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Analog Devices Inc. AD8628AUJ-REEL7
- Part No.:
- AD8628AUJ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AD8628AUJ-REEL7.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:2,680
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Product details
Overview
AD8628AUJ-REEL7 from Analog Devices is a zero-drift, rail-to-rail input/output operational amplifier in a 5-lead TSOT package, delivering 1 µV offset voltage, 0.002 µV/°C drift, and 2.5 MHz gain bandwidth at 5 V supply. It operates from −40°C to +125°C and supports precision sensor signal conditioning in automotive and industrial systems.
For engineers reviewing the AD8628AUJ-REEL7 datasheet, AD8628AUJ-REEL7 pinout, AD8628AUJ-REEL7 application, or AD8628AUJ-REEL7 equivalent, key selection criteria include ultralow dc error budget, single-supply 2.7–5 V operation, rail-to-rail swing, 100 pA max input bias current, and 50 µs overload recovery-critical for thermocouple amplifiers, strain gage interfaces, and high-resolution DAC output stages.
Technical Context
The AD8628AUJ-REEL7 implements a patented dual-stage auto-zeroing and chopping architecture operating at 15 kHz, eliminating 1/f noise while minimizing switching artifacts. Its ping-pong topology enables simultaneous correction of offset and low-frequency drift without aliasing wideband noise into the baseband.
This architecture delivers true 16-bit accuracy in systems with 5–10 kHz signal bandwidths, supports unipolar DAC output buffering with 38 µV LSB compatibility, and prevents output phase reversal when inputs remain within rail limits-enabling robust operation in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 1 µV typical (max 10 µV over −40°C to +125°C): enables ≥1000× closed-loop gain without significant dc output error. |
| Offset Drift | 0.002 µV/°C typical: contributes <0.25 µV total drift across full temperature range-negligible for calibrated precision sensors. |
| Supply Range | 2.7 V to 5.0 V single supply: compatible with automotive 3.3 V and industrial 5 V rails without level-shifting. |
| Gain Bandwidth | 2.5 MHz at 5 V: supports stable unity-gain buffer and ≥10× gain configurations up to ~200 kHz. |
| Input Bias Current | 100 pA max: avoids significant voltage error across high-impedance sources like thermopiles or photodiodes. |
| Noise (0.1–10 Hz) | 0.5 µV p-p: ensures sub-µV-level resolution in dc-coupled measurements lasting >200 ms. |
| Overload Recovery | 50 µs: recovers faster than competing auto-zero amps by >90%, critical for switched-capacitor ADC driver applications. |
Pinout & Package
AD8628AUJ-REEL7 is housed in a 5-lead TSOT (UJ-5) package-0.8 mm height, 1.5 mm × 1.0 mm footprint-with exposed pad for thermal enhancement. Thermal resistance θJA = 207°C/W on standard two-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Rail-to-rail swing: delivers 4.95 V high / 10 mV low into 10 kΩ load at 5 V supply-maximizes dynamic range. |
| 2 (−IN) | Inverting Input | High-impedance node (100 pA max bias): requires guarded layout for <1 nA leakage paths in precision designs. |
| 3 (V−) | Negative Supply | Ground reference for single-supply operation; must be low-impedance to minimize PSRR degradation. |
| 4 (+IN) | Noninverting Input | Common-mode range extends to both rails: enables direct sensing of signals near ground or V+ without level shift. |
| 5 (V+) | Positive Supply | Accepts 2.7–5.0 V; internal ESD diodes clamp input overvoltage to ±0.3 V beyond rails-requires series resistors if overvoltage risk exists. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Patented auto-zero + chopping at 15 kHz eliminates 1/f noise and holds offset stable over time and temperature. |
| Rail-to-rail I/O | Enables full-scale signal utilization from GND to V+-reduces need for biasing networks and improves SNR in low-voltage systems. |
| No external capacitor required | Internal compensation allows immediate use in unity-gain stable configurations-simplifies BOM and layout. |
| Automotive qualified | Qualified per AEC-Q100 Grade 1 (−40°C to +125°C); includes enhanced ESD protection (HBM ±7 kV in SOIC, ±1 kV in TSOT). |
| Low digital switching noise | Reduced chopper artifacts vs. legacy auto-zero amps-minimizes post-filtering requirements in sensitive analog front-ends. |
Applications
| Automotive Pressure Sensors | Medical Thermocouple Amplifiers |
|---|---|
Use Scenario: Signal conditioning for piezoresistive pressure transducers in engine manifold or brake fluid monitoring. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with gain ≥100, rejecting common-mode noise from ignition systems. Use Value: 0.002 µV/°C drift ensures calibration remains valid across engine thermal cycles-eliminating field recalibration. | Use Scenario: Cold-junction compensation and amplification of µV-level thermocouple outputs in patient monitors. IC Role / Device Role / Timing Role: Low-noise, low-drift preamplifier with 0.5 µV p-p (0.1–10 Hz) noise enabling accurate sub-0.1°C temperature resolution. Use Value: Rail-to-rail output swing maximizes ADC utilization without external level-shifting-preserving 16-bit effective resolution. |
| Precision Current Shunt Sensing | High-Accuracy DAC Output Buffer |
Use Scenario: Bidirectional current measurement in battery management systems using 100 µΩ shunts at 1 mA–10 A range. IC Role / Device Role / Timing Role: High-CMRR difference amplifier with 130 dB CMRR rejecting common-mode voltage up to 5 V. Use Value: 1 µV offset ensures ≤100 nA measurement error at 1 mA-critical for fuel gauging accuracy in EVs. | Use Scenario: Output stage for 16-bit DACs (e.g., AD5541) with 2.5 V reference generating 0–2.5 V unipolar output. IC Role / Device Role / Timing Role: Unity-gain buffer compensating for DAC zero-code error caused by input bias current × output impedance. Use Value: 100 pA max input bias current × 6 kΩ DAC impedance = 0.6 µV error-well below 38 µV LSB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8629ARMZ | 8-lead MSOP package; identical electrical specs but dual-channel; higher θJA (190°C/W) than AD8628AUJ-REEL7 (207°C/W). | Requires PCB redesign for dual-channel use; not pin-compatible due to different pin count and layout. | Select when dual-channel functionality is needed and space permits larger MSOP footprint. |
| LTC2050IMS8#TRPBF | 1.5 µV max offset, 0.015 µV/°C drift, 1.5 MHz GBW; lower supply current (850 µA) but no rail-to-rail output swing. | Cannot drive to V+ rail-limits dynamic range in unipolar DAC buffering or low-voltage sensor interfaces. | Choose only if ultra-low power dominates over rail-to-rail output and lowest drift. |
Compared with AD8628AUJ-REEL7, AD8629ARMZ offers channel count flexibility at the cost of package size and thermal performance, while LTC2050IMS8#TRPBF trades rail-to-rail output and superior drift for lower quiescent current-neither is pin-compatible, and both require circuit validation for dc error and settling behavior.
Availability
AD8628AUJ-REEL7 is available at Aetrix Electronics and suitable for automotive pressure sensing, medical thermocouple amplification, and precision current shunt monitoring requiring stable component supply across extended temperature ranges.
Supply support for AD8628AUJ-REEL7 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 Wilmington, MA.
The AD8628 family belongs to Analog Devices' zero-drift precision op amp product line, engineered specifically for applications demanding nanovolt-level dc accuracy, minimal thermal drift, and robust operation in automotive and industrial environments.
FAQ
What is the maximum operating temperature range for AD8628AUJ-REEL7?
The AD8628AUJ-REEL7 is specified for operation from −40°C to +125°C, meeting extended industrial and automotive grade requirements. This range is validated per AEC-Q100 Grade 1 standards, and all key parameters-including offset voltage, drift, and CMRR-are guaranteed across this full span without derating.
Does AD8628AUJ-REEL7 require external capacitors for stability?
No, AD8628AUJ-REEL7 is internally compensated and unity-gain stable without external components. Its design eliminates the need for external compensation capacitors, simplifying layout and reducing bill-of-materials cost-verified across all operating conditions in the official datasheet Rev. M.
Is AD8628AUJ-REEL7 pin-compatible with other AD8628 variants like AD8628ARZ?
No, AD8628AUJ-REEL7 uses a 5-lead TSOT (UJ-5) package with distinct pinout, while AD8628ARZ uses an 8-lead SOIC (R-8) package. The two share identical electrical specifications but differ in pin count, physical layout, thermal characteristics, and ESD ratings-PCB redesign is required for substitution.
What is the overload recovery time of AD8628AUJ-REEL7, and how does it compare to legacy auto-zero amplifiers?
AD8628AUJ-REEL7 recovers from output saturation in 50 µs-less than 10 µs for positive overload and 9 µs for negative overload per datasheet Table 5. This is over 60× faster than Competitor A (650 µs) and >4000× faster than Competitor B (40,000 µs), enabling reliable use with switched-capacitor ADCs and fast transient sensor signals.
Can AD8628AUJ-REEL7 be used with a 2.7 V single supply?
Yes, AD8628AUJ-REEL7 is fully specified for 2.7 V to 5.0 V single-supply operation. At 2.7 V, it maintains rail-to-rail input/output swing (0–2.7 V), 2 MHz gain bandwidth, 0.5 µV p-p (0.1–10 Hz) noise, and 1 µV typical offset-making it suitable for battery-powered portable instrumentation.
AD8628AUJ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- 2.5 MHz
- Current - Input Bias:
- 30 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 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
AD8628AUJ-REEL7 FAQ
1.How can I place an order for AD8628AUJ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8628AUJ-REEL7 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 AD8628AUJ-REEL7 reliable?
The price and inventory of AD8628AUJ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8628AUJ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8628AUJ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8628AUJ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8628AUJ-REEL7?
AD8628AUJ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8628AUJ-REEL7 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 AD8628AUJ-REEL7?
For technical support, including AD8628AUJ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8628AUJ-REEL7 requirements.
6.How does Aetrix verify that AD8628AUJ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8628AUJ-REEL7 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 AD8628AUJ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8628AUJ-REEL7?
All AD8628AUJ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8628AUJ-REEL7, 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 AD8628AUJ-REEL7 part is unused and in its original packaging.
Return procedure for AD8628AUJ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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