My Inquiry
My Account
Analog Devices Inc. ADA4665-2ARZ-R7
- Part No.:
- ADA4665-2ARZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4665-2ARZ-R7.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,982
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADA4665-2ARZ-R7 from Analog Devices is a dual, rail-to-rail input/output CMOS operational amplifier optimized for low-power, high-voltage precision applications. It delivers 1.2 MHz gain bandwidth, 1 V/μs slew rate, and 290 μA per amplifier supply current at 16 V, enabling use in portable medical sensors and high-density power-constrained instrumentation.
For engineers reviewing the ADA4665-2ARZ-R7 datasheet, ADA4665-2ARZ-R7 pinout, ADA4665-2ARZ-R7 application, or ADA4665-2ARZ-R7 equivalent, key selection criteria include its 1 pA max input bias current, ±2.5 V to ±8 V dual-supply capability, rail-to-rail swing down to 4 mV from rails at 10 kΩ load, and guaranteed operation from −40°C to +125°C in SOIC_N packaging.
Technical Context
The ADA4665-2ARZ-R7 employs a complementary input stage (nMOS/pMOS differential pairs) to achieve true rail-to-rail input operation across 0 V to 16 V, with transition-induced offset shift occurring ~1 V below VSY. Its unity-gain stable architecture supports active filter designs requiring ≥100× fc·Q bandwidth margin.
It features low 3 μV/°C offset drift and 32 nV/√Hz voltage noise density at 1 kHz, making it suitable for transimpedance amplifiers and physiological signal conditioning where DC accuracy and low-frequency noise dominate performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1.2 MHz - supports stable closed-loop gain up to 100 at 12 kHz for precision filtering. |
| Slew Rate | 1 V/μs - enables accurate reproduction of 100 kHz full-scale sine waves without distortion. |
| Input Bias Current | 1 pA max - minimizes voltage error in high-impedance sensor interfaces (e.g., pH electrodes, photodiode TIA). |
| Supply Voltage Range | 5 V to 16 V single or ±2.5 V to ±8 V dual - accommodates industrial 12 V and automotive 16 V systems without level-shifting. |
| Output Swing | Within 4 mV of rails (VOL = 4 mV, VOH = 15.96 V @ 16 V, RL = 10 kΩ) - maximizes dynamic range in single-supply data acquisition. |
| Offset Voltage Drift | 3 μV/°C - contributes ≤0.36 mV total drift over −40°C to +125°C, critical for uncalibrated medical front-ends. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
ADA4665-2ARZ-R7 is packaged in an 8-lead SOIC_N (R-8) with standard JEDEC MS-012-AA footprint, 158°C/W θJA, and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives loads up to 10 kΩ while maintaining rail-to-rail swing; requires no external compensation for unity-gain stability. |
| 2 (–IN A) | Inverting input A | High-impedance node (4 GΩ) with 1 pA max bias current; sensitive to PCB leakage in high-Z circuits. |
| 3 (+IN A) | Non-inverting input A | Matches –IN A characteristics; common-mode range extends 0.3 V beyond rails per Absolute Maximum Ratings. |
| 4 (V–) | Negative supply | Connects to ground (single-supply) or negative rail (dual-supply); must be decoupled with 0.1 μF ceramic capacitor. |
| 5 (+IN B) | Non-inverting input B | Electrically isolated from Channel A; enables independent dual-channel signal conditioning on one die. |
| 6 (–IN B) | Inverting input B | Same electrical specs as Pin 2; layout symmetry recommended to minimize crosstalk in matched filter designs. |
| 7 (OUT B) | Amplifier B output | Independent output with identical AC/DC specs to Pin 1; channel separation >80 dB at 1 kHz ensures minimal inter-channel interference. |
| 8 (V+) | Positive supply | Accepts 5–16 V; PSRR of 95 dB suppresses supply ripple in battery-powered systems with noisy DC-DC converters. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input/output swing | Enables full-scale signal utilization in 5 V and 16 V single-supply systems without level-shifting circuitry. |
| 1 pA maximum input bias current | Reduces input offset error in high-impedance transducer interfaces (e.g., piezoelectric sensors, ion-selective electrodes). |
| 3 μV/°C offset voltage drift | Minimizes calibration frequency in portable diagnostic equipment operating across wide ambient temperatures. |
| 290 μA per amplifier supply current | Supports battery life extension in handheld ECG monitors and glucose meters with multi-day runtime requirements. |
| 1.2 MHz bandwidth with unity-gain stability | Permits direct implementation of 2-pole Sallen-Key filters (e.g., 10 kHz low-pass) without external compensation. |
Applications
| Portable Medical Sensors | Current Shunt Monitoring |
|---|---|
Use Scenario: Amplifying microvolt-level bioelectric signals (e.g., ECG, EMG) from dry electrodes in battery-powered wearables. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage with rail-to-rail input to capture full electrode potential swing. Use Value: 1 pA input bias current prevents signal loss across high-impedance skin-electrode interface; 3 μV/°C drift maintains baseline stability during body-temperature variations. | Use Scenario: Measuring motor phase current in 12 V BLDC drives using 0.1 Ω shunt resistors. IC Role / Device Role / Timing Role: Dual-channel difference amplifier for simultaneous high-side and low-side current sensing. Use Value: Rail-to-rail output swing delivers 0–15.96 V output at 16 V supply, enabling 1.6 A full-scale measurement with 10× gain and no headroom loss. |
| Precision Reference Buffers | Multipole Active Filters |
Use Scenario: Isolating and driving 2.5 V bandgap references to multiple ADC inputs in industrial PLC analog I/O modules. IC Role / Device Role / Timing Role: Low-drift, low-noise unity-gain buffer with high PSRR to reject supply noise coupling into reference paths. Use Value: 95 dB PSRR and 32 nV/√Hz noise density preserve reference integrity; 1.2 MHz GBW ensures fast settling after reference turn-on transients. | Use Scenario: Implementing 4th-order Butterworth anti-aliasing filters in 100 kSPS data loggers. IC Role / Device Role / Timing Role: Dual op-amp core for cascaded 2-pole Sallen-Key stages (low-pass and high-pass). Use Value: Unity-gain stability and 1.2 MHz GBW support 10 kHz cutoff with <0.1% passband ripple; matched channels reduce group delay mismatch between filter sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8667ARZ | Higher 1.5 mA supply current; 2.5 MHz GBW; 10 pA IB max | Better for higher-speed filtering but unsuitable for sub-1 mA portable systems | Select AD8667ARZ only when bandwidth >1.2 MHz is required and power budget allows ≥5× higher quiescent current. |
| ADA4091-2ARMZ | Lower 125 μA supply current; 0.8 MHz GBW; 0.5 pA IB max | Optimized for ultra-low-power sensor nodes but sacrifices slew rate (0.4 V/μs) and output drive | Choose ADA4091-2ARMZ when battery life is paramount and signal bandwidth is <100 kHz. |
Compared with AD8667ARZ and ADA4091-2ARMZ, ADA4665-2ARZ-R7 uniquely balances 1.2 MHz bandwidth, 290 μA supply current, and 1 pA input bias-making it the optimal choice for 10–100 kHz precision sensing in 12–16 V industrial and portable medical systems where both speed and power efficiency are constrained.
Availability
ADA4665-2ARZ-R7 is available at Aetrix Electronics and suitable for portable medical devices, industrial current monitoring systems, and precision reference buffering requiring stable component supply across extended temperature ranges.
Supply support for ADA4665-2ARZ-R7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADA4665-2 product line targets low-power, high-voltage precision signal conditioning-specifically engineered for rail-to-rail operation in battery-powered and wide-supply industrial instrumentation.
FAQ
What is the maximum supply voltage for ADA4665-2ARZ-R7?
The ADA4665-2ARZ-R7 has an absolute maximum supply voltage rating of 16.5 V. Its specified operating range is 5 V to 16 V for single-supply use or ±2.5 V to ±8 V for dual-supply configurations. Operation at 16 V is fully characterized in the datasheet, with parameters including 1.2 MHz GBW, 1 V/μs slew rate, and 290 μA per amplifier supply current confirmed at this voltage. Exceeding 16.5 V risks permanent damage.
Does ADA4665-2ARZ-R7 support true rail-to-rail input at 5 V supply?
Yes, ADA4665-2ARZ-R7 supports rail-to-rail input operation from 0 V to 5 V when powered from a 5 V single supply. The input common-mode voltage range is specified as 0 V to 5 V over the full −40°C to +125°C temperature range. This is enabled by its dual-input-stage architecture (nMOS and pMOS differential pairs), which seamlessly transitions between input pairs as the common-mode voltage sweeps across the rail span.
What package type is used for ADA4665-2ARZ-R7?
ADA4665-2ARZ-R7 uses the 8-lead SOIC_N (narrow-body) package, designated R-8 per Analog Devices' ordering guide. Its JEDEC MS-012-AA compliant footprint measures 5.00 mm × 3.99 mm with 1.27 mm lead pitch. Thermal resistance is 158°C/W (θJA) on a standard 4-layer board. This package is distinct from the MSOP variant (ADA4665-2ARMZ), which uses RM-8.
Can ADA4665-2ARZ-R7 drive 10 kΩ loads while maintaining rail-to-rail output swing?
Yes, ADA4665-2ARZ-R7 guarantees rail-to-rail output swing into 10 kΩ loads. At 16 V supply, VOH is 15.90 V min and VOL is 150 mV max over temperature, meaning it swings within 100 mV of each rail. At 5 V supply, VOL is 100 mV max and VOH is 4.90 V min - confirming usable swing margins for precision 12-bit+ ADC interfacing without external level-shifting circuitry.
Is ADA4665-2ARZ-R7 unity-gain stable?
Yes, ADA4665-2ARZ-R7 is explicitly specified as unity-gain stable in the datasheet General Description and verified in Electrical Characteristics tables. Its phase margin is 50° at unity gain with 10 kΩ load and 50 pF capacitance, ensuring stable operation in buffer, follower, and active filter configurations without requiring external compensation networks.
ADA4665-2ARZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 290µA (x2 Channels)
- Current - Output / Channel:
- 30 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:
- 8-SOIC
ADA4665-2ARZ-R7 FAQ
1.How can I place an order for ADA4665-2ARZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4665-2ARZ-R7 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 ADA4665-2ARZ-R7 reliable?
The price and inventory of ADA4665-2ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4665-2ARZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4665-2ARZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4665-2ARZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4665-2ARZ-R7?
ADA4665-2ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4665-2ARZ-R7 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 ADA4665-2ARZ-R7?
For technical support, including ADA4665-2ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4665-2ARZ-R7 requirements.
6.How does Aetrix verify that ADA4665-2ARZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4665-2ARZ-R7 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 ADA4665-2ARZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4665-2ARZ-R7?
All ADA4665-2ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4665-2ARZ-R7, 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 ADA4665-2ARZ-R7 part is unused and in its original packaging.
Return procedure for ADA4665-2ARZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADA4665-2ARZ-R7 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
