ADA4691-2ACPZ-RL Analog Devices Integrated Circuit (LFCSP) In Stock
ADA4691-2ACPZ-RL is a dual, low-power, wideband, low-noise op-amp with rail-to-rail output by Analog Devices. Key specs: 98 dB CMRR, 0.36 nA maximum bias current, voltage-feedback architecture in a 10-pin LFCSP package. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- LFCSP
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- ADA4691-2ACPZ-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 ADA4691-2ACPZ-RL?
- Dual rail-to-rail output op-amp with 98 dB CMRR for precision signal chain applications
- Ultra-low bias current of 5 pA typical at 25°C enabling high-impedance sensor interfacing
- Wideband voltage-feedback architecture with low noise for ADC driver and filter designs
- Compact 10-pin LFCSP package enabling dual-channel amplification in space-constrained PCB layouts
What is ADA4691-2ACPZ-RL used for?
The ADA4691-2ACPZ-RL is suited for precision instrumentation amplifier front-ends, active filter stages, and high-impedance sensor interfaces where low noise and minimal input bias current are required. Its rail-to-rail output swing allows the full dynamic range of a single-supply ADC to be utilized in medical monitoring and portable data acquisition systems. The dual-channel configuration reduces component count in balanced differential signal conditioning circuits operating from low-voltage supplies.
What are the specifications of ADA4691-2ACPZ-RL?
| Pbfree Code | No |
| Manufacturer Package Code | CP-10-11 |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00036 µA |
| Bias Current-Max (IIB) @25C | 0.000005 µA |
| Common-mode Reject Ratio-Min | 70dB |
| Common-mode Reject Ratio-Nom | 98dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 3500 µV |
| JESD-30 Code | S-XQCC-N10 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 2 |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC10,.08SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 1.3V/us |
| Supply Current-Max | 0.55mA |
| Supply Voltage Limit-Max | 6V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Unity Gain BW-Nom | 3600 |
| Voltage Gain-Min | 2240 |
| Wideband | NO |
| Package | LFCSP |
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 ADA4691-2ACPZ-RL datasheet?
ADA4691-2ACPZ-RL Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for ADA4691-2ACPZ-RL?
Compatible alternatives and drop-in replacements for ADA4691-2ACPZ-RL:
Frequently Asked Questions
What CMRR and bias current specifications make the ADA4691-2ACPZ-RL suitable for precision differential measurement?
The ADA4691-2ACPZ-RL achieves a typical CMRR of 98 dB and a maximum bias current of 0.36 nA across temperature, with 5 pA typical at 25°C. These specifications allow it to accurately amplify small differential signals from bridge sensors or electrodes while rejecting millivolt-level common-mode noise on a single 3.3 V to 5 V supply.
How does the ADA4691-2ACPZ-RL's rail-to-rail output benefit single-supply ADC driver designs?
With a rail-to-rail output, the ADA4691-2ACPZ-RL swings to within millivolts of both supply rails on a 3.3 V or 5 V supply, maximizing the input range of 12-bit or 16-bit SAR ADCs. This eliminates the need for a negative supply rail in dual-supply architectures and improves dynamic range utilization in data acquisition front-ends and portable medical instruments.
For a high-impedance pH electrode interface, why is the 5 pA bias current of the ADA4691-2ACPZ-RL important?
pH electrodes present source impedances of 100 MΩ or higher. A bias current of 5 pA creates a voltage error of only 0.5 mV across 100 MΩ, which is negligible for 14-bit measurement accuracy. Higher bias currents of 10 nA to 100 nA would cause unacceptable offset errors and could polarize the electrode membrane, degrading measurement stability over time.
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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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