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Analog Devices Inc. AD8212WYRMZ-RL
- Part No.:
- AD8212WYRMZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8212WYRMZ-RL.pdf
- Description:
- IC CURRENT MONITOR 1% 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,180
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Product details
Overview
AD8212WYRMZ-RL from Analog Devices is a high common-mode voltage current shunt monitor in an 8-lead MSOP package, featuring adjustable gain via external resistor, 7 V to 65 V native supply range (extendable to >500 V with external PNP), 1000 µA/V transconductance, ±2 mV input offset (RTI), and integrated 5 V series regulator. It enables precision high-side current sensing in motor control and DC-to-DC converter power stages.
For engineers reviewing the AD8212WYRMZ-RL datasheet, AD8212WYRMZ-RL pinout, AD8212WYRMZ-RL application, or AD8212WYRMZ-RL equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The AD8212WYRMZ-RL uses a current-output architecture with transconductance-based amplification (1000 µA/V), where output current IOUT = gm × VSENSE. Its internal 5 V series regulator maintains stable biasing across COM and V+, enabling operation at up to 65 V without external regulation.
In high-voltage mode (>65 V), it leverages an external PNP transistor connected to ALPHA (Pin 6) and IOUT (Pin 5), with patented base-current compensation ensuring full transconductance accuracy regardless of PNP β or temperature drift - eliminating need for expensive FETs or discrete Zener regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 7 V to 65 V native; >500 V achievable with external PNP - defines maximum system bus voltage supported without auxiliary regulation. |
| Transconductance (gm) | 1000 µA/V - fixed gain coefficient; output current scales linearly with sensed differential voltage across shunt. |
| Input Offset Voltage (RTI) | ±2 mV at TA = 25°C - sets minimum resolvable shunt voltage; determines smallest detectable load current for given RSHUNT. |
| Common-Mode Rejection | Not specified as CMRR; instead achieves robust high-side sensing via regulated internal bias - eliminates need for matched resistors or instrumentation amp topology. |
| Output Current Range | 0 µA to 500 µA - corresponds to 0–500 mV differential input; directly converts to voltage via external ROUT (e.g., 10 kΩ → 0–5 V). |
| Regulator Output | 4.80 V to 5.20 V @ 7–65 V supply - powers internal circuitry and establishes reference for COM pin at (V+) − 5 V, critical for high-side referenced operation. |
| Small-Signal Bandwidth | 1000 kHz at G = 10 - supports fast transient current monitoring in switching power supplies and motor commutation events. |
Pinout & Package
AD8212WYRMZ-RL is housed in an 8-lead MSOP (RM-8) package per JEDEC MO-187-AA, with 0.65 mm pitch, 3.00 mm × 3.00 mm body, and exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pin 1) | Supply input / inverting amplifier input | Connects to high-side rail; powers device and serves as reference node for internal amplifier - must be ≥7 V for regulator activation. |
| COM (Pin 2) | Regulator low side / internal ground reference | Internally held at (V+) − 5 V; forms return path for bias current and defines lowest potential point in IC - not system ground. |
| BIAS (Pin 3) | Bias circuit low side | Connects to system ground in normal mode; in high-voltage mode, connects to RBIAS to set bias current for external PNP operation. |
| NC (Pin 4) | No connect | Unbonded; must remain unconnected - no routing or grounding allowed. |
| IOUT (Pin 5) | Current output terminal | Sinks proportional current (0–500 µA); requires external ROUT to convert to voltage - high-impedance node, avoid capacitive loading. |
| ALPHA (Pin 6) | External PNP base compensation input | Accepts base current from external PNP; enables patented compensation circuit to restore full transconductance accuracy in >65 V operation. |
| NC (Pin 7) | No connect | Unbonded; must remain unconnected - no routing or grounding allowed. |
| VSENSE (Pin 8) | Noninverting amplifier input | Connects to load-side of shunt resistor; senses differential voltage relative to V+; input impedance 2 kΩ differential, 5 MΩ common-mode. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable gain via external ROUT | Gain = ROUT / 1000 Ω (e.g., 20 kΩ → G = 20); enables precise scaling to ADC input range without recalibration. |
| Integrated 5 V series regulator | Maintains stable 5 V drop between V+ and COM - removes need for external LDO or Zener, simplifying high-side supply design. |
| Patented output current compensation | Eliminates base-current error from external PNP transistors - allows use of low-cost, low-β PNP devices while preserving ±1% gain accuracy. |
| High common-mode voltage tolerance | Operates up to 65 V natively; extends to >500 V using standard PNP transistors - supports industrial battery stacks and HV DC links. |
| Wide temperature range | Specified from −40°C to +125°C - suitable for under-hood automotive, industrial motor drives, and telecom power systems. |
Applications
| Motor Control | DC-to-DC Converters |
|---|---|
|
Use Scenario: High-side current monitoring in brushed/BLDC motor drivers where shunt is placed between battery and H-bridge high-side switches. IC Role / Device Role / Timing Role: Current shunt monitor providing isolated, rail-referenced analog feedback for overcurrent protection and torque control loops. Use Value: Enables fast (<2 µs settling) detection of stall or short-circuit events at bus voltages up to 65 V without level-shifting circuitry. |
Use Scenario: Input/output current sensing in isolated flyback or forward converters operating from 12–48 V DC bus. IC Role / Device Role / Timing Role: Unidirectional current sensor converting shunt voltage to proportional current for downstream signal conditioning. Use Value: Delivers 1000 kHz bandwidth and <1% gain error across temperature - supports accurate power stage efficiency measurement and cycle-by-cycle current limiting. |
| Battery Monitoring | Industrial Power Supplies |
|
Use Scenario: Charge/discharge current monitoring in 24 V/48 V lead-acid or LiFePO₄ battery management systems. IC Role / Device Role / Timing Role: High-side current sense amplifier interfaced to MCU ADC via simple ROUT resistor and optional buffer. Use Value: ±2 mV offset and ±10 µV/°C drift ensure ≤0.5% current measurement error over full −40°C to +125°C range - critical for state-of-charge estimation. |
Use Scenario: Overcurrent protection in programmable lab power supplies or industrial 24–60 V DC distribution units. IC Role / Device Role / Timing Role: Precision current monitor feeding analog comparator or digital controller for fast trip response. Use Value: Supports >500 V operation with external PNP - enables direct sensing on HV secondary rails without optocouplers or isolated amplifiers. |
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+ | Fixed gain (20 V/V), voltage output, 76 V max supply, no external PNP support | Limited to ≤76 V systems; requires external op-amp for gain adjustment; no >500 V extension capability | Select when fixed-gain voltage output is preferred and system voltage stays below 76 V. |
| INA240A1QPWRQ1 | Voltage output, 80 V max common-mode, ±20 µV/°C offset drift, AEC-Q100 qualified | Automotive-qualified but lacks >65 V extension; higher offset drift reduces accuracy at temperature extremes | Select for automotive-grade designs requiring qualification and voltage output, but not for >65 V or ultra-low-drift needs. |
Compared with MAX4080TASA+ and INA240A1QPWRQ1, AD8212WYRMZ-RL uniquely supports >500 V operation via external PNP with built-in compensation, offers lower offset drift (±10 µV/°C vs. ±20 µV/°C), and provides current output for noise-immune transmission - making it optimal for industrial HV sensing where cost, accuracy, and voltage range are jointly constrained.
Availability
AD8212WYRMZ-RL is available at Aetrix Electronics and suitable for motor control, DC-to-DC converter feedback, and industrial battery monitoring requiring stable component supply across extended temperature and high-voltage operating conditions.
Supply support for AD8212WYRMZ-RL 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 AD8212 belongs to Analog Devices' precision current sensing amplifier product line, designed specifically for high common-mode voltage, high-accuracy shunt-based current measurement in power conversion and motor control systems.
FAQ
What is the maximum common-mode voltage supported by AD8212WYRMZ-RL without external components?
The AD8212WYRMZ-RL supports a native common-mode voltage range of 7 V to 65 V when operated in normal mode with no external pass transistor. This is defined by the internal process breakdown limit and is fully specified in the datasheet under "Supply Voltage" with typical and absolute maximum ratings. Operation beyond 65 V requires the external PNP configuration described in the Applications Information section.
How does the ALPHA pin (Pin 6) function in AD8212WYRMZ-RL high-voltage operation?
In high-voltage operation (>65 V), the ALPHA pin (Pin 6) of AD8212WYRMZ-RL accepts the base current of the external PNP transistor. The AD8212WYRMZ-RL's integrated compensation circuit mirrors this current into an internal resistor network, generating a corrective voltage that offsets base-current-induced gain error - ensuring full 1000 µA/V transconductance accuracy regardless of PNP β or temperature.
Can AD8212WYRMZ-RL measure bidirectional current?
No, AD8212WYRMZ-RL is a unidirectional current shunt monitor optimized for high-side sensing of current flowing from supply to load. For bidirectional applications such as battery charge/discharge monitoring, two AD8212WYRMZ-RL devices must be used in complementary configuration - one sensing load current and the other sensing charge current - as shown in Figure 27 of the official datasheet.
What is the purpose of the BIAS pin (Pin 3) on AD8212WYRMZ-RL?
The BIAS pin (Pin 3) on AD8212WYRMZ-RL serves as the low-side connection for the internal bias circuit. In normal operation (7–65 V), it connects to system ground. In high-voltage mode, it connects to an external RBIAS resistor tied to V+, setting the bias current required to activate the internal regulator and enable PNP transistor operation - values between 200 µA and 1 mA are recommended per Figure 21.
Does AD8212WYRMZ-RL include an internal voltage reference?
Yes, AD8212WYRMZ-RL integrates a precision 5 V series regulator that maintains a stable 4.80 V to 5.20 V output between V+ and COM pins across supply voltages from 7 V to 65 V. This regulator powers internal circuitry and establishes the COM reference - eliminating need for external references or LDOs in high-side sensing topologies.
AD8212WYRMZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Monitor
- Sensing Method:
- High-Side
- Accuracy:
- ±1%
- Voltage - Input:
- 7V ~ 65V
- Current - Output:
- 500µA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
AD8212WYRMZ-RL FAQ
1.How can I place an order for AD8212WYRMZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8212WYRMZ-RL 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 AD8212WYRMZ-RL reliable?
The price and inventory of AD8212WYRMZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8212WYRMZ-RL is usually 5 days.
3.What payment methods are accepted for AD8212WYRMZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8212WYRMZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8212WYRMZ-RL?
AD8212WYRMZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8212WYRMZ-RL 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 AD8212WYRMZ-RL?
For technical support, including AD8212WYRMZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8212WYRMZ-RL requirements.
6.How does Aetrix verify that AD8212WYRMZ-RL is sourced from the original manufacturer or authorized distributors?
All AD8212WYRMZ-RL 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 AD8212WYRMZ-RL meets industry standards.
7.What is the process for return or replacement of AD8212WYRMZ-RL?
All AD8212WYRMZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with AD8212WYRMZ-RL, 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 AD8212WYRMZ-RL part is unused and in its original packaging.
Return procedure for AD8212WYRMZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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