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Analog Devices Inc. AD8211YRJZ-R2
- Part No.:
- AD8211YRJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AD8211YRJZ-R2.pdf
- Description:
- IC CURRENT MONITOR 0.25% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,547
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Product details
Overview
AD8211YRJZ-R2 from Analog Devices is a high-voltage, unidirectional current shunt monitor IC with fixed 20 V/V gain, ±0.35% total gain error over −40°C to +125°C, −2 V to +65 V common-mode input range, and buffered rail-to-rail output compatible with 5 V ADCs. It performs precision high-side current sensing in automotive engine management and motor control systems using a 5-lead SOT-23 package.
For engineers reviewing the AD8211YRJZ-R2 datasheet, AD8211YRJZ-R2 pinout, AD8211YRJZ-R2 application, or AD8211YRJZ-R2 equivalent, key selection criteria include its guaranteed 120 dB dc CMRR, 5 µV/°C offset drift, 500 kHz small-signal bandwidth, and operation across −2 V to +65 V common-mode voltage without supply dependency.
Technical Context
The AD8211YRJZ-R2 employs a proprietary high-common-mode-input amplifier architecture with precision-trimmed internal resistors (0.01% matching) to deliver stable 20 V/V gain independent of supply voltage. Its input stage maintains linearity across 0 mV–250 mV differential input voltage regardless of common-mode voltage from −2 V to +65 V.
It features dedicated circuitry ensuring output accuracy down to 2 mV input differential, even at low common-mode voltages (<5 V), enabling full dynamic range utilization in battery-referenced or PWM-switched inductive load monitoring. The buffered output drives 25 kΩ loads with <0.1 V to >4.9 V swing at temperature extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed, ±0.35% error over −40°C to +125°C - eliminates external gain-setting components and calibration drift in production systems |
| Common-Mode Input Range | −2 V to +65 V - supports direct connection to 12 V/24 V/48 V battery rails and withstands load-dump transients |
| Input Offset Drift | 5 µV/°C typical - ensures ≤±2.2 mV RTI offset shift across full temperature range for sub-1% current measurement error |
| CMRR | 120 dB typical at dc (VCM > 5 V) - rejects noise from switching regulators and motor commutation in high-noise environments |
| Small-Signal Bandwidth | 500 kHz - captures fast current transients in PWM-driven solenoids and BLDC motor phase currents |
| Output Voltage Range | 0.1 V to 4.95 V at 25°C - directly interfaces with 5 V SAR or sigma-delta ADCs without level-shifting or amplification |
| Quiescent Current | 1.2 mA to 2.0 mA (VCM > 5 V) - enables always-on current monitoring in low-power vehicle subsystems |
Pinout & Package
AD8211YRJZ-R2 is housed in a RoHS-compliant 5-lead SOT-23 (RJ-5) package per JEDEC MO-178-AA, with 0.95 mm pitch, 2.90 mm × 1.60 mm footprint, and 1.15 mm height - optimized for space-constrained automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Buffered output | Low-impedance (2 Ω), rail-to-rail voltage output referenced to GND; drives ADC inputs directly |
| 2 - GND | Analog ground | Reference node for output and internal circuitry; must be connected to system analog ground plane |
| 3 - VIN+ | Noninverting input | High-impedance (5 MΩ common-mode, 5 kΩ differential) node for shunt resistor high-side connection |
| 4 - VIN− | Inverting input | High-impedance node for shunt resistor low-side connection; forms differential pair with VIN+ |
| 5 - V+ | Positive supply | 4.5 V to 5.5 V single supply; powers internal amplifiers and output buffer; independent of common-mode input |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | Qualified per AEC-Q100 Grade 1 (−40°C to +125°C); supported by automotive reliability reports |
| ESD robustness | ±4000 V HBM - survives handling and board-level ESD events in manufacturing and field service |
| Differential input linearity | Maintains <1% total output error across 0–250 mV input at all common-mode voltages - enables accurate low-current detection |
| Supply-independent CMRR | 120 dB CMRR maintained regardless of 4.5 V–5.5 V supply variation - ensures consistent noise rejection in noisy power domains |
| Low quiescent current | 1.2 mA max at −40°C - reduces thermal load and extends battery life in always-on vehicle modules |
Applications
| Engine Management Systems | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Real-time monitoring of fuel injector coil current during pulse-width modulated actuation in gasoline/diesel engines. IC Role / Device Role / Timing Role: High-side current shunt monitor providing ground-referenced analog output proportional to injector current magnitude and timing. Use Value: Enables closed-loop injector diagnostics, misfire detection, and compliance with OBD-II emission standards via precise current waveform capture. |
Use Scenario: Continuous measurement of brushless DC motor phase current in EPS assist motors under variable torque demand. IC Role / Device Role / Timing Role: Unidirectional current sensor interfacing between motor bridge and microcontroller ADC for torque estimation and overcurrent protection. Use Value: Delivers 500 kHz bandwidth and <2.2 mV offset drift to support fast current-loop control and ASIL-B functional safety requirements. |
| Transmission Control Units | 48 V Mild Hybrid Systems |
Use Scenario: Monitoring solenoid valve current in automatic transmission hydraulic control units during gear shift sequencing. IC Role / Device Role / Timing Role: High-voltage current monitor placed on high-side of 12 V solenoid supply, rejecting battery ripple and switch-node noise. Use Value: Provides 120 dB CMRR and −2 V to +65 V input range to accurately resolve low-duty-cycle solenoid pulses amid 12 V rail disturbances. |
Use Scenario: Bidirectional current sensing (using two AD8211YRJZ-R2 devices) for battery charge/discharge monitoring in 48 V starter-generator systems. IC Role / Device Role / Timing Role: Precision unidirectional shunt amplifier measuring discharge current from 48 V bus to load, referenced to battery negative. Use Value: Enables SOC estimation with <0.5% gain error and 5 µV/°C drift, meeting ISO 21782-2 energy management accuracy targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4080TASA+ | 20 V/V gain, 2.7 V–76 V common-mode range, 85 dB CMRR at dc, SO-8 package | Larger footprint; lower CMRR limits noise immunity in high-dV/dt motor drive environments | Preferred when wider supply range (up to 76 V) is required and SO-8 layout is acceptable |
| INA240A1QDRQ1 | 20 V/V gain, −4 V to 80 V common-mode, 120 dB CMRR, 440 kHz bandwidth, 8-pin SOIC | Higher bandwidth tolerance but larger package; requires external 5 V regulator if system lacks clean 5 V rail | Chosen for enhanced transient immunity in 48 V systems where SOIC thermal mass improves long-term stability |
Compared with MAX4080TASA+ and INA240A1QDRQ1, the AD8211YRJZ-R2 offers identical gain and superior CMRR at dc in a space-saving 5-lead SOT-23, making it optimal for compact automotive modules where board area and high-noise rejection are critical.
Availability
AD8211YRJZ-R2 is available at Aetrix Electronics and suitable for engine management, electric power steering, and transmission control applications requiring stable component supply, automotive-grade traceability, and long-term lifecycle continuity.
Supply support for AD8211YRJZ-R2 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, serving industrial, automotive, communications, and healthcare markets.
The AD8211YRJZ-R2 belongs to Analog Devices' precision current sense amplifier product line, engineered specifically for high-reliability automotive current monitoring where wide common-mode range, low drift, and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum continuous common-mode voltage the AD8211YRJZ-R2 can withstand?
The AD8211YRJZ-R2 supports a continuous input voltage range of −3 V to +68 V, meaning it can safely operate with up to +68 V applied to both VIN+ and VIN− simultaneously. Its specified common-mode input voltage range for normal operation is −2 V to +65 V, which covers 12 V, 24 V, and 48 V automotive battery rails including load-dump transients. This rating is verified per Absolute Maximum Ratings Table 2 in the Rev. C datasheet.
Does the AD8211YRJZ-R2 require external gain-setting resistors?
No, the AD8211YRJZ-R2 has an internally fixed gain of 20 V/V achieved through laser-trimmed thin-film resistors matched to within 0.01%. This eliminates external components, reduces PCB area, and ensures ±0.35% total gain error over −40°C to +125°C without calibration. The gain is not user-adjustable and is identical across all AD8211YRJZ-R2 units.
Can the AD8211YRJZ-R2 be used for low-side current sensing?
Yes, the AD8211YRJZ-R2 supports low-side current sensing configurations as documented in Figure 27 of the datasheet. In this mode, the shunt is placed between load and ground, VIN− connects to ground, and VIN+ connects to the shunt's load side. Its 90+ dB CMRR at low common-mode voltages and input bias current below 0.6 µA ensure accurate ground-referenced measurements without compromising linearity.
What is the output voltage swing capability of the AD8211YRJZ-R2 at full temperature range?
The AD8211YRJZ-R2 delivers an output voltage range of 0.1 V to 4.95 V at 25°C, and 0.05 V to 4.9 V across −40°C to +125°C (per Table 1, Y Grade). This rail-to-rail buffered output directly interfaces with standard 5 V ADCs without external level-shifting, supporting accurate digitization of shunt voltages from 0 mV to 250 mV differential input.
Is the AD8211YRJZ-R2 pin-compatible with other members of the AD8211 family?
Yes, all AD8211 variants-including AD8211YRJZ-R2, AD8211YRJZ-RL, and AD8211WYRJZ-R7-share identical 5-lead SOT-23 (RJ-5) pinout and electrical functionality. The only differences are grade (Y vs. W), packaging format (reel vs. tape-and-reel), and branding (Y02 vs. Y3N); no PCB redesign is needed when substituting within the same package option.
AD8211YRJZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Monitor
- Sensing Method:
- High/Low-Side
- Accuracy:
- ±0.25%
- Voltage - Input:
- -2V ~ 65V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
AD8211YRJZ-R2 FAQ
1.How can I place an order for AD8211YRJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8211YRJZ-R2 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 AD8211YRJZ-R2 reliable?
The price and inventory of AD8211YRJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8211YRJZ-R2 is usually 5 days.
3.What payment methods are accepted for AD8211YRJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8211YRJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8211YRJZ-R2?
AD8211YRJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8211YRJZ-R2 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 AD8211YRJZ-R2?
For technical support, including AD8211YRJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8211YRJZ-R2 requirements.
6.How does Aetrix verify that AD8211YRJZ-R2 is sourced from the original manufacturer or authorized distributors?
All AD8211YRJZ-R2 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 AD8211YRJZ-R2 meets industry standards.
7.What is the process for return or replacement of AD8211YRJZ-R2?
All AD8211YRJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with AD8211YRJZ-R2, 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 AD8211YRJZ-R2 part is unused and in its original packaging.
Return procedure for AD8211YRJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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