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Analog Devices Inc. ADA4077-2BRZ
- Part No.:
- ADA4077-2BRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4077-2BRZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,984
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Product details
Overview
ADA4077-2BRZ from Analog Devices is a dual-channel, high-precision operational amplifier optimized for low-offset, low-drift, low-noise signal conditioning in industrial and instrumentation systems. It delivers 25 µV max offset voltage (B grade), 0.25 µV/°C max drift, 6.9 nV/√Hz voltage noise density at 1 kHz, and 3.9 MHz gain bandwidth - enabling accurate DC-coupled amplification in RTD sensor front-ends and precision filters.
For engineers reviewing the ADA4077-2BRZ datasheet, ADA4077-2BRZ pinout, ADA4077-2BRZ application, or ADA4077-2BRZ equivalent, key selection criteria include guaranteed MSL1 reflow rating, −40°C to +125°C operation, no phase reversal behavior, and validated long-term drift (<0.5 µV over 10,000 hours) - critical for calibration-stable measurement systems requiring minimal maintenance.
Technical Context
The ADA4077-2BRZ implements a sixth-generation precision op amp architecture derived from the OP07 lineage, featuring proprietary bipolar process technology that achieves ultra-low input bias current (±1 nA max) while maintaining insensitivity to temperature-induced drift up to +125°C. Its input stage avoids JFET limitations, delivering stable CMRR (>122 dB) and PSRR (>123 dB) across ±5 V to ±15 V supplies.
This dual amplifier operates unity-gain stable with >55° phase margin and drives >1000 pF capacitive loads without external compensation. Its rail-to-rail output swing (±3.2 V min at ±5 V, ±13.2 V min at ±15 V) and absence of phase reversal under overvoltage conditions enable robust interfacing with ADC drivers and bridge sensor circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 25 µV maximum at 25°C (B grade, SOIC); ensures <0.001% gain error in 10 V full-scale precision measurement paths |
| Offset Drift | 0.25 µV/°C maximum; contributes <0.3 µV error over 100°C ambient shift - negligible vs. 25 µV initial spec |
| Voltage Noise Density | 6.9 nV/√Hz at 1 kHz; enables sub-µV resolution in 10 Hz–10 kHz sensor bandwidths without dominant noise contribution |
| Gain Bandwidth Product | 3.9 MHz; supports stable closed-loop gains up to ~100× at 39 kHz or unity gain at 3.9 MHz for anti-aliasing filter design |
| Supply Current | 400 µA per amplifier typical; allows dual-channel precision amplification within 1 mW total power budget at ±5 V |
| CMRR / PSRR | >122 dB / >123 dB minimum; rejects >1 million:1 common-mode or supply ripple - essential for battery-powered or noisy industrial rails |
| Operating Temperature | −40°C to +125°C; qualified for extended industrial environments including motor control enclosures and outdoor process nodes |
Pinout & Package
ADA4077-2BRZ is housed in an 8-lead SOIC (R-8) package with standard JEDEC outline, MSL1 reflow rating, and 158°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of ±10 mA drive into 2 kΩ load with <3.2 V headroom from rails at ±5 V |
| 2 | −IN A | Inverting input for Channel A; differential input voltage range extends to ±VSY with internal clamp diodes |
| 3 | +IN A | Noninverting input for Channel A; common-mode range −3.8 V to +3 V (±5 V supply) |
| 4 | V− | Negative supply rail connection; must be decoupled locally with ≥0.1 µF ceramic capacitor |
| 5 | +IN B | Noninverting input for Channel B; electrically isolated from Channel A with −125 dB channel separation at 1 kHz |
| 6 | −IN B | Inverting input for Channel B; matched input capacitance (5 pF common-mode) to Channel A for balanced layout |
| 7 | OUT B | Amplifier B output; independent output stage with same drive capability and settling performance as OUT A |
| 8 | V+ | Positive supply rail connection; shares thermal path with V−; requires symmetric bypassing for optimal PSRR |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Immune to polarity inversion even when inputs exceed supply rails - eliminates latch-up risk in overvoltage sensor interfaces |
| MSL1 reflow rating | Rated for peak reflow temperatures up to 260°C per IPC/JEDEC J-STD-020 - compatible with lead-free assembly without popcorn cracking |
| Long-term offset stability | 0.5 µV typical drift over 10,000 hours - reduces recalibration frequency in field-deployed instrumentation |
| Temperature hysteresis | 1 µV typical after full −40°C ↔ +125°C ↔ 25°C cycling - ensures repeatable zero-point accuracy across thermal cycles |
| Capacitive load drive | Stable with >1000 pF output capacitance - eliminates need for isolation resistors in ADC input buffering |
Applications
| RTD Sensor Front-End | Precision Current Source Control |
|---|---|
|
Use Scenario: Amplifying low-level differential voltage from a 3-wire Pt100 RTD bridge excited by a 2.5 V reference in HVAC or process control transmitters. IC Role / Device Role / Timing Role: Dual-channel precision instrumentation amplifier - one channel for bridge excitation regulation, the other for differential sensing with gain = 100. Use Value: 25 µV offset and 0.25 µV/°C drift limit temperature error to <0.05°C over 0–100°C range; 400 µA supply current minimizes self-heating in RTD element. |
Use Scenario: Closed-loop control of a high-side MOSFET current source delivering 0–100 mA to optical laser diodes in telecom modules. IC Role / Device Role / Timing Role: Dual op amp configured as precision I-to-V converter (Channel A) and feedback error amplifier (Channel B). Use Value: >122 dB CMRR rejects supply ripple on sense resistor; 6.9 nV/√Hz noise prevents current noise from dominating laser bias stability. |
| High-Stability Reference Buffer | Low-Drift Precision Filter Stage |
|
Use Scenario: Buffering a buried-zener voltage reference (e.g., ADR4540) in metrology-grade multimeters where output impedance must remain <1 Ω up to 10 kHz. IC Role / Device Role / Timing Role: Unity-gain stable voltage follower with ultra-low input bias current (1 nA max) to prevent reference loading. Use Value: Input resistance >70 GΩ and 0.5 µV/10,000 hr drift preserve reference accuracy over product lifetime; MSL1 rating ensures reliability after reflow. |
Use Scenario: Second-order active low-pass filtering (10 Hz cutoff) in seismic sensor signal chains requiring flat group delay and minimal DC offset accumulation. IC Role / Device Role / Timing Role: Dual op amp implementing Sallen-Key topology - one for gain stage, one for buffer/output isolation. Use Value: 3.9 MHz GBP enables precise pole placement; 0.25 µV p-p 0.1–10 Hz noise avoids contaminating sub-Hz seismic signals; no phase reversal prevents instability during transient overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP2177ARZ | Higher offset (60 µV max), higher drift (1.2 µV/°C), lower GBP (1.3 MHz), no MSL1 rating | Not suitable for extended temperature or high-reliability reflow environments; limited bandwidth restricts filter use | Select ADA4077-2BRZ when MSL1, <0.3 µV/°C drift, or >3 MHz bandwidth is required |
| AD8677ARZ | Lower noise (4.8 nV/√Hz), but higher offset (75 µV max), no specified long-term drift or hysteresis data | Preferred for ultra-low-noise AC-coupled apps; less suitable for DC-critical calibration systems needing proven 10k-hr stability | Select ADA4077-2BRZ when guaranteed long-term drift (<0.5 µV) and hysteresis (1 µV) are mandatory |
Compared with OP2177ARZ and AD8677ARZ, the ADA4077-2BRZ uniquely combines B-grade precision (25 µV offset), industry-leading drift (0.25 µV/°C), MSL1 reflow compliance, and documented 10,000-hour stability - making it the only dual op amp qualified for unattended, calibration-critical industrial deployments over 10+ years.
Availability
ADA4077-2BRZ is available at Aetrix Electronics and suitable for RTD sensor front-ends, precision current source control, and high-stability reference buffering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4077-2BRZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA, with design centers worldwide.
The ADA4077 family represents Analog Devices' sixth-generation evolution of the OP07 precision op amp platform, engineered specifically for calibration-stable, low-power, high-reliability measurement systems operating from −40°C to +125°C.
FAQ
What is the maximum offset voltage specification for ADA4077-2BRZ at 25°C?
The ADA4077-2BRZ is a B-grade device with a maximum offset voltage of 25 µV at 25°C, as specified in Table 2 of the Rev. F datasheet under ±5 V supply conditions. This value is guaranteed across the full −40°C to +125°C operating range up to 65 µV, ensuring predictable DC accuracy in precision sensor interfaces.
Does ADA4077-2BRZ support dual-supply operation, and what are the valid voltage ranges?
Yes, ADA4077-2BRZ supports true dual-supply operation from ±2.5 V to ±15 V, with full specifications guaranteed at ±5 V and ±15 V. The absolute maximum supply rating is 36 V, and the device remains functional down to ±2.5 V - enabling low-power portable instrumentation and compatibility with legacy ±12 V or ±15 V industrial rails.
Is ADA4077-2BRZ susceptible to phase reversal when input voltages exceed the supply rails?
No, ADA4077-2BRZ is explicitly designed to be immune to phase reversal, even when input voltages exceed the positive or negative supply rails. This behavior is confirmed in the Applications Information section (page 22) and eliminates risk of system lockup or damage in overvoltage sensor scenarios - a key differentiator versus legacy precision op amps.
What is the long-term offset voltage drift of ADA4077-2BRZ, and how was it measured?
ADA4077-2BRZ exhibits a typical long-term offset drift of 0.5 µV over 10,000 hours (≈13 months), measured per Analog Devices' high-precision test methodology using soldered FR4 PCBs and ultrastable oil-bath thermal control. This value is documented in Figure 71 and confirms exceptional aging stability for calibration-critical applications.
What package type and footprint does ADA4077-2BRZ use, and is it RoHS compliant?
ADA4077-2BRZ uses an 8-lead SOIC_N (narrow-body) package designated R-8 per the Ordering Guide, with standard JEDEC MS-012AC outline. It carries Analog Devices' standard RoHS-compliant, lead-free finish and is rated MSL1 per IPC/JEDEC J-STD-020 - fully compatible with modern lead-free reflow processes.
ADA4077-2BRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 1.2V/µs
- Gain Bandwidth Product:
- 3.6 MHz
- -3db Bandwidth:
- 5.5 MHz
- Current - Input Bias:
- 400 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 400µA (x2 Channels)
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADA4077-2BRZ FAQ
1.How can I place an order for ADA4077-2BRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4077-2BRZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADA4077-2BRZ reliable?
The price and inventory of ADA4077-2BRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4077-2BRZ is usually 5 days.
3.What payment methods are accepted for ADA4077-2BRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4077-2BRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4077-2BRZ?
ADA4077-2BRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4077-2BRZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADA4077-2BRZ?
For technical support, including ADA4077-2BRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4077-2BRZ requirements.
6.How does Aetrix verify that ADA4077-2BRZ is sourced from the original manufacturer or authorized distributors?
All ADA4077-2BRZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADA4077-2BRZ meets industry standards.
7.What is the process for return or replacement of ADA4077-2BRZ?
All ADA4077-2BRZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4077-2BRZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADA4077-2BRZ part is unused and in its original packaging.
Return procedure for ADA4077-2BRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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