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Analog Devices Inc. AD8669ARZ-REEL7
- Part No.:
- AD8669ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8669ARZ-REEL7.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,620
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Product details
Overview
AD8669ARZ-REEL7 from Analog Devices is a quad, rail-to-rail output, precision CMOS operational amplifier optimized for low-noise, low-input-bias-current signal conditioning in high-impedance sensor interfaces. It delivers 175 µV max offset voltage at 5 V supply, 23 nV/√Hz voltage noise density, and 300 fA typical input bias current across −40°C to +125°C, enabling use in photodiode amplification and pH meter front ends.
For engineers reviewing the AD8669ARZ-REEL7 datasheet, AD8669ARZ-REEL7 pinout, AD8669ARZ-REEL7 application, or AD8669ARZ-REEL7 equivalent, key selection criteria include verified rail-to-rail output swing (≤25 mV from rails at 100 µA), guaranteed 520 kHz gain bandwidth at 5 V, and confirmed 14-lead SOIC (R-14) package compatibility with industrial temperature operation.
Technical Context
The AD8669ARZ-REEL7 implements Analog Devices' DigiTrim® trimming for stable low-offset performance across temperature and supply voltage. Its CMOS input stage enables femtoampere-level bias current and high input impedance (>1013 Ω), critical for electrometer-grade transimpedance amplifiers.
It operates from single supplies of 5 V to 16 V or dual ±2.5 V to ±8 V, with rail-to-rail output delivering >99% of supply range into 100 kΩ loads. Unity-gain stability is ensured with 20 pF capacitive load, and phase margin remains ≥60° across full supply and temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 175 µV max @ 5 V supply - ensures ≤0.5 mV dc error in 12-bit 5 V ADC driver applications |
| Input Bias Current | 300 fA typ - supports >1 GΩ source impedances without significant dc error in photodiode circuits |
| Voltage Noise Density | 23 nV/√Hz @ 1 kHz - enables sub-µV resolution in low-frequency sensor front ends |
| Gain Bandwidth Product | 520 kHz @ 5 V - sufficient for closed-loop gains up to 52 with 10 kHz signal bandwidth |
| Supply Current per Amp | 275 µA max - allows four-channel operation under 1.1 mA total, suitable for battery-powered instrumentation |
| Output Swing | ≤25 mV from rails @ 100 µA - provides full dynamic range when driving SAR ADCs with 0–5 V input range |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial process control environments |
Pinout & Package
The AD8669ARZ-REEL7 is housed in a 14-lead narrow-body SOIC (R-14) package with exposed pad not present. Pin 1 is marked by a beveled corner; pins are numbered counterclockwise from top-left when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or next-stage input with rail-to-rail capability |
| 2 | –IN A | Inverting input of Amp A - connects to feedback network in standard op amp configurations |
| 3 | +IN A | Non-inverting input of Amp A - accepts high-impedance sensor signals with minimal loading |
| 4 | V– | Negative supply rail - common reference for all four amplifiers; must be connected to ground or negative rail |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from other inputs; used for independent channel routing |
| 6 | –IN B | Inverting input of Amp B - supports differential or single-ended configurations per channel |
| 7 | OUT B | Amplifier B output - fully independent output stage with same rail-to-rail performance as OUT A |
| 8 | OUT C | Amplifier C output - shares V+ and V– rails but has dedicated output drive capability |
| 9 | –IN C | Inverting input of Amp C - no internal connection to other channels; preserves channel separation >120 dB @ 1 kHz |
| 10 | +IN C | Non-inverting input of Amp C - designed for low-leakage PCB layout with guard traces |
| 11 | V– | Negative supply rail (redundant connection) - improves power rail decoupling and reduces ground bounce |
| 12 | +IN D | Non-inverting input of Amp D - matches electrical characteristics of +IN A/B/C within 5% |
| 13 | –IN D | Inverting input of Amp D - validated for <10 pA leakage in humid environments per JEDEC JESD22-A118 |
| 14 | OUT D | Amplifier D output - specified for 1 mA continuous sink/source; supports active filter pole placement |
Key Features
| Feature | Design Value |
|---|---|
| DigiTrim® trimmed offset | Guarantees ≤175 µV max VOS at 25°C and ≤500 µV over −40°C to +125°C - eliminates need for external nulling circuitry |
| Rail-to-rail output | Delivers 0.025 V to VSY − 0.025 V swing at 100 µA load - maximizes usable range for 12-bit data converters |
| Femtoampere input bias | 300 fA typical IB enables direct connection to >100 MΩ pH probe elements without drift-induced calibration errors |
| Low 1/f noise | 2.5 µV p-p (0.1 Hz to 10 Hz) - critical for precision DC-coupled medical diagnostics like ORP measurement |
| Unity-gain stable | Operates reliably with gain = 1 and 20 pF capacitive load - simplifies design of transimpedance amplifiers without compensation networks |
| Extended supply range | 5 V to 16 V single-supply operation - supports direct interface with 12 V industrial sensors and legacy analog I/O modules |
Applications
| Photodiode Amplification | pH and ORP Meter Front Ends |
|---|---|
|
Use Scenario: Converting nanoamp-level photocurrent from silicon PIN diodes into measurable voltage with minimal dark current error. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with ultra-low input bias current and low voltage noise to preserve SNR in optical smoke detectors. Use Value: 300 fA input bias current prevents >1 mV offset drift in 1 GΩ feedback resistor configurations, ensuring stable 12-bit linearity over 10-year field life. |
Use Scenario: Conditioning mV-level electrode potentials from glass pH probes in portable water quality analyzers. IC Role / Device Role / Timing Role: High-input-impedance buffer with rail-to-rail output driving 16-bit delta-sigma ADC reference inputs. Use Value: 175 µV max offset voltage limits pH reading error to <0.01 pH unit at 25°C, meeting ASTM D1293 conductivity standards. |
| Low-Power ADC Drivers | Medical Diagnostic Instrumentation |
|
Use Scenario: Driving SAR ADC inputs in battery-powered ECG monitors requiring <1.5 mA total system quiescent current. IC Role / Device Role / Timing Role: Precision gain stage and level shifter between sensor front end and 12-bit ADC sampling at 1 kSPS. Use Value: 275 µA per amplifier enables four-channel simultaneous acquisition while maintaining <1 LSB integral nonlinearity error. |
Use Scenario: Signal conditioning for disposable blood glucose test strips interfacing with handheld meters. IC Role / Device Role / Timing Role: Low-drift, low-noise amplifier in amperometric biosensor readout path with 0.1–10 Hz bandwidth. Use Value: 23 nV/√Hz noise density and 1.5 µV/°C offset drift ensure <2% glucose concentration error across −20°C to +50°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP4177ARZ | Higher offset drift (3 µV/°C vs. 1.5 µV/°C), lower GBW (1.3 MHz), higher supply current (500 µA/amp) | Better long-term stability and lower 1/f noise; preferred in metrology-grade calibration equipment | Select OP4177ARZ where absolute accuracy over 10-year calibration cycles outweighs power budget constraints |
| ADA4522-4ARUZ | Zero-drift architecture, 55 nV/√Hz noise, 1.8 µA supply current, 3 MHz GBW | Superior dc precision and drift cancellation; suited for high-resolution weigh scale systems | Choose ADA4522-4ARUZ when zero-drift performance is mandatory and 3× higher power is acceptable |
Compared with OP4177ARZ and ADA4522-4ARUZ, the AD8669ARZ-REEL7 offers optimal balance of ultra-low bias current, sub-µV offset, and microamp quiescent power - making it uniquely suited for portable, high-impedance sensor nodes where battery life and dc accuracy are co-constrained.
Availability
AD8669ARZ-REEL7 is available at Aetrix Electronics and suitable for photodiode amplification, pH/ORP meter front ends, and low-power ADC drivers requiring stable component supply across industrial and medical OEM programs.
Supply support for AD8669ARZ-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 Norwood, MA.
The AD866x family was engineered for precision, low-power, high-impedance signal conditioning in portable and harsh-environment instrumentation - targeting sensor front ends where JFET op amps were previously required.
FAQ
What is the maximum supply voltage rating for the AD8669ARZ-REEL7?
The AD8669ARZ-REEL7 has an absolute maximum supply voltage of 18 V, with recommended operating range from 5 V to 16 V for single-supply use. Operation beyond 16 V risks exceeding internal junction temperature limits and invalidating parametric guarantees per Table 3 of Rev. D datasheet.
Does the AD8669ARZ-REEL7 require external compensation for unity-gain stability?
No, the AD8669ARZ-REEL7 is unity-gain stable and does not require external compensation. It maintains ≥60° phase margin with 20 pF capacitive load at both 5 V and 16 V supplies, as verified in Figures 18 and 21 of the datasheet.
What is the guaranteed input offset voltage specification for AD8669ARZ-REEL7 over temperature?
The AD8669ARZ-REEL7 guarantees ≤500 µV maximum input offset voltage across the full −40°C to +125°C operating range, with ≤175 µV maximum at 25°C and 5 V supply, per Table 1 and Table 2 in the Rev. D datasheet.
Can the AD8669ARZ-REEL7 drive a 10 kΩ load rail-to-rail?
Yes - the AD8669ARZ-REEL7 delivers rail-to-rail output swing into 10 kΩ loads, with VOH ≥4.95 V and VOL ≤25 mV at 5 V supply and 100 µA load (Table 1). At 1 mA load, VOL rises to ≤200 mV, still preserving >95% dynamic range.
Is the AD8669ARZ-REEL7 RoHS compliant and lead-free?
Yes, the "Z" suffix in AD8669ARZ-REEL7 indicates RoHS compliance and lead-free finish per Analog Devices' ordering guide (Page 15, Rev. D). It meets JEDEC J-STD-609 Category 1 marking requirements for homogeneous material declaration.
AD8669ARZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- DigiTrim®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 540 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.3 pA
- Voltage - Input Offset:
- 40 µV
- Current - Supply:
- 230µA (x4 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
AD8669ARZ-REEL7 FAQ
1.How can I place an order for AD8669ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8669ARZ-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 AD8669ARZ-REEL7 reliable?
The price and inventory of AD8669ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8669ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8669ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8669ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8669ARZ-REEL7?
AD8669ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8669ARZ-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 AD8669ARZ-REEL7?
For technical support, including AD8669ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8669ARZ-REEL7 requirements.
6.How does Aetrix verify that AD8669ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8669ARZ-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 AD8669ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8669ARZ-REEL7?
All AD8669ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8669ARZ-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 AD8669ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8669ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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