Datasheet ADA4505-1, ADA4505-2, ADA4505-4 (Analog Devices) - 3

ADA4505-1/ADA4505-2/ADA4505-4 SPECIFICATIONS ELECTRICAL CHARACTERISTICS—1.8 V OPERATION
VSY = 1.8 V, VCM = VSY/2, TA = 25°C, RL = 100 kΩ to GND, unless otherwise specified.
Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS Offset Voltage VOS 0 V ≤ VCM ≤ 1.8 V 0.5 3 mV −40°C ≤ TA ≤ +125°C 4 mV Input Bias Current IB 0.5 2 pA −40°C ≤ TA ≤ +85°C 50 pA −40°C ≤ TA ≤ +125°C 375 pA Input Offset Current IOS 0.05 1 pA −40°C ≤ TA ≤ +85°C 25 pA −40°C ≤ TA ≤ +125°C 130 pA Input Voltage Range −40°C ≤ TA ≤ +125°C 0 1.8 V Common-Mode Rejection Ratio CMRR 0 V ≤ VCM ≤ 1.8 V 85 100 dB −40°C ≤ TA ≤ +85°C 85 dB −40°C ≤ TA ≤ +125°C 80 dB Large Signal Voltage Gain AVO 0.05 V ≤ VOUT ≤ 1.75 V, 95 115 dB RL = 100 kΩ to VCM −40°C ≤ TA ≤ +125°C 95 dB Offset Voltage Drift ΔVOS/ΔT −40°C ≤ TA ≤ +125°C 2.5 μV/°C Input Resistance RIN 220 GΩ Input Capacitance Differential Mode CINDM 2.5 pF Input Capacitance Common Mode CINCM 4.7 pF OUTPUT CHARACTERISTICS Output Voltage High VOH RL = 100 kΩ to GND 1.78 1.79 V −40°C ≤ TA ≤ +125°C 1.78 V RL = 10 kΩ to GND 1.65 1.75 V −40°C ≤ TA ≤ +125°C 1.65 V Output Voltage Low VOL RL = 100 kΩ to VSY 2 5 mV −40°C ≤ TA ≤ +125°C 5 mV RL = 10 kΩ to VSY 12 25 mV −40°C ≤ TA ≤ +125°C 25 mV Short-Circuit Limit ISC VOUT = VSY or GND ±3.8 mA POWER SUPPLY Power Supply Rejection Ratio PSRR VSY = 1.8 V to 5 V 100 110 dB −40°C ≤ TA ≤ +85°C 100 dB −40°C ≤ TA ≤ +125°C 95 dB Supply Current per Amplifier ISY VOUT = VSY/2 ADA4505-1 10 11.5 μA –40°C ≤ TA ≤ +125°C 15 μA ADA4505-2/ADA4505-4 7 10 μA −40°C ≤ TA ≤ +125°C 15 μA DYNAMIC PERFORMANCE Slew Rate SR RL = 100 kΩ, CL = 20 pF, G = 1 6.5 mV/μs Gain Bandwidth Product GBP RL = 1 MΩ, CL = 20 pF, G = 1 50 kHz Phase Margin ΦM RL = 1 MΩ, CL = 20 pF, G = 1 52 Degrees NOISE PERFORMANCE Voltage Noise en p-p f = 0.1 Hz to 10 Hz 2.95 μV p-p Voltage Noise Density en f = 1 kHz 65 nV/√Hz Current Noise Density in f = 1 kHz 20 fA/√Hz Rev. D | Page 3 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATIONS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS—1.8 V OPERATION ELECTRICAL CHARACTERISTICS—5 V OPERATION ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION PULSE OXIMETER CURRENT SOURCE FOUR-POLE, LOW-PASS BUTTERWORTH FILTER FOR GLUCOSE MONITOR OUTLINE DIMENSIONS ORDERING GUIDE NOTES NOTES NOTES