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Analog Devices Inc. AD8206WHRZ
- Part No.:
- AD8206WHRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8206WHRZ.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,031
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Product details
Overview
AD8206WHRZ from Analog Devices is a high common-mode voltage, bidirectional current shunt amplifier optimized for automotive high-side current sensing in solenoid and motor control systems. It features 20 V/V gain, −2 V to +65 V operating common-mode range, ±4.5 mV total offset error over temperature, 80 dB CMRR (dc to 20 kHz), and operates from −40°C to +150°C. Used in diesel-injection controls and transmission controls where precision under extreme thermal stress is critical.
For engineers reviewing the AD8206WHRZ datasheet, AD8206WHRZ pinout, AD8206WHRZ application, or AD8206WHRZ equivalent, this page delivers verified specifications, SOIC-8 terminal mapping, WH-grade thermal performance context, output offset adjustment methods, and automotive-qualified alternatives aligned with AEC-Q100-relevant use cases.
Technical Context
The AD8206WHRZ implements a two-stage difference amplifier architecture with precision laser-trimmed resistor networks (matching <0.01%) enabling 80 dB CMRR up to 20 kHz. Its input attenuators (1/16.7 ratio) scale high common-mode voltages into the internal op-amp's safe input range while preserving differential signal integrity.
Output offset is programmable via dual VREF pins supporting ratiometric half-scale (VREF1=V+, VREF2=GND), ground-referenced (both VREF=GND), or V+-referenced (both VREF=V+) configurations - enabling unidirectional or bidirectional current measurement without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V with ±1.2% accuracy over −40°C to +150°C - ensures stable current-to-voltage scaling across full automotive thermal envelope. |
| Common-Mode Range | −2 V to +65 V continuous - supports direct high-side sensing on 12 V/24 V/42 V battery rails with transient survival to +75 V. |
| Offset Error | ±4.5 mV max over temperature (RTI) - limits current measurement error to ≤±225 µA on 20 mΩ shunt at 25°C calibration. |
| CMRR | 76–80 dB (dc to 20 kHz) - rejects noise from PWM switching edges and load transients in motor/solenoid drivers. |
| Bandwidth | 100 kHz small-signal −3 dB - captures fast current changes during solenoid actuation or H-bridge commutation. |
| Quiescent Current | 2.2 mA at +150°C - enables low-power operation in always-on vehicle subsystems without thermal derating. |
| Output Range | 0.08 V to 4.65 V (VS = 5 V, RL = 25 kΩ) - provides 4.57 V dynamic range for 12-bit ADC interfacing with margin. |
Pinout & Package
AD8206WHRZ is housed in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, 3.9 mm × 4.9 mm body, 1.27 mm pitch, with gull-wing leads and RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Inverting input | Connects to shunt resistor low side; accepts differential voltage up to ±125 mV with common-mode rejection. |
| 2 (GND) | Analog ground reference | System ground return for internal bias and output stage; must be low-impedance path to minimize noise coupling. |
| 3 (VREF2) | Offset reference input | Paired with VREF1 to set output DC level; tied to GND/V+/external reference to configure unidirectional or bidirectional mode. |
| 4 (NC) | No connect | Internally unconnected; must remain floating - no PCB trace or solder mask opening required. |
| 5 (OUT) | Amplified output | Single-ended voltage output (0.08–4.65 V) driving ADC or controller; 2 Ω output impedance supports 25 kΩ minimum load. |
| 6 (V+) | Positive supply | 4.5–5.5 V single supply input; backside potential tied to V+; reverse supply protected to −0.3 V. |
| 7 (VREF1) | Offset reference input | Functionally identical to VREF2; used in parallel or differential configuration with VREF2 for precise ratiometric offset control. |
| 8 (+IN) | Non-inverting input | Connects to shunt resistor high side; enables high-side sensing with common-mode voltage up to +65 V. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional current sensing | Configurable output offset (0.08–4.65 V) enables symmetric ±100 mV input range for H-bridge motor control with zero-crossing detection. |
| Automotive-grade thermal rating | −40°C to +150°C operating range (WH grade) meets under-hood engine compartment requirements without derating. |
| Laser-trimmed resistor network | 0.01% ratio matching ensures ≥76 dB guaranteed CMRR across temperature - critical for accurate PWM-current reconstruction. |
| Programmable output reference | VREF1/VREF2 pins allow ratiometric half-scale offset (V+/2) without external voltage dividers - reduces BOM count and layout area. |
| High common-mode survival | −25 V to +75 V continuous input rating protects against load-dump transients and inductive kickback in 12 V/24 V systems. |
Applications
| Diesel Injection Control | Transmission Control |
|---|---|
Use Scenario: Precise real-time monitoring of solenoid coil current during high-speed fuel injector actuation in Tier 4 diesel engines. IC Role / Device Role / Timing Role: High-side current shunt amplifier converting mV-level shunt voltage to robust 0.08–4.65 V analog output synchronized with 10–20 kHz PWM drive signals. Use Value: Enables closed-loop solenoid current regulation with <±0.5% full-scale error across −40°C to +150°C, improving injection timing accuracy and emissions compliance. | Use Scenario: Measuring clutch engagement current in automatic transmission valve bodies exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: Bidirectional current sensor placed between high-side switch and solenoid, delivering ratiometric output referenced to 5 V supply. Use Value: Supports diagnostic detection of open/short circuits and stuck solenoids using unidirectional ground-referenced output mode during key-off testing. |
| Engine Management System | H-Bridge Motor Control |
Use Scenario: Monitoring variable camshaft timing (VCT) oil control solenoid current in gasoline direct injection engines. IC Role / Device Role / Timing Role: High common-mode amplifier interfacing with 42 V battery rail and surviving load-dump transients up to +75 V. Use Value: Maintains measurement fidelity during cold-cranking (low VBAT) and alternator load dump (high VBAT), ensuring consistent cam phasing control. | Use Scenario: Bidirectional current sensing in electric power steering (EPS) motor H-bridges for torque feedback and overcurrent protection. IC Role / Device Role / Timing Role: Placed across motor shunt to measure forward/reverse current with externally referenced 2.5 V mid-scale output. Use Value: Delivers 100 kHz bandwidth and 15 µV/°C offset drift to support 20 kHz motor commutation without phase lag or thermal drift-induced torque ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high common-mode voltage current shunt amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4080TASA+ | 20 V/V gain, −0.1 V to +65 V common-mode, 125°C max temp, SOIC-8 | Lacks WH-grade 150°C rating; lower CMRR (74 dB) and higher offset drift (25 µV/°C) | Acceptable for under-dash modules but not under-hood engine bay placement. |
| INA240A1QDRQ1 | 20 V/V gain, −4 V to +80 V common-mode, AEC-Q100 Grade 1 (−40°C to +125°C), SOIC-8 | Higher common-mode survival (+80 V), but only rated to +125°C - insufficient for WH-grade thermal margin. | Preferred for 48 V systems requiring extended common-mode range, but requires thermal derating above 125°C. |
Compared with MAX4080TASA+ and INA240A1QDRQ1, AD8206WHRZ uniquely combines AEC-Q100-compliant WH-grade 150°C operation, 80 dB CMRR stability up to 20 kHz, and dual-VREF programmability - making it the only option qualified for direct mounting on diesel engine control units without heatsinking.
Availability
AD8206WHRZ is available at Aetrix Electronics and suitable for diesel-injection controls, transmission controls, and engine management systems requiring stable component supply across extended temperature and automotive lifecycle demands.
Supply support for AD8206WHRZ 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 AD8206 product line delivers precision current sensing ICs engineered specifically for automotive powertrain and chassis control systems, emphasizing high common-mode rejection, extended temperature operation, and robust transient immunity.
FAQ
What is the maximum continuous common-mode voltage the AD8206WHRZ can handle?
The AD8206WHRZ supports a continuous input common-mode voltage range of −2 V to +65 V. Its absolute maximum rating extends to −25 V to +75 V for survival under transient conditions such as load dump or inductive kickback, making it suitable for 12 V, 24 V, and 42 V automotive battery systems. This specification is validated across the full −40°C to +150°C operating range of the AD8206WHRZ.
How does the AD8206WHRZ achieve bidirectional current measurement?
The AD8206WHRZ achieves bidirectional current measurement by allowing programmable output offset via its VREF1 and VREF2 pins. When configured with VREF1 tied to V+ and VREF2 to GND, the output centers at V+/2 (e.g., 2.5 V at 5 V supply), enabling symmetric response to ±100 mV differential inputs. This mid-scale offset permits detection of current flow direction in H-bridge motor control or solenoid reversal without external components - a core capability of the AD8206WHRZ.
Is the AD8206WHRZ pin-compatible with other AD8206 variants like AD8206YRZ?
Yes, the AD8206WHRZ is pin-compatible with all AD8206 variants including AD8206YRZ and AD8206WYRZ, sharing identical 8-lead SOIC_N (R-8) packaging, pinout, and electrical interface. The WH grade differs only in extended temperature qualification (−40°C to +150°C vs. +125°C) and slightly reduced max output voltage (4.65 V vs. 4.7 V at 5 V supply), with no changes to pin function or layout requirements - enabling drop-in replacement in thermally demanding automotive designs.
What is the typical quiescent current of the AD8206WHRZ at maximum operating temperature?
The AD8206WHRZ draws 2.2 mA quiescent current when operating at +150°C with VO = 0.1 V dc, as specified in the Absolute Maximum Ratings table. This value remains stable across the full 4.5 V to 5.5 V supply range and is critical for low-power always-on vehicle subsystems such as engine control units, where thermal management and battery drain must be minimized - a confirmed parameter for the AD8206WHRZ.
Can the AD8206WHRZ be used with supply voltages other than 5 V?
Yes, the AD8206WHRZ operates from 4.5 V to 5.5 V supply voltage, with absolute maximum rating of 12.5 V. While the datasheet specifies key parameters (e.g., output range, offset adjustment) at VS = 5 V, the device maintains functional operation across its rated supply range. Output offset adjustment remains ratiometric - e.g., half-scale output shifts proportionally with supply voltage - preserving accuracy in systems with regulated 4.8 V or 5.2 V rails. This behavior is explicitly documented for the AD8206WHRZ.
AD8206WHRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 100 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 2mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8206WHRZ FAQ
1.How can I place an order for AD8206WHRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8206WHRZ 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 AD8206WHRZ reliable?
The price and inventory of AD8206WHRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8206WHRZ is usually 5 days.
3.What payment methods are accepted for AD8206WHRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8206WHRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8206WHRZ?
AD8206WHRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8206WHRZ 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 AD8206WHRZ?
For technical support, including AD8206WHRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8206WHRZ requirements.
6.How does Aetrix verify that AD8206WHRZ is sourced from the original manufacturer or authorized distributors?
All AD8206WHRZ 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 AD8206WHRZ meets industry standards.
7.What is the process for return or replacement of AD8206WHRZ?
All AD8206WHRZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8206WHRZ, 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 AD8206WHRZ part is unused and in its original packaging.
Return procedure for AD8206WHRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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