ADA4505-1ACBZ-RL Analog Devices Integrated Circuit (Other) In Stock
ADA4505-1ACBZ-RL is a precision single operational amplifier from Analog Devices, offering 85 dB minimum CMRR and an ultralow bias current of 2 pA at 25°C. Voltage-feedback architecture with frequency compensation enables stable, low-noise signal processing. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Other
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- ADA4505-1ACBZ-RL Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultralow input bias current of 2 pA at 25°C for high-impedance transducer interfaces without signal loading
- 85 dB minimum CMRR (100 dB nominal) for superior noise rejection in differential measurement circuits
- Voltage-feedback architecture with built-in frequency compensation ensures unity-gain stability
- Compact CB-6-7 package enables integration into space-constrained IoT and portable instrument designs
Applications
The ADA4505-1ACBZ-RL is designed for precision measurement applications where ultralow bias currents and high CMRR are essential, such as pH probe amplifiers, electrochemical sensor interfaces, and high-impedance transducer front-ends. Its 2 pA input bias current makes it exceptionally well-suited for charge-sensitive amplifiers in radiation detection and capacitive sensing. The part also serves battery-powered medical instrumentation and portable data loggers where minimizing quiescent input current extends battery life.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | CB-6-7 |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.000375 µA |
| Bias Current-Max (IIB) @25C | 0.000002 µA |
| Common-mode Reject Ratio-Min | 85dB |
| Common-mode Reject Ratio-Nom | 100dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 4000 µV |
| JESD-30 Code | R-PBGA-B6 |
| JESD-609 Code | e3 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA6,2X3,16 |
| Package Shape | RECTANGULAR |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Packing Method | TR |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 6500V/us |
| Supply Current-Max | 0.015mA |
| Supply Voltage Limit-Max | 5.5V |
| Supply Voltage-Nom (Vsup) | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | MATTE TIN |
| Terminal Form | BALL |
| Terminal Pitch | 0.4mm |
| Terminal Position | BOTTOM |
| Unity Gain BW-Nom | 50 |
| Voltage Gain-Min | 56200 |
| Wideband | NO |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How low is the input bias current of the ADA4505-1ACBZ-RL, and which sensor types benefit most from this specification?
The ADA4505-1ACBZ-RL has an input bias current of only 2 pA at 25°C, which is among the lowest available in voltage-feedback op-amps. This ultralow current is critical for pH probes, ion-selective electrodes, and piezoelectric sensors, where the source impedance can reach hundreds of megaohms and even a 1 pA loading current would introduce a measurable offset voltage.
What CMRR performance does the ADA4505-1ACBZ-RL guarantee, and how does this compare to standard op-amps?
The ADA4505-1ACBZ-RL specifies a minimum CMRR of 85 dB with a nominal value of 100 dB, which exceeds the typical 60–70 dB of general-purpose op-amps. This high rejection ratio is valuable in differential sensor bridges and instrumentation amplifier topologies where power-line interference at 50 Hz or 60 Hz must be suppressed by more than 80 dB to maintain measurement accuracy below 1 mV.
Is the ADA4505-1ACBZ-RL suitable for battery-powered portable instruments, and what end-of-life status applies?
Yes, the ADA4505-1ACBZ-RL is well-suited for battery-powered portable instruments because its ultralow 2 pA bias current contributes negligible quiescent drain. The part is supplied on tape-and-reel (RL suffix) in the 6-lead CB-6-7 package, supporting high-volume automated assembly. Buyers should note the YTEOL indicator is 0, which may signal limited projected end-of-life inventory; verifying current stock levels and securing safety stock is recommended before production ramp.
For a precision ECG front-end requiring less than 10 pA input leakage, does ADA4505-1ACBZ-RL meet the requirement at body temperature?
The ADA4505-1ACBZ-RL specifies a maximum average input bias current of 0.000375 µA (375 fA average), and at 25°C the maximum is 2 pA, both well within the 10 pA budget for ECG front-end applications. At body temperature of 37°C, bias current typically doubles per 10°C increase for JFET inputs; even at 37°C the estimated bias current remains below 5 pA, comfortably inside the 10 pA limit for single-lead ECG electrode amplifiers.
Related Guides
How to Choose a 3528 SMD Indicator LED for Blue Status Lighting: Selection Guide
A practical 3528 SMD indicator LED selection guide using 150141BS73100 and related Wurth 150141 variants for blue status lighting.
Jul 5, 2026
BAS70KFILM Design Guide for Low-Leakage Signal Clamping and RF Detector Inputs
Practical BAS70KFILM design guidance for signal clamps, RF detector inputs, leakage control, capacitance, layout, and sourcing alternatives.
Jul 5, 2026
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”