ADA4610-2ARZ - Dual Low Noise JFET Op Amp | Analog Devices
MPN: ADA4610-2ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.47 | $1,235.00 |
| 1,000 | $2.19 | $2,190.00 |
ADA4610-2ARZ Overview
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, used in signal conditioning, filtering, and mathematical operations. The ADA4610-2 is a JFET-input op amp, which provides very high input impedance and low input bias current, making it ideal for interfacing with high-impedance sensors and precision analog circuits. It belongs to the family of precision amplifiers, which are characterized by low offset voltage, low drift, and low noise, essential for accurate signal processing.
Key features of the ADA4610-2ARZ include a low input voltage noise of 7.3 nV/√Hz at 1 kHz, a low input current noise of 0.6 fA/√Hz, a maximum offset voltage of 0.2 mV, and a typical input bias current of 5 pA. The device also offers a gain bandwidth product of 16.5 MHz, a slew rate of 61 V/µs, and a rail-to-rail output stage that swings within 50 mV of the supply rails. These specifications make it suitable for high-speed, high-precision signal conditioning.
Technically, the ADA4610-2 uses a JFET input stage to achieve high input impedance and low bias current, combined with a precision bipolar output stage for low offset and noise. The device includes internal ESD protection and can withstand input voltages up to 0.3V beyond the supply rails without damage. The rail-to-rail output allows maximum dynamic range in single-supply applications, and the low noise performance is critical for applications such as medical instrumentation and audio processing.
Typical applications include precision data acquisition systems, medical instrumentation, audio signal processing, active filters, and sensor signal conditioning. The low noise and low bias current make it ideal for photodiode amplifiers and high-impedance sensor interfaces. The wide supply range and rail-to-rail output also enable use in battery-powered and single-supply systems.
When designing with the ADA4610-2ARZ, ensure proper power supply decoupling with 0.1µF capacitors close to the supply pins. For optimal noise performance, use low-value resistors in the feedback network and keep the input traces short. The device is specified for operation from -40°C to +125°C, making it suitable for industrial environments.
Drop-in alternatives for ADA4610-2ARZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADA4610-2ARZ (same form factor and footprint) — differing in Amplifier Type, Gain Bandwidth Product, Slew Rate, Current - Output / Channel, Input Bias Current.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
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ADA4622-2ARZ
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ADA4610-2ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Supply Voltage Range (Dual) | ±4.5 V to ±15 V |
| Supply Voltage Range (Single) | 9 V to 30 V |
| Input Offset Voltage (Max) | 0.2 mV |
| Input Bias Current (Typ) | 5 pA |
| Input Voltage Noise Density | 7.3 nV/√Hz at 1 kHz |
| Input Current Noise Density | 0.6 fA/√Hz |
| Gain Bandwidth Product | 16.5 MHz |
| Slew Rate | 61 V/µs |
| Output Type | Rail-to-Rail |
| Package / Case | 8-SOIC |
| Operating Temperature Range | -40°C to +125°C |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
| Amplifier Type | J-FET |
ADA4610-2ARZ Pin Configuration
| Pin 1 | OUT A — Output of amplifier A |
| Pin 2 | -IN A — Inverting input of amplifier A |
| Pin 3 | +IN A — Non-inverting input of amplifier A |
| Pin 4 | V- — Negative supply voltage |
| Pin 5 | +IN B — Non-inverting input of amplifier B |
| Pin 6 | -IN B — Inverting input of amplifier B |
| Pin 7 | OUT B — Output of amplifier B |
| Pin 8 | V+ — Positive supply voltage |
Typical Applications
ADA4610-2ARZ is suitable for 6 applications: Medical Instrumentation, Audio Signal Processing, Precision Data Acquisition, Active Filters, Sensor Signal Conditioning, Industrial Control Systems.
Medical Instrumentation
The ADA4610-2ARZ's low input voltage noise (7.3 nV/√Hz) and low input bias current (5 pA) make it ideal for medical instrumentation such as ECG and EEG amplifiers. These signals are low amplitude and high impedance, requiring an op amp with minimal noise and bias current to avoid signal degradation. The rail-to-rail output ensures maximum dynamic range for the ADC interface, and the wide supply range accommodates battery-powered devices. The dual channel configuration allows for multi-channel signal processing in a compact footprint.
Recommended
Audio Signal Processing
In audio applications, the ADA4610-2ARZ provides low noise and low distortion, essential for high-fidelity signal processing. Its 16.5 MHz gain bandwidth product and 61 V/µs slew rate ensure accurate reproduction of audio signals without slew-induced distortion. The rail-to-rail output allows maximum headroom in single-supply audio systems. The low input bias current minimizes DC offset errors in coupling circuits, making it suitable for active filters, preamplifiers, and equalizers.
Recommended
Precision Data Acquisition
The ADA4610-2ARZ is well-suited for precision data acquisition systems, where low offset voltage (0.2 mV max) and low noise are critical for accurate signal conversion. Its high input impedance and low bias current minimize loading on sensors, preserving signal integrity. The wide supply range allows operation from various power rails, and the rail-to-rail output maximizes the ADC input range. The dual channel configuration enables simultaneous sampling of multiple signals, reducing component count and board space.
Recommended
Active Filters
The ADA4610-2ARZ's 16.5 MHz gain bandwidth product and low noise make it an excellent choice for active filter designs, such as low-pass, high-pass, and band-pass filters. Its high slew rate ensures minimal distortion for large signal swings, and the rail-to-rail output allows filters to operate near the supply rails. The low input bias current reduces DC errors in filter circuits, and the dual channel configuration allows for multi-stage filters in a single package.
Recommended
Sensor Signal Conditioning
The ADA4610-2ARZ is ideal for conditioning signals from high-impedance sensors such as photodiodes, pH probes, and piezoelectric sensors. Its low input bias current (5 pA) minimizes leakage errors, and its low voltage noise ensures high signal-to-noise ratio. The rail-to-rail output allows direct interface to ADCs, and the wide supply range supports various sensor power configurations. The dual channel design enables conditioning of multiple sensors in a compact solution.
Recommended
Industrial Control Systems
In industrial control systems, the ADA4610-2ARZ provides reliable performance over a wide temperature range (-40°C to +125°C) and supply voltage variations. Its low offset voltage and drift ensure accurate control loop operation, while the rail-to-rail output allows direct drive of actuators and ADCs. The low noise performance is beneficial for precise measurement and control, and the dual channel configuration reduces component count in multi-channel systems.
Recommended
Recommended Products Summary
Engineering reference data for ADA4610-2ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADA4610-2ARMZ | OPA2140AID | ADA4622-2ARZ |
|---|---|---|---|---|
| Package | 8-SOIC | 8-MSOP | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Number of Channels | 2 | 2 | 2 | 2 |
| Supply Voltage Range (Dual) | ±4.5V to ±15V | ±4.5V to ±15V | ±2.25V to ±18V | ±2.5V to ±15V |
| Input Offset Voltage (Max) | 0.2 mV | 0.2 mV | 0.12 mV | 0.2 mV |
| Input Bias Current (Typ) | 5 pA | 5 pA | 10 pA | 2 pA |
| Input Voltage Noise Density | 7.3 nV/√Hz | 7.3 nV/√Hz | 5.5 nV/√Hz | 6.5 nV/√Hz |
| Gain Bandwidth Product | 16.5 MHz | 16.5 MHz | 11 MHz | 8 MHz |
Key Differentiators
- Lower input bias current (5 pA) compared to OPA2140AID (10 pA) (vs OPA2140AID)
- Higher gain bandwidth product (16.5 MHz) than ADA4622-2ARZ (8 MHz) (vs ADA4622-2ARZ)
- Wider supply voltage range (up to ±15V) compared to OPA2140AID (±18V max) (vs OPA2140AID)
Design Notes
Ensure proper power supply decoupling by placing 0.1µF ceramic capacitors close to the V+ and V- pins. For high-frequency noise, add a 10µF tantalum capacitor in parallel. The ADA4610-2ARZ operates from ±4.5V to ±15V dual supply or 9V to 30V single supply, so verify the supply rails are within these limits to avoid damage.
For optimal noise performance, keep the input traces short and shielded. Use a ground plane to minimize noise coupling. Place the feedback resistors close to the inverting input to reduce parasitic capacitance. The 8-SOIC package has a thermal pad; connect it to the ground plane for better heat dissipation.
Avoid exceeding the input common-mode voltage range, which extends 0.3V beyond the supply rails. The device has internal ESD protection, but external protection diodes may be needed for harsh environments. Also, ensure the output load does not exceed the specified output current capability to prevent thermal shutdown.
Compliance Information
RoHS compliant per distributor listings. AEC-Q100 not applicable for this standard grade part.
