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Analog Devices Inc. AD8214ARMZ-R7
- Part No.:
- AD8214ARMZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8214ARMZ-R7.pdf
- Description:
- IC CURRENT MONITOR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:747
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Product details
Overview
AD8214ARMZ-R7 from Analog Devices is a high-voltage, fast-response current shunt comparator designed for high-side overcurrent detection in DC systems. It operates from 5 V to 65 V supply, delivers <100 ns input-to-output propagation delay, features 10 mV hysteresis and an integrated 2.4 V regulator, and is used in automotive motor controls and battery protection circuits.
For engineers reviewing the AD8214ARMZ-R7 datasheet, AD8214ARMZ-R7 pinout, AD8214ARMZ-R7 application, or AD8214ARMZ-R7 equivalent, key selection criteria include high common-mode voltage tolerance (up to 65 V), sub-100 ns response time, internal regulator accessibility for threshold setting, and MSOP-8 packaging qualified for −40°C to +125°C operation.
Technical Context
The AD8214ARMZ-R7 implements a high-side sensing architecture with differential inputs referenced to the positive supply rail (VS), enabling direct monitoring of current through a shunt resistor placed between VS and load. Its internal Zener-based 2.4 V regulator provides stable biasing for both internal circuitry and external threshold-setting resistors.
It uses a current-output stage (1 mA typical high, 100 nA low) compatible with ground-referenced pull-up loads, and incorporates built-in 10 mV hysteresis to suppress noise-induced output chatter during slow current transitions near the trip point.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5 V to 65 V - supports direct connection to automotive battery rails and industrial DC buses without external regulation. |
| Propagation Delay | <100 ns - enables real-time overcurrent shutdown before FET or shunt damage occurs in motor/solenoid drives. |
| Hysteresis | 10 mV - prevents oscillation during marginal overcurrent conditions by requiring 10 mV reversal to reset output state. |
| Input Offset Voltage | ±3 mV (typ), ±8 mV (max over temp) - defines minimum detectable voltage difference across shunt at temperature extremes. |
| Regulator Output | 2.43 V ±5% (−40°C to +125°C) - supplies stable reference for external resistor divider to set precise current threshold. |
| Common-Mode Input Range | VS − 0.9 V to VS + 0.2 V - allows +IN/–IN to operate within 900 mV of supply rail, critical for high-side sensing accuracy. |
| Operating Temperature | −40°C to +125°C - meets AEC-Q100 requirements for under-hood automotive applications. |
Pinout & Package
AD8214ARMZ-R7 is housed in an 8-lead MSOP (RM-8) package per JEDEC MO-187-AA, with 0.65 mm pitch and 3.0 mm × 3.0 mm body size. Pin 1 is marked with a dot; pins 4 and 7 are no-connect (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VS) | Positive Supply Input | Connects directly to high-side rail (5 V–65 V); powers internal circuitry and regulator. |
| 2 (+IN) | Noninverting Input | Receives user-defined threshold voltage via resistor divider from VREG; comparator trips when –IN falls below this level. |
| 3 (VREG) | Regulator Output | 2.4 V reference (vs. VS); used to generate precise threshold voltage for +IN with external R1/R2. |
| 4 (NC) | No Connect | Unbonded pad; must remain unconnected and unpopulated on PCB. |
| 5 (OUT) | Current Output | Sinks ~100 nA (low) or sources ~1 mA (high); drives ground-referenced load resistor to generate logic-level signal. |
| 6 (GND) | Ground Reference | Internal ground node tied to system ground; required for output load return path. |
| 7 (NC) | No Connect | Unbonded pad; must remain unconnected and unpopulated on PCB. |
| 8 (–IN) | Inverting Input | Connected to shunt resistor's load-side terminal; senses voltage drop proportional to load current. |
Key Features
| Feature | Design Value |
|---|---|
| High-Side Sensing Architecture | Enables direct current monitoring on positive supply rail without ground disruption or level-shifting circuitry. |
| Integrated 2.4 V Regulator | Provides stable, temperature-compensated reference for external threshold-setting resistors-no external LDO needed. |
| Sub-100 ns Response Time | Ensures detection and shutdown occur before destructive energy accumulates in MOSFETs, IGBTs, or shunts during fault events. |
| 10 mV Built-in Hysteresis | Eliminates false triggering from noise or slow current transients near trip threshold without external components. |
| Automotive-Qualified MSOP-8 | Meets AEC-Q100 Grade 0 requirements; validated for −40°C to +125°C operation in engine control, transmission, and battery systems. |
Applications
| Motor Control Protection | Diesel Fuel Injection Control |
|---|---|
|
Use Scenario: Monitoring phase current in BLDC motor drivers to prevent winding saturation or MOSFET thermal runaway. IC Role / Device Role / Timing Role: High-side current shunt comparator detecting overcurrent >15 A within <100 ns to trigger gate driver disable. Use Value: Prevents irreversible damage to power stages by initiating shutdown before I²t energy exceeds SOA limits of discrete switches. |
Use Scenario: Real-time current supervision of solenoid actuators in high-pressure common-rail diesel injectors. IC Role / Device Role / Timing Role: Fast-response comparator verifying injector coil energization current matches commanded pulse width and amplitude. Use Value: Enables closed-loop solenoid diagnostics and immediate fault isolation, improving emission compliance and fuel efficiency. |
| Automotive Battery Management | DC-DC Converter Overcurrent Protection |
|
Use Scenario: Detecting short-circuit faults in 12 V/48 V hybrid battery disconnect paths during load dump or jump-start events. IC Role / Device Role / Timing Role: High-common-mode comparator monitoring shunt on battery positive terminal to flag >200 A faults before fuse blow time. Use Value: Provides faster response than mechanical fuses, preserving downstream electronics and enabling predictive maintenance alerts. |
Use Scenario: Protecting synchronous buck converter outputs against output short circuits or inductor saturation in telecom power supplies. IC Role / Device Role / Timing Role: High-side current monitor comparing sensed voltage to regulated threshold, asserting fault signal to PWM controller within 100 ns. Use Value: Limits peak fault current to safe levels, preventing transformer core saturation and secondary-side rectifier failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current shunt comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX40056ATA+T | Wider supply range (4.5 V–65 V), lower offset (±500 µV typ), but no integrated regulator; requires external reference. | Better precision for low-current thresholds (<50 mV); less suitable for cost-sensitive designs needing self-contained threshold generation. | Choose MAX40056ATA+T when ultra-low offset and higher accuracy at sub-10 mV thresholds are required, and external reference is acceptable. |
| INA301A3IDR | Current-output comparator with 1 V internal reference (not adjustable), 350 ns response, and open-drain output. | Slower response limits use in high-speed motor protection; fixed reference reduces design flexibility for custom trip points. | Choose INA301A3IDR for simpler, lower-cost overcurrent detection where 350 ns latency is acceptable and 1 V threshold suffices. |
Compared with MAX40056ATA+T and INA301A3IDR, AD8214ARMZ-R7 uniquely combines sub-100 ns speed, integrated 2.4 V regulator for flexible threshold setting, and automotive qualification-making it optimal for high-reliability, high-speed high-side protection where board space and BOM count are constrained.
Availability
AD8214ARMZ-R7 is available at Aetrix Electronics and suitable for automotive motor controls, diesel injection systems, and battery management applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8214ARMZ-R7 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.
The AD8214 belongs to Analog Devices' precision current sensing portfolio, engineered specifically for robust, high-speed overcurrent protection in harsh automotive and industrial environments where reliability and timing integrity are critical.
FAQ
What is the maximum supply voltage the AD8214ARMZ-R7 can withstand continuously?
The AD8214ARMZ-R7 has a continuous operating supply voltage range of 5 V to 65 V. Its absolute maximum rating for supply voltage is 65 V, and it can survive transient exposure up to 68 V on the VS pin. Exceeding 65 V during normal operation risks permanent damage, so system design must ensure clamping or regulation limits VS to ≤65 V under all conditions including load dump.
How does the AD8214ARMZ-R7 generate its current-limit threshold voltage?
The AD8214ARMZ-R7 uses its integrated 2.4 V regulator (VREG pin) to establish a stable reference. A resistor divider (R1 + R2) connects between VREG and GND, with the junction feeding the +IN pin. The threshold voltage at +IN equals 2.4 V × R1/(R1 + R2). For example, using R1 = 6.25 kΩ and R2 = 193.75 kΩ sets a 75 mV threshold-ideal for detecting 15 A across a 5 mΩ shunt.
Can the AD8214ARMZ-R7 be used with a shunt resistor on the low side of the load?
No-the AD8214ARMZ-R7 is explicitly designed for high-side current sensing only. Its input common-mode range is specified relative to VS (VS − 0.9 V to VS + 0.2 V), and its internal regulator is referenced to VS. Low-side placement would place the inputs outside their valid common-mode window and prevent proper operation. For low-side sensing, a dedicated low-side current sense amplifier (e.g., AD820x family) is required.
What is the purpose of the 10 mV hysteresis in the AD8214ARMZ-R7?
The 10 mV hysteresis in the AD8214ARMZ-R7 prevents output oscillation when the sensed current hovers near the trip threshold due to noise or slow transients. Once the output switches high (indicating overcurrent), the −IN input must fall 10 mV *below* the original +IN threshold before the output returns low. This ensures clean, chatter-free signaling to downstream controllers-even in electrically noisy automotive environments.
Is the AD8214ARMZ-R7 pin-compatible with other members of the AD8214 family?
Yes-AD8214ARMZ-R7 shares identical pinout, package (MSOP-8 RM-8), and electrical behavior with AD8214ARMZ and AD8214ARMZ-RL. All variants differ only in reel size (7″ vs. 13″) and packaging markings; functionality, timing, and thermal specs are identical. Designers may substitute freely within the same temperature grade (−40°C to +125°C) without layout changes.
AD8214ARMZ-R7 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:
- -
- Voltage - Input:
- 5V ~ 65V
- Current - Output:
- 1mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
AD8214ARMZ-R7 FAQ
1.How can I place an order for AD8214ARMZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8214ARMZ-R7 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 AD8214ARMZ-R7 reliable?
The price and inventory of AD8214ARMZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8214ARMZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8214ARMZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8214ARMZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8214ARMZ-R7?
AD8214ARMZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8214ARMZ-R7 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 AD8214ARMZ-R7?
For technical support, including AD8214ARMZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8214ARMZ-R7 requirements.
6.How does Aetrix verify that AD8214ARMZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8214ARMZ-R7 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 AD8214ARMZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8214ARMZ-R7?
All AD8214ARMZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8214ARMZ-R7, 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 AD8214ARMZ-R7 part is unused and in its original packaging.
Return procedure for AD8214ARMZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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