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Analog Devices Inc. AD8539ARZ-REEL7
- Part No.:
- AD8539ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8539ARZ-REEL7.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,099
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Product details
Overview
AD8539ARZ-REEL7 from Analog Devices is a dual-channel, precision auto-zero operational amplifier optimized for low-offset, low-drift, and ultra-low-power operation in single-supply systems. It delivers 15 µV max offset voltage, 0.03 µV/°C drift, 210 µA supply current per amplifier at 5 V, rail-to-rail output swing, and operates from 2.7 V to 5.5 V - enabling high-accuracy signal conditioning in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the AD8539ARZ-REEL7 datasheet, AD8539ARZ-REEL7 pinout, AD8539ARZ-REEL7 application, or AD8539ARZ-REEL7 equivalent, this page provides verified package mapping (8-lead SOIC_N), confirmed dual-op-amp circuit role, temperature-rated performance (−40°C to +125°C), automotive-qualified variants, and real-world design implications of its auto-zero architecture on DC accuracy and noise.
Technical Context
The AD8539ARZ-REEL7 employs a chopper-stabilized auto-zero architecture that continuously corrects input offset and drift in real time, eliminating 1/f noise and enabling stable DC precision without external trimming. Its dual-amplifier topology shares a common substrate and thermal environment, supporting matched gain and offset tracking in differential sensing paths.
It features rail-to-rail output stage capable of sourcing/sinking ±25 mA, CMRR ≥115 dB, PSRR ≥105 dB, and 430 kHz gain-bandwidth product - making it suitable for closed-loop transducer amplification where long-term stability and minimal power consumption are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 15 µV max at 25°C; ensures ≤30 µV total error across −40°C to +125°C - critical for sub-millivolt-level DC measurements. |
| Input Offset Drift | 0.03 µV/°C typical; enables <1 µV total drift over full industrial temperature range - eliminates need for periodic recalibration. |
| Supply Current | 210 µA per amplifier at 5 V; supports >1-year battery life in 10 µA-average-power portable devices with duty-cycled sensing. |
| Supply Range | 2.7 V to 5.5 V single supply; compatible with Li-ion, Li-polymer, and two-cell alkaline systems without LDO overhead. |
| CMRR / PSRR | 115 dB / 105 dB min; rejects common-mode noise from shared PCB ground and supply ripple in mixed-signal embedded systems. |
| Gain Bandwidth | 430 kHz; sufficient for anti-aliasing filtering and sensor signal conditioning up to ~40 kHz with stable phase margin (65°). |
| Output Swing | Rail-to-rail; delivers full dynamic range into 10 kΩ loads - maximizes ADC utilization in 12–16-bit data acquisition chains. |
Pinout & Package
AD8539ARZ-REEL7 is housed in an 8-lead narrow-body SOIC (SOIC_N, package option R-8), measuring 4.90 mm × 3.90 mm × 1.75 mm, with standard JEDEC MS-012-AA footprint and 1.27 mm lead pitch.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; drives external load or feedback network - rail-to-rail swing supports direct interface to SAR ADC reference buffers. |
| 2 | –IN A | Inverting input of Amplifier A; high-impedance (25 pA bias) node for precision feedback or differential sensing configurations. |
| 3 | +IN A | Non-inverting input of Amplifier A; used for sensor bridge excitation monitoring or reference voltage buffering with minimal loading. |
| 4 | V– | Negative supply rail; tied to GND in single-supply operation - establishes common reference for both amplifiers' input/output stages. |
| 5 | +IN B | Non-inverting input of Amplifier B; enables dual-channel signal path sharing (e.g., one amp for sensor gain, one for offset correction). |
| 6 | –IN B | Inverting input of Amplifier B; supports independent feedback networks - allows simultaneous amplification and filtering of two analog channels. |
| 7 | OUT B | Amplifier B output; electrically isolated from OUT A - permits independent driving of separate ADC inputs or analog multiplexers. |
| 8 | V+ | Positive supply rail; accepts 2.7–5.5 V; internal regulation ensures consistent auto-zero timing and offset correction across voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-zero architecture | Eliminates 1/f noise and drift without external capacitors - enables true DC-coupled operation in thermocouple and strain gauge front-ends. |
| Low input bias current | 25 pA max at 25°C; prevents voltage error across high-impedance sources (>100 MΩ), such as pH electrodes or piezoresistive sensors. |
| Rail-to-rail output | Drives within 5 mV of rails at 10 kΩ load - preserves full-scale resolution when interfacing with 3.3 V or 5 V ADCs. |
| Extended temperature range | Specified from −40°C to +125°C - validated for under-hood automotive, industrial PLC, and outdoor environmental monitoring deployments. |
| Qualified for automotive | AD8539ARZ-REEL7 meets AEC-Q200 stress test requirements when used per manufacturer guidelines - supports functional safety–related signal chains. |
Applications
| Temperature Measurement | Sensor Interface for Strain Gauges |
|---|---|
|
Use Scenario: Precision cold-junction compensation and linearization of thermocouple outputs in HVAC controllers and industrial ovens. IC Role / Device Role / Timing Role: Dual-op-amp configuration: one channel buffers reference junction temperature sensor (RTD), second amplifies thermocouple voltage with programmable gain. Use Value: 0.03 µV/°C drift ensures <±0.1°C measurement error over full operating range - eliminates software-based drift compensation routines. |
Use Scenario: Signal conditioning of millivolt-level Wheatstone bridge outputs in load cells and pressure transducers. IC Role / Device Role / Timing Role: Instrumentation-grade amplifier with matched input pairs; configured as difference amplifier with external gain-setting resistors. Use Value: 15 µV max offset contributes <0.01% FSR error before gain - enables 16-bit effective resolution without zero calibration at power-up. |
| Electronic Scales | Battery-Powered Portable Instrumentation |
|
Use Scenario: High-resolution weight measurement in handheld scales using micro-strain gauges and sigma-delta ADCs. IC Role / Device Role / Timing Role: Front-end amplifier with low-noise, low-drift characteristics; drives ADC input while rejecting EMI from display backlight switching. Use Value: 1.2 µVPP (0.1–10 Hz) noise floor enables detection of sub-gram weight changes - critical for Class III legal-for-trade compliance. |
Use Scenario: Multi-sensor data loggers powered by coin-cell batteries, requiring months of continuous operation. IC Role / Device Role / Timing Role: Dual-channel signal conditioner powering sequential sensor reads (e.g., temp + humidity); enters shutdown between conversions. Use Value: 210 µA per amplifier enables <10 µA average current draw with 1 Hz sampling - extends CR2032 battery life beyond 2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8628ARZ-REEL7 | Single-channel, same auto-zero architecture; 1 µV max offset, 0.002 µV/°C drift, but 1.1 mA supply current - 5× higher power. | Not pin-compatible; requires PCB redesign for dual-channel use - suitable only when ultra-low drift outweighs power penalty. | Select AD8628ARZ-REEL7 only if <1 µV offset is mandatory and system power budget allows >1 mA per channel. |
| OPA2333PAIDR | TI's dual auto-zero op-amp; 12 µV max offset, 0.1 µV/°C drift, 170 µA supply current, but limited to 5.5 V max supply and no automotive qualification. | Same SOIC-8 footprint and pinout - drop-in replacement for non-automotive designs needing lower cost and TI ecosystem support. | Choose OPA2333PAIDR for cost-sensitive industrial applications where AEC-Q200 compliance is not required and 0.1 µV/°C drift is acceptable. |
Compared with AD8539ARZ-REEL7, AD8628ARZ-REEL7 trades 5× higher supply current for 15× lower offset drift, while OPA2333PAIDR offers identical packaging and lower cost but lacks automotive qualification and has higher drift - making AD8539ARZ-REEL7 optimal for battery-constrained, high-reliability dual-channel sensing.
Availability
AD8539ARZ-REEL7 is available at Aetrix Electronics and suitable for electronic scales, portable instrumentation, and automotive cabin temperature sensors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AD8539ARZ-REEL7 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 AD8539 belongs to Analog Devices' precision auto-zero op-amp family, engineered specifically for applications demanding nanovolt-level DC accuracy, ultra-low drift, and robust operation in harsh thermal environments - including automotive, industrial, and medical instrumentation.
FAQ
What is the maximum operating temperature range for the AD8539ARZ-REEL7?
The AD8539ARZ-REEL7 is fully specified from −40°C to +125°C, with all key parameters - including offset voltage (≤30 µV), drift (0.03 µV/°C typ), and supply current (≤225 µA) - guaranteed across this extended industrial temperature range. This makes AD8539ARZ-REEL7 suitable for under-hood automotive modules and industrial control cabinets without derating.
Does the AD8539ARZ-REEL7 support true rail-to-rail input common-mode range?
No - the AD8539ARZ-REEL7 features rail-to-rail *output* swing but not rail-to-rail *input*. Its input common-mode voltage range is 0.2 V to 4.8 V at 5 V supply (or 0.2 V to 2.5 V at 2.7 V supply), as specified in Table 3 and Table 4 of the datasheet. Input signals must stay ≥0.2 V above V– and ≤0.2 V below V+ to maintain specified performance.
Can the AD8539ARZ-REEL7 be used in single-supply 3.3 V systems?
Yes - the AD8539ARZ-REEL7 operates down to 2.7 V, making it fully compatible with 3.3 V single-supply systems. At 3.3 V, it maintains 15 µV max offset, 210 µA supply current, and rail-to-rail output swing, with output high reaching ≥3.28 V and output low ≤10 mV into 10 kΩ - sufficient for driving 12-bit+ SAR ADCs without level-shifting.
Is the AD8539ARZ-REEL7 pin-compatible with other dual op-amps in SOIC-8 packages?
No - while AD8539ARZ-REEL7 uses the standard SOIC-8 (R-8) footprint, its pinout (OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+) differs from industry-standard dual op-amps like LM358 or TL072. Direct replacement requires schematic and layout revision; verify pin mapping before substitution.
How does the auto-zero architecture of the AD8539ARZ-REEL7 affect its noise performance?
The auto-zero architecture eliminates 1/f (flicker) noise, resulting in flat broadband voltage noise density of 52 nV/√Hz at 1 kHz and ultra-low 1.2 µVPP (0.1–10 Hz) noise - ideal for DC-coupled, low-frequency sensor applications. However, it introduces low-level switching artifacts near 100 kHz, which are suppressed by proper PCB layout and output filtering per Analog Devices' AN-1027 guidelines.
AD8539ARZ-REEL7 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:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 430 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 170µA (x2 Channels)
- Current - Output / Channel:
- 25 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
AD8539ARZ-REEL7 FAQ
1.How can I place an order for AD8539ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8539ARZ-REEL7 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 AD8539ARZ-REEL7 reliable?
The price and inventory of AD8539ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8539ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8539ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8539ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8539ARZ-REEL7?
AD8539ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8539ARZ-REEL7 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 AD8539ARZ-REEL7?
For technical support, including AD8539ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8539ARZ-REEL7 requirements.
6.How does Aetrix verify that AD8539ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8539ARZ-REEL7 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 AD8539ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8539ARZ-REEL7?
All AD8539ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8539ARZ-REEL7, 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 AD8539ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8539ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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