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
What are the key features of ADA4505-1ACBZ-RL?
- 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
What is ADA4505-1ACBZ-RL used for?
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.
What are the specifications of ADA4505-1ACBZ-RL?
| 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 |
Where can I find the ADA4505-1ACBZ-RL datasheet?
ADA4505-1ACBZ-RL Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for ADA4505-1ACBZ-RL?
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.
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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.
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