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Analog Devices Inc. AD8207WBRZ-R7
- Part No.:
- AD8207WBRZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8207WBRZ-R7.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,143
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Product details
Overview
AD8207WBRZ-R7 from Analog Devices is a zero-drift, high-voltage bidirectional difference amplifier optimized for precision current shunt sensing in automotive motor and solenoid control. It delivers 20 V/V gain, −4 V to +65 V common-mode input range (at 5 V supply), <500 nV/°C offset drift, and operates from −40°C to +125°C in an 8-lead SOIC_N package.
For engineers reviewing the AD8207WBRZ-R7 datasheet, AD8207WBRZ-R7 pinout, AD8207WBRZ-R7 application, or AD8207WBRZ-R7 equivalent, key selection criteria include its PWM-tolerant common-mode rejection, dual-reference output offset flexibility, bidirectional current measurement capability, and AEC-Q100 qualified automotive reliability.
Technical Context
The AD8207WBRZ-R7 employs a zero-drift architecture with internal precision resistor network and dedicated common-mode control amplifier to maintain stable input common-mode voltage at ~3.5 V (with 5 V supply), enabling robust operation under fast-changing PWM transients up to 1 V/ns. Its 150 kHz bandwidth supports real-time current sampling in motor phase control loops.
It features two independent reference pins (VREF1, VREF2) tied via 100 kΩ trimmed resistors to the main amplifier's positive input, allowing ratiometric or externally referenced output offset adjustment - supporting unidirectional (ground- or V+-referenced) and bidirectional (midscale or asymmetric) configurations without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V ±0.3% over temperature - enables direct scaling of shunt voltage to measurable output without external gain stages. |
| Input CM Range | −4 V to +65 V (5 V supply); −4 V to +35 V (3.3 V supply) - supports high-side sensing across battery, load, and clamp diode voltage swings in solenoid/motor circuits. |
| Offset Drift | ±1 μV/°C max; <500 nV/°C typical - minimizes thermal-induced measurement error in engine bay or powertrain environments. |
| CMRR | ≥90 dB dc to 10 kHz - maintains accuracy despite high dv/dt common-mode noise from PWM switching. |
| Supply Range | 3.3 V to 5.5 V - compatible with both 3.3 V microcontroller I/O and legacy 5 V automotive systems. |
| Bandwidth | 150 kHz small-signal −3 dB - captures transient current events in H-bridge commutation and fault detection. |
| Operating Temp | −40°C to +125°C - meets extended temperature requirements for under-hood automotive electronics. |
Pinout & Package
AD8207WBRZ-R7 is housed in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, with 1.27 mm lead pitch and narrow body profile suitable for automated PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Negative Input | Connects to low side of shunt resistor; differential input node for current polarity detection. |
| 2 (GND) | Ground Reference | System ground return for supply and output; not used as current sense reference point. |
| 3 (VREF2) | Reference Input | One of two matched inputs for setting output offset voltage; must be driven by low-impedance source. |
| 4 (RANGE) | Supply Range Select | Logic-low = 4.5–5.5 V mode (−4 V to +65 V CMR); logic-high = 3.3–4.5 V mode (−4 V to +35 V CMR). |
| 5 (OUT) | Analog Output | Single-ended voltage output scaled to 20× differential input; drives ADC inputs directly. |
| 6 (V+) | Positive Supply | 3.3 V or 5 V single supply input; powers internal zero-drift core and reference circuitry. |
| 7 (VREF1) | Reference Input | Second matched reference input; functionally identical to VREF2; used together for offset control. |
| 8 (+IN) | Positive Input | Connects to high side of shunt resistor; completes differential pair for bidirectional current direction resolution. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Delivers <500 nV/°C offset drift and <10 ppm/°C gain drift - eliminates calibration over temperature in production ECUs. |
| Dual reference pins (VREF1/VREF2) | Enable flexible output offset: ground-referenced (unidirectional), V+-referenced (diagnostic-ready), or midscale (bidirectional) - no external resistors needed. |
| PWM-tolerant common-mode rejection | Rejects fast dv/dt transients up to 1 V/ns while maintaining >90 dB CMRR - critical for accurate current sampling during MOSFET switching. |
| Automotive qualification | AEC-Q100 Grade 0 qualified (−40°C to +125°C) with controlled manufacturing - approved for safety-critical motor and solenoid control in ADAS and powertrain systems. |
| Survival rating | Withstands −25 V to +75 V continuous input and −30 V to +80 V transient - protects against load dump, reverse battery, and inductive kickback. |
Applications
| Motor Control | Solenoid Control |
|---|---|
Use Scenario: Real-time phase current monitoring in 3-phase BLDC motor drives for field-oriented control and overcurrent protection. IC Role / Device Role / Timing Role: High-side bidirectional difference amplifier measuring shunt voltage with 150 kHz bandwidth and midscale output offset. Use Value: Enables precise torque regulation and fault detection without ground reference instability, even during rapid PWM transitions. | Use Scenario: High-side current sensing in diesel fuel injector or hydraulic valve solenoids with low-side PWM switching. IC Role / Device Role / Timing Role: Bidirectional amplifier capturing full recirculation current and detecting shorts-to-ground during switch-off intervals. Use Value: Improves diagnostic coverage and extends solenoid lifetime by eliminating measurement blind spots during inductive flyback. |
| Engine Management | Electric Power Steering |
Use Scenario: Cylinder-specific current monitoring of ignition coils and variable valve actuators in ICE engine control units. IC Role / Device Role / Timing Role: High-voltage difference amplifier operating from −4 V to +65 V common-mode range with 5 V supply. Use Value: Supports robust coil driver diagnostics and adaptive timing control under wide battery voltage and EMI conditions. | Use Scenario: Torque motor current feedback in EPS column-assist systems requiring fail-safe bidirectional sensing. IC Role / Device Role / Timing Role: AEC-Q100 qualified amplifier delivering <1 μV/°C drift and ratiometric output offset for ASIL-B compliance. Use Value: Ensures accurate assist torque delivery across ambient temperatures while meeting functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage bidirectional current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | 20 V/V gain, −4 V to +80 V CMR, 100 kHz bandwidth, 0.1 µV/°C offset drift - higher CMR but lower bandwidth and no dual-reference offset flexibility. | Preferred for ultra-high common-mode applications (e.g., 48 V systems), but lacks midscale offset configuration without external resistors. | Select when extended −4 V to +80 V survival is required and 100 kHz bandwidth suffices; verify layout for EMI immunity at higher CMR. |
| MAX40056ATA+T | 20 V/V gain, −5 V to +65 V CMR, 250 kHz bandwidth, 1.5 µV/°C max drift - wider bandwidth but higher drift and no VREF1/VREF2 offset control. | Better suited for high-speed motor control where bandwidth >150 kHz is critical, but requires external offset circuitry for bidirectional operation. | Choose when faster transient response is mandatory and system-level calibration compensates for higher drift; confirm AEC-Q100 status for automotive use. |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, AD8207WBRZ-R7 uniquely combines dual-reference programmable offset, 150 kHz bandwidth, sub-1 µV/°C drift, and AEC-Q100 qualification in a single SOIC package - making it optimal for cost-sensitive, thermally demanding automotive current sensing where design simplicity and diagnostic flexibility are prioritized.
Availability
AD8207WBRZ-R7 is available at Aetrix Electronics and suitable for motor control, solenoid actuation, and engine management systems requiring stable component supply, automotive-grade reliability, and long-term production continuity.
Supply support for AD8207WBRZ-R7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The AD8207WBRZ-R7 belongs to Analog Devices' precision current sensing amplifier product line, designed specifically for robust, high-accuracy bidirectional current measurement in automotive powertrain and chassis control systems.
FAQ
What is the maximum common-mode voltage the AD8207WBRZ-R7 can handle continuously?
The AD8207WBRZ-R7 supports continuous input common-mode voltages from −4 V to +65 V when operated with a 5 V supply and RANGE pin tied to GND. With a 3.3 V supply and RANGE pin tied to V+, the continuous range is −4 V to +35 V. Its absolute maximum survival rating is −25 V to +75 V, verified per Analog Devices' Absolute Maximum Ratings table.
How does the RANGE pin affect AD8207WBRZ-R7 operation?
The RANGE pin on the AD8207WBRZ-R7 selects the supply voltage operating mode: logic-low (GND) enables 4.5–5.5 V operation with −4 V to +65 V common-mode range; logic-high (V+) enables 3.3–4.5 V operation with −4 V to +35 V common-mode range. This pin directly configures internal biasing and must be set before power-up to ensure specified performance.
Can AD8207WBRZ-R7 measure bidirectional current without external components?
Yes. The AD8207WBRZ-R7 achieves true bidirectional current measurement using only its internal VREF1 and VREF2 pins: tying VREF1 to V+ and VREF2 to GND sets the output to V+/2 at zero differential input, providing symmetrical ±250 mV (5 V supply) or ±165 mV (3.3 V supply) output swing - no external resistors or references required.
Is AD8207WBRZ-R7 qualified for automotive applications?
Yes. The AD8207WBRZ-R7 is explicitly qualified for automotive applications per AEC-Q100 Grade 0 (−40°C to +125°C), with controlled manufacturing, extended reliability testing, and automotive-specific documentation. The "W" in the part number denotes automotive qualification, and the device is listed in Analog Devices' Automotive Products section.
What is the typical offset drift performance of AD8207WBRZ-R7 over temperature?
The AD8207WBRZ-R7 exhibits typical input offset drift of <500 nV/°C and a maximum specification of ±1 μV/°C over −40°C to +125°C. This performance is achieved through its proprietary zero-drift architecture and is confirmed in Figure 3 of the datasheet, ensuring minimal measurement error drift across full automotive operating temperature ranges.
AD8207WBRZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 150 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 2.5mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3.3 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8207WBRZ-R7 FAQ
1.How can I place an order for AD8207WBRZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8207WBRZ-R7 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 AD8207WBRZ-R7 reliable?
The price and inventory of AD8207WBRZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8207WBRZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8207WBRZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8207WBRZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8207WBRZ-R7?
AD8207WBRZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8207WBRZ-R7 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 AD8207WBRZ-R7?
For technical support, including AD8207WBRZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8207WBRZ-R7 requirements.
6.How does Aetrix verify that AD8207WBRZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8207WBRZ-R7 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 AD8207WBRZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8207WBRZ-R7?
All AD8207WBRZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8207WBRZ-R7, 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 AD8207WBRZ-R7 part is unused and in its original packaging.
Return procedure for AD8207WBRZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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