Data SheetADA4505-1/ADA4505-2/ADA4505-4 TA = 25°C, unless otherwise noted. 100225100225VVSY = 5VSY = 1.8V80180801806013560135)PHASE)PHASEB4090B4090dd((ININ20452045rees)rees)GAGAINegGAGAINeg00D00D((OOPEOOPE S-L –20–45AS-L –20–45ANHNHEPEP–40–90–40–90OPOP–60–135–60–135–80–180–80–180–100–225–100–225 5 1001k10k100k1M 26 0 1001k10k100k1M 02 6- 6- FREQUENCY (Hz) 41 FREQUENCY (Hz) 41 07 07 Figure 25. Open-Loop Gain and Phase vs. Frequency Figure 28. Open-Loop Gain and Phase vs. Frequency 6060V50SY = 1.8VV50SY = 5VG = –100G = –1004040)30)B30dG = –10BG = –10(d20(20ININ10GA10G = –1GAG = –100OOPOOP-L –10-LD–10ED E–20OS–20LOS LC –30C –30–40–40–50–50–60 7 –601001k10k100k1M 02 28 0 6- 1001k10k100k1M 6- FREQUENCY (Hz) 41 41 07 FREQUENCY (Hz) 07 Figure 26. Closed-Loop Gain vs. Frequency Figure 29. Closed-Loop Gain vs. Frequency 10k10kVSY = 1.8VVG = –10SY = 5VG = –10G = –1001k1kG = –100G = –1G = –1100)100)Ω (ΩT( TZ OU 10Z OU 10110.1 2 0.1101001k10k100k1M -06 101001k10k100k1M -063 FREQUENCY (Hz) 416 416 07 FREQUENCY (Hz) 07 Figure 27. Output Impedance vs. Frequency Figure 30. Output Impedance vs. Frequency Rev. E | Page 9 of 24 Document Outline Features Applications General Description Pin Configurations 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