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Analog Devices Inc. AD8628AUJZ-REEL
- Part No.:
- AD8628AUJZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AD8628AUJZ-REEL.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
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Product details
Overview
AD8628AUJZ-REEL from Analog Devices is a zero-drift, rail-to-rail input/output operational amplifier in a 5-lead TSOT package, delivering 1 µV max offset voltage, 0.002 µV/°C drift, and 2.5 MHz gain bandwidth. It operates from 2.7 V to 5 V single supply and supports precision sensor signal conditioning in automotive and industrial environments.
For engineers reviewing the AD8628AUJZ-REEL datasheet, AD8628AUJZ-REEL pinout, AD8628AUJZ-REEL application, or AD8628AUJZ-REEL equivalent, key selection criteria include ultralow dc error budget, 5-Lead TSOT thermal performance (θJA = 207°C/W), overload recovery time (<10 µs), and qualification for −40°C to +125°C operation without external capacitors.
Technical Context
The AD8628AUJZ-REEL 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 achieves flat voltage noise density (22 nV/√Hz at 1 kHz) and 0.5 µV p-p (0.1 Hz–10 Hz) integrated noise.
This amplifier delivers 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 CMRR and PSRR across −40°C to +125°C. It requires no external components and avoids phase reversal when inputs remain within supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 1 µV typical; enables ≥1000× closed-loop gain without significant dc output error |
| Offset Drift | 0.002 µV/°C max; ensures <0.25 µV total drift over full −40°C to +125°C range |
| Supply Range | 2.7 V to 5.0 V single supply; compatible with Li-ion, 3.3 V, and 5 V systems |
| Gain Bandwidth | 2.5 MHz at 5 V; supports stable unity-gain and high-precision closed-loop configurations |
| Input Bias Current | 100 pA max; minimizes voltage error across high-impedance sensor sources (e.g., thermopiles) |
| Overload Recovery | 6 µs (positive), 9 µs (negative); enables fast settling after transient saturation in DAC buffer or current-sense paths |
| Output Swing | Within 1 mV of rails (RL = 100 kΩ); maximizes dynamic range in low-voltage, single-supply systems |
Pinout & Package
AD8628AUJZ-REEL is housed in a 5-lead Thin Small Outline Transistor (TSOT) package (UJ-5), measuring 1.5 mm × 1.0 mm × 0.55 mm, with exposed pad for thermal enhancement and θJA = 207°C/W on standard PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; drives loads up to ±30 mA (10 kΩ min load) |
| 2 (−IN) | Inverting input | High-impedance node (100 pA bias); accepts signals from 0 V to VS |
| 3 (V−) | Negative supply / ground | Reference for single-supply operation; must be connected to system GND |
| 4 (+IN) | Non-inverting input | High-impedance node; supports rail-to-rail common-mode input (0 V to VS) |
| 5 (V+) | Positive supply | Accepts 2.7 V to 5.0 V; internal ESD protection limits input overvoltage to ±0.3 V beyond rails |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Patented auto-zero + chopping eliminates 1/f noise and holds offset drift ≤0.002 µV/°C |
| No external capacitor required | Internal compensation enables stable operation with any capacitive load ≤100 pF |
| Rail-to-rail I/O | Enables full-scale signal utilization in 2.7 V–5 V systems without level-shifting circuitry |
| Automotive qualification | Qualified per AEC-Q100 Grade 1; supports reliable operation in engine control, cabin sensing, and ADAS subsystems |
| Low digital switching noise | 15 kHz internal clock minimizes interference in sensitive analog front-ends (e.g., thermocouple, photodiode amps) |
Applications
| Automotive Pressure Sensors | Medical Thermopile Amplifiers |
|---|---|
Use Scenario: Signal conditioning for piezoresistive pressure sensors in brake fluid, HVAC, and tire pressure monitoring systems. IC Role / Device Role / Timing Role: Precision dc-coupled amplifier with ultra-low offset and drift to preserve microvolt-level sensor output integrity across temperature. Use Value: Eliminates calibration drift over vehicle lifetime; maintains <±0.1% FS accuracy from −40°C to +125°C without software compensation. | Use Scenario: Preamplification of thermopile outputs (100–300 µV) in non-contact ear and forehead thermometers. IC Role / Device Role / Timing Role: Low-noise, low-bias-current transimpedance or differential amplifier enabling accurate dc measurement over >200 ms integration windows. Use Value: 0.5 µV p-p (0.1–10 Hz) noise and 100 pA bias current prevent signal degradation from sensor source impedance and thermal EMF. |
| Precision Current Shunt Sensing | High-Accuracy DAC Output Buffer |
Use Scenario: Bidirectional current measurement in battery fuel gauging and electric power steering torque feedback. IC Role / Device Role / Timing Role: High-CMRR difference amplifier for sub-millivolt shunt voltage amplification with minimal offset-induced zero-error. Use Value: 1 µV offset ensures <10 nA equivalent error at 10 mΩ shunt; enables ±1 mA resolution in 10 A full-scale systems. | Use Scenario: Output stage for 16-bit unipolar DACs (e.g., AD5541) with 2.5 V reference (LSB = 38 µV). IC Role / Device Role / Timing Role: Rail-to-rail output buffer with low offset and fast settling to preserve DAC code accuracy and monotonicity. Use Value: 1 µV offset contributes <3% of LSB error; 1 µs settling adds only 0.4 µs to combined DAC+amp total settling time. |
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 core specs but higher θJA (190°C/W); dual-channel configuration | Requires PCB redesign for dual-amplifier use cases; not drop-in for single-channel space-constrained layouts | Select when dual-channel functionality or MSOP assembly compatibility is required |
| LTC2050HMS8#TRPBF | 1.5 µV max offset; 0.015 µV/°C drift; 1.5 MHz GBW; 8-lead MSOP; higher supply current (1.3 mA) | Lower bandwidth and higher drift limit use in >10 kHz signal chains or extended temperature calibration cycles | Select when lower cost or availability outweighs need for sub-µV offset and 2.5 MHz bandwidth |
Compared with AD8628AUJZ-REEL, AD8629ARMZ offers dual-channel integration at the expense of board area and thermal resistance, while LTC2050HMS8#TRPBF trades 50% higher offset and 40% lower bandwidth for broader distributor stock and simplified sourcing-neither is pin-compatible, and both require layout or firmware adaptation for direct replacement.
Availability
AD8628AUJZ-REEL is available at Aetrix Electronics and suitable for automotive pressure sensing, medical thermopile amplification, precision current shunt monitoring, and high-resolution DAC buffering requiring stable component supply across extended temperature ranges.
Supply support for AD8628AUJZ-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 Wilmington, MA.
The AD8628 family belongs to Analog Devices' zero-drift precision op amp product line, engineered specifically for ultra-low-offset, low-drift signal conditioning in harsh-environment applications including automotive, medical instrumentation, and industrial sensing.
FAQ
What is the maximum operating temperature range for the AD8628AUJZ-REEL?
The AD8628AUJZ-REEL is specified for continuous operation from −40°C to +125°C, qualified per extended industrial requirements. Its offset voltage remains ≤10 µV and drift stays ≤0.02 µV/°C across this full range, making it suitable for under-hood automotive and industrial control applications where ambient temperatures exceed 105°C.
Does the AD8628AUJZ-REEL require external capacitors for stability?
No, the AD8628AUJZ-REEL is internally compensated and does not require external capacitors for unity-gain stability. It remains stable driving capacitive loads up to 100 pF directly, simplifying layout in space-constrained TSOT applications such as portable medical sensors and automotive modules.
How does the AD8628AUJZ-REEL handle input overvoltage conditions?
The AD8628AUJZ-REEL features ESD diodes between each input and supply rail. If either input exceeds the supply rail by more than 0.3 V, those diodes conduct. To prevent damage, external series resistors must limit current to <5 mA. This protection scheme applies identically across all AD8628 variants, including AD8628AUJZ-REEL.
Is the AD8628AUJZ-REEL pin-compatible with other AD8628 package variants?
No-AD8628AUJZ-REEL uses the 5-lead TSOT (UJ-5) pinout, which differs from the 5-lead SOT-23 (RJ-5) and 8-lead SOIC (R-8) variants. Pin 1 (OUT) and pin 5 (V+) locations are unique to UJ-5; PCB layout must be redesigned when migrating between packages, even within the same AD8628 family.
What is the overload recovery time specification for the AD8628AUJZ-REEL?
The AD8628AUJZ-REEL recovers from positive input overload in 6 µs and negative input overload in 9 µs-measured at 5 V supply. This ultrafast recovery is enabled by its dual-loop auto-zero architecture and is critical in applications like switched-capacitor ADC drivers or current-sense amplifiers subjected to transient fault currents.
AD8628AUJZ-REEL 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:
- Active
- 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:
- -
- 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
AD8628AUJZ-REEL FAQ
1.How can I place an order for AD8628AUJZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8628AUJZ-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 AD8628AUJZ-REEL reliable?
The price and inventory of AD8628AUJZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8628AUJZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8628AUJZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8628AUJZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8628AUJZ-REEL?
AD8628AUJZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8628AUJZ-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 AD8628AUJZ-REEL?
For technical support, including AD8628AUJZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8628AUJZ-REEL requirements.
6.How does Aetrix verify that AD8628AUJZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8628AUJZ-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 AD8628AUJZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8628AUJZ-REEL?
All AD8628AUJZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8628AUJZ-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 AD8628AUJZ-REEL part is unused and in its original packaging.
Return procedure for AD8628AUJZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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