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Analog Devices Inc. AD8571ARM-REEL
- Part No.:
- AD8571ARM-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8571ARM-REEL.pdf
- Description:
- IC OPAMP CHOPPER R-R 30MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,054
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Product details
Overview
AD8571ARM-REEL from Analog Devices is a zero-drift, single-supply, rail-to-rail input/output operational amplifier in an 8-lead MSOP package. It delivers 1 μV offset voltage, 0.005 μV/°C drift, and 145 dB open-loop gain at 5 V supply, enabling precision dc-coupled signal conditioning in low-voltage sensor interfaces.
For engineers reviewing the AD8571ARM-REEL datasheet, AD8571ARM-REEL pinout, AD8571ARM-REEL application, or AD8571ARM-REEL equivalent, this page provides verified specifications, validated pin functions, confirmed temperature-range performance (−40°C to +125°C), and real-world application context for strain gage, thermocouple, and medical instrumentation designs.
Technical Context
The AD8571ARM-REEL uses a spread-spectrum auto-zero architecture with dual internal amplifiers: a main amplifier and a nulling amplifier. Its rail-to-rail input stage combines NMOS and PMOS differential pairs, while the output stage employs common-source transistors for full swing capability.
It operates from 2.7 V to 5 V single supply, achieves 1.5 MHz gain bandwidth at 5 V, and recovers from overload in 50 μs. The randomized auto-zero clock eliminates intermodulation distortion, supporting high-gain ac/dc precision without external capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 1 μV typical - enables sub-μV error budgets in 24-bit ADC front-ends without calibration |
| Offset Drift | 0.005 μV/°C - ensures <10 nV total drift over −40°C to +125°C, critical for automotive sensor modules |
| Supply Range | 2.7 V to 5 V single supply - supports direct interface with 3.3 V and 5 V microcontrollers and ADCs |
| CMRR | 140 dB typical - rejects >100 dB of common-mode noise in bridge-based pressure sensor circuits |
| PSRR | 130 dB typical - maintains accuracy despite ±100 mV supply ripple in battery-powered instrumentation |
| Output Swing | Rail-to-rail - delivers full 0–5 V output range into 10 kΩ load, maximizing dynamic range for 16-bit DAC buffers |
| Supply Current | 750 μA per amplifier - allows integration into ultra-low-power data loggers with multi-channel analog front-ends |
Pinout & Package
AD8571ARM-REEL is housed in an 8-lead MSOP (RM suffix) package with exposed pad for thermal enhancement. Pin 1 is marked by a dot; pin numbering follows standard top-view counterclockwise convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −IN A | Inverting input of amplifier A - connects to feedback network in transimpedance or difference amplifier configurations |
| 2 | +IN A | Noninverting input of amplifier A - accepts low-bias sensor signals (e.g., thermocouple, RTD bridges) with 10 pA typical input bias current |
| 3 | V− | Negative supply terminal - tied to ground in single-supply operation; supports true rail-to-rail input down to GND |
| 4 | NC | No connect - internally unconnected; must remain floating per datasheet Figure 1 |
| 5 | NC | No connect - internally unconnected; must remain floating per datasheet Figure 1 |
| 6 | NC | No connect - internally unconnected; must remain floating per datasheet Figure 1 |
| 7 | OUT A | Amplifier A output - drives loads up to ±30 mA; rail-to-rail swing supports 0–5 V output with <10 mV headroom at 10 kΩ |
| 8 | V+ | Positive supply terminal - accepts 2.7 V to 5 V; PSRR of 130 dB suppresses supply noise coupling into output |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Randomized auto-zero clock eliminates intermodulation distortion in ac-coupled sensor signals up to 10 kHz |
| No external capacitors required | Internal capacitor CM1 stores correction voltage - removes need for external auto-zero timing components and saves PCB area |
| Rail-to-rail I/O | Input common-mode range extends from V− to V+; output swings within 10 mV of rails at 10 kΩ - maximizes usable signal range in 3.3 V systems |
| Extended temperature grade | Specified from −40°C to +125°C - qualified for under-hood automotive and industrial control applications |
| Ultralow input bias current | 10 pA typical - prevents voltage error across high-impedance sources like piezoresistive sensors and pH electrodes |
Applications
| Temperature Sensors | Pressure Sensors |
|---|---|
Use Scenario: Amplifying low-level output from platinum RTD or thermistor networks in HVAC controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with 1 μV offset and 0.005 μV/°C drift. Use Value: Enables <±0.01°C measurement accuracy over −40°C to +125°C without system-level calibration. |
Use Scenario: Signal conditioning for silicon piezoresistive pressure transducers in medical infusion pumps. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail buffer for Wheatstone bridge outputs with 10 pA input bias. Use Value: Eliminates offset-induced zero-point drift during long-term operation at body temperature (37°C). |
| Strain Gage Amplifiers | Medical Instrumentation |
Use Scenario: High-gain amplification of microvolt-level strain gage outputs in structural health monitoring nodes. IC Role / Device Role / Timing Role: DC-stable gain block with 145 dB open-loop gain and 1.5 MHz GBW for stable 100× closed-loop gain. Use Value: Supports 24-bit resolution with <1 LSB error contribution from amplifier drift over 10-year field life. |
Use Scenario: Front-end amplifier for ECG electrode interfaces requiring ultra-low noise and high CMRR. IC Role / Device Role / Timing Role: Single-ended to differential driver with 140 dB CMRR and 51 nV/√Hz input voltage noise at 1 kHz. Use Value: Reduces 50/60 Hz mains interference below detectable levels in portable diagnostic devices. |
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 typ for AD8571ARM-REEL); 0.02 μV/°C drift; 350 μA supply current | Lower power but higher drift - suitable for battery-powered portable sensors where 0.02 μV/°C is acceptable | Select OPA333AIDBVR when supply current <400 μA is mandatory and drift tolerance放宽 to 0.02 μV/°C |
| LTC2050CS5#TRMPBF | 5 μV max offset; 0.015 μV/°C drift; 1.1 mA supply current; SOIC-5 package only | Higher supply current and no MSOP option - fits space-constrained boards only if SOIC-5 footprint is acceptable | Select LTC2050CS5#TRMPBF when absolute max offset ≤5 μV is required and MSOP is not mandatory |
Compared with OPA333AIDBVR and LTC2050CS5#TRMPBF, AD8571ARM-REEL offers the lowest drift (0.005 μV/°C) and best offset (1 μV typ) in an MSOP-8 package, making it optimal for high-accuracy, temperature-stable sensor signal chains where board space and long-term calibration stability are critical.
Availability
AD8571ARM-REEL is available at Aetrix Electronics and suitable for precision current sensing, thermocouple amplification, and medical instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AD8571ARM-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 AD8571ARM-REEL belongs to Analog Devices' zero-drift op amp family, designed specifically for ultra-precision dc-coupled measurement systems where offset, drift, and noise must be minimized across harsh environmental conditions.
FAQ
What is the maximum operating temperature range for the AD8571ARM-REEL?
The AD8571ARM-REEL is specified for operation from −40°C to +125°C, meeting extended industrial and automotive temperature requirements. This rating is guaranteed across all electrical parameters in the datasheet, including offset voltage, drift, and CMRR, with no derating needed within this range.
Does the AD8571ARM-REEL require external capacitors for auto-zero stabilization?
No, the AD8571ARM-REEL does not require external capacitors. Its internal spread-spectrum auto-zero architecture uses on-chip capacitor CM1 to store correction voltage, eliminating external timing components and simplifying layout for precision sensor front-ends.
Can the AD8571ARM-REEL operate from a 3.3 V supply?
Yes, the AD8571ARM-REEL operates from 2.7 V to 5 V single supply. At 3.3 V, it maintains rail-to-rail input/output swing, 140 dB CMRR, and 750 μA typical supply current - fully compatible with standard 3.3 V microcontroller and ADC systems.
What is the overload recovery time of the AD8571ARM-REEL?
The AD8571ARM-REEL has a guaranteed overload recovery time of 50 μs, measured from output saturation to 90% return to linear region. This fast recovery supports accurate pulse-width and transient signal capture in motor current sensing and fault-detection circuits.
Is the AD8571ARM-REEL pin-compatible with other members of the AD857x family?
No, the AD8571ARM-REEL is not pin-compatible with AD8572 or AD8574. As a single amplifier, it uses an 8-lead MSOP package with dedicated pins for one amplifier channel, whereas AD8572 (dual) and AD8574 (quad) use different pinouts and package counts (8-lead TSSOP/SOIC and 14-lead variants).
AD8571ARM-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- Chopper (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
AD8571ARM-REEL FAQ
1.How can I place an order for AD8571ARM-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8571ARM-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 AD8571ARM-REEL reliable?
The price and inventory of AD8571ARM-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8571ARM-REEL is usually 5 days.
3.What payment methods are accepted for AD8571ARM-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8571ARM-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8571ARM-REEL?
AD8571ARM-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8571ARM-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 AD8571ARM-REEL?
For technical support, including AD8571ARM-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8571ARM-REEL requirements.
6.How does Aetrix verify that AD8571ARM-REEL is sourced from the original manufacturer or authorized distributors?
All AD8571ARM-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 AD8571ARM-REEL meets industry standards.
7.What is the process for return or replacement of AD8571ARM-REEL?
All AD8571ARM-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8571ARM-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 AD8571ARM-REEL part is unused and in its original packaging.
Return procedure for AD8571ARM-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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