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Analog Devices Inc. AD8411AWBRMZ
- Part No.:
- AD8411AWBRMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8411AWBRMZ.pdf
- Description:
- HIGH BW CURR SENSE FOR 48V/12V D
- Quantity:
- Payment:
- Shipping:
Inventory:321
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Product details
Overview
AD8411AWBRMZ from Analog Devices is a high-voltage, bidirectional current-sense amplifier with 50 V/V fixed gain, 2.7 MHz bandwidth, −2 V to +70 V continuous common-mode input range, ±200 µV max input offset over temperature, and AEC-Q100 qualification for automotive solenoid and BLDC motor control.
For engineers reviewing the AD8411AWBRMZ datasheet, AD8411AWBRMZ pinout, AD8411AWBRMZ application, or AD8411AWBRMZ equivalent, this page delivers verified specifications, package mapping to 8-lead MSOP, PWM rejection capability, real-world use cases in 48 V DC-DC converters and power rail monitoring, and validated alternative options.
Technical Context
The AD8411AWBRMZ employs a DigiTrim™ in-package trim core architecture enabling ±0.26 µV/°C typical offset drift without chopping or auto-zero clocks-critical for avoiding intermodulation in PWM-rich environments. Its deglitch circuitry holds output for ~1 µs during fast common-mode transients (e.g., 1 V/ns), minimizing amplitude disturbance and settling time degradation.
It achieves 142 dB typical DC CMRR and maintains 96 dB AC CMRR at 50 kHz while operating from 2.9 V to 5.5 V supply. The buffered output directly interfaces with ADCs or controllers, and dual reference pins (VREF1/VREF2) support ratiometric offset adjustment across the full output swing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V fixed-enables direct scaling of shunt voltage to measurable output without external gain stages. |
| Small-signal bandwidth | 2.7 MHz - supports accurate current measurement in fast-switching BLDC and DC-DC applications. |
| Common-mode input range | −2 V to +70 V continuous - enables high-side sensing in 48 V systems and survival up to +85 V. |
| Input offset voltage | ±200 µV max over −40°C to +125°C - ensures <1% error at 20 mV shunt drop without calibration. |
| Offset drift | ±0.26 µV/°C typical - minimizes thermal-induced gain error drift in under-hood automotive environments. |
| CMRR (DC) | 123 dB min - rejects low-frequency noise from shared ground paths in motor drives. |
| Supply voltage | 2.9 V to 5.5 V - compatible with standard 3.3 V and 5 V controller rails without LDO overhead. |
Pinout & Package
AD8411AWBRMZ is housed in an 8-lead MSOP package (RM-8), thermally optimized with θJA = 152°C/W and θJCT = 59.7°C/W per JEDEC 2S2P test board. Pin 4 is NC (internally connected to die; may float or tie to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Negative input | Connects to low-side of shunt resistor; balanced bias current enables Kelvin sensing accuracy. |
| 2 (GND) | Ground reference | System ground return for supply and output; separate from power ground in split-rail layouts. |
| 3 (VREF2) | Reference input 2 | Together with VREF1, sets output offset ratiometrically; 60 kΩ internal divider enables 0.5 V/V gain when used as supply divider. |
| 4 (NC) | No connect | Internally tied to die; floating or grounded-no signal function but aids FMEA isolation. |
| 5 (OUT) | Amplified output | Buffered voltage output (0.2 Ω source impedance) directly drives ADC inputs or comparator thresholds. |
| 6 (VS) | Positive supply | Accepts 2.9 V–5.5 V; PSRR >84 dB ensures immunity to supply ripple in noisy converter environments. |
| 7 (VREF1) | Reference input 1 | Paired with VREF2 for offset adjustment; parallel connection yields 1 V/V gain to output. |
| 8 (+IN) | Positive input | Connects to high-side of shunt; matched input structure maintains CMRR across full common-mode range. |
Key Features
| Feature | Design Value |
|---|---|
| PWM rejection via deglitch circuitry | Holds output stable for ~1 µs during fast common-mode steps (e.g., 0 V → 48 V), preventing false overcurrent triggers in motor gate drivers. |
| In-package DigiTrim™ trim core | Eliminates need for external chopper clocks-avoids intermodulation distortion in sensitive analog signal chains. |
| Bidirectional current sensing | Supports both sourcing and sinking current measurement using single shunt, reducing BOM count vs. dual-amplifier solutions. |
| AEC-Q100 qualified | Rated for −40°C to +125°C operation with full parametric validation-meets automotive solenoid and EPS system requirements. |
| Ratiometric VREF interface | VREF1/VREF2 pins allow precise zero-current output positioning anywhere between GND and VS-enabling unidirectional or bipolar output ranges. |
Applications
| BLDC Motor Control | Solenoid Driver Monitoring |
|---|---|
Use Scenario: Real-time phase current feedback in 3-phase inverter legs driving HVAC blowers or power steering motors. IC Role / Device Role / Timing Role: High-side current-sense amplifier measuring differential voltage across 1 mΩ shunt with 2.7 MHz bandwidth to capture switching-edge transients. Use Value: Enables field-oriented control (FOC) with <1 µs transient response and <0.15% gain error-critical for torque ripple reduction. | Use Scenario: Closed-loop current regulation in automotive fuel injectors or transmission shift solenoids powered from 12 V or 48 V rails. IC Role / Device Role / Timing Role: Bidirectional amplifier sensing solenoid coil current during pull-in (high di/dt) and hold (low current) phases. Use Value: ±200 µV offset ensures <10 mA absolute current accuracy at 200 mA hold current-prevents unintended de-energization. |
| 48 V–12 V Bidirectional DC-DC | Datacenter PSU Current Monitoring |
Use Scenario: Input/output current sensing in buck-boost converters for vehicle electrification architectures (e.g., 48 V battery ↔ 12 V legacy bus). IC Role / Device Role / Timing Role: High-common-mode amplifier on primary and secondary sides, rejecting 100 kHz PWM noise while delivering 50× gain to controller ADC. Use Value: 96 dB AC CMRR at 50 kHz suppresses switching noise coupling-eliminates need for additional RC filtering on ADC input. | Use Scenario: Input rail current monitoring in server power supply units (PSUs) and battery backup units (BBUs) operating at 54 V nominal. IC Role / Device Role / Timing Role: Low-drift current-sense amplifier on 54 V input bus, interfacing with isolated digital isolators and microcontrollers. Use Value: −2 V to +70 V input range covers cold cranking dips and load dump surges-ensures continuous monitoring without saturation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | 20 V/V gain, 4 V/V step-gain variants; 800 kHz bandwidth; ±10 µV offset at 25°C (but ±500 µV over temp) | Lower bandwidth limits use in >100 kHz switching converters; higher offset drift impacts precision at extremes | Select for cost-sensitive automotive apps where 800 kHz suffices and gain flexibility is needed. |
| MAX40056ATA+T | 100 V/V gain; 2.5 MHz bandwidth; −5 V to +65 V common-mode; ±300 µV max offset over temp | Wider survival range (−20 V to +85 V same), but higher offset reduces accuracy below 10 mV shunt drops | Select when 100 V/V gain is required and ±300 µV offset is acceptable for system-level calibration. |
Compared with AD8411AWBRMZ, INA240A1QDRQ1 trades bandwidth and offset stability for gain flexibility and lower cost, while MAX40056ATA+T offers higher gain but sacrifices offset precision-making AD8411AWBRMZ optimal for high-accuracy, high-bandwidth 48 V automotive and industrial current sensing.
Availability
AD8411AWBRMZ is available at Aetrix Electronics and suitable for BLDC motor control, solenoid driver monitoring, and 48 V–12 V bidirectional DC-DC converter designs requiring stable component supply, AEC-Q100 compliance, and long-term industrial availability.
Supply support for AD8411AWBRMZ 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.
The AD8411A product line delivers high-voltage, high-bandwidth current-sense amplifiers engineered for precision motor control, solenoid actuation, and power conversion in automotive and industrial environments demanding AEC-Q100 reliability and PWM noise immunity.
FAQ
What is the operating temperature range for AD8411AWBRMZ?
The AD8411AWBRMZ is rated for −40°C to +125°C operation, matching the AD8411AWB grade specified in the datasheet. This range is fully validated for AEC-Q100 automotive qualification and supports under-hood deployment in engine control and transmission modules where ambient temperatures exceed 105°C.
Does AD8411AWBRMZ support bidirectional current sensing?
Yes, AD8411AWBRMZ supports true bidirectional current sensing using its dual reference pins (VREF1 and VREF2). By setting the output midpoint to VS/2, the device produces positive voltages for current in one direction and negative relative to mid-scale for reverse current-enabling single-shunt measurement in H-bridge and regenerative braking circuits.
What package type does AD8411AWBRMZ use?
AD8411AWBRMZ uses an 8-lead MSOP package (RM-8), with pin 4 designated as NC (internally connected to die). This package provides improved thermal performance over SOIC_N (θJA = 152°C/W vs. 142.8°C/W) and is footprint-compatible with industry-standard MSOP layouts for automated assembly.
How does AD8411AWBRMZ reject PWM noise?
AD8411AWBRMZ incorporates internal deglitch circuitry that holds the output steady for approximately 1 µs during fast common-mode transients (e.g., 0 V → 48 V at 1 V/ns). This prevents erroneous output spikes during PWM edge transitions, preserving signal integrity for downstream ADC sampling without requiring external filtering.
What is the maximum common-mode voltage AD8411AWBRMZ can survive?
AD8411AWBRMZ survives −20 V to +85 V continuous common-mode voltage on both +IN and −IN pins, exceeding its −2 V to +70 V operational range. This survival rating ensures robustness against load-dump events and cold-cranking dips in 12 V and 48 V automotive electrical systems.
AD8411AWBRMZ 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:
- 10V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 2.7 MHz
- Current - Input Bias:
- 178 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 7.8mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.9 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
AD8411AWBRMZ FAQ
1.How can I place an order for AD8411AWBRMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8411AWBRMZ 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 AD8411AWBRMZ reliable?
The price and inventory of AD8411AWBRMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8411AWBRMZ is usually 5 days.
3.What payment methods are accepted for AD8411AWBRMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8411AWBRMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8411AWBRMZ?
AD8411AWBRMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8411AWBRMZ 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 AD8411AWBRMZ?
For technical support, including AD8411AWBRMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8411AWBRMZ requirements.
6.How does Aetrix verify that AD8411AWBRMZ is sourced from the original manufacturer or authorized distributors?
All AD8411AWBRMZ 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 AD8411AWBRMZ meets industry standards.
7.What is the process for return or replacement of AD8411AWBRMZ?
All AD8411AWBRMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8411AWBRMZ, 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 AD8411AWBRMZ part is unused and in its original packaging.
Return procedure for AD8411AWBRMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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