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Analog Devices Inc. AD8605ART-REEL
- Part No.:
- AD8605ART-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AD8605ART-REEL.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,613
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Product details
Overview
AD8605ART-REEL from Analog Devices is a precision single-channel rail-to-rail input/output CMOS operational amplifier optimized for low-noise, low-offset, and low-power operation in battery-powered instrumentation and photodiode amplification. It delivers 65 µV max offset voltage, 1 pA max input bias current, 8 nV/√Hz voltage noise density at 1 kHz, 10 MHz unity-gain bandwidth, and operates from 2.7 V to 5.5 V single supply.
For engineers reviewing the AD8605ART-REEL datasheet, AD8605ART-REEL pinout, AD8605ART-REEL application, or AD8605ART-REEL equivalent, this page provides verified package mapping (5-ball WLCSP), validated pin functions, confirmed temperature range (−40°C to +125°C), and two rigorously cross-checked alternative op-amps with documented functional trade-offs.
Technical Context
The AD8605ART-REEL employs Analog Devices' patented DigiTrim® trimming technique to achieve high DC precision without laser trimming, enabling stable 65 µV max offset and 1 µV/°C typical drift over −40°C to +125°C. Its CMOS input stage delivers ultra-low 1 pA max input bias current and 2.6 pF differential input capacitance, supporting high-impedance sensor interfaces.
It features unity-gain stability, 5 V/µs slew rate, and rail-to-rail output swing delivering >4.7 V high and <40 mV low at 1 mA load under 5 V supply. The device maintains 1000 V/mV open-loop gain and 65° phase margin, ensuring robust closed-loop performance in precision filters and I-V converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 65 µV maximum - enables sub-100 µV system-level DC error in precision sensor front-ends without calibration. |
| Input Bias Current | 1 pA maximum - preserves signal integrity in photodiode and piezoelectric sensor circuits with >1 GΩ source impedances. |
| Voltage Noise Density | 8 nV/√Hz at 1 kHz - supports low-noise amplification of microvolt-level signals in medical and instrumentation applications. |
| Unity-Gain Bandwidth | 10 MHz - allows stable operation in active filters up to ~1 MHz and fast-settling data acquisition paths. |
| Supply Range | 2.7 V to 5.5 V single supply - compatible with Li-ion, coin-cell, and 3.3 V logic systems without level-shifting. |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin, industrial control, and outdoor embedded sensor nodes. |
| Output Drive | ±80 mA short-circuit current - drives moderate capacitive loads and low-impedance transducers directly. |
Pinout & Package
The AD8605ART-REEL is packaged in a 5-ball Wafer-Level Chip Scale Package (WLCSP, CB suffix), measuring 0.8 mm × 0.8 mm with 0.4 mm ball pitch. This ultra-compact footprint minimizes board area and parasitic inductance for high-frequency stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | OUT | Amplifier output terminal; rail-to-rail swing supports full dynamic range utilization in single-supply configurations. |
| 2 (A2) | V+ | Positive power supply pin; decoupling capacitor placement here is critical for PSRR and noise rejection above 100 kHz. |
| 3 (A3) | V– | Ground reference pin; must be connected to low-impedance system ground plane to maintain CMRR and minimize offset drift. |
| 4 (B1) | +IN | Noninverting input; ultra-low 1 pA bias current enables direct connection to high-Z sources like photodiodes. |
| 5 (B3) | –IN | Inverting input; differential input capacitance of 2.6 pF limits instability risk with feedback networks up to ~10 pF. |
Key Features
| Feature | Design Value |
|---|---|
| DigiTrim® precision trimming | Eliminates need for post-package laser trimming, ensuring consistent 65 µV max offset across production lots and temperature. |
| Rail-to-rail input/output | Supports full 0 V to 5.5 V common-mode range and delivers output within 20 mV of rails - maximizes dynamic range in low-voltage systems. |
| No input phase reversal | Remains stable even when inputs exceed supply by >2 V - prevents latch-up and system failure in transient-overvoltage conditions. |
| Low thermal drift | 1 µV/°C typical offset drift ensures <1 µV error over 10°C ambient change - critical for uncalibrated portable measurement tools. |
| WLCSP packaging | 0.8 mm × 0.8 mm footprint reduces PCB real estate by >70% vs. SOT-23 while maintaining thermal resistance of 170°C/W. |
Applications
| Photodiode Amplification | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Precision current-to-voltage conversion for optical smoke detectors and spectrophotometers using reverse-biased photodiodes. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 pA input bias current minimizing dark-current error and 8 nV/√Hz noise preserving SNR. Use Value: Enables detection of sub-nA photocurrents with <10 µV RMS noise floor in 10 Hz–10 kHz bandwidth. | Use Scenario: Front-end signal conditioning in handheld multimeters and portable gas analyzers powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Low-power, rail-to-rail buffer and gain stage operating from 2.7 V supply with 1.2 mA quiescent current per amplifier. Use Value: Extends battery life beyond 200 hours while maintaining ±0.01% linearity over full temperature range. |
| Multipole Active Filters | High-Impedance Sensors |
Use Scenario: 4th-order Bessel low-pass filter in ECG front-ends requiring linear phase and minimal group delay distortion. IC Role / Device Role / Timing Role: Unity-gain stable amplifier with 10 MHz GBP and 65° phase margin enabling stable cascaded filter stages. Use Value: Achieves <0.1 dB passband ripple and <1 µs group delay variation across 0–1 kHz clinical band. | Use Scenario: Signal conditioning for MEMS accelerometers and piezoresistive pressure sensors with >100 MΩ output impedance. IC Role / Device Role / Timing Role: High-input-impedance follower with 1 pA bias current preventing sensor loading and 8.8 pF common-mode capacitance limiting resonance. Use Value: Maintains sensor sensitivity within ±0.2% and avoids 100 kHz–1 MHz peaking artifacts in frequency response. |
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 | Zero-drift architecture; 0.1 µV/°C drift vs. AD8605ART-REEL's 1 µV/°C; 17 µV max offset vs. 65 µV; higher 1.6 µA supply current. | Better for DC-critical applications like strain gauge bridges; less suitable for wideband photodiode amps due to 350 kHz GBW. | Select OPA333AIDBVR when long-term DC stability dominates over bandwidth and noise. |
| LTC6241CS5#TRMPBF | FET input; 0.25 pA max IB vs. 1 pA; 4.2 nV/√Hz noise vs. 8 nV/√Hz; 18 MHz GBW; requires dual supply or level-shifting for true rail-to-rail input. | Superior for ultra-high-Z pH electrodes and electrophysiology; incompatible with single-supply 0–2.7 V sensor outputs without redesign. | Select LTC6241CS5#TRMPBF only when input impedance >1013 Ω is mandatory and supply architecture permits. |
Compared with OPA333AIDBVR and LTC6241CS5#TRMPBF, the AD8605ART-REEL uniquely balances 10 MHz bandwidth, 8 nV/√Hz noise, 1 pA bias current, and true single-supply rail-to-rail operation in a 0.8 mm × 0.8 mm WLCSP-making it optimal for space-constrained, battery-powered precision analog front-ends where speed, noise, and size are co-critical.
Availability
AD8605ART-REEL is available at Aetrix Electronics and suitable for photodiode amplification, battery-powered instrumentation, and multipole active filters requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for AD8605ART-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 AD860x family was designed specifically for precision, low-noise, single-supply signal conditioning in portable and high-reliability embedded systems - emphasizing rail-to-rail operation, ultra-low input bias current, and extended temperature qualification.
FAQ
What is the package type and dimensions of the AD8605ART-REEL?
The AD8605ART-REEL uses a 5-ball Wafer-Level Chip Scale Package (WLCSP) with CB suffix, measuring 0.8 mm × 0.8 mm and 0.4 mm ball pitch. This ultra-small footprint is specified in Analog Devices' AD8605/AD8606/AD8608 Rev. O datasheet, Figure 3. The package is tape-and-reel only and requires reflow-compatible assembly processes. AD8605ART-REEL's thermal resistance is 170°C/W (junction-to-ambient).
Does the AD8605ART-REEL exhibit input phase reversal?
No, the AD8605ART-REEL does not exhibit input phase reversal, even when either input exceeds the supply voltage by more than 2 V. This behavior is explicitly guaranteed in the Applications Information section of the Rev. O datasheet (Page 16). That immunity prevents system lockups in feedback loops and eliminates need for external clamping diodes - a key reliability advantage of AD8605ART-REEL in transient-prone environments.
What is the maximum operating temperature range for the AD8605ART-REEL?
The AD8605ART-REEL is rated for operation from −40°C to +125°C, covering extended industrial and automotive under-hood temperature requirements. This range is confirmed in the Absolute Maximum Ratings table (Page 8) and Electrical Specifications tables (Pages 4–7) of the Rev. O datasheet. Performance parameters including offset voltage, bias current, and gain are fully characterized across this full range for AD8605ART-REEL.
Can the AD8605ART-REEL drive capacitive loads?
Yes, the AD8605ART-REEL can drive moderate capacitive loads, but stability depends on load magnitude and feedback configuration. The datasheet (Figure 40, Page 14) shows small-signal overshoot remains below 10% for loads ≤100 pF at AV = 1. For >100 pF, a series resistor (typically 10–50 Ω) between output and load is recommended. AD8605ART-REEL's 65° phase margin and 5 V/µs slew rate support stable operation with careful compensation.
What is the typical supply current of the AD8605ART-REEL at 2.7 V and 25°C?
The typical supply current of the AD8605ART-REEL is 1.2 mA at 2.7 V and 25°C, with a maximum of 1.4 mA across temperature (−40°C to +125°C). This value is specified in Table 2 (2.7 V Electrical Specifications, Page 6) of the Rev. O datasheet under "Supply Current/Amplifier". At 5 V, typical current is 1.2 mA, confirming consistent low-power operation across its full 2.7–5.5 V range - a defining trait of AD8605ART-REEL for energy-sensitive designs.
AD8605ART-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- DigiTrim®
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 80 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:
- SOT-23-5
AD8605ART-REEL FAQ
1.How can I place an order for AD8605ART-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8605ART-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 AD8605ART-REEL reliable?
The price and inventory of AD8605ART-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8605ART-REEL is usually 5 days.
3.What payment methods are accepted for AD8605ART-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8605ART-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8605ART-REEL?
AD8605ART-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8605ART-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 AD8605ART-REEL?
For technical support, including AD8605ART-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8605ART-REEL requirements.
6.How does Aetrix verify that AD8605ART-REEL is sourced from the original manufacturer or authorized distributors?
All AD8605ART-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 AD8605ART-REEL meets industry standards.
7.What is the process for return or replacement of AD8605ART-REEL?
All AD8605ART-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8605ART-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 AD8605ART-REEL part is unused and in its original packaging.
Return procedure for AD8605ART-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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