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Analog Devices Inc. AD8574TRUZ-EP
- Part No.:
- AD8574TRUZ-EP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8574TRUZ-EP.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,916
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Product details
Overview
AD8574TRUZ-EP from Analog Devices is a quad, zero-drift, rail-to-rail input/output operational amplifier optimized for precision DC-coupled signal conditioning in harsh environments. It delivers 1 μV typical offset voltage, 0.005 μV/°C drift, and 145 dB open-loop gain at 5 V supply, operating across −55°C to +125°C for aerospace-grade sensor front-ends.
For engineers reviewing the AD8574TRUZ-EP datasheet, AD8574TRUZ-EP pinout, AD8574TRUZ-EP application, or AD8574TRUZ-EP equivalent, key selection criteria include ultralow drift over military temperature range, single-supply rail-to-rail I/O swing down to 2.7 V, and enhanced product qualification for defense systems requiring controlled baseline and AQEC compliance.
Technical Context
The AD8574TRUZ-EP employs a patented spread-spectrum auto-zero architecture that eliminates chopper-induced intermodulation distortion while maintaining sub-μV offset and nanovolt-per-degree drift. Its four independent amplifiers share no internal coupling, enabling simultaneous high-precision measurements in multi-channel sensor arrays.
It features true rail-to-rail input common-mode range (0 V to VS) and output swing (within 1 mV of rails at light load), with 130 dB PSRR and 140 dB CMRR ensuring stability in noisy power and mixed-signal environments typical of avionics and instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 1 μV typical - enables <10 ppm error in 10 V full-scale precision current sensing without calibration |
| Offset Drift | 0.005 μV/°C - ensures <0.6 μV total drift over −55°C to +125°C, critical for unattended field deployments |
| Supply Range | 2.7 V to 5 V single supply - supports direct interface with low-voltage ADCs and battery-powered systems |
| Open-Loop Gain | 145 dB typical - provides >300,000 V/V loop gain for stable closed-loop gain accuracy in strain gage bridges |
| CMRR / PSRR | 140 dB / 130 dB typical - rejects >100 dB of common-mode and supply noise in high-gain transducer interfaces |
| Input Bias Current | 10 pA typical - minimizes voltage error across high-impedance sources like thermopiles and piezoresistive sensors |
| Quiescent Current | 750 μA per amplifier - allows quad-channel precision amplification within 3 mA total budget for space-constrained modules |
Pinout & Package
AD8574TRUZ-EP is housed in a 14-lead TSSOP (RU-14) package per JEDEC MO-153-AB-1, with 0.65 mm pitch, 4.4 mm × 5.0 mm body, and 1.2 mm max height. Thermal resistance θJA = 180°C/W enables operation at full military temperature range without forced cooling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 13 | OUT A/B/C/D | Amplifier outputs - rail-to-rail swing supports direct drive of SAR ADC reference inputs or low-side current sense monitors |
| 2, 6, 9, 12 | −IN A/B/C/D | Inverting inputs - matched layout minimizes thermal EMF errors in differential configurations |
| 3, 5, 10, 14 | +IN A/B/C/D | Non-inverting inputs - high-impedance node (<1 pA bias) preserves signal integrity from high-Z sensors |
| 4 | V+ | Positive supply - accepts 2.7 V to 5 V; decoupling required within 1 cm for PSRR performance |
| 11 | V− | Negative supply / ground - tied to system GND; serves as reference for single-supply operation |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and thermal drift accumulation, enabling stable DC gain over decades in sealed instrumentation |
| Military temperature rating | −55°C to +125°C operation with full electrical specs guaranteed - qualified per AQEC standard for defense platforms |
| No external capacitors | Internally compensated for unity-gain stability with 1.5 MHz GBP - reduces BOM count and PCB area in compact sensor nodes |
| Rail-to-rail I/O | Input range spans 0 V to VS; output swings to within 1 mV of rails - maximizes dynamic range in 3.3 V systems |
| Enhanced product controls | Controlled manufacturing baseline, single fab/assembly/test site, and PCN support - ensures long-term supply continuity for aerospace programs |
Applications
| Temperature Sensors | Pressure Sensors |
|---|---|
Use Scenario: Amplifying low-level output from platinum RTD or thermistor bridges in engine control units. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and offset trimming. Use Value: 1 μV offset and 0.005 μV/°C drift enable ±0.05°C measurement accuracy over full military temperature range without recalibration. |
Use Scenario: Conditioning millivolt-level signals from piezoresistive pressure transducers in flight control hydraulics. IC Role / Device Role / Timing Role: Low-noise, high-CMRR signal conditioner for ratiometric bridge excitation and readout. Use Value: 140 dB CMRR rejects common-mode noise from PWM-driven solenoid valves; rail-to-rail output drives 16-bit ADCs directly. |
| Precision Current Sensing | Strain Gage Amplifiers |
Use Scenario: High-side current monitoring in satellite power distribution units with 0.1% accuracy requirement. IC Role / Device Role / Timing Role: Bidirectional current-sense amplifier with integrated gain-setting resistors and output clamping. Use Value: 10 pA input bias current prevents error in 1 MΩ shunt-based designs; 750 μA per amp enables quad-channel monitoring within 3 mA budget. |
Use Scenario: Wheatstone bridge amplification in structural health monitoring systems on aircraft wings. IC Role / Device Role / Timing Role: Low-drift, low-noise buffer and gain stage for quarter-bridge configurations with remote sensing. Use Value: 145 dB open-loop gain ensures <0.001% gain error at G = 1000; overload recovery time of 50 μs prevents settling delays during vibration events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8574TRU-EP | Same die, non-RoHS-compliant lead finish (Pb/Sn); identical electrical specs and military temp rating | Acceptable where RoHS exemption applies (e.g., legacy defense contracts) | Select when Pb-free requirement is waived and cost sensitivity favors standard finish |
| ADA4522-4ARUZ | Zero-drift quad op amp with 2.5 μV offset, 0.015 μV/°C drift, and 5.5 V max supply - higher drift, lower max voltage | Better suited for commercial industrial systems with less stringent drift requirements | Choose for cost-sensitive non-military applications where 0.015 μV/°C drift is acceptable |
Compared with AD8574TRUZ-EP, AD8574TRU-EP offers identical performance with non-RoHS finish for exempted defense use, while ADA4522-4ARUZ trades military-grade drift and voltage range for lower cost in commercial-grade precision systems.
Availability
AD8574TRUZ-EP is available at Aetrix Electronics and suitable for aerospace telemetry, avionics sensor interfaces, and defense-grade instrumentation requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for AD8574TRUZ-EP 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, serving industrial, automotive, communications, and defense markets since 1965.
The AD857x family delivers zero-drift precision amplification for mission-critical sensor signal chains where long-term DC stability and extreme environmental resilience are mandatory.
FAQ
What is the maximum operating temperature range for the AD8574TRUZ-EP?
The AD8574TRUZ-EP is fully specified from −55°C to +125°C, with all electrical parameters guaranteed across this military temperature range. This includes offset voltage, drift, gain, and CMRR performance, making it suitable for deployment in jet engines, space payloads, and armored vehicle electronics where ambient extremes are routine.
Does the AD8574TRUZ-EP require external compensation capacitors?
No, the AD8574TRUZ-EP is internally compensated for unity-gain stability and operates reliably with a gain-bandwidth product of 1.5 MHz at 5 V supply. External capacitors are unnecessary for basic configurations, reducing bill-of-materials count and PCB footprint in compact sensor modules where the AD8574TRUZ-EP is deployed.
How does the AD8574TRUZ-EP achieve its ultralow input bias current?
The AD8574TRUZ-EP uses an auto-zero architecture with CMOS input stages and guarded input traces to achieve 10 pA typical input bias current. This design minimizes leakage paths and thermal EMF effects, preserving signal fidelity in high-impedance applications such as thermopile amplification and pH electrode buffering where the AD8574TRUZ-EP is commonly used.
Is the AD8574TRUZ-EP RoHS compliant?
Yes, the "Z" suffix in AD8574TRUZ-EP denotes full RoHS compliance per EU Directive 2011/65/EU, including lead-free terminations and halogen-free molding compound. This certification is verified through material declarations and testing, supporting sustainability requirements in modern defense and aerospace procurement programs involving the AD8574TRUZ-EP.
What packaging format is used for the AD8574TRUZ-EP?
The AD8574TRUZ-EP is supplied in a 14-lead Thin Shrink Small Outline Package (TSSOP), designated RU-14 per JEDEC MO-153-AB-1. Its 0.65 mm pitch, 4.4 mm × 5.0 mm footprint, and 1.2 mm max height support high-density layouts in ruggedized PCB assemblies where the AD8574TRUZ-EP serves as the core analog front-end.
AD8574TRUZ-EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 4
- 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 (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
AD8574TRUZ-EP FAQ
1.How can I place an order for AD8574TRUZ-EP through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8574TRUZ-EP 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 AD8574TRUZ-EP reliable?
The price and inventory of AD8574TRUZ-EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8574TRUZ-EP is usually 5 days.
3.What payment methods are accepted for AD8574TRUZ-EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8574TRUZ-EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8574TRUZ-EP?
AD8574TRUZ-EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8574TRUZ-EP 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 AD8574TRUZ-EP?
For technical support, including AD8574TRUZ-EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8574TRUZ-EP requirements.
6.How does Aetrix verify that AD8574TRUZ-EP is sourced from the original manufacturer or authorized distributors?
All AD8574TRUZ-EP 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 AD8574TRUZ-EP meets industry standards.
7.What is the process for return or replacement of AD8574TRUZ-EP?
All AD8574TRUZ-EP units undergo pre-shipment inspection (PSI). If there is an issue with AD8574TRUZ-EP, 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 AD8574TRUZ-EP part is unused and in its original packaging.
Return procedure for AD8574TRUZ-EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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