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Analog Devices Inc. AD8542ARUZ
- Part No.:
- AD8542ARUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8542ARUZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,778
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Product details
Overview
AD8542ARUZ from Analog Devices is a dual-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 AD8542ARUZ datasheet, AD8542ARUZ pinout, AD8542ARUZ application, or AD8542ARUZ equivalent, key selection criteria include its AEC-Q100 qualification, −40°C to +125°C operating range, rail-to-rail output swing within 100 mV of rails at 1 mA load, and verified performance in photodiode amplifiers and ASIC buffering circuits.
Technical Context
The AD8542ARUZ employs a CMOS input stage with no phase reversal, supporting rail-to-rail common-mode input voltage (0 V to VS) and output swing (within 100 mV of rails). Its unity-gain stable architecture achieves 67° phase margin at 5 V, enabling robust operation in active filters and gain stages without external compensation.
It features low-voltage optimization: GBP remains near 1 MHz at 2.7 V, large-signal voltage gain exceeds 500 V/mV at 25°C, and output current capability reaches 30 mA at 5 V (1 V from rail), sustaining performance across automotive and extended industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - Enables direct integration into 3.3 V and 5 V battery-powered systems without level-shifting. |
| Supply Current per Amplifier | 45 µA typ. at 5 V - Supports >1-year battery life in always-on sensor nodes with dual-channel signal conditioning. |
| Gain Bandwidth Product | 1 MHz - Sufficient for anti-aliasing filters, audio preamps, and 60 Hz notch filter implementations up to Q = 10. |
| Input Bias Current | 4 pA typ. - Permits use with >10 MΩ source impedances (e.g., piezoelectric sensors, photodiodes) without significant offset error. |
| Input/Output Rail-to-Rail | Yes - Maximizes dynamic range in single-supply ASIC interfaces and portable system analog front-ends. |
| Operating Temperature | −40°C to +125°C - Qualified for under-hood automotive and industrial control environments without derating. |
| AEC-Q100 Grade | Qualified - Meets stress test requirements for automotive electronics, including HTOL and TC024. |
Pinout & Package
AD8542ARUZ is housed in an 8-lead TSSOP package (RU-8), 3.0 mm × 3.0 mm footprint, 0.65 mm lead pitch, with exposed pad for thermal enhancement. Pin 1 marked by dot; pins numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (A) | High-impedance node for feedback networks; accepts rail-to-rail common-mode voltage (0 V to VS). |
| 2 | Non-Inverting Input (A) | High-impedance sensor interface point; 4 pA bias current minimizes loading on high-Z sources. |
| 3 | Output (A) | Rail-to-rail output capable of sourcing/sinking 30 mA at 5 V (1 V from rail); drives 100 kΩ loads with <1 mV error. |
| 4 | V– (GND) | Power ground reference; requires low-impedance connection to minimize PSRR degradation and noise coupling. |
| 5 | V+ (VS) | Positive supply input; supports 2.7–5.5 V operation; decoupling capacitor (0.1 µF) required within 5 mm. |
| 6 | Non-Inverting Input (B) | Independent second channel input; identical specs to Channel A; enables dual-sensor signal conditioning. |
| 7 | Inverting Input (B) | Second channel feedback node; supports independent gain configuration per channel without crosstalk. |
| 8 | Output (B) | Second rail-to-rail output; matched DC/AC performance to Channel A; usable for differential output stages or dual-path filtering. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Eliminates output latch-up when input exceeds supply rails-critical for sensor overvoltage transients in industrial field devices. |
| 4 pA input bias current | Enables accurate integration and photodiode current-to-voltage conversion without guard-ring PCB layout or bias current cancellation resistors. |
| Rail-to-rail I/O at 2.7 V | Maintains full output swing (2.6 Vpp at 2.7 V) and input range (0–2.7 V) even at minimum supply-essential for low-voltage portable designs. |
| AEC-Q100 qualified | Validated for automotive applications including body control modules and battery management sensor interfaces per Rev H datasheet. |
| 1 MHz bandwidth at 45 µA | Delivers 10× lower power than legacy 1 MHz op-amps (e.g., LM358), enabling dual-channel active filtering in space-constrained wearables. |
Applications
| Medical Sensor Interface | Piezoelectric Transducer Signal Chain |
|---|---|
|
Use Scenario: Amplifying low-level signals from ECG electrodes or blood pressure sensors in portable diagnostic devices. IC Role / Device Role / Timing Role: Dual-channel buffer and gain stage; Channel A conditions electrode signal, Channel B references right-leg drive. Use Value: 4 pA input bias current prevents electrode polarization drift; rail-to-rail output maximizes ADC dynamic range at 3.3 V supply. |
Use Scenario: Conditioning high-impedance outputs from vibration or impact sensors in predictive maintenance systems. IC Role / Device Role / Timing Role: Charge amplifier and active low-pass filter; converts piezoelectric charge to stable voltage with 1 MHz bandwidth. Use Value: No phase reversal prevents output saturation during mechanical shock events; 45 µA quiescent current extends battery life in wireless nodes. |
| Automotive Cabin Air Quality Monitor | Portable Audio Line Driver |
|
Use Scenario: Signal conditioning for CO₂ and VOC sensors in HVAC control units requiring AEC-Q100 compliance. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier and reference buffer; handles sensor current outputs and reference voltage stability. Use Value: −40°C to +125°C operation ensures reliability in dashboard-mounted units; 125 mV max VOL at 125°C maintains logic compatibility. |
Use Scenario: Driving stereo headphone outputs or line-level signals in Bluetooth speakers and portable media players. IC Role / Device Role / Timing Role: Dual-output line driver with rail-to-rail swing; Channel A drives left channel, Channel B drives right channel. Use Value: 30 mA output current supports 16 Ω headphones directly; 42 nV/√Hz voltage noise preserves audio SNR below 10 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel rail-to-rail amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6022-I/SN | Higher supply current (100 µA), lower GBP (10 MHz), no AEC-Q100 qualification. | Preferred for cost-sensitive consumer audio where automotive qualification is unnecessary. | Select MCP6022-I/SN only if higher speed is required and AEC-Q100 compliance is not mandated. |
| TSV912IDT | Lower input bias current (1 pA), wider supply range (2.7–36 V), but higher noise (24 nV/√Hz) and no AEC-Q100. | Better suited for precision industrial sensors requiring ultra-low bias current above 5 V supply. | Choose TSV912IDT for high-voltage (>12 V) or ultra-low-bias applications; avoid for automotive due to missing qualification. |
Compared with MCP6022-I/SN and TSV912IDT, AD8542ARUZ uniquely balances ultra-low power (45 µA), AEC-Q100 qualification, and verified 1 MHz performance at 2.7 V-making it the optimal choice for dual-channel signal conditioning in battery-powered automotive and medical edge devices.
Availability
AD8542ARUZ is available at Aetrix Electronics and suitable for medical instrumentation, automotive cabin sensors, and portable audio systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8542ARUZ 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, robustness, and wide supply voltage tolerance.
FAQ
What is the maximum operating temperature for AD8542ARUZ?
The AD8542ARUZ is specified for continuous operation from −40°C to +125°C across its full electrical performance envelope. This extended industrial temperature range is validated per the Rev H datasheet and supports deployment in engine bay sensors, industrial PLCs, and portable medical devices exposed to ambient thermal extremes without derating.
Does AD8542ARUZ support true rail-to-rail output at 2.7 V supply?
Yes, AD8542ARUZ delivers rail-to-rail output swing at 2.7 V: VOH ≥ 2.55 V and VOL ≤ 125 mV at IL = 1 mA and TA = 125°C. This enables full utilization of the 2.7 V supply's dynamic range in low-voltage portable systems, confirmed in Table 1 of the Rev H datasheet.
Is AD8542ARUZ pin-compatible with other AD854x variants?
No-AD8542ARUZ (8-lead TSSOP, RU-8) has a different pinout than AD8542ARMZ (8-lead MSOP, RM-8) and AD8542ARZ (8-lead SOIC, R-8), despite sharing identical electrical functionality. Mechanical incompatibility requires PCB redesign when substituting packages; refer to Figures 2–4 in the datasheet for exact pin mappings.
Can AD8542ARUZ be used as a comparator?
Yes, AD8542ARUZ can function as a comparator in overload detection and threshold-sensing applications, leveraging its rail-to-rail inputs/outputs and 5 µs propagation delay at 5 V. However, it lacks internal hysteresis; external resistor feedback (e.g., R2 in Figure 39) must be added to prevent oscillation near trip points.
What is the typical input offset voltage drift of AD8542ARUZ over temperature?
The AD8542ARUZ exhibits a typical input offset voltage drift of 4 µV/°C across −40°C to +125°C, as specified in Tables 1–3 of the Rev H datasheet. This low drift supports stable DC-coupled gain stages in precision sensor interfaces where calibration intervals exceed 6 months.
AD8542ARUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 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:
- 8-TSSOP
AD8542ARUZ FAQ
1.How can I place an order for AD8542ARUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8542ARUZ 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 AD8542ARUZ reliable?
The price and inventory of AD8542ARUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8542ARUZ is usually 5 days.
3.What payment methods are accepted for AD8542ARUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8542ARUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8542ARUZ?
AD8542ARUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8542ARUZ 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 AD8542ARUZ?
For technical support, including AD8542ARUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8542ARUZ requirements.
6.How does Aetrix verify that AD8542ARUZ is sourced from the original manufacturer or authorized distributors?
All AD8542ARUZ 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 AD8542ARUZ meets industry standards.
7.What is the process for return or replacement of AD8542ARUZ?
All AD8542ARUZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8542ARUZ, 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 AD8542ARUZ part is unused and in its original packaging.
Return procedure for AD8542ARUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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