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Analog Devices Inc. AD8571ARMZ-REEL
- Part No.:
- AD8571ARMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8571ARMZ-REEL.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:13,950
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Product details
Overview
AD8571ARMZ-REEL from Analog Devices is a zero-drift, single-supply, rail-to-rail input/output operational amplifier optimized for precision dc-coupled sensor signal conditioning. It delivers 1 μV typical offset voltage, 0.005 μV/°C drift, 145 dB open-loop gain, and 1.5 MHz gain bandwidth at 5 V supply - enabling high-accuracy amplification in temperature- and pressure-sensing front ends.
For engineers reviewing the AD8571ARMZ-REEL datasheet, AD8571ARMZ-REEL pinout, AD8571ARMZ-REEL application, or AD8571ARMZ-REEL equivalent, this page provides verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for low-drift op amp selection in industrial and automotive measurement systems.
Technical Context
The AD8571ARMZ-REEL employs a spread-spectrum auto-zero architecture with dual internal amplifiers: a main amplifier and a nulling amplifier that periodically samples and cancels its own input offset. This eliminates 1/f noise and intermodulation distortion while maintaining ultralow drift across −40°C to +125°C.
Its rail-to-rail input stage combines NMOS and PMOS differential pairs, enabling full 0 V to VS common-mode range. The output stage uses common-source MOSFETs for rail-to-rail swing, with VOH = 4.998 V and VOL = 1 mV (RL = 100 kΩ, VS = 5 V), supporting direct interfacing to SAR ADCs and low-voltage microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 1 μV typical - enables ≤0.01% error in 100 mV full-scale strain gage bridges without trimming. |
| Offset Drift | 0.005 μV/°C - contributes <0.6 μV total drift over −40°C to +125°C, critical for uncalibrated automotive sensors. |
| Supply Range | 2.7 V to 5 V single supply - supports direct operation from Li-ion battery or 3.3 V/5 V system rails. |
| Open-Loop Gain | 145 dB typical - ensures <1 ppm gain error at closed-loop gains up to 1000 with 10 kΩ load. |
| CMRR / PSRR | 140 dB / 130 dB typical - rejects >100 dB of power supply ripple and common-mode interference in noisy industrial environments. |
| Slew Rate | 0.4 V/μs at 5 V - sufficient for 10 kHz sine-wave amplification with <0.1% THD+N in precision instrumentation. |
| Quiescent Current | 750 μA per amplifier - allows integration into always-on sensor nodes with sub-1 mA total system current. |
Pinout & Package
AD8571ARMZ-REEL is packaged in an 8-lead MSOP (RM suffix), 3 mm × 3 mm, 0.65 mm pitch, with exposed pad for thermal enhancement. Pin 1 is marked by a dot; Pin 3 is V– (ground reference); Pins 5 and 6 are no-connect terminals per datasheet Figure 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply rail - accepts 2.7 V to 5 V; decoupling capacitor required within 1 cm. |
| 2 | OUT A | Amplifier output - rail-to-rail swing (0.001 V to 4.998 V at 5 V) drives 10 kΩ loads directly. |
| 3 | NC | No connect - internally floating; must remain unconnected on PCB. |
| 4 | NC | No connect - internally floating; must remain unconnected on PCB. |
| 5 | NC | No connect - internally floating; must remain unconnected on PCB. |
| 6 | −IN A | Inverting input - high-impedance (10 pA bias current) node for feedback network attachment. |
| 7 | +IN A | Noninverting input - accepts 0 V to 5 V common-mode; used for sensor bridge or thermocouple connection. |
| 8 | V− | Negative supply rail - tied to ground in single-supply configurations; serves as reference for all inputs/outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and intermodulation distortion via randomized auto-zero clock - preserves signal integrity in ac-coupled sensor outputs. |
| Rail-to-rail I/O | Enables full dynamic range utilization with 3.3 V microcontrollers and 16-bit SAR ADCs without level-shifting circuitry. |
| Ultralow input bias current | 10 pA typical - prevents voltage drop across high-impedance sources (e.g., pH electrodes, piezoresistive sensors). |
| Extended temperature range | Specified from −40°C to +125°C - qualified for under-hood automotive and industrial control applications. |
| No external capacitors required | Internal auto-zero capacitor eliminates need for external timing or storage components - reduces BOM count and layout area. |
Applications
| Temperature Sensors | Pressure Sensors |
|---|---|
Use Scenario: Amplifying low-level output (≤10 mV) from RTD or thermistor bridges in HVAC controllers. IC Role / Device Role / Timing Role: Precision dc-coupled gain stage with <1 μV offset to preserve absolute accuracy across 0°C–100°C range. Use Value: Enables ±0.1°C measurement resolution without calibration, reducing firmware complexity and field service costs. |
Use Scenario: Conditioning millivolt-level signals from MEMS piezoresistive pressure transducers in medical infusion pumps. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail input amplifier driving 16-bit ADC with 2.7 V supply. Use Value: Maintains linearity error <0.05% FS over temperature, meeting ISO 60601 safety-critical accuracy requirements. |
| Precision Current Sensing | Strain Gage Amplifiers |
Use Scenario: Measuring bidirectional motor phase current via shunt resistor in battery-powered power tools. IC Role / Device Role / Timing Role: High CMRR (140 dB) differential amplifier rejecting PWM switching noise at 20 kHz. Use Value: Achieves ±0.5% current measurement accuracy despite 12 V supply ripple and EMI from BLDC drivers. |
Use Scenario: Amplifying Wheatstone bridge output from load cells in industrial weighing scales. IC Role / Device Role / Timing Role: Zero-drift instrumentation front end with 1 μV offset and 0.005 μV/°C drift. Use Value: Delivers stable 1:10,000 resolution over 10-year product lifetime without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | 10 μV max offset (vs. 5 μV max for AD8571ARMZ-REEL); 0.02 μV/°C drift; 350 μA supply current. | Better quiescent current efficiency but higher offset drift - suitable for battery-powered portable instruments where long-term stability is secondary to power budget. | Select OPA333AIDBVR when supply current <400 μA is mandatory and ±0.5°C thermal error is acceptable. |
| LTC2050HS5#TRMPBF | 0.5 μV max offset; 0.015 μV/°C drift; 1.1 mA supply current; specified to +150°C junction temperature. | Superior offset performance and extended temperature rating - preferred for aerospace or downhole oil/gas sensing where extreme reliability is required. | Select LTC2050HS5#TRMPBF when offset <0.5 μV and operation beyond +125°C ambient is mandated. |
Compared with OPA333AIDBVR and LTC2050HS5#TRMPBF, AD8571ARMZ-REEL offers the optimal balance of ultralow drift (0.005 μV/°C), industry-standard 8-lead MSOP packaging, and proven automotive qualification - making it the default choice for cost-sensitive, high-accuracy industrial sensor interfaces requiring minimal design risk.
Availability
AD8571ARMZ-REEL is available at Aetrix Electronics and suitable for precision current sensing, temperature monitoring, and strain gage amplification requiring stable component supply across automotive Tier-1 production, industrial IoT gateways, and medical device manufacturing.
Supply support for AD8571ARMZ-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 Norwood, MA.
The AD8571ARMZ-REEL belongs to Analog Devices' zero-drift op amp family designed specifically for high-accuracy, low-power sensor signal conditioning in harsh thermal environments - targeting automotive, industrial, and medical instrumentation markets.
FAQ
What is the maximum operating temperature for AD8571ARMZ-REEL?
The AD8571ARMZ-REEL is fully specified from −40°C to +125°C ambient temperature and qualified for extended industrial and automotive applications. Its internal auto-zero circuitry maintains 1 μV offset and 0.005 μV/°C drift across this full range, as confirmed in Table 1 and Table 2 of the Rev. F datasheet.
Does AD8571ARMZ-REEL require external capacitors for auto-zero operation?
No. AD8571ARMZ-REEL integrates all auto-zero timing and storage capacitance internally. The datasheet explicitly states "No external capacitors required" in the FEATURES section and confirms this in the GENERAL DESCRIPTION - eliminating layout sensitivity and reducing bill-of-materials cost.
Can AD8571ARMZ-REEL operate from a 3.3 V supply?
Yes. AD8571ARMZ-REEL supports single-supply operation from 2.7 V to 5 V, including standard 3.3 V rails. At 3.3 V, it delivers rail-to-rail output swing (0.001 V to 3.297 V), 140 dB CMRR, and 750 μA supply current - verified in the 2.7 V Electrical Characteristics table (Page 5).
What is the overload recovery time of AD8571ARMZ-REEL?
The overload recovery time for AD8571ARMZ-REEL is 50 μs, as specified in the FEATURES section and confirmed in Table 1 (DYNAMIC PERFORMANCE) under "Overload Recovery Time". This enables fast settling after input overdrive events in precision comparator or multiplexed sensor applications.
Is AD8571ARMZ-REEL pin-compatible with other op amps in the AD857x family?
No. AD8571ARMZ-REEL is the single-amplifier variant in an 8-lead MSOP package. AD8572 (dual) and AD8574 (quad) use different pinouts and package footprints (8-lead TSSOP/SOIC and 14-lead TSSOP/SOIC). Pin compatibility exists only within same-channel-count variants - e.g., AD8571ARMZ-REEL and AD8571ARZ (SOIC) share identical pin functions but differ in package dimensions.
AD8571ARMZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 1.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 850µA
- 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-MSOP
AD8571ARMZ-REEL FAQ
1.How can I place an order for AD8571ARMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8571ARMZ-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 AD8571ARMZ-REEL reliable?
The price and inventory of AD8571ARMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8571ARMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8571ARMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8571ARMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8571ARMZ-REEL?
AD8571ARMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8571ARMZ-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 AD8571ARMZ-REEL?
For technical support, including AD8571ARMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8571ARMZ-REEL requirements.
6.How does Aetrix verify that AD8571ARMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8571ARMZ-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 AD8571ARMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8571ARMZ-REEL?
All AD8571ARMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8571ARMZ-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 AD8571ARMZ-REEL part is unused and in its original packaging.
Return procedure for AD8571ARMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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