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Analog Devices Inc. AD8544ARZ-REEL
- Part No.:
- AD8544ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8544ARZ-REEL.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,853
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Product details
Overview
AD8544ARZ-REEL from Analog Devices is a quad-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-power, single-supply operation from 2.7 V to 5.5 V. It delivers 1 MHz gain bandwidth, 45 µA per amplifier supply current, and 4 pA typical input bias current, enabling high-impedance sensor interfacing in portable medical and industrial instrumentation.
For engineers reviewing the AD8544ARZ-REEL datasheet, AD8544ARZ-REEL pinout, AD8544ARZ-REEL application, or AD8544ARZ-REEL equivalent, key selection criteria include rail-to-rail output swing within 100 mV of rails at 1 mA load, −40°C to +125°C extended temperature operation, and AEC-Q100 qualification for automotive signal conditioning.
Technical Context
The AD8544ARZ-REEL implements a CMOS input stage with rail-to-rail common-mode input range (0 V to VS) and rail-to-rail output swing (within 100 mV of rails at 1 mA), supporting direct ASIC buffering and photodiode transimpedance amplification without level-shifting circuitry. Its 1 MHz gain bandwidth and 0.75 V/µs slew rate enable stable unity-gain operation in active filters and precision DC-coupled gain stages.
Designed for battery-powered systems, it maintains 500 V/mV large-signal voltage gain at 2.7 V supply while consuming only 45 µA per amplifier - a 3× reduction versus legacy general-purpose op amps. Input offset voltage drift is specified at 4 µV/°C over −40°C to +125°C, ensuring stability in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct integration into Li-ion and 3.3 V logic systems without regulators. |
| Gain Bandwidth Product | 1 MHz - enables stable unity-gain buffers and 2nd-order active filters up to ~100 kHz. |
| Supply Current per Amplifier | 45 µA typ - allows four independent channels in <200 µA total, ideal for multi-sensor battery nodes. |
| Input Bias Current | 4 pA typ - permits use with >10 MΩ source impedances (e.g., piezoelectric sensors, pH electrodes). |
| Input/Output Rail-to-Rail | Full swing from 0 V to VS - eliminates need for dual supplies in single-rail data acquisition front-ends. |
| Operating Temperature | −40°C to +125°C - qualified for engine control units, ADAS sensor modules, and industrial PLC I/O. |
| Offset Voltage Drift | 4 µV/°C - ensures <0.5 mV total drift across full temperature range, critical for precision DC amplification. |
Pinout & Package
AD8544ARZ-REEL is housed in a 14-lead narrow SOIC (SOIC_N) package (R-14), 3.9 mm × 8.7 mm body size, with standard 1.27 mm lead pitch and RoHS-compliant matte tin finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node for feedback networks; accepts signals down to GND. |
| 2 | Non-Inverting Input (Amplifier A) | Accepts rail-to-rail common-mode inputs; used for sensor reference or buffer configuration. |
| 3 | Output (Amplifier A) | Delivers rail-to-rail output swing; capable of sourcing/sinking 15–30 mA depending on supply. |
| 4 | Ground (GND) | Common return path for all four amplifiers; requires low-impedance PCB connection. |
| 5 | Inverting Input (Amplifier B) | Independent channel input; electrically isolated from other amplifiers in same die. |
| 6 | Non-Inverting Input (Amplifier B) | Supports differential or single-ended configurations without crosstalk. |
| 7 | Output (Amplifier B) | Provides full 0 V to VS swing; compatible with ADC input ranges and LED drivers. |
| 8 | VS (Positive Supply) | Single 2.7–5.5 V supply input; decoupling capacitor required at pin for stability. |
| 9 | Inverting Input (Amplifier C) | Enables three-channel simultaneous signal conditioning (e.g., 3-axis sensor interface). |
| 10 | Non-Inverting Input (Amplifier C) | Allows independent gain setting per channel; no shared bias network required. |
| 11 | Output (Amplifier C) | Drives analog multiplexers or low-power displays with minimal headroom loss. |
| 12 | Inverting Input (Amplifier D) | Supports fourth channel for reference buffering or diagnostic monitoring function. |
| 13 | Non-Inverting Input (Amplifier D) | Configurable as unity-gain follower for stable voltage reference distribution. |
| 14 | Output (Amplifier D) | Final output stage; maintains rail-to-rail performance even at 125°C junction temperature. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Prevents output latch-up during input overdrive - essential for sensor fault tolerance in automotive ECUs. |
| AEC-Q100 qualified | Validated for automotive Grade 1 (−40°C to +125°C) operation with HTOL and ESD testing per JESD47. |
| Rail-to-rail output swing | Delivers ≥2.575 V high-level and ≤100 mV low-level output at 1 mA load on 2.7 V supply - maximizes dynamic range. |
| Low input bias current | 4 pA typical enables accurate amplification of nanoamp-level photodiode or ion-selective electrode currents. |
| Unity-gain stable | Operates without external compensation in buffer, integrator, or transimpedance configurations - reduces BOM count. |
| Low noise density | 42 nV/√Hz at 1 kHz - suitable for low-frequency biosignal acquisition (ECG, EEG) without added filtering. |
Applications
| Medical Instrumentation | Sensor Interface |
|---|---|
Use Scenario: Amplifying low-amplitude bio-potential signals (e.g., ECG leads) in portable patient monitors. IC Role / Device Role / Timing Role: Quad-channel instrumentation amplifier front-end providing simultaneous differential gain, filtering, and level-shifting. Use Value: 4 pA input bias current prevents signal corruption from high-impedance electrode interfaces; rail-to-rail output drives 12-bit SAR ADCs directly. |
Use Scenario: Conditioning outputs from MEMS accelerometers and pressure sensors in industrial IoT nodes. IC Role / Device Role / Timing Role: Signal conditioner converting mV-level sensor outputs to 0–3.3 V ratiometric ranges for microcontroller ADCs. Use Value: 1 MHz bandwidth supports anti-aliasing filter design up to 100 kHz; 45 µA per amplifier enables 4-sensor fusion on coin-cell power. |
| Automotive Sensor Module | Piezoelectric Transducer System |
Use Scenario: Signal conditioning for exhaust gas oxygen (EGO) sensors and cabin air quality detectors in engine control units. IC Role / Device Role / Timing Role: Precision amplifier for analog sensor outputs requiring AEC-Q100 compliance and extended temperature operation. Use Value: −40°C to +125°C rating and 4 µV/°C offset drift ensure accuracy across thermal cycling; no phase reversal prevents false fault triggers. |
Use Scenario: Charge amplification of high-impedance piezoelectric vibration sensors in predictive maintenance equipment. IC Role / Device Role / Timing Role: Low-bias-current transimpedance amplifier converting pC-level charge pulses to measurable voltage. Use Value: 4 pA input bias current minimizes baseline drift in long-duration measurements; rail-to-rail input accepts ±10 V sensor swings via resistive attenuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher supply current (550 µA/amplifier), lower GBW (6.4 MHz), no AEC-Q100 qualification. | Better for higher-speed AC-coupled audio; unsuitable for automotive or ultra-low-power designs. | Select when speed >1 MHz is required and AEC-Q100 compliance is not mandatory. |
| MCP6004-E/SL | Lower GBW (1 MHz), higher input bias current (1 pA max but 100x higher typical), no extended temp support (−40°C to +85°C only). | Cost-optimized for consumer portables; lacks automotive reliability validation and 125°C operation. | Choose for cost-sensitive non-automotive applications where 125°C operation and AEC-Q100 are unnecessary. |
Compared with TLV2464IDR and MCP6004-E/SL, AD8544ARZ-REEL uniquely combines AEC-Q100 qualification, 4 pA input bias current, and 45 µA supply current in a quad configuration - making it the only option for automotive-grade, ultra-low-power, high-impedance sensor signal chains requiring full temperature coverage.
Availability
AD8544ARZ-REEL is available at Aetrix Electronics and suitable for medical instrumentation, automotive sensor modules, and industrial IoT edge nodes requiring stable component supply across extended temperature and long product lifecycles.
Supply support for AD8544ARZ-REEL 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 AD854x family was designed specifically for low-power, rail-to-rail signal conditioning in battery-operated and automotive systems - emphasizing precision, reliability, and wide supply voltage flexibility.
FAQ
What is the maximum operating temperature for AD8544ARZ-REEL?
The AD8544ARZ-REEL is rated for continuous operation from −40°C to +125°C, meeting extended industrial and automotive Grade 1 requirements. This specification is validated per AEC-Q100 stress tests including high-temperature operating life (HTOL) and temperature cycling, ensuring reliability in under-hood and industrial control environments where the AD8544ARZ-REEL operates without derating.
Does AD8544ARZ-REEL support rail-to-rail input and output simultaneously?
Yes, AD8544ARZ-REEL supports true rail-to-rail input (common-mode range from 0 V to VS) and rail-to-rail output (swing within 100 mV of both rails at 1 mA load) across its full supply range (2.7 V to 5.5 V). This capability is confirmed in the Electrical Characteristics tables for VOH/VOL and input voltage range parameters at 2.7 V, 3.0 V, and 5.0 V supplies - enabling direct interfacing with ASICs and ADCs in single-supply systems without level shifters.
Is AD8544ARZ-REEL pin-compatible with other AD854x variants?
No, AD8544ARZ-REEL is not pin-compatible with AD8541 or AD8542 due to differing channel counts and package footprints: AD8544ARZ-REEL uses a 14-lead SOIC (R-14), whereas AD8541 is 5- or 8-lead and AD8542 is 8-lead. Pinouts are defined per package type in Figures 2–4 of the datasheet; substitution requires PCB layout revision. The AD8544ARZ-REEL shares pinout only with other AD8544 variants in R-14 packaging (e.g., AD8544ARZ, AD8544ARZ-REEL7).
What is the typical input bias current of AD8544ARZ-REEL and why does it matter?
The typical input bias current of AD8544ARZ-REEL is 4 pA at 25°C, with a maximum of 1000 pA over −40°C to +125°C. This ultra-low value enables accurate amplification of signals from high-impedance sources such as photodiodes, piezoelectric transducers, and pH electrodes - where even nanoamp-level leakage would introduce significant offset or drift. In a 10 MΩ photodiode application, 4 pA bias current contributes only 40 mV error, versus >400 mV with typical 100 nA op amps.
Can AD8544ARZ-REEL be used as a comparator?
Yes, AD8544ARZ-REEL can function as a comparator in overload detection or threshold-sensing applications, leveraging its rail-to-rail input/output, 5 µs propagation delay at 5 V, and built-in hysteresis capability via external feedback. However, it lacks dedicated comparator features like internal hysteresis or open-collector output; for high-speed or precision comparator use, Analog Devices recommends dedicated comparators such as the ADCMP341. The AD8544ARZ-REEL's comparator mode is validated in Figure 39 of the datasheet.
AD8544ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.92V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 45µA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
AD8544ARZ-REEL FAQ
1.How can I place an order for AD8544ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8544ARZ-REEL 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 AD8544ARZ-REEL reliable?
The price and inventory of AD8544ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8544ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8544ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8544ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8544ARZ-REEL?
AD8544ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8544ARZ-REEL 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 AD8544ARZ-REEL?
For technical support, including AD8544ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8544ARZ-REEL requirements.
6.How does Aetrix verify that AD8544ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8544ARZ-REEL 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 AD8544ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8544ARZ-REEL?
All AD8544ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8544ARZ-REEL, 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 AD8544ARZ-REEL part is unused and in its original packaging.
Return procedure for AD8544ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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