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Analog Devices Inc. AD8203YRZ-RL
- Part No.:
- AD8203YRZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8203YRZ-RL.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,742
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Product details
Overview
AD8203YRZ-RL from Analog Devices is a single-supply, high common-mode voltage difference amplifier optimized for automotive current sensing in battery-supply circuits. It delivers 14× system gain, −6 V to +30 V input common-mode range at 5 V supply, 80 dB minimum CMRR (dc–10 kHz), and operates across −40°C to +125°C. It is used in diesel injection control and adaptive suspension systems where precision amplification of mV-level shunt voltages occurs amid harsh battery rail transients.
For engineers reviewing the AD8203YRZ-RL datasheet, AD8203YRZ-RL pinout, AD8203YRZ-RL application, or AD8203YRZ-RL equivalent, this page provides verified specifications, SOIC-8 package layout, functional block context, real-world automotive use cases, and two validated alternative parts with documented technical and application differences.
Technical Context
The AD8203YRZ-RL implements a two-stage architecture: a ×7 preamplifier with dynamic bridge common-mode rejection and a ×2 output buffer, yielding fixed 14× composite gain. Its input network attenuates both differential and common-mode signals to keep internal nodes within supply rails while extending CMV range beyond VS and below GND.
Pin 3 provides access to the preamplifier output via a 100 kΩ series resistor-enabling external low-pass filtering and gain adjustment without affecting bandwidth. The device features ratio-trimmed thin-film resistors for high accuracy and includes ESD protection rated to 4 kV HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| System Gain | 14 V/V nominal; enables direct interface to 10-bit ADCs with 50 mV shunt drops at 10 A. |
| Common-Mode Range | −6 V to +30 V at 5 V supply; supports operation on 12 V/24 V battery rails with reverse-battery and load-dump tolerance. |
| CMRR | ≥80 dB dc to 10 kHz; rejects engine noise and alternator ripple in transmission control modules. |
| Input Offset Voltage | ±2 µV RTI max (SOIC); ensures ≤0.14 mV error in 100 mΩ shunt-based 10 A sensing. |
| Supply Range | 3.5 V to 12 V; compatible with automotive 5 V LDOs and unregulated battery inputs. |
| Operating Temperature | −40°C to +125°C; qualified for under-hood placement per AEC-Q100 stress test requirements. |
| Quiescent Current | 0.25–1.0 mA over temperature; enables always-on current monitoring in low-power ECU sleep modes. |
Pinout & Package
AD8203YRZ-RL is housed in an 8-lead SOIC package (body width 3.9 mm, lead pitch 1.27 mm), RoHS-compliant and moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Inverting input terminal | Connects to low-side shunt node; accepts common-mode voltages down to −6 V. |
| 2 (GND) | Analog ground reference | System ground return for bias currents and output stage; must be star-connected near shunt. |
| 3 (A1) | Preamplifier output node | 100 kΩ series resistor output; used for external RC filter or gain adjustment before buffer stage. |
| 4 (A2) | Buffer amplifier inverting input | High-impedance input tied to Pin 3 for standard 14× gain; externally adjustable for custom gain. |
| 5 (OUT) | Final buffered output | Rail-to-rail capable (0.04 V to 4.8 V at 5 V supply); drives ADC inputs or comparator thresholds directly. |
| 6 (NC) | No-connect terminal | Internally unconnected; must remain floating-no PCB trace or solder mask opening required. |
| 7 (+VS) | Positive supply input | Accepts 3.5–12 V; requires local 100 nF ceramic decoupling placed ≤2 mm from pin. |
| 8 (+IN) | Non-inverting input terminal | Connects to high-side shunt node; matches −IN impedance for optimal CMRR performance. |
Key Features
| Feature | Design Value |
|---|---|
| Extended common-mode range | Operates with inputs 6 V below GND or 25 V above 5 V supply-eliminates need for level-shifting circuitry in battery-monitoring designs. |
| Externally configurable gain | Gain adjustable from <7× to >50× using resistors on Pin 3/Pin 4-supports flexible shunt calibration without redesigning signal chain. |
| Integrated low-pass filter node | Pin 3 provides dedicated 100 kΩ output impedance for 1-pole or 2-pole RC filtering-reduces EMI susceptibility before ADC sampling. |
| Automotive-grade drift performance | ±20 ppm/°C gain drift and ±10 µV/°C offset drift (SOIC) ensure stable 0.5% full-scale accuracy over full temperature range. |
| Robust input protection | Withstands 44 V transient input (400 ms) and continuous ±35 V CMV-survives jump-start and load-dump events without latch-up. |
Applications
| Transmission Control | Diesel Injection Control |
|---|---|
|
Use Scenario: Monitoring clutch solenoid coil current during gear shift actuation in automatic transmissions. IC Role / Device Role / Timing Role: Difference amplifier conditioning mV-level shunt voltage while rejecting 12 V battery rail noise and PWM switching spikes. Use Value: Enables closed-loop current regulation with <1% error across −40°C to +125°C, improving shift smoothness and durability. |
Use Scenario: Measuring high-side fuel injector driver current in common-rail diesel engines. IC Role / Device Role / Timing Role: Amplifying 20–100 mV differential voltage across 0.5 mΩ shunt with −6 V to +30 V CMV tolerance during cranking. Use Value: Supports precise fuel metering at 10 kHz PWM frequencies with 80 dB CMRR maintaining signal integrity. |
| Engine Management | Adaptive Suspension Control |
|
Use Scenario: Sensing starter motor current during cold-engine cranking to detect battery health and engagement faults. IC Role / Device Role / Timing Role: High-line current sensor operating at −6 V CMV (below GND) during negative battery transients. Use Value: Delivers reliable diagnostics without external clamping diodes or isolated supplies-reducing BOM count by 3 components. |
Use Scenario: Monitoring electromagnetic damper coil current in real-time semi-active suspension systems. IC Role / Device Role / Timing Role: Low-drift difference amplifier feeding 1 MSPS SAR ADC for 100 µs control loop updates. Use Value: Maintains <0.2% gain error over temperature, enabling repeatable damping force response across vehicle lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9928FAUA+ | Fixed 50× gain; 2.7–5.5 V supply; 70 dB CMRR @ 10 kHz; 8-lead µMAX package. | Better suited for low-voltage, high-gain shunt sensing (e.g., 3.3 V ECUs), but lacks extended −6 V CMV capability. | Select when system supply is ≤5.5 V and common-mode stays ≥0 V; not suitable for battery-negative sensing. |
| INA199A1DCKR | Single-stage 50× gain; 2.7–26 V supply; 100 dB CMRR @ dc; 6-lead SC70 package; no external filter node. | Higher CMRR and wider supply range, but no accessible preamp output-limits filtering flexibility in noisy environments. | Choose for space-constrained designs needing best-in-class dc CMRR, but avoid when 100 kΩ filter node is required for EMI suppression. |
Compared with MAX9928FAUA+ and INA199A1DCKR, AD8203YRZ-RL uniquely combines −6 V to +30 V CMV range, 100 kΩ filter-access node, and AEC-Q100-qualified SOIC packaging-making it the only option for robust, filterable, battery-rail-referenced current sensing in powertrain control units.
Availability
AD8203YRZ-RL is available at Aetrix Electronics and suitable for transmission control, diesel injection control, and engine management systems requiring stable component supply across automotive production lifecycles.
Supply support for AD8203YRZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The AD8203 belongs to Analog Devices' precision difference amplifier product line, engineered specifically for automotive current sensing where wide common-mode range, low drift, and system-level noise immunity are critical.
FAQ
What is the maximum common-mode voltage the AD8203YRZ-RL can handle?
The AD8203YRZ-RL supports a continuous common-mode voltage range of −6 V to +30 V when operated at a 5 V supply. This allows direct connection to 12 V and 24 V automotive battery rails-including operation below ground during negative transients-and withstands up to 44 V for 400 ms during load-dump events. These ratings are guaranteed across the full −40°C to +125°C temperature range.
Can the gain of the AD8203YRZ-RL be adjusted, and how?
Yes, the AD8203YRZ-RL gain is adjustable via external resistors. Connecting a resistor from Pin 3 (A1) to GND lowers gain (e.g., 100 kΩ yields ×7). Connecting a resistor from Pin 5 (OUT) to Pin 4 (A2) raises gain (e.g., 200 kΩ yields ×28). The AD8203YRZ-RL datasheet provides exact formulas and stability guidance for gains from <7× to >50×, preserving bandwidth and minimizing offset errors.
Is the AD8203YRZ-RL qualified for automotive applications?
Yes, the AD8203YRZ-RL is AEC-Q100 qualified for Grade 1 (−40°C to +125°C) operation and designed for automotive powertrain and chassis systems. Its SOIC-8 package, extended temperature range, 44 V transient tolerance, and tested CMRR performance meet stringent OEM requirements for transmission control, diesel injection, and adaptive suspension modules.
What is the purpose of the 100 kΩ resistor on Pin 3 of the AD8203YRZ-RL?
The 100 kΩ resistor on Pin 3 provides controlled output impedance from the preamplifier stage, enabling straightforward implementation of 1-pole or 2-pole RC low-pass filters before the output buffer. This allows designers to suppress high-frequency noise (e.g., PWM switching artifacts or RF interference) without degrading dc accuracy-critical in engine management and transmission control applications where signal fidelity determines control loop stability.
Does the AD8203YRZ-RL require external passive components for basic operation?
No, the AD8203YRZ-RL operates fully functional with only power supply decoupling: a 100 nF ceramic capacitor placed ≤2 mm from Pin 7 (+VS) and proper grounding of Pin 2 (GND). All precision resistors are monolithically trimmed on-die. External components are optional-used only for gain adjustment, filtering, or offset trimming-and do not affect baseline functionality or specification compliance.
AD8203YRZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.330V/µs
- Gain Bandwidth Product:
- 60 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 40 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 250µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3.5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8203YRZ-RL FAQ
1.How can I place an order for AD8203YRZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8203YRZ-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 AD8203YRZ-RL reliable?
The price and inventory of AD8203YRZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8203YRZ-RL is usually 5 days.
3.What payment methods are accepted for AD8203YRZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8203YRZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8203YRZ-RL?
AD8203YRZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8203YRZ-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 AD8203YRZ-RL?
For technical support, including AD8203YRZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8203YRZ-RL requirements.
6.How does Aetrix verify that AD8203YRZ-RL is sourced from the original manufacturer or authorized distributors?
All AD8203YRZ-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 AD8203YRZ-RL meets industry standards.
7.What is the process for return or replacement of AD8203YRZ-RL?
All AD8203YRZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with AD8203YRZ-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 AD8203YRZ-RL part is unused and in its original packaging.
Return procedure for AD8203YRZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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