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Analog Devices Inc. AD8217BRMZ-R7
- Part No.:
- AD8217BRMZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Current Regulation/Management
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8217BRMZ-R7.pdf
- Description:
- IC CURRENT MONITOR 0.1% 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:13,793
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Product details
Overview
AD8217BRMZ-R7 from Analog Devices is a high-voltage, zero-drift current shunt monitor optimized for unidirectional high-side current sensing in industrial and telecom power systems. It features a fixed 20 V/V gain, ±100 nV/°C typical offset drift, ±100 μV typical input offset, and operates from 4.5 V to 80 V common-mode voltage - enabling direct integration into 48 V telecom power rails and motor control bias circuits.
For engineers reviewing the AD8217BRMZ-R7 datasheet, AD8217BRMZ-R7 pinout, AD8217BRMZ-R7 application, or AD8217BRMZ-R7 equivalent, this page delivers verified specifications, real-world use context, pin-level design meaning, and validated alternative options for high-accuracy, high-CMRR current monitoring where supply simplicity and temperature stability are critical.
Technical Context
The AD8217BRMZ-R7 implements a precision difference amplifier core with matched thin-film resistors (R4/R1 = 20 V/V) and a zero-drift auto-zero architecture that maintains ±100 nV/°C offset drift across −40°C to +125°C. Its internal LDO draws power directly from the +IN pin, eliminating need for an auxiliary supply when common-mode voltage is ≥4.5 V.
It delivers 100 dB CMRR at dc and >90 dB up to 100 kHz, supports differential inputs up to 250 mV, and clamps output to ≤5.6 V to protect downstream ADCs - all while maintaining linearity across full input range regardless of common-mode voltage (4.5 V–80 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed; enables direct scaling of 10 mV shunt drop to 200 mV output - simplifies ADC full-scale alignment. |
| Input Offset Drift | ±100 nV/°C typical; ensures <±300 μV total offset error over −40°C to +125°C - critical for battery management accuracy. |
| Common-Mode Range | 4.5 V to 80 V continuous; supports direct connection to 48 V telecom rails and industrial 24–72 V bus systems without level-shifting. |
| CMRR | 100 dB typical at dc; rejects noise from high-voltage switching nodes - essential for clean current measurement in motor drives. |
| Small-Signal Bandwidth | 500 kHz; captures fast current transients in PWM-driven loads like unidirectional motor control stages. |
| Output Voltage Range | 0.01 V to 5 V (with 25 kΩ load); rail-to-rail compatible with 5 V SAR ADCs and microcontroller analog inputs. |
| Quiescent Current | 800 μA max over temperature; minimizes burden on high-side power rails in always-on monitoring applications. |
Pinout & Package
AD8217BRMZ-R7 is housed in an 8-lead MSOP (RM-8) package, 3.0 mm × 3.0 mm × 1.1 mm, compliant with JEDEC MO-187-AA. The package supports reflow soldering and offers thermal performance suitable for high-power density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Noninverting input / LDO input | Connects to high-side shunt terminal; supplies internal LDO - no external VDD required if VCM ≥ 4.5 V. |
| −IN | Inverting input | Connects to low-side shunt terminal; forms differential pair with +IN to reject common-mode voltage up to 80 V. |
| GND | Analog ground reference | System ground return for output stage and internal circuitry; must be low-impedance to preserve CMRR. |
| OUT | Buffered voltage output | Provides 20× amplified, ground-referenced output; drives 25 kΩ loads directly - interfaces with most 5 V ADCs without buffering. |
| Pins 2,3,6,7 | No connect (NC) | Internally unconnected; must remain floating - no routing or grounding permitted per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift amplifier core | Delivers ±100 nV/°C offset drift - eliminates calibration drift in long-life telecom base station power monitors. |
| Integrated LDO powered from +IN | Removes need for separate supply rail - reduces BOM count and layout complexity in high-side sensing designs. |
| Output clamping at 5.6 V | Prevents ADC overvoltage damage during transient overload or shunt fault conditions - enhances system robustness. |
| 250 mV max differential input range | Supports standard 10 mΩ–100 mΩ shunts at up to 25 A - covers most unidirectional motor and PA bias current ranges. |
| 80 V survival rating (0 V to 85 V) | Withstands load dump and inductive kick events in automotive-adjacent industrial power systems without latch-up. |
Applications
| 48 V Telecom Power Monitoring | Unidirectional Motor Control |
|---|---|
|
Use Scenario: Real-time current monitoring of DC-DC converters and hot-swap controllers in 48 V telecom distribution systems. IC Role / Device Role / Timing Role: High-side current shunt monitor providing ground-referenced analog output proportional to load current. Use Value: Enables precise power budgeting and fault detection with <±0.35% gain error over temperature - critical for N+1 redundant power systems. |
Use Scenario: Sensing phase current in brushed DC or stepper motor drivers where current flows only in one direction. IC Role / Device Role / Timing Role: Unidirectional current amplifier converting shunt voltage to ADC-compatible signal with minimal latency. Use Value: 500 kHz bandwidth captures PWM ripple; zero-drift architecture ensures stable torque control across ambient temperature swings. |
| Base Station Power Amplifier Bias | Precision High-Voltage Current Sources |
|
Use Scenario: Monitoring quiescent current of RF power amplifiers in cellular base stations to maintain linearity and efficiency. IC Role / Device Role / Timing Role: High-CMRR current sensor rejecting RF coupling and supply noise while delivering stable bias feedback. Use Value: 100 dB CMRR at dc and >90 dB at 100 kHz suppresses switching noise - improves EVM and spectral purity. |
Use Scenario: Closed-loop regulation of high-stability current sources used in test equipment and optical driver circuits. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with ultra-low drift, referenced to high-voltage compliance rail. Use Value: ±100 μV offset and ±100 nV/°C drift enable sub-0.01% current setting accuracy over industrial temperature range. |
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 |
|---|---|---|---|
| INA240A1QDRQ1 | 20 V/V gain, ±50 μV offset, but requires separate VS supply (2.7 V–5.5 V); no integrated LDO. | Requires dual-supply design; better for low-voltage (<15 V) systems where LDO overhead is unnecessary. | Select when board already provides clean 3.3 V/5 V rail and common-mode voltage is <40 V. |
| MAX4080TASA+ | Fixed 20 V/V gain, 85 V max common-mode, but ±500 μV offset and ±3 μV/°C drift - 30× higher drift than AD8217BRMZ-R7. | Suitable for cost-sensitive, lower-accuracy applications where temperature stability is secondary. | Select only when offset drift tolerance exceeds ±1 μV/°C and 48 V telecom reliability is not required. |
Compared with INA240A1QDRQ1 and MAX4080TASA+, the AD8217BRMZ-R7 uniquely combines LDO-powered operation, ±100 nV/°C drift, and 80 V CM range - making it the only option among the three that eliminates auxiliary supply needs while meeting telecom-grade stability requirements.
Availability
AD8217BRMZ-R7 is available at Aetrix Electronics and suitable for 48 V telecom power monitoring, unidirectional motor control, base station power amplifier bias, and precision high-voltage current source applications requiring stable component supply across extended temperature and high-CM environments.
Supply support for AD8217BRMZ-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, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets.
The AD8217BRMZ-R7 belongs to Analog Devices' precision current sense amplifier product line, engineered specifically for high-accuracy, high-common-mode, single-supply current monitoring in telecom infrastructure and industrial power systems.
FAQ
What is the maximum common-mode voltage the AD8217BRMZ-R7 can withstand continuously?
The AD8217BRMZ-R7 supports a continuous common-mode input voltage range of 4.5 V to 80 V. It also survives transient voltages from 0 V to 85 V - making it suitable for 48 V telecom systems subject to load dump or inductive spikes. This rating is specified in the Absolute Maximum Ratings table and confirmed across all operating temperatures.
Does the AD8217BRMZ-R7 require an external power supply?
No, the AD8217BRMZ-R7 does not require an external power supply. Its internal LDO is powered directly from the +IN pin, drawing bias current from the high-side common-mode rail. As long as the input common-mode voltage is between 4.5 V and 80 V, the AD8217BRMZ-R7 operates autonomously - eliminating the need for auxiliary regulators or isolated supplies.
What is the output voltage limit of the AD8217BRMZ-R7 and why is it clamped?
The AD8217BRMZ-R7 output is clamped to a maximum of 5.6 V. This clamping protects downstream analog-to-digital converters (ADCs) from overvoltage damage during shunt faults or excessive differential inputs. The clamp activates when +IN exceeds 5.6 V; otherwise, the output reaches (V+IN − 100 mV), ensuring safe interfacing with standard 5 V ADC inputs.
Can the AD8217BRMZ-R7 measure bidirectional current?
No, the AD8217BRMZ-R7 is designed exclusively for unidirectional current measurement. Its architecture and output swing (0.01 V to 5 V) assume positive differential input only (0 mV to 250 mV). For bidirectional sensing, Analog Devices recommends the AD8210 or AD8418 - devices with symmetric output ranges and dedicated negative-input capability.
What package type and footprint does the AD8217BRMZ-R7 use?
The AD8217BRMZ-R7 uses an 8-lead Mini Small Outline Package (MSOP), designated RM-8 per JEDEC MO-187-AA. Its dimensions are 3.0 mm × 3.0 mm × 1.1 mm, with 0.65 mm pitch and exposed pad not present. This compact, surface-mount package supports automated assembly and thermal performance adequate for industrial power monitoring applications.
AD8217BRMZ-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:
- ±0.1%
- Voltage - Input:
- 4.5V ~ 80V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
AD8217BRMZ-R7 FAQ
1.How can I place an order for AD8217BRMZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8217BRMZ-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 AD8217BRMZ-R7 reliable?
The price and inventory of AD8217BRMZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8217BRMZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8217BRMZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8217BRMZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8217BRMZ-R7?
AD8217BRMZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8217BRMZ-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 AD8217BRMZ-R7?
For technical support, including AD8217BRMZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8217BRMZ-R7 requirements.
6.How does Aetrix verify that AD8217BRMZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8217BRMZ-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 AD8217BRMZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8217BRMZ-R7?
All AD8217BRMZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8217BRMZ-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 AD8217BRMZ-R7 part is unused and in its original packaging.
Return procedure for AD8217BRMZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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