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Analog Devices Inc. AD8417BRMZ
- Part No.:
- AD8417BRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8417BRMZ.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,624
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Product details
Overview
AD8417BRMZ 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, −2 V to +70 V continuous common-mode input range, and 250 kHz bandwidth - enabling accurate real-time current monitoring under PWM-rich conditions.
For engineers reviewing the AD8417BRMZ datasheet, AD8417BRMZ pinout, AD8417BRMZ application, or AD8417BRMZ equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade performance specs (AEC-Q100), and two rigorously cross-checked alternative parts with documented functional and application-level differences.
Technical Context
The AD8417BRMZ implements a patented zero-drift difference amplifier architecture (U.S. Patent 8,624,668 B2) that maintains <0.4 µV/°C offset drift while sustaining 250 kHz bandwidth - eliminating trade-offs between precision and speed. Its EMI filters and PWM-tolerant input stage reject fast common-mode transients up to 1 V/ns, enabling stable operation in H-bridge and 3-phase inverter gate-drive environments.
It supports configurable unidirectional or bidirectional output offset via dual reference inputs (VREF1/VREF2), with ratiometric adjustment when splitting VS across them. The device operates from 2.7 V to 5.5 V and features 86 dB CMRR from dc to 10 kHz, ensuring accuracy despite ground bounce or supply ripple in noisy automotive power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 60 V/V fixed - enables direct interface to 12-bit+ ADCs with 50 mV shunt drop yielding 3 V full-scale output. |
| Input Offset Voltage (max) | ±400 µV over −40°C to +125°C - ensures ≤6.7 mV error at 60× gain, critical for <1% current measurement accuracy. |
| Common-Mode Range | −2 V to +70 V continuous - supports high-side sensing on 48 V battery rails and low-side sensing with negative flyback recovery. |
| Bandwidth | 250 kHz typical - captures fast current transients in BLDC commutation and PWM-controlled solenoids without phase lag. |
| CMRR | 86 dB (dc to 10 kHz) - rejects noise coupling from adjacent high-power switching nodes in compact PCB layouts. |
| Supply Range | 2.7 V to 5.5 V - compatible with standard 3.3 V or 5 V microcontroller I/O domains without level-shifting. |
| AEC-Q100 Grade | Qualified for automotive - meets stress test requirements for temperature cycling, HTOL, and ESD (±2 kV HBM). |
Pinout & Package
AD8417BRMZ is packaged in an 8-lead MSOP (RM-8) with exposed pad, measuring 3.0 mm × 3.0 mm × 0.85 mm. This RoHS-compliant package supports automated optical inspection and offers thermal resistance (θJA) of 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Negative Input | Connects to shunt resistor low-side; accepts common-mode voltages down to −2 V - enables true high-side sensing with negative rail tolerance. |
| 2 (GND) | Ground Reference | System ground return; isolated from power ground in split-supply configurations to avoid ground loop errors. |
| 3 (VREF2) | Reference Input 2 | Configurable bias node: tied to GND for unidirectional ground-referenced output, or to VS for high-side diagnostic mode. |
| 4 (NC) | No Connect | Internally unconnected; must remain floating - solder mask coverage recommended to prevent accidental shorts. |
| 5 (OUT) | Analog Output | Buffered voltage output (0.045 V to VS − 0.035 V); drives 25 kΩ loads directly - interfaces with SAR or sigma-delta ADCs without external op-amp. |
| 6 (VS) | Positive Supply | 2.7 V–5.5 V single supply; powers internal amplifiers and reference circuitry - decoupling capacitor (0.1 µF) required within 2 mm. |
| 7 (VREF1) | Reference Input 1 | Paired with VREF2 to set output offset: tied to VS for mid-scale bidirectional operation (VOUT = VS/2) with ratiometric stability. |
| 8 (+IN) | Positive Input | Connects to shunt resistor high-side; withstands +70 V common-mode - allows placement upstream of MOSFET switches in high-voltage motor phases. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional current sensing | Output swings symmetrically around user-set offset (e.g., VS/2), enabling precise measurement of forward/reverse motor currents without polarity reversal hardware. |
| Zero-drift core architecture | Typical 0.1 µV/°C offset drift - eliminates calibration drift over automotive temperature range, reducing system-level compensation complexity. |
| PWM common-mode rejection | Patented circuitry suppresses errors from fast dV/dt common-mode edges (up to 1 V/ns) - maintains accuracy during MOSFET switching transitions in inverters. |
| FMEA-tolerant pinout option | 10-lead MSOP variant includes NC pins isolating −IN/GND and +IN/VREF1 - prevents catastrophic failure from adjacent-pin solder bridges per ISO 26262 ASIL-B requirements. |
| EMI filtering integrated | On-chip RC filters on inputs reduce susceptibility to radiated RF noise (e.g., 100 MHz–1 GHz) without requiring external ferrites or capacitors. |
Applications
| Motor Control | Solenoid Control |
|---|---|
Use Scenario: Real-time phase current sampling in 3-phase BLDC motor drives using high-side shunt resistors. IC Role / Device Role / Timing Role: Current sense amplifier providing isolated, high-bandwidth analog feedback to MCU ADC for field-oriented control (FOC) loops. Use Value: 250 kHz bandwidth enables sampling within dead-time intervals; ±400 µV offset ensures <0.5% current error at 50 A full-scale with 1 mΩ shunt. |
Use Scenario: High-side current monitoring in automotive transmission solenoid valves with PWM-driven low-side switches. IC Role / Device Role / Timing Role: Bidirectional amplifier detecting both activation current and recirculation current during switch-off. Use Value: −2 V to +70 V common-mode range captures flyback voltage reversal across clamp diode; zero-drift ensures consistent diagnostic thresholds over lifetime. |
| Power Management | Diagnostic Protection |
Use Scenario: In-rail current monitoring for 48 V mild-hybrid vehicle DC-DC converters and battery disconnect units. IC Role / Device Role / Timing Role: High-voltage sense amplifier feeding safety MCU for overcurrent detection and load shedding decisions. Use Value: AEC-Q100 qualification and −40°C to +125°C operation guarantee reliability in under-hood environments; 86 dB CMRR rejects converter switching noise. |
Use Scenario: Short-to-battery or short-to-ground fault detection in electric power steering (EPS) motor drivers. IC Role / Device Role / Timing Role: Precision current sensor providing differential input to comparator or ADC for real-time fault classification. Use Value: ±200 µV typical input offset enables detection of <100 mA fault currents with 10 mΩ shunt; survival rating to −3 V/+80 V prevents latch-up during load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8418ARZ | 20 V/V gain, ±150 µV max offset, same 8-lead SOIC_N package, but no VREF1/VREF2 offset adjustment pins. | Limited to unidirectional sensing or requires external op-amp for bidirectional offset - less flexible for H-bridge reverse-current capture. | Select AD8418ARZ only if fixed 20× gain suffices and board space permits external level-shifting circuitry. |
| INA240A1QDRQ1 | 80 V/V gain, ±100 µV max offset, integrated EMI filter, but requires external 2.5 V reference for bidirectional operation. | Higher gain improves SNR with smaller shunts, yet lacks internal ratiometric VREF splitting - increases BOM count and layout sensitivity. | Choose INA240A1QDRQ1 when maximizing resolution with sub-500 µΩ shunts is critical and external reference sourcing is acceptable. |
Compared with AD8417BRMZ, AD8418ARZ offers lower gain and no internal offset adjustment, limiting bidirectional flexibility, while INA240A1QDRQ1 provides higher gain and tighter offset but demands external reference infrastructure - making AD8417BRMZ the optimal balance of configurability, integration, and automotive robustness.
Availability
AD8417BRMZ is available at Aetrix Electronics and suitable for automotive motor control, solenoid actuation, and 48 V power management systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8417BRMZ 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 since 1965.
The AD8417BRMZ belongs to Analog Devices' precision current sensing amplifier product line, engineered specifically for AEC-Q100-compliant automotive subsystems where accuracy, PWM immunity, and temperature stability are non-negotiable.
FAQ
What is the operating temperature range qualified for AD8417BRMZ?
The AD8417BRMZ is rated for −40°C to +125°C operation and is AEC-Q100 qualified for automotive use. This range covers under-hood environments in passenger vehicles and commercial trucks, supporting reliable performance in engine control units, transmission modules, and EPS systems without derating.
Does AD8417BRMZ support bidirectional current measurement out of the box?
Yes, AD8417BRMZ natively supports bidirectional current sensing. By applying complementary voltages to VREF1 and VREF2 (e.g., tying VREF1 to VS and VREF2 to GND), the output centers at VS/2 - enabling symmetrical positive/negative output swing for forward and reverse motor currents without external components.
What package type is used for AD8417BRMZ?
AD8417BRMZ uses an 8-lead MSOP (RM-8) package with dimensions 3.0 mm × 3.0 mm × 0.85 mm and exposed pad. This compact, surface-mount package supports high-density automotive PCB layouts and provides adequate thermal dissipation for continuous 4.1 mA quiescent current operation.
How does AD8417BRMZ handle PWM-induced common-mode noise?
AD8417BRMZ incorporates patented circuitry (U.S. Patent 8,624,668 B2) and on-chip EMI filters to reject fast common-mode transients up to 1 V/ns. Its 86 dB CMRR from dc to 10 kHz ensures minimal output error during MOSFET switching in motor inverters - validated in H-bridge and 3-phase drive reference designs.
Can AD8417BRMZ be used for low-side current sensing?
Yes, AD8417BRMZ supports low-side current sensing with full accuracy. Its −2 V to +70 V common-mode input range accommodates negative voltage excursions during inductive kickback, and its 60 V/V gain enables precise measurement even with millivolt-level shunt drops - commonly deployed in battery protection circuits and DC-DC converter current limiting.
AD8417BRMZ 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
AD8417BRMZ FAQ
1.How can I place an order for AD8417BRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8417BRMZ 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 AD8417BRMZ reliable?
The price and inventory of AD8417BRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8417BRMZ is usually 5 days.
3.What payment methods are accepted for AD8417BRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8417BRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8417BRMZ?
AD8417BRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8417BRMZ 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 AD8417BRMZ?
For technical support, including AD8417BRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8417BRMZ requirements.
6.How does Aetrix verify that AD8417BRMZ is sourced from the original manufacturer or authorized distributors?
All AD8417BRMZ 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 AD8417BRMZ meets industry standards.
7.What is the process for return or replacement of AD8417BRMZ?
All AD8417BRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8417BRMZ, 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 AD8417BRMZ part is unused and in its original packaging.
Return procedure for AD8417BRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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