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Analog Devices Inc. AD8572ARUZ-REEL
- Part No.:
- AD8572ARUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8572ARUZ-REEL.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2CIRC 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,657
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Product details
Overview
AD8572ARUZ-REEL from Analog Devices is a dual zero-drift, rail-to-rail input/output operational amplifier optimized for precision dc-coupled signal conditioning in single-supply systems. It delivers 1 µV typical offset voltage, 0.005 µV/°C drift, and 145 dB open-loop gain at 5 V supply, enabling high-accuracy amplification in sensor front-ends and instrumentation circuits.
For engineers reviewing the AD8572ARUZ-REEL datasheet, AD8572ARUZ-REEL pinout, AD8572ARUZ-REEL application, or AD8572ARUZ-REEL equivalent, key selection criteria include ultralow drift over −40°C to +125°C, rail-to-rail swing with 2.7 V to 5 V operation, and absence of external capacitors required for auto-zero stabilization.
Technical Context
The AD8572ARUZ-REEL employs a spread-spectrum random-frequency auto-zero architecture that eliminates intermodulation distortion while maintaining sub-µV offset stability across temperature. Its dual CMOS amplifier core integrates a main amplifier and a nulling amplifier, both featuring rail-to-rail input stages built from parallel NMOS/PMOS differential pairs.
This topology enables simultaneous high dc precision (1 µV VOS, 5 nV/°C drift) and ac performance (1.5 MHz GBP, 0.4 V/µs slew rate at 5 V), with overload recovery in 50 µs and no phase reversal under input overvoltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 1 µV typical - enables ≤10 µV total error in 10× gain sensor circuits without trimming |
| Offset Drift | 0.005 µV/°C - contributes <0.6 µV error over full −40°C to +125°C range |
| Supply Range | 2.7 V to 5 V single supply - supports battery-powered and low-voltage industrial systems |
| Open-Loop Gain | 145 dB typical - ensures <0.001% gain error in unity-gain stable configurations |
| CMRR / PSRR | 140 dB / 130 dB typical - rejects common-mode noise and supply ripple in noisy environments |
| Output Swing | Rail-to-rail - delivers full 0–5 V output range into 10 kΩ load at 5 V supply |
| Supply Current | 750 µA per amplifier - allows dual-channel precision amplification within 1.5 mA total budget |
Pinout & Package
AD8572ARUZ-REEL is housed in an 8-lead TSSOP (RU suffix) package with exposed pad, rated for −40°C to +125°C operation. Thermal resistance θJA = 240°C/W reflects surface-mount thermal performance on standard PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −IN A | Inverting input of Amplifier A - accepts signals down to V− rail |
| 2 | +IN A | Noninverting input of Amplifier A - accepts signals up to V+ rail |
| 3 | V− | Negative supply terminal - connects to ground in single-supply operation |
| 4 | OUT B | Output of Amplifier B - rail-to-rail capable, ±30 mA drive |
| 5 | −IN B | Inverting input of Amplifier B - independent channel with same specs as A |
| 6 | +IN B | Noninverting input of Amplifier B - fully differential input capability |
| 7 | OUT A | Output of Amplifier A - matches OUT B in drive strength and swing |
| 8 | V+ | Positive supply terminal - accepts 2.7 V to 5 V, decoupling required |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Random-frequency auto-zero eliminates 1/f noise and intermodulation distortion without external capacitors |
| Rail-to-rail I/O | Full input common-mode range (0 V to V+) and output swing (within 10 mV of rails at light load) |
| High dc precision | 1 µV offset + 0.005 µV/°C drift ensures stable baseline in long-duration measurements |
| Single-supply operation | Functional from 2.7 V to 5 V - compatible with Li-ion, 3.3 V logic, and automotive 5 V domains |
| Robust overload recovery | 50 µs recovery from output saturation - prevents settling delays in fast transient applications |
Applications
| Temperature Sensors | Pressure Sensors |
|---|---|
Use Scenario: Amplifying low-level thermistor or RTD bridge outputs in HVAC control units operating from −25°C to +85°C ambient. IC Role / Device Role / Timing Role: Precision dc-coupled gain stage with matched drift cancellation across dual channels for differential sensing. Use Value: Maintains <0.1°C measurement uncertainty over full temperature range without calibration. | Use Scenario: Signal conditioning for piezoresistive pressure transducers in industrial process monitoring with 4–20 mA loop interfaces. IC Role / Device Role / Timing Role: Dual-channel amplifier: one for sensor excitation regulation, one for bridge output amplification. Use Value: Enables ratiometric measurement with <1 ppm/°C system drift contribution from amplification stage. |
| Strain Gage Amplifiers | Medical Instrumentation |
Use Scenario: Wheatstone bridge amplification in structural health monitoring systems deployed outdoors with wide thermal cycling. IC Role / Device Role / Timing Role: First-stage instrumentation-grade amplifier with rail-to-rail output driving ADC reference buffer. Use Value: Delivers 16-bit effective resolution over −40°C to +125°C without hardware trimming or software compensation. | Use Scenario: Front-end amplification for ECG electrode signals in portable patient monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power, low-noise dual amplifier: one for lead-off detection, one for signal path amplification. Use Value: Achieves 0.5 µVpp 0.1–10 Hz noise and <1 µV offset drift - meets IEC 60601-2-27 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Higher 0.005 µV/°C drift (same), but lower 5.2 nV/√Hz noise at 1 kHz vs. AD8572ARUZ-REEL's 51 nV/√Hz | Better for low-noise ac-coupled biosignal paths; less optimal for ultra-stable dc offset-critical bridges | Select OPA2189IDR when broadband noise dominates error budget; retain AD8572ARUZ-REEL for lowest drift-limited dc accuracy |
| LTC2057HMS8#PBF | Higher 0.5 µV max offset (vs. 1 µV typ), wider 6 V supply range, but superior 0.03 µV/°C max drift spec | Suitable for high-voltage industrial sensors; requires tighter layout for EMI immunity due to higher bandwidth | Choose LTC2057HMS8#PBF for extended supply range and guaranteed max drift; prefer AD8572ARUZ-REEL for best typical offset and cost-sensitive designs |
Compared with OPA2189IDR and LTC2057HMS8#PBF, AD8572ARUZ-REEL offers the lowest typical offset voltage and optimal balance of drift, power (750 µA), and single-supply simplicity for embedded sensor nodes requiring long-term dc stability without calibration.
Availability
AD8572ARUZ-REEL is available at Aetrix Electronics and suitable for temperature sensors, pressure sensors, and precision current sensing requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for AD8572ARUZ-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 AD857x family was designed specifically for ultra-precision, low-drift dc signal conditioning in harsh thermal environments - targeting sensor interfaces where auto-zero performance previously demanded expensive chopper-stabilized solutions.
FAQ
What is the maximum operating temperature range for AD8572ARUZ-REEL?
AD8572ARUZ-REEL is specified for continuous operation from −40°C to +125°C, meeting extended industrial and automotive temperature requirements. This rating is validated across all electrical parameters including offset drift (0.005 µV/°C typical) and output drive capability, with no derating needed within this range.
Does AD8572ARUZ-REEL require external capacitors for auto-zero stabilization?
No, AD8572ARUZ-REEL does not require external capacitors for auto-zero operation. Its internal spread-spectrum random-frequency auto-zero architecture uses on-chip capacitors, eliminating the need for external components while preventing intermodulation distortion in ac-coupled applications.
Can AD8572ARUZ-REEL operate from a 3.3 V supply?
Yes, AD8572ARUZ-REEL operates reliably from 2.7 V to 5 V single supply, making 3.3 V fully supported. At 3.3 V, it maintains rail-to-rail input/output swing, 1 µV typical offset, and 750 µA supply current per amplifier - ideal for mixed-signal IoT sensor nodes.
What is the overload recovery time of AD8572ARUZ-REEL?
The overload recovery time of AD8572ARUZ-REEL is 50 µs typical, measured from saturated output to within 0.1% of final value. This fast recovery ensures minimal settling delay in applications with large transient inputs, such as strain gage impact detection or thermocouple cold-junction compensation.
Is AD8572ARUZ-REEL pin-compatible with other dual op amps in TSSOP-8 packages?
AD8572ARUZ-REEL follows the industry-standard dual op amp pinout (1=−IN A, 2=+IN A, 3=V−, 4=OUT B, 5=−IN B, 6=+IN B, 7=OUT A, 8=V+), matching common TSSOP-8 dual op amps like OP2177 and ADA4077. However, functional compatibility requires verification of supply range, offset, and drive requirements for each target application.
AD8572ARUZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 1.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 160 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 850µA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AD8572ARUZ-REEL FAQ
1.How can I place an order for AD8572ARUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8572ARUZ-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 AD8572ARUZ-REEL reliable?
The price and inventory of AD8572ARUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8572ARUZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8572ARUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8572ARUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8572ARUZ-REEL?
AD8572ARUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8572ARUZ-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 AD8572ARUZ-REEL?
For technical support, including AD8572ARUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8572ARUZ-REEL requirements.
6.How does Aetrix verify that AD8572ARUZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8572ARUZ-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 AD8572ARUZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8572ARUZ-REEL?
All AD8572ARUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8572ARUZ-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 AD8572ARUZ-REEL part is unused and in its original packaging.
Return procedure for AD8572ARUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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