Part A
ADA4062-2ARZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 6529 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Replacement verdict
Compatible functional replacement candidate
The ADA4077-2BRZ-RL is a viable functional replacement candidate for the ADA4062-2ARZ in precision, low-frequency signal-conditioning applications, as both are dual operational amplifiers in the same SOIC-8 package with comparable supply-voltage ranges. However, the ADA4077-2BRZ-RL offers substantially lower input bias current, lower offset voltage, and lower voltage noise, while the ADA4062-2ARZ provides a wider gain-bandwidth product and higher slew rate. Designers should validate AC performance, dynamic response, and loop stability in the target circuit before committing to substitution.
Package and Pinout
High match
Supply Voltage Range
High match
Gain Bandwidth Product
Validation required
Input Offset Voltage and Noise
Validation required
Parts at a glance
Part B
ADA4077-2BRZ-RL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 9876 PCS
- Package
- SOIC-8
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADA4062-2ARZ | ADA4077-2BRZ-RL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 2 | 2 | Both are dual op-amps, so channel count is compatible for direct substitution in dual-amplifier circuits. |
| Input Offset Voltage (Max) | 2.5 mV | 25 µV | The ADA4077-2BRZ-RL has far lower offset, making it preferable for precision DC applications where the ADA4062-2ARZ may introduce larger errors. |
| Input Bias Current (Typ) | 0.5 pA | 0.5 nA | The ADA4062-2ARZ has JFET inputs with much lower bias current, which is critical for high-impedance sensor and photodiode interfaces. |
| Gain Bandwidth Product | 1.4 MHz | 3.6 MHz | The ADA4077-2BRZ-RL offers wider bandwidth, supporting higher-frequency signal processing than the ADA4062-2ARZ. |
| Slew Rate | 3.3 V/µs | 1.2 V/µs | The ADA4062-2ARZ slews faster, which benefits large-signal transient response and pulse applications. |
| Input Voltage Noise Density (1 kHz) | 36 nV/√Hz | 7 nV/√Hz | The ADA4077-2BRZ-RL has significantly lower noise, making it better suited for low-level signal amplification. |
| Supply Voltage Range | ±5 V to ±15 V | ±2.5 V to ±15 V | The ADA4077-2BRZ-RL operates at lower supply voltages, enabling use in lower-power or single-supply-referenced systems. |
| Quiescent Current per Amplifier (Typ) | 0.2 mA | 0.4 mA | The ADA4062-2ARZ draws less supply current, which is advantageous for battery-powered and low-power designs. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Both cover the same industrial temperature range, so environmental compatibility is equivalent. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package and pinout allow drop-in board replacement without layout changes. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADA4062-2ARZ | ADA4077-2BRZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Amplifier Type | J-FET | General Purpose |
| Number of Circuits | 2 | 2 |
| Slew Rate | 3.3V/µs | 1.2V/µs |
| Gain Bandwidth Product | 1.4 MHz | 3.6 MHz |
| -3 dB Bandwidth | - | 5.5 MHz |
| Current - Input Bias | 2 pA | 400 pA |
| Voltage - Input Offset | 750 µV | 10 µV |
| Supply Current | 165µA (x2 Channels) | 400µA (x2 Channels) |
| Current - Output / Channel | 20 mA | 10 mA |
| Voltage - Supply Span(Min) | 8 V | 5 V |
| Voltage - Supply Span(Max) | 36 V | 30 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the ADA4062-2ARZ and ADA4077-2BRZ-RL?
The ADA4062-2ARZ is a dual JFET-input operational amplifier in an 8-lead SOIC package, while the ADA4077-2BRZ-RL is a dual precision bipolar-input op amp in an 8-lead SOIC package supplied in tape and reel. The ADA4062-2 offers low input bias current and high input impedance typical of JFET inputs, whereas the ADA4077-2 provides lower offset voltage and lower voltage noise suitable for precision DC applications.
Are the ADA4062-2ARZ and ADA4077-2BRZ-RL pin-compatible?
Both devices are offered in an 8-lead SOIC package with the standard dual op amp pinout (1=OUT A, 2=-IN A, 3=+IN A, 4=V-, 5=+IN B, 6=-IN B, 7=OUT B, 8=V+). This standard pinout allows them to be used in the same PCB footprint, but electrical differences must be validated before substitution.
Which device is better suited for high-impedance sensor interfaces?
The ADA4062-2ARZ is generally preferred for high-impedance sensor interfaces because its JFET input stage provides very low input bias current and high input impedance. The ADA4077-2BRZ-RL, with a bipolar input stage, has higher input bias current and is better suited to precision low-offset applications rather than very high source impedance nodes.
Which device offers lower offset voltage for precision DC applications?
The ADA4077-2BRZ-RL is the precision bipolar op amp and is specified with lower offset voltage and lower offset voltage drift than the ADA4062-2ARZ. For precision DC signal conditioning where offset and drift are critical, the ADA4077-2BRZ-RL is the more appropriate choice.
How do the input bias currents of the two devices compare?
The ADA4062-2ARZ, with its JFET input stage, has significantly lower input bias current than the ADA4077-2BRZ-RL. The ADA4077-2BRZ-RL uses a bipolar input stage and therefore exhibits higher input bias current, which must be accounted for in high-impedance circuit designs.
What does the -RL suffix on the ADA4077-2BRZ-RL indicate?
The -RL suffix indicates that the ADA4077-2BRZ-RL is supplied in tape-and-reel packaging, which is intended for automated pick-and-place assembly. The ADA4062-2ARZ is supplied in standard tube or tray packaging; the electrical performance of the devices is not changed by the packaging suffix.
Can the ADA4062-2ARZ and ADA4077-2BRZ-RL be used interchangeably in an existing design?
They should not be treated as drop-in interchangeable without validation. Although both are dual op amps in the same 8-lead SOIC package with the same pinout, their input stages differ (JFET versus bipolar), resulting in different input bias current, offset voltage, noise, and bandwidth characteristics. The circuit must be re-evaluated against the datasheet specifications of the replacement device.