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Analog Devices Inc. AD8539ARMZ
- Part No.:
- AD8539ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8539ARMZ.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:393
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Product details
Overview
AD8539ARMZ from Analog Devices is a dual, precision auto-zero operational amplifier in an 8-lead MSOP package, designed for ultra-low offset voltage (15 µV max), near-zero drift (0.03 µV/°C), and low power consumption (210 µA typical at 5 V). It operates from 2.7 V to 5.5 V single supply and is qualified for automotive applications across −40°C to +125°C.
For engineers reviewing the AD8539ARMZ datasheet, AD8539ARMZ pinout, AD8539ARMZ application, or AD8539ARMZ equivalent, this page delivers verified specifications, real-world use cases in sensor interfaces and portable instrumentation, and validated alternative options - all grounded in the official Rev. B datasheet and Analog Devices' ordering guide.
Technical Context
The AD8539ARMZ implements auto-zeroing architecture to continuously correct input offset voltage and drift, enabling stable DC precision without external trimming. Its dual-channel configuration supports independent signal conditioning paths with high CMRR (115 dB min) and PSRR (105 dB min), critical for noisy environments.
It features rail-to-rail output swing (within 5 mV of rails at light load), low input bias current (15 pA typ), and 430 kHz gain bandwidth - optimized for low-frequency, high-accuracy applications such as temperature measurement and electronic scales where long-term stability outweighs speed requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 15 µV maximum at 25°C - ensures <1 LSB error in 16-bit systems with 5 V full-scale range. |
| Offset Drift | 0.03 µV/°C - contributes <0.3 µV total drift over −40°C to +125°C, enabling uncalibrated operation in automotive cabins. |
| Supply Current | 210 µA per amplifier at 5 V - enables >1-year battery life in coin-cell-powered portable instrumentation. |
| Input Bias Current | 15 pA typical - minimizes voltage error across high-impedance sensor sources (e.g., thermistors, pH electrodes). |
| CMRR | 115 dB minimum - rejects common-mode noise from shared power rails or EMI-coupled traces in mixed-signal PCBs. |
| Gain Bandwidth | 430 kHz - sufficient for DC–100 Hz sensor signals with ≥60 dB closed-loop gain stability. |
| Operating Temp | −40°C to +125°C - certified for under-hood automotive and industrial control environments. |
Pinout & Package
AD8539ARMZ uses an 8-lead MSOP (RM-8) package: 3.0 mm × 3.0 mm footprint, 0.65 mm lead pitch, 1.10 mm max height. Pin 1 is marked with a dot; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback network or next-stage input with rail-to-rail capability. |
| 2 | −IN A | Inverting input of Amp A - connects to feedback resistor or summing node in precision configurations. |
| 3 | +IN A | Non-inverting input of Amp A - accepts low-noise sensor signals with minimal loading (15 pA bias). |
| 4 | V− | Negative supply rail - tied to ground in single-supply operation; must be decoupled with 0.1 µF ceramic. |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from Amp A; supports dual independent channels. |
| 6 | −IN B | Inverting input of Amp B - used for second sensor channel or reference buffer without crosstalk. |
| 7 | OUT B | Amplifier B output - identical performance to OUT A; enables compact dual-channel front-end design. |
| 8 | V+ | Positive supply rail - accepts 2.7 V to 5.5 V; PSRR >105 dB suppresses supply ripple on output. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-zero architecture | Eliminates 1/f noise and drift - maintains sub-µV DC accuracy over time and temperature without calibration. |
| Rail-to-rail output | Swings within 5 mV of V+ and V− at 25 µA load - maximizes dynamic range in low-voltage (2.7 V) battery systems. |
| Low input bias current | 15 pA typical - avoids significant voltage drop across >100 MΩ source impedances (e.g., piezoresistive sensors). |
| High PSRR/CMRR | 105 dB PSRR and 115 dB CMRR - preserves signal integrity in electrically noisy automotive or industrial settings. |
| Automotive qualification | AEC-Q100 stress-tested - meets reliability requirements for engine control, cabin sensors, and ADAS subsystems. |
Applications
| Temperature Measurement | Sensor Interface |
|---|---|
Use Scenario: Precision RTD or thermistor signal conditioning in HVAC controllers and automotive cabin temperature modules. IC Role / Device Role / Timing Role: Dual-channel amplifier buffers and amplifies low-level resistance-derived voltages while rejecting common-mode noise from shared 5 V rails. Use Value: 0.03 µV/°C drift ensures <±0.1°C uncalibrated accuracy over full automotive temperature range. |
Use Scenario: Front-end amplification for MEMS pressure sensors in tire pressure monitoring systems (TPMS). IC Role / Device Role / Timing Role: Configured as instrumentation amplifier (with external resistors) to extract microvolt-level bridge outputs. Use Value: 15 µV max offset prevents zero-point error that would otherwise require factory calibration per unit. |
| Electronic Scales | Battery-Powered Instrumentation |
Use Scenario: Load cell signal conditioning in portable weighing devices requiring 24-bit ADC resolution. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage preceding sigma-delta ADC; dual channel supports ratiometric reference buffering. Use Value: 1.2 µVp-p (0.1–10 Hz) noise enables <1 µV RMS resolution - critical for sub-milligram detection thresholds. |
Use Scenario: Signal chain in handheld multimeters and portable data loggers powered by AA batteries. IC Role / Device Role / Timing Role: Dual op-amp provides simultaneous signal amplification and reference voltage buffering with ultra-low quiescent current. Use Value: 210 µA per amplifier extends battery life beyond 500 hours at continuous operation - verified at 3 V supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8539ARZ | Same die, 8-lead SOIC_N (R-8) package - 5.0 mm × 4.0 mm footprint, higher θJA (125°C/W vs. 145°C/W). | Preferred for prototyping or through-hole assembly; less space-constrained than MSOP. | Select AD8539ARZ when board layout allows larger package and thermal dissipation is not limiting. |
| LTC2057HMS8#PBF | Lower offset (5 µV max), higher supply current (450 µA), wider supply range (2.7–12 V), same MSOP-8 package. | Better for ultra-high-precision DC applications where power budget permits; not automotive-qualified. | Choose LTC2057HMS8#PBF only if sub-10 µV offset is mandatory and AEC-Q100 compliance is unnecessary. |
Compared with AD8539ARMZ, AD8539ARZ offers identical electrical performance in a larger, easier-to-hand-solder package, while LTC2057HMS8#PBF trades automotive qualification and lower power for superior offset spec - making AD8539ARMZ optimal for space-constrained, safety-critical automotive sensor nodes.
Availability
AD8539ARMZ is available at Aetrix Electronics and suitable for automotive sensor modules, portable medical devices, and industrial process monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AD8539ARMZ 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 Norwood, MA.
The AD8538/AD8539 product line targets ultra-precision, low-power signal conditioning in harsh environments - specifically engineered for automotive, industrial, and portable instrumentation where DC accuracy and long-term stability are non-negotiable.
FAQ
What is the maximum operating supply voltage for AD8539ARMZ?
The AD8539ARMZ has an absolute maximum supply voltage rating of +6 V, but its specified operational range is 2.7 V to 5.5 V. Operating above 5.5 V risks violating the guaranteed performance envelope and may cause irreversible damage. The device achieves optimal offset and drift specs within the 2.7–5.5 V window, as confirmed in Tables 3 and 4 of the Rev. B datasheet.
Does AD8539ARMZ support true rail-to-rail input?
No, AD8539ARMZ does not support rail-to-rail input. Its input common-mode voltage range is specified as 0.2 V to 4.8 V at 5 V supply (−40°C to +125°C), meaning it cannot reliably accept signals within 200 mV of either rail. However, it does provide rail-to-rail output swing - delivering VOH ≥4.99 V and VOL ≤7 mV at light loads - as verified in Table 3's output characteristics section.
Is AD8539ARMZ pin-compatible with other AD8539 variants?
Yes, AD8539ARMZ is pin-compatible with AD8539ARZ (SOIC_N) and AD8539ARMZ-REEL (same MSOP-8 package, tape-and-reel variant). All share identical pin numbering and function per Figure 4 in the datasheet. This allows direct substitution between reel and tube packaging, or migration from SOIC to MSOP for space-constrained designs - provided thermal and layout constraints are re-evaluated.
What is the channel separation specification for AD8539ARMZ?
AD8539ARMZ exhibits ≥120 dB channel separation at 1 kHz (Figure 55), degrading to >80 dB at 100 kHz. This isolation prevents crosstalk between the two amplifiers when used in dual-path applications like differential sensor pairs or simultaneous signal/reference buffering - a key advantage over generic dual op-amps lacking matched internal layout.
Can AD8539ARMZ drive capacitive loads directly?
AD8539ARMZ is stable with up to 100 pF capacitive load in unity-gain configuration (Figures 47, 60), but oscillation risk increases beyond that. For loads >100 pF (e.g., long cables or ADC input caps), a series resistor (10–100 Ω) between output and load restores phase margin. This behavior is documented in the "Small Signal Overshoot vs. Load Capacitance" plots and aligns with its 65° phase margin specification.
AD8539ARMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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-MSOP
AD8539ARMZ FAQ
1.How can I place an order for AD8539ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8539ARMZ 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 AD8539ARMZ reliable?
The price and inventory of AD8539ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8539ARMZ is usually 5 days.
3.What payment methods are accepted for AD8539ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8539ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8539ARMZ?
AD8539ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8539ARMZ 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 AD8539ARMZ?
For technical support, including AD8539ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8539ARMZ requirements.
6.How does Aetrix verify that AD8539ARMZ is sourced from the original manufacturer or authorized distributors?
All AD8539ARMZ 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 AD8539ARMZ meets industry standards.
7.What is the process for return or replacement of AD8539ARMZ?
All AD8539ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8539ARMZ, 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 AD8539ARMZ part is unused and in its original packaging.
Return procedure for AD8539ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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