ADA4051-1AKSZ-RL Analog Devices Integrated Circuit (Other) In Stock
The ADA4051-1AKSZ-RL is a single-channel, rail-to-rail input/output chopper-stabilized operational amplifier from Analog Devices. It delivers a 135 dB typical CMRR and 0.07 nA bias current in a compact SOT-23-5 package, available on tape-and-reel for automated assembly.
- Manufacturer
- Analog Devices
- Package
- Other
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- ADA4051-1AKSZ-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
- Chopper-stabilized architecture achieving 135 dB typical CMRR
- Ultra-low bias current of 0.07 nA at 25°C for high-impedance sensor interfaces
- Rail-to-rail input and output for maximum dynamic range on low supply voltages
- Integrated frequency compensation simplifying external circuit design
- SOT-23-5 package in tape-and-reel (RL) format for high-volume automated placement
Applications
The ADA4051-1AKSZ-RL is ideal for precision sensor signal conditioning in battery-powered instruments where its rail-to-rail operation and sub-nanoamp bias current minimize power consumption and measurement error. Its chopper-stabilized architecture eliminates DC offset drift, making it well-suited for medical biopotential amplifiers, strain-gauge bridges, and thermocouple interfaces. The device also fits current-sensing and data-acquisition front-end circuits in portable industrial equipment where a 110 dB minimum CMRR ensures strong rejection of common-mode power-line noise.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | KS-5 |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | CHOPPER-STAB |
| Average Bias Current-Max (IIB) | 0.0002 µA |
| Bias Current-Max (IIB) @25C | 0.00007 µA |
| Common-mode Reject Ratio-Min | 110dB |
| Common-mode Reject Ratio-Nom | 135dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 17000 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Low-Bias | YES |
| Low-Offset | YES |
| Micropower | YES |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP5/6,.08 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.06V/us |
| Supply Current-Max | 0.02mA |
| Supply Voltage Limit-Max | 6V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | MATTE TIN |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 125 |
| Voltage Gain-Min | 100000 |
| 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
What CMRR does the ADA4051-1AKSZ-RL achieve, and why does that matter for sensor circuits?
The ADA4051-1AKSZ-RL achieves a typical CMRR of 135 dB with a guaranteed minimum of 110 dB. In sensor bridge or thermocouple circuits, high CMRR suppresses 50 Hz or 60 Hz power-line noise that appears equally on both inputs, ensuring the amplifier outputs only the small differential signal of interest without adding millivolt-level interference.
How does the chopper-stabilization architecture of the ADA4051-1AKSZ-RL benefit precision DC measurement?
Chopper stabilization dynamically cancels the amplifier's own input offset voltage and low-frequency 1/f noise by continuously modulating and demodulating the signal. This technique keeps the effective input offset well below 5 µV over temperature, which is critical for DC and very-low-frequency measurements such as weigh-scale bridges, thermocouple amplifiers, or strain-gauge conditioning where drift over 1 µV can represent a significant measurement error.
Which portable or battery-operated designs benefit most from the ADA4051-1AKSZ-RL's ultra-low 0.07 nA bias current?
Designs using high-impedance pH electrodes, photodiodes operating in photovoltaic mode, or electro-chemical gas sensors benefit most from the 0.07 nA bias current at 25°C. Such sensors have source impedances in the gigaohm range; even 1 nA of bias current would introduce millivolt-level errors, so the ADA4051-1AKSZ-RL's sub-nanoamp spec preserves measurement accuracy in portable medical devices and environmental monitors.
What package does the ADA4051-1AKSZ-RL use, and what does the RL suffix indicate for procurement?
The ADA4051-1AKSZ-RL is supplied in a KS-5 (SOT-23-5) package measuring approximately 3 mm × 1.75 mm. The RL suffix indicates tape-and-reel packaging, typically 3000 units per reel, which is required for pick-and-place automated assembly in volume production and is the standard form factor requested in SMT manufacturing purchase orders.
How does the ADA4051-1AKSZ-RL compare to a conventional CMOS op-amp in a 3.3 V single-supply data-acquisition front end?
A conventional CMOS op-amp may have input offset voltages of 1 mV to 5 mV and offset temperature coefficients of several µV/°C, introducing significant gain-error in a 12-bit or 16-bit ADC front end. The ADA4051-1AKSZ-RL's chopper stabilization reduces effective offset to under 5 µV and drift to below 0.05 µV/°C, while rail-to-rail operation on a 3.3 V supply maximizes the usable input and output range, improving overall system dynamic range.
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