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Analog Devices Inc. AD8676BRMZ
- Part No.:
- AD8676BRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8676BRMZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,809
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Product details
Overview
AD8676BRMZ from Analog Devices is an ultraprecision dual rail-to-rail output operational amplifier optimized for high-accuracy signal conditioning in ±5 V to ±15 V systems. It delivers 2.8 nV/√Hz voltage noise at 1 kHz, 12 μV typical input offset voltage, and 10 MHz gain bandwidth-enabling low-noise, high-fidelity amplification in precision instrumentation and sensor front-ends.
For engineers reviewing the AD8676BRMZ datasheet, AD8676BRMZ pinout, AD8676BRMZ application, or AD8676BRMZ equivalent, key selection criteria include its 0.2 μV/°C max offset drift, rail-to-rail output swing into 2 kΩ loads, low 2.5 mA/amplifier supply current, and MSOP-8 packaging suitable for space-constrained industrial and medical PCB layouts.
Technical Context
The AD8676BRMZ employs a proprietary bipolar input stage delivering ultralow voltage noise (2.8 nV/√Hz) while maintaining low input bias current (±2 nA max) and exceptional dc precision. Its architecture supports stable operation with capacitive loads up to 35 pF and achieves >55° phase margin in unity-gain configurations.
Designed for extended industrial temperature range (−40°C to +125°C), the device features matched dual amplifiers with tightly controlled offset voltage drift (0.2 μV/°C typ) and CMRR of 130 dB at 25°C-critical for differential sensing and closed-loop control where common-mode rejection directly impacts measurement integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 2.8 nV/√Hz @ 1 kHz - enables sub-μV-level signal resolution in low-frequency precision measurement paths |
| Input Offset Voltage | 12 μV typical (B grade, MSOP) - reduces initial error in strain gage or thermocouple amplifiers without trimming |
| Offset Drift | 0.2 μV/°C typical - ensures <1 μV total drift over 0–70°C ambient, critical for uncalibrated field instruments |
| Gain Bandwidth Product | 10 MHz - supports stable closed-loop gain ≥100 at 100 kHz for anti-aliasing and active filter stages |
| Rail-to-Rail Output Swing | +4.95 V / −4.98 V @ ±5 V supply, RL = 10 kΩ - maximizes dynamic range in single-supply-compatible designs |
| Supply Current | 2.5 mA per amplifier @ ±5 V - allows dual-channel precision amplification within 5 mA total budget |
| CMRR | 130 dB @ 25°C - rejects power supply and EMI-induced common-mode interference in noisy industrial environments |
Pinout & Package
AD8676BRMZ is housed in an 8-lead Mini Small Outline Package (MSOP, RM-8), RoHS-compliant, with exposed pad not electrically connected. Package dimensions: 3.00 mm × 3.00 mm × 0.85 mm (JEDEC MO-187-AA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback network or load; rail-to-rail swing supports full supply utilization |
| 2 | –IN A | Inverting input of Amplifier A - high-impedance node; requires matched trace routing to minimize offset error |
| 3 | +IN A | Non-inverting input of Amplifier A - referenced to system ground or bias network; low input bias current minimizes resistor-induced errors |
| 4 | V– | Negative supply rail - must be decoupled with 0.1 μF ceramic capacitor placed ≤2 mm from pin |
| 5 | +IN B | Non-inverting input of Amplifier B - independent channel; identical specs enable matched dual-sensor conditioning |
| 6 | –IN B | Inverting input of Amplifier B - pin-compatible with Amplifier A; supports interleaved layout for thermal symmetry |
| 7 | OUT B | Amplifier B output - electrically isolated from OUT A; enables dual-path signal processing on shared substrate |
| 8 | V+ | Positive supply rail - accepts ±5 V to ±15 V; PSRR of 120 dB suppresses supply ripple in sensitive analog chains |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow voltage noise | 2.8 nV/√Hz @ 1 kHz - preserves SNR in low-level sensor interfaces (e.g., thermopiles, piezoresistive elements) |
| Rail-to-rail output | Swings within 10 mV of rails @ ±5 V - eliminates need for level-shifting in ADC driver stages |
| Low input bias current | ±2 nA max - enables high-Z source compatibility (e.g., pH electrodes, photodiode transimpedance) |
| High open-loop gain | 120 dB min - ensures <0.001% gain error in 100× closed-loop configurations |
| Extended temperature range | −40°C to +125°C - qualified for under-hood automotive and industrial motor control applications |
Applications
| Strain Gage Amplifiers | Laser Diode Control Loops |
|---|---|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from metal foil or semiconductor strain gages in load cells and pressure sensors. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier in the first gain stage, providing low-noise, low-drift amplification before ADC conversion. Use Value: 12 μV typical offset and 0.2 μV/°C drift eliminate calibration drift over temperature; 2.8 nV/√Hz noise prevents degradation of bridge resolution below 0.01% FS. |
Use Scenario: Regulating laser diode current via feedback from a monitor photodiode in optical transceivers and spectroscopy modules. IC Role / Device Role / Timing Role: Transimpedance amplifier and error amplifier in the outer current-control loop, requiring fast settling and low drift. Use Value: 10 MHz bandwidth enables stable loop response up to 100 kHz; rail-to-rail output drives MOSFET gate directly without level shifters. |
| Thermocouple Amplifiers | Medical Instrumentation |
Use Scenario: Cold-junction compensation and amplification of Type K/J thermocouple outputs in industrial ovens and HVAC controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end, rejecting thermocouple lead noise and reference junction errors. Use Value: 130 dB CMRR rejects common-mode noise from heater switching; 0.1 μV p-p (0.1–10 Hz) noise ensures <0.1°C resolution in 0–1000°C spans. |
Use Scenario: Biopotential signal conditioning in ECG/EEG front-ends and patient monitoring equipment requiring FDA-grade accuracy. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage for differential electrode signals prior to isolation and digitization. Use Value: 2 nA max input bias current prevents electrode polarization; −40°C to +125°C rating supports sterilization cycle survivability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8675ARMZ | Single-channel version; identical noise (2.8 nV/√Hz), offset (12 μV), and drift specs; same MSOP-8 package | Used when only one precision amplifier is needed-reduces board area and cost vs. dual-channel solution | Select AD8675ARMZ for space-constrained single-channel designs where channel matching is irrelevant |
| ADA4004-2ARMZ | Higher voltage noise (3.9 nV/√Hz), lower bandwidth (12 MHz), higher supply current (3.6 mA/amplifier); same MSOP-8 footprint | Suitable for less demanding precision applications where ultra-low noise is secondary to wider bandwidth or higher output drive | Choose ADA4004-2ARMZ if system requires >10 MHz closed-loop bandwidth and can tolerate 40% higher noise floor |
Compared with AD8676BRMZ, AD8675ARMZ offers identical precision in half the channel count and area, while ADA4004-2ARMZ trades 39% higher voltage noise for 20% greater bandwidth-making AD8676BRMZ optimal for DC-critical, low-frequency instrumentation where noise and drift dominate performance limits.
Availability
AD8676BRMZ is available at Aetrix Electronics and suitable for precision instrumentation, medical diagnostics, and industrial sensor conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8676BRMZ 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 Norwood, MA.
The AD867x series was developed specifically for ultraprecision DC-critical applications-including sensor signal chains, metrology, and medical instrumentation-where voltage noise, offset drift, and long-term stability outweigh raw speed requirements.
FAQ
What is the maximum supply voltage for AD8676BRMZ?
The AD8676BRMZ has an absolute maximum supply voltage rating of ±18 V. Operation is fully specified from ±5 V to ±15 V. Exceeding ±18 V risks permanent damage per Absolute Maximum Ratings table. For reliable long-term operation, Analog Devices recommends staying within ±15 V, where all electrical specifications-including 10 MHz bandwidth and 2.8 nV/√Hz noise-are guaranteed across −40°C to +125°C.
Does AD8676BRMZ support rail-to-rail input?
No, AD8676BRMZ does not support rail-to-rail input. Its input voltage range is specified as −3.0 V to +3.0 V with ±5 V supplies and −12.5 V to +12.5 V with ±15 V supplies-centered around ground. The device features rail-to-rail *output* swing only. Input common-mode range excludes the supply rails by ~1.5 V minimum, so external level-shifting or biasing is required for signals near V+ or V−.
What is the thermal resistance (θJA) of AD8676BRMZ in its MSOP-8 package?
The AD8676BRMZ in the 8-lead MSOP (RM-8) package has a junction-to-ambient thermal resistance (θJA) of 210°C/W, as specified in Table 5 of the Rev. C datasheet. This value assumes standard JEDEC 2S2P test board conditions. Actual θJA in end equipment depends on PCB copper area, airflow, and nearby heat sources-designers should verify junction temperature using ISY = 2.5 mA/amplifier and worst-case ambient to ensure <125°C operation.
Is AD8676BRMZ pin-compatible with AD8676ARZ?
Yes, AD8676BRMZ and AD8676ARZ share identical pinouts and electrical specifications-the only difference is package type (MSOP-8 vs. SOIC_N-8) and grade binning. Both use the same 8-pin configuration: OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+. Layouts designed for either part can accommodate the other with only footprint changes; no schematic or netlist modifications are required.
What is the typical input offset voltage drift of AD8676BRMZ over temperature?
The AD8676BRMZ has a typical input offset voltage drift of 0.2 μV/°C and a maximum of 0.6 μV/°C over the full −40°C to +125°C operating range. This drift specification applies to both B-grade MSOP and SOIC versions. At 0.2 μV/°C typical, total offset change across a 100°C span is just 20 μV-enabling high-accuracy measurements without periodic recalibration in stable thermal environments.
AD8676BRMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 12 µV
- Current - Supply:
- 2.7mA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
AD8676BRMZ FAQ
1.How can I place an order for AD8676BRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8676BRMZ 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 AD8676BRMZ reliable?
The price and inventory of AD8676BRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8676BRMZ is usually 5 days.
3.What payment methods are accepted for AD8676BRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8676BRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8676BRMZ?
AD8676BRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8676BRMZ 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 AD8676BRMZ?
For technical support, including AD8676BRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8676BRMZ requirements.
6.How does Aetrix verify that AD8676BRMZ is sourced from the original manufacturer or authorized distributors?
All AD8676BRMZ 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 AD8676BRMZ meets industry standards.
7.What is the process for return or replacement of AD8676BRMZ?
All AD8676BRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8676BRMZ, 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 AD8676BRMZ part is unused and in its original packaging.
Return procedure for AD8676BRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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