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Analog Devices Inc. AD8542ARZ-REEL
- Part No.:
- AD8542ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8542ARZ-REEL.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,715
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Product details
Overview
AD8542ARZ-REEL from Analog Devices is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-power, single-supply operation (2.7 V to 5.5 V), delivering 1 MHz gain bandwidth at just 45 µA per amplifier, with 4 pA input bias current and AEC-Q100 qualification - used in sensor interfaces and portable medical instrumentation.
For engineers reviewing the AD8542ARZ-REEL datasheet, AD8542ARZ-REEL pinout, AD8542ARZ-REEL application, or AD8542ARZ-REEL equivalent, key selection criteria include rail-to-rail I/O swing at 2.7 V, ultra-low input bias current for high-impedance photodiode amplification, thermal stability across –40°C to +125°C, and SOIC-8 packaging compatibility with automated assembly.
Technical Context
The AD8542ARZ-REEL implements a CMOS input stage enabling 4 pA typical input bias current and rail-to-rail common-mode input range (0 V to VS), supporting direct interfacing with ASICs and high-impedance sensors without level-shifting. Its unity-gain stable architecture achieves 1 MHz GBP with 67° phase margin at 5 V, ensuring robustness in active filter and transimpedance configurations.
It features no phase reversal under overdrive, critical for comparator-mode operation, and maintains 30 mA output drive capability within 1 V of the supply rail at 5 V - enabling direct driving of analog inputs in mixed-signal systems without external buffers.
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 regulation. |
| Gain Bandwidth Product | 1 MHz - supports stable closed-loop gain ≥10 at 100 kHz for anti-aliasing and sensor signal conditioning. |
| Input Bias Current | 4 pA typical - permits use with >10 MΩ source impedances (e.g., piezoelectric sensors) without significant offset error. |
| Input/Output Swing | Rail-to-rail - delivers full dynamic range from 0 V to VS, maximizing SNR in single-supply data acquisition stages. |
| Quiescent Current | 45 µA per amplifier - extends battery life in portable ECG monitors and handheld diagnostic tools. |
| Operating Temperature | –40°C to +125°C - meets extended industrial and automotive under-hood requirements without derating. |
| CMRR | 45 dB min (2.7 V) - sufficient for DC-coupled sensor front-ends where common-mode noise is below 10 mV. |
Pinout & Package
AD8542ARZ-REEL is housed in an 8-lead narrow SOIC (R-8) package, 3.9 mm × 4.9 mm, 1.27 mm pitch, RoHS-compliant, tape-and-reel format (2500 units/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output - drives loads up to 30 mA while maintaining rail-to-rail swing at 5 V. |
| 2 | Inverting Input A | High-impedance node (4 pA IB) - requires guarded trace routing in photodiode transimpedance designs. |
| 3 | Non-inverting Input A | Common-mode range: 0 V to VS - accepts signals directly from resistive sensors or DAC outputs. |
| 4 | V– | Ground reference for dual-supply operation or GND in single-supply systems - must be low-impedance. |
| 5 | Non-inverting Input B | Independent high-Z input for second channel - enables dual-sensor buffering on one IC. |
| 6 | Inverting Input B | Matches Pin 2 electrical characteristics - allows matched gain-setting networks for differential pairs. |
| 7 | Output B | Amplifier B output - electrically identical to Pin 1; supports independent signal paths. |
| 8 | V+ | Positive supply rail (2.7–5.5 V) - decoupling capacitor required within 5 mm for stability at 1 MHz. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Prevents latch-up during input overvoltage - essential for comparator-mode overload detection circuits. |
| AEC-Q100 qualified | Validated for automotive cabin and body electronics requiring Grade 1 (–40°C to +125°C) reliability. |
| Rail-to-rail output swing | Delivers >99% of VS–GND range at 1 mA load - eliminates need for level-shifting in 3.3 V microcontroller ADC interfaces. |
| Low input offset drift | 4 µV/°C - reduces calibration frequency in temperature-varying industrial sensor nodes. |
| Unity-gain stable | Operates reliably with gain = 1 without external compensation - simplifies design of voltage followers and active filters. |
Applications
| ASIC Interface Buffer | Sensor Signal Conditioning |
|---|---|
Use Scenario: Interfacing between low-voltage ASIC I/O pins and external analog subsystems in portable diagnostics equipment. IC Role / Device Role / Timing Role: Dual-channel voltage follower providing impedance isolation and rail-to-rail signal translation. Use Value: Eliminates level-shifters by accepting 0–3.3 V ASIC outputs and driving 0–3.3 V ADC inputs with <1 mV gain error. | Use Scenario: Amplifying low-level output from a MEMS pressure sensor in wearable health monitors. IC Role / Device Role / Timing Role: Non-inverting amplifier with programmable gain (10–100×) for DC-coupled sensor output scaling. Use Value: 4 pA input bias ensures <0.5% error with 100 kΩ sensor bridge, while 45 µA quiescent current extends battery runtime beyond 7 days. |
| Piezoelectric Transducer Interface | Portable Medical Instrumentation |
Use Scenario: Charge amplification of high-impedance piezoelectric vibration sensors in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10 MΩ feedback resistor and AC-coupled input. Use Value: Rail-to-rail input enables direct connection to floating sensor elements; 1 MHz bandwidth captures resonance peaks up to 100 kHz. | Use Scenario: Front-end signal conditioning in handheld ECG devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: Dual op-amp implementing lead-I instrumentation amplifier and right-leg drive buffer. Use Value: AEC-Q100 qualification ensures long-term reliability; 45 µA per amplifier enables >24-hour continuous operation on CR2032. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual CMOS op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6022-E/SN | Higher 170 µA supply current; 10 µV max VOS; same SOIC-8 package. | Better DC precision but 3.8× higher power - unsuitable for multi-day battery operation. | Select when offset-critical DC amplification outweighs power budget constraints. |
| TSV912IDT | Wider 8 MHz GBP; 130 µA supply current; rail-to-rail I/O; SOIC-8. | Superior speed for AC-coupled audio paths but higher noise (24 nV/√Hz) and reduced thermal stability. | Choose for higher-frequency sensor interfaces where bandwidth >1 MHz is mandatory. |
Compared with MCP6022-E/SN and TSV912IDT, AD8542ARZ-REEL uniquely balances ultra-low power (45 µA), AEC-Q100 qualification, and 1 MHz bandwidth in SOIC-8 - making it optimal for thermally constrained, battery-operated automotive and portable medical systems requiring long-term stability.
Availability
AD8542ARZ-REEL is available at Aetrix Electronics and suitable for portable medical instrumentation, automotive cabin sensors, and industrial condition monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8542ARZ-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-grade systems - emphasizing precision, thermal robustness, and ease of use in single-supply topologies.
FAQ
What is the maximum operating junction temperature for AD8542ARZ-REEL?
The AD8542ARZ-REEL has a maximum junction temperature of +150°C, with specified operation from –40°C to +125°C ambient. Thermal resistance θJA is 120°C/W for the SOIC-8 package on a standard 4-layer board, allowing ~100 mW dissipation before reaching thermal limit at +125°C ambient.
Does AD8542ARZ-REEL support true rail-to-rail input at 2.7 V supply?
Yes, AD8542ARZ-REEL guarantees rail-to-rail input common-mode range (0 V to VS) at all supply voltages from 2.7 V to 5.5 V, including 2.7 V. This enables direct interfacing with 0–2.7 V sensor outputs or DACs without external biasing networks.
Can AD8542ARZ-REEL be used as a comparator?
Yes, AD8542ARZ-REEL can function as a comparator due to its rail-to-rail input/output, no phase reversal, and 5 µs propagation delay at 5 V. However, it lacks internal hysteresis - external resistors (e.g., R2 in Figure 39 of the datasheet) must be added for reliable switching in overload detection applications.
What is the typical input offset voltage drift of AD8542ARZ-REEL over temperature?
The AD8542ARZ-REEL exhibits a typical input offset voltage drift of 4 µV/°C across –40°C to +125°C, as confirmed in Table 1–3 of the Rev. H datasheet. This low drift minimizes calibration burden in temperature-varying environments like automotive engine compartments.
Is AD8542ARZ-REEL pin-compatible with other dual op-amps in SOIC-8 packages?
AD8542ARZ-REEL uses the industry-standard SOIC-8 pinout (Pin 1 = Output A, Pin 4 = V–, Pin 8 = V+), matching generic dual op-amp layouts. However, functional compatibility depends on specifications - e.g., supply current, bandwidth, and input bias - not just pin count or footprint.
AD8542ARZ-REEL 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:
- 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-SOIC
AD8542ARZ-REEL FAQ
1.How can I place an order for AD8542ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8542ARZ-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 AD8542ARZ-REEL reliable?
The price and inventory of AD8542ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8542ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8542ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8542ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8542ARZ-REEL?
AD8542ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8542ARZ-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 AD8542ARZ-REEL?
For technical support, including AD8542ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8542ARZ-REEL requirements.
6.How does Aetrix verify that AD8542ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8542ARZ-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 AD8542ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8542ARZ-REEL?
All AD8542ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8542ARZ-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 AD8542ARZ-REEL part is unused and in its original packaging.
Return procedure for AD8542ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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