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Analog Devices Inc. AD8417WBRMZ
- Part No.:
- AD8417WBRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8417WBRMZ.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:644
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Product details
Overview
AD8417WBRMZ from Analog Devices is a bidirectional, zero-drift current sense amplifier optimized for high-side and low-side shunt-based current measurement in automotive motor and solenoid control systems. It delivers 60 V/V fixed gain, ±400 µV max input offset over −40°C to +125°C, 86 dB CMRR (dc–10 kHz), and operates from −2 V to +70 V common-mode input range with 2.7 V to 5.5 V supply. Its EMI-filtered inputs and patented PWM rejection enable accurate sensing in noisy H-bridge and PWM-driven loads.
For engineers reviewing the AD8417WBRMZ datasheet, AD8417WBRMZ pinout, AD8417WBRMZ application, or AD8417WBRMZ equivalent, this page provides verified specifications, FMEA-tolerant 10-lead MSOP package details, bidirectional output configuration guidance, and AEC-Q100-compliant automotive use cases - all grounded in Rev. E datasheet parameters and Analog Devices' official characterization.
Technical Context
The AD8417WBRMZ employs a zero-drift chopper-stabilized architecture achieving 0.1 µV/°C typical offset drift and <±0.3% gain error across temperature. Its differential input stage rejects fast-rising common-mode transients up to 1 V/ns using patented circuitry (U.S. Patent 8,624,668 B2), enabling stable operation under PWM switching in motor phases.
It supports flexible output referencing via dual VREF pins: ratiometric mid-scale offset (VS/2) when split between VS and GND, external reference injection, or unidirectional rail-saturation modes. The buffered output drives 25 kΩ loads with 1 V/µs slew rate and 250 kHz small-signal bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 60 V/V fixed - enables direct scaling of shunt voltage to measurable analog output without external gain stages. |
| Input Offset Voltage (max) | ±400 µV over −40°C to +125°C - ensures ≤6.7 mV total output error at full-scale 50 A (with 10 mΩ shunt), critical for precision torque control. |
| Common-Mode Range | −2 V to +70 V continuous - supports high-side sensing in 12 V/24 V automotive systems with battery transients and inductive kickback. |
| CMRR | 86 dB (dc–10 kHz) - maintains accuracy despite ground bounce and PWM noise coupling into shunt measurement paths. |
| Supply Range | 2.7 V to 5.5 V - compatible with standard 3.3 V or 5 V microcontroller ADC references and logic domains. |
| Bandwidth | 250 kHz - captures fast current transients during motor commutation and solenoid turn-on/turn-off events. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C) - qualified for engine bay and transmission control unit environments per automotive reliability standards. |
Pinout & Package
AD8417WBRMZ is housed in a 10-lead MSOP (RM-10) package, designed for failure mode and effects analysis (FMEA) compliance. It features strategically placed NC pins isolating high-voltage inputs (−IN, +IN) from adjacent GND, VREF2, VREF1, and VS to mitigate PCB short-fault risks in safety-critical automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −IN | Negative input terminal for differential shunt voltage sensing; rated for −2 V to +70 V common-mode. |
| 2 | NC | No-connect pin; electrically isolated to prevent fault propagation between −IN and GND in case of solder bridge. |
| 3 | GND | Analog ground reference; internal bias node for amplifier core and EMI filters. |
| 4 | VREF2 | Reference input 2; used with VREF1 to set output offset voltage (e.g., VS/2 for bidirectional operation). |
| 5 | NC | No-connect pin; isolates VREF2 from OUT to avoid reference corruption during output transient events. |
| 6 | OUT | Buffered voltage output; rail-to-rail capable (0.045 V to VS − 0.035 V), drives 25 kΩ loads directly. |
| 7 | VS | Positive supply input; accepts 2.7 V to 5.5 V; includes internal EMI filtering. |
| 8 | VREF1 | Reference input 1; functionally identical to VREF2; paired for ratiometric or external reference configurations. |
| 9 | NC | No-connect pin; isolates VREF1 from +IN to maintain input integrity under fault conditions. |
| 10 | +IN | Positive input terminal for differential shunt voltage sensing; rated for −2 V to +70 V common-mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional current sensing | Configurable output offset via VREF1/VREF2 allows symmetric ±50 A measurement with single 10 mΩ shunt and 3.3 V ADC. |
| PWM common-mode rejection | Patented architecture suppresses errors from 1 V/ns input transients - essential for accurate phase current sampling in 3-phase inverters. |
| FMEA-tolerant 10-lead MSOP | NC pins between critical terminals reduce risk of catastrophic failure from adjacent-pin shorts on PCBs per ISO 26262 ASIL-B requirements. |
| Zero-drift performance | 0.1 µV/°C typical offset drift minimizes thermal-induced measurement drift in under-hood environments without calibration. |
| Integrated EMI filters | On-chip RC filtering on VS, +IN, and −IN pins reduces susceptibility to radiated RF noise in motor drive enclosures. |
Applications
| Motor Phase Current Monitoring | Solenoid Diagnostic Protection |
|---|---|
|
Use Scenario: Real-time current sampling in each leg of a 3-phase BLDC motor inverter during PWM commutation cycles. IC Role / Device Role / Timing Role: High-side current sense amplifier providing ground-referenced analog output synchronized to gate driver timing for closed-loop torque control. Use Value: 250 kHz bandwidth captures instantaneous current peaks; 86 dB CMRR rejects noise from adjacent switching phases; ±400 µV offset ensures <1% full-scale error at 25°C–125°C. |
Use Scenario: Monitoring coil current in automotive fuel injectors or transmission shift solenoids to detect open/short faults and recirculation anomalies. IC Role / Device Role / Timing Role: Bidirectional shunt amplifier with configurable output offset, enabling detection of both energizing and flyback current flow in a single device. Use Value: −2 V to +70 V common-mode range tolerates clamp diode reverse recovery; FMEA pinout prevents single-point failure from PCB shorts during field operation. |
| H-Bridge Bidirectional Control | High-Rail Battery Current Sensing |
|
Use Scenario: Measuring bidirectional current through a center-shunt in an H-bridge driving reversible DC motors (e.g., power seats, HVAC actuators). IC Role / Device Role / Timing Role: Differential amplifier referenced to VS/2, delivering linear output centered at 2.5 V for ±25 A full-scale range with 3.3 V ADC. Use Value: Zero-drift architecture maintains offset stability across temperature swings; 60 V/V gain eliminates need for external instrumentation amplifier stages. |
Use Scenario: Monitoring total battery discharge current in 12 V start-stop systems, including cranking surges and regenerative braking return paths. IC Role / Device Role / Timing Role: High-side current sense amplifier converting battery-referenced shunt voltage to ground-referenced output for MCU ADC input. Use Value: +70 V survival rating handles load-dump transients; 2.7 V min supply supports operation during brownout; AEC-Q100 qualification ensures long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8418ARMZ | 20 V/V gain, ±150 µV max offset, 8-lead MSOP, same AEC-Q100 Grade 1 rating. | Lower gain requires larger shunt or post-amplification for same resolution; better offset spec but narrower dynamic range per volt. | Select AD8418ARMZ when system-level gain budget allows higher shunt resistance or when ultra-low offset dominates over bandwidth needs. |
| INA240A1QDRQ1 | Texas Instruments part: 20 V/V gain, −5 V to +85 V common-mode, 120 kHz bandwidth, SOIC-8 package. | Wider common-mode range suits 48 V mild-hybrid systems; lower bandwidth limits high-speed motor control; no FMEA-optimized pinout. | Choose INA240A1QDRQ1 for 48 V architectures requiring extended voltage tolerance, accepting trade-offs in speed and fault resilience. |
Compared with AD8417WBRMZ, AD8418ARMZ offers tighter offset but halves signal resolution per shunt volt; INA240A1QDRQ1 extends voltage range for next-gen platforms but sacrifices bandwidth and lacks FMEA-specific layout hardening - making AD8417WBRMZ optimal for 12/24 V AEC-Q100 motor control where speed, accuracy, and fault containment are jointly critical.
Availability
AD8417WBRMZ is available at Aetrix Electronics and suitable for automotive motor control, solenoid diagnostic protection, and high-rail battery monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8417WBRMZ 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 automotive, industrial, communications, and healthcare markets with precision signal chain solutions.
The AD8417WBRMZ belongs to Analog Devices' high-voltage current sense amplifier product line, engineered specifically for AEC-Q100-compliant automotive subsystems demanding robustness against PWM noise, wide common-mode operation, and zero-drift accuracy in harsh thermal environments.
FAQ
What is the operating temperature range for AD8417WBRMZ?
The AD8417WBRMZ is rated for −40°C to +125°C operating temperature, meeting AEC-Q100 Grade 1 requirements. This range is validated across all electrical specifications including gain error (±0.3%), offset voltage (±400 µV), and CMRR (86 dB dc–10 kHz), ensuring reliable performance in engine compartment and transmission control applications where ambient temperatures exceed 105°C.
Does AD8417WBRMZ support bidirectional current measurement?
Yes, AD8417WBRMZ natively supports bidirectional current measurement via its dual VREF1/VREF2 pins. Applying VS to one pin and GND to the other sets the output to VS/2 at zero differential input - enabling symmetric ±50 A measurement with a 10 mΩ shunt and 3.3 V ADC. This configuration is explicitly detailed in the "Bidirectional Operation" section of the Rev. E datasheet.
What package type is used for AD8417WBRMZ?
AD8417WBRMZ uses a 10-lead MSOP (RM-10) package, distinct from the 8-lead variants (AD8417WB). This FMEA-optimized layout inserts NC pins between −IN/GND and +IN/VREF1 to isolate high-voltage inputs, reducing risk of single-point failure from PCB solder bridges - a requirement for ASIL-B functional safety compliance in automotive designs.
How does AD8417WBRMZ handle PWM common-mode noise?
AD8417WBRMZ incorporates patented circuitry (U.S. Patent 8,624,668 B2) that actively rejects fast-rising common-mode transients up to 1 V/ns. This enables accurate current sensing during PWM switching in motor phases and solenoid drivers, maintaining 86 dB CMRR from dc to 10 kHz even when input common-mode voltage swings between −2 V and +70 V - a capability confirmed in Figure 19 (common-mode step response) of the datasheet.
Is AD8417WBRMZ pin-compatible with other AD8417 variants?
No, AD8417WBRMZ is not pin-compatible with 8-lead AD8417WB or AD8417B variants due to its unique 10-lead MSOP footprint and FMEA-optimized pinout (e.g., NC pins at positions 2, 5, and 9). The 10-lead configuration requires dedicated PCB layout; migration from 8-lead versions necessitates board revision and validation per ISO 26262 hardware integration requirements.
AD8417WBRMZ 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:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 250 kHz
- Current - Input Bias:
- 130 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 4.1mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 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-MSOP
AD8417WBRMZ FAQ
1.How can I place an order for AD8417WBRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8417WBRMZ 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 AD8417WBRMZ reliable?
The price and inventory of AD8417WBRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8417WBRMZ is usually 5 days.
3.What payment methods are accepted for AD8417WBRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8417WBRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8417WBRMZ?
AD8417WBRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8417WBRMZ 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 AD8417WBRMZ?
For technical support, including AD8417WBRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8417WBRMZ requirements.
6.How does Aetrix verify that AD8417WBRMZ is sourced from the original manufacturer or authorized distributors?
All AD8417WBRMZ 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 AD8417WBRMZ meets industry standards.
7.What is the process for return or replacement of AD8417WBRMZ?
All AD8417WBRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8417WBRMZ, 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 AD8417WBRMZ part is unused and in its original packaging.
Return procedure for AD8417WBRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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