My Inquiry
My Account
Analog Devices Inc. AD8667ARZ-REEL
- Part No.:
- AD8667ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8667ARZ-REEL.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,010
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8667ARZ-REEL from Analog Devices is a dual, 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, 23 nV/√Hz voltage noise density, and 300 fA typical input bias current at 5 V supply, operating from 5 V to 16 V single supply - enabling use in photodiode amplification, pH/ORP meter front ends, and low-power ADC driver stages.
For engineers reviewing the AD8667ARZ-REEL datasheet, AD8667ARZ-REEL pinout, AD8667ARZ-REEL application, or AD8667ARZ-REEL equivalent, key selection criteria include verified rail-to-rail output swing (≤25 mV from rails at 100 µA), guaranteed −40°C to +125°C operation, DigiTrim®-enabled offset stability, and SOIC-8 package compatibility with standard PCB layouts for industrial instrumentation and portable diagnostics.
Technical Context
The AD8667ARZ-REEL implements a CMOS input stage with patented DigiTrim® trimming to achieve low offset drift (1.5–5 µV/°C) and ultra-low input bias current (0.3 pA typ). Its unity-gain stable architecture supports direct use in transimpedance configurations without external compensation.
Designed for single-supply operation from 5 V to 16 V (or ±2.5 V to ±8 V), it maintains rail-to-rail output swing across temperature and load - delivering 4.95 V high-level and 25 mV low-level output at 100 µA load under 5 V supply, with closed-loop output impedance of 120 Ω at 100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5 V to 16 V single supply - enables direct interface with 12 V industrial rails and battery-powered 5 V systems without level-shifting. |
| Input Offset Voltage | 30–175 µV max at 25°C - ensures ≤0.5 mV error in 10× gain pH probe buffers over full industrial temperature range. |
| Input Bias Current | 0.3 pA typical, 105 pA max at +125°C - preserves signal integrity in >1 GΩ photodiode and electrometer circuits. |
| Voltage Noise Density | 23 nV/√Hz at 1 kHz - supports sub-µV resolution in low-frequency sensor front ends without added filtering overhead. |
| Gain Bandwidth Product | 520–540 kHz - sufficient for stable DC-coupled gain stages and anti-aliasing filters up to ~50 kHz. |
| Output Swing (RL = 100 kΩ) | Within 25 mV of rails at 100 µA - maximizes dynamic range when driving 12-bit SAR ADCs with 0–5 V input range. |
| Quiescent Current | 210–275 µA per amplifier - allows dual-channel precision amplification in energy-constrained wireless sensor nodes. |
Pinout & Package
AD8667ARZ-REEL is housed in an 8-lead narrow SOIC (R-8) package with exposed pad not connected internally. Pin 1 is marked by a beveled corner; pins 1–4 occupy one side, pins 5–8 the opposite, with no internal connections on pins 1 and 5 (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected - must remain floating; no routing or grounding permitted. |
| 2 | Inverting Input (−IN A) | Differential input node for Amplifier A; accepts signals referenced to common-mode voltage range of 0.2 V to VSY−0.2 V. |
| 3 | Non-Inverting Input (+IN A) | Differential input node for Amplifier A; high-impedance CMOS input with <300 fA bias current. |
| 4 | Negative Supply (V−) | Ground or negative rail connection; exposed pad may be tied to V− for thermal enhancement. |
| 5 | No Connect (NC) | Internally unconnected - must remain floating; no routing or grounding permitted. |
| 6 | Output A (OUT A) | Rail-to-rail output capable of sourcing/sinking ≥1 mA while maintaining ≤100 mV saturation at 16 V supply. |
| 7 | Positive Supply (V+) | Primary power input; supports 5–16 V single supply or connects to +VS in dual-supply mode. |
| 8 | Output B (OUT B) | Second rail-to-rail output; fully independent channel with matched AC/DC specs to OUT A. |
Key Features
| Feature | Design Value |
|---|---|
| DigiTrim® offset calibration | Guarantees ≤175 µV max input offset at 25°C and ≤500 µV over −40°C to +125°C - eliminates need for external nulling in medical-grade pH meters. |
| Rail-to-rail output stage | Delivers 0.025 V headroom at 100 µA load on 5 V supply - enables full-scale utilization of 12-bit ADC reference ranges without gain compression. |
| Ultra-low input bias current | 0.3 pA typical at 25°C, <120 pA at +125°C - prevents leakage-induced errors in high-Z transducer interfaces like glass electrode pH probes. |
| Low 1/f noise profile | 2.5 µV p-p (0.1–10 Hz) - critical for stable DC baseline in electrophysiological signal acquisition and ORP monitoring. |
| Extended supply range | Operates from 5 V to 16 V single supply - supports direct integration into 12 V automotive body electronics and industrial 24 V systems via LDO. |
Applications
| Photodiode Amplification | Electrometer Applications |
|---|---|
|
Use Scenario: Converting weak photocurrents (pA–nA) from silicon PIN diodes into measurable voltage signals in spectrophotometers and smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with virtual ground input and precision feedback resistor. Use Value: 300 fA input bias current minimizes dark-current error; 23 nV/√Hz noise preserves SNR in low-light conditions without cooling. |
Use Scenario: Measuring ultra-low leakage currents (<1 pA) across insulating materials or biological membranes in lab-grade electrometers. IC Role / Device Role / Timing Role: Guarded I-V converter with guarded input trace and low-leakage PCB layout. Use Value: Verified 0.3 pA typical input bias current and <65 pA max over temperature ensure measurement fidelity down to 0.1 pA resolution. |
| pH and ORP Meters | Low-Power ADC Drivers |
|
Use Scenario: Buffering high-impedance glass electrode outputs (≥100 MΩ) in handheld pH/ORP testers and inline process sensors. IC Role / Device Role / Timing Role: Unity-gain buffer isolating electrode from ADC input and minimizing loading-induced drift. Use Value: 175 µV max offset and 1.5 µV/°C drift maintain ±0.01 pH accuracy over −20°C to +70°C ambient without recalibration. |
Use Scenario: Driving SAR ADC inputs in battery-powered data loggers where power budget limits active component count. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail output driver ensuring full-scale ADC utilization with minimal settling time. Use Value: 275 µA max supply current per amplifier enables dual-channel buffering for 12-bit ADCs while consuming <0.6 mW at 5 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP2177ARZ-REEL | Higher precision (25 µV max offset), lower noise (7.9 nV/√Hz), but higher supply current (450 µA) and narrower supply range (±2.5 V to ±15 V). | Better suited for laboratory-grade instrumentation requiring sub-µV offset stability; less optimal for battery-powered designs. | Select OP2177ARZ-REEL when offset drift <0.6 µV/°C and noise <8 nV/√Hz are mandatory, and power budget allows >400 µA per channel. |
| LTC6078IMS8#TRPBF | Lower input bias current (1 fA typ), wider supply range (2.7 V to 44 V), but higher cost and 10x higher voltage noise (65 nV/√Hz). | Ideal for ultra-high-impedance (>10 GΩ) MEMS sensor interfaces where bias current dominates error, not voltage noise. | Choose LTC6078IMS8#TRPBF only when interfacing electrodes or nanomaterial sensors where femtoampere leakage is the primary constraint. |
Compared with OP2177ARZ-REEL and LTC6078IMS8#TRPBF, AD8667ARZ-REEL provides the optimal balance of low bias current (0.3 pA), low voltage noise (23 nV/√Hz), and ultra-low quiescent power (275 µA) in a cost-effective SOIC-8 package - making it the preferred choice for portable pH meters, IR thermopiles, and dual-channel sensor signal chains where size and power are constrained.
Availability
AD8667ARZ-REEL is available at Aetrix Electronics and suitable for industrial sensor front ends, portable medical diagnostics, and low-power data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8667ARZ-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, with design centers worldwide and ISO 9001-certified manufacturing.
The AD866x family was engineered specifically for precision, low-power, high-impedance signal conditioning - targeting applications where JFET op amps were previously required, but CMOS reliability, lower cost, and rail-to-rail output were needed.
FAQ
What is the maximum supply voltage rating for AD8667ARZ-REEL?
The AD8667ARZ-REEL has an absolute maximum supply voltage of 18 V, with recommended operating range from 5 V to 16 V single supply (or ±2.5 V to ±8 V dual supply). Operation beyond 16 V risks exceeding specified electrical characteristics and is not guaranteed across temperature.
Does AD8667ARZ-REEL support rail-to-rail input common-mode range?
No, AD8667ARZ-REEL features rail-to-rail *output* but not rail-to-rail *input*. Its input common-mode voltage range is specified from 0.2 V above V− to 0.2 V below V+, e.g., 0.2 V to 4.8 V on a 5 V supply - limiting use in true ground-sensing configurations without level shifting.
Is the exposed pad on AD8667ARZ-REEL electrically connected?
No - the exposed pad on the AD8667ARZ-REEL (SOIC-8 R-8 package) is not internally connected. Per Analog Devices' datasheet, it may be left unconnected or soldered to V− for improved thermal performance, but must never be tied to any other potential.
Can AD8667ARZ-REEL drive capacitive loads directly?
AD8667ARZ-REEL is unity-gain stable but exhibits increasing overshoot with capacitive loads >100 pF. For loads >200 pF, external isolation resistance (e.g., 10–50 Ω in series with output) is recommended to maintain phase margin >60° and prevent oscillation in ADC driver or filter applications.
What is the guaranteed input offset voltage drift over temperature for AD8667ARZ-REEL?
The AD8667ARZ-REEL guarantees input offset voltage drift of 1.5 µV/°C minimum to 5 µV/°C maximum across the full −40°C to +125°C operating range, as confirmed in Table 1 and Table 2 of the Rev. D datasheet - critical for maintaining accuracy in uncalibrated field-deployed sensors.
AD8667ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- DigiTrim®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 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:
- 8-SOIC
AD8667ARZ-REEL FAQ
1.How can I place an order for AD8667ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8667ARZ-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 AD8667ARZ-REEL reliable?
The price and inventory of AD8667ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8667ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8667ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8667ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8667ARZ-REEL?
AD8667ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8667ARZ-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 AD8667ARZ-REEL?
For technical support, including AD8667ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8667ARZ-REEL requirements.
6.How does Aetrix verify that AD8667ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8667ARZ-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 AD8667ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8667ARZ-REEL?
All AD8667ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8667ARZ-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 AD8667ARZ-REEL part is unused and in its original packaging.
Return procedure for AD8667ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8667ARZ-REEL 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…
