kΩ, 0.2 kΩ, 1 kΩ, 5 kΩ, 10 kΩ, 20 kΩ, 40 kΩ, 80 kΩ, 160 kΩ Accuracy 120 135 150 Ω 100 Ω setting 230 250 290 Ω 200 Ω setting ±20 % 1 kΩ, 5 kΩ, 10 kΩ, 20 kΩ, 40 kΩ, 80 kΩ, 160 kΩ Drift over Temperature ±350 ppm/°C 100 Ω, 200 Ω settings ±200 ppm/°C 1 kΩ, 5 kΩ, 10 kΩ, 20 kΩ, 40 kΩ, 80 kΩ, 160 kΩ Rev. C | Page 8 of 28 Document Outline FEATURES APPLICATIONS SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION SPECIFICATIONS MICROCONTROLLER ELECTRICAL SPECIFICATIONS RMS NOISE RESOLUTION OF ADC TIMING SPECIFICATIONS Timing Diagrams ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS APPLICATIONS INFORMATION RECOMMENDED CIRCUIT AND COMPONENT VALUES OUTLINE DIMENSIONS ORDERING GUIDE