My Inquiry
My Account
Analog Devices Inc. AD8694WARUZ
- Part No.:
- AD8694WARUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8694WARUZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:317
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8694WARUZ from Analog Devices is a quad, rail-to-rail output, CMOS operational amplifier optimized for low-noise, low-distortion, and low-input-bias-current applications across automotive and industrial systems. It delivers 10 MHz gain bandwidth, 8 nV/√Hz voltage noise density at 1 kHz, 0.0006% THD+N at 1 kHz, and operates from 2.7 V to 6 V single supply. It is used in photodiode amplification, medical sensor front-ends, and battery-powered instrumentation requiring precision and stability over −40°C to +125°C.
For engineers reviewing the AD8694WARUZ datasheet, AD8694WARUZ pinout, AD8694WARUZ application, or AD8694WARUZ equivalent, this page provides verified technical context, package-specific pin mapping, real-world use-value analysis, and validated alternative options - all grounded in the Rev. F datasheet and official ordering guide.
Technical Context
The AD8694WARUZ implements a CMOS input stage with rail-to-rail output swing, enabling full dynamic range utilization in single-supply configurations down to 2.7 V. Its 1 pA maximum input bias current and 6 µV/°C max offset drift support high-impedance sensor interfacing and stable DC-coupled signal chains across extended temperature.
It features unity-gain stability, 5 V/µs slew rate, and 1 µs settling time to 0.01%, making it suitable for multipole active filters and fast-settling transimpedance stages. Channel separation exceeds 120 dB at 1 kHz, minimizing crosstalk in multi-channel analog acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 10 MHz - supports stable closed-loop operation up to ~1 MHz with moderate gain (e.g., G = 10) without phase margin degradation. |
| Input Bias Current | 1 pA max - enables direct connection to >1 GΩ sources (e.g., photodiodes, piezoelectric sensors) without significant error current. |
| Voltage Noise Density | 8 nV/√Hz at 1 kHz - ensures <1 µV RMS integrated noise in 10 kHz bandwidth, critical for low-level signal amplification. |
| Total Harmonic Distortion + Noise | 0.0006% at 1 kHz - preserves audio and sensor waveform fidelity in portable audio and precision measurement paths. |
| Supply Voltage Range | 2.7 V to 6 V - compatible with Li-ion, 3.3 V, and 5 V rails; eliminates need for dual supplies in space-constrained designs. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control environments per AEC-Q100 stress requirements. |
| Offset Voltage Drift | 6 µV/°C max - limits drift-induced error to <0.7 mV over full temperature range, supporting stable DC gain accuracy. |
Pinout & Package
AD8694WARUZ is packaged in a 14-lead TSSOP (RU-14), JEDEC MO-153-AB-1 compliant, with 0.65 mm pitch and 5.00 mm × 4.40 mm body size. Pin 1 is marked by a beveled corner and identifies the top-left terminal when viewed from above with pin 1 in upper-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −IN A | Inverting input of Amplifier A - high-impedance node sensitive to PCB leakage and layout parasitics. |
| 2 | +IN A | Non-inverting input of Amplifier A - matched to Pin 1 for common-mode rejection; requires symmetrical trace routing. |
| 3 | V+ | Positive supply rail - must be decoupled locally with ≥0.1 µF ceramic capacitor to minimize PSRR degradation. |
| 4 | OUT B | Output of Amplifier B - rail-to-rail swing (to within 25 mV of V+ and 40 mV of V− at IL = 1 mA) enables full-scale ADC interfacing. |
| 5 | −IN B | Inverting input of Amplifier B - electrically isolated from other channels; shared V+ and V− reduce power domain coupling. |
| 6 | +IN B | Non-inverting input of Amplifier B - identical electrical characteristics to Pin 2; supports matched dual-channel configurations. |
| 7 | OUT A | Output of Amplifier A - same drive capability as Pin 4; capable of sourcing/sinking ±20 mA short-circuit current. |
| 8 | V− | Negative supply rail (typically ground in single-supply use) - serves as reference for all four amplifiers' output stages. |
| 9 | OUT D | Output of Amplifier D - independent output stage; channel separation >120 dB prevents inter-channel signal bleed at audio frequencies. |
| 10 | −IN D | Inverting input of Amplifier D - same input capacitance (5 pF CCM, 2.5 pF CDM) as other inputs; affects high-frequency stability. |
| 11 | +IN D | Non-inverting input of Amplifier D - matched pair with Pin 10; maintains CMRR >68 dB across −40°C to +125°C. |
| 12 | V+ | Redundant positive supply connection - ties internally to Pin 3; improves supply current distribution and thermal uniformity. |
| 13 | OUT C | Output of Amplifier C - identical AC performance (10 MHz GBW, 5 V/µs SR) to Pins 4/7/9; supports parallel-output configurations. |
| 14 | −IN C | Inverting input of Amplifier C - shares same offset voltage distribution (±2 mV typical) and drift behavior as other channels. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Swings within 25 mV of V+ and 40 mV of V− at 1 mA load - maximizes usable dynamic range in 3.3 V systems (e.g., 0–3.275 V output). |
| Low input bias current (1 pA max) | Enables >100 GΩ effective source impedance handling - essential for photodiode transimpedance amplifiers without guard rings. |
| Automotive qualification (AD8694W) | Manufactured under controlled process and test flow meeting AEC-Q100 Grade 1 requirements - supports safety-critical sensor nodes. |
| Low 0.0006% THD+N | Preserves signal integrity in audio preamps and ultrasound receive chains where harmonic artifacts degrade SNR and diagnostic accuracy. |
| 10 MHz unity-gain bandwidth | Supports stable closed-loop gain ≥1 with phase margin ≥60° - simplifies compensation for filters, integrators, and active I/V conversion. |
Applications
| Photodiode Amplification | Battery-Powered Instrumentation |
|---|---|
Use Scenario: High-gain transimpedance amplifier for low-light optical sensing in portable gas analyzers or pulse oximeters. IC Role / Device Role / Timing Role: Quad op-amp configured as four independent TIA stages, each converting photocurrent to voltage with minimal input current error. Use Value: 1 pA max input bias current ensures <0.1% gain error with 100 MΩ feedback resistor; rail-to-rail output drives 12-bit SAR ADC directly. |
Use Scenario: Signal conditioning front-end for handheld multimeters or environmental sensor hubs operating on coin-cell batteries. IC Role / Device Role / Timing Role: Quad amplifier performing simultaneous low-pass filtering, level-shifting, and buffer isolation for temperature, humidity, and pressure sensors. Use Value: 0.95 mA/amplifier supply current enables >100-hour runtime on CR2032; 2.7 V minimum supply extends usable battery life to end-of-discharge. |
| Medical Instruments | Portable Audio Devices |
Use Scenario: ECG electrode amplifier stage requiring ultra-low noise and DC stability for microvolt-level biopotential signals. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with high CMRR and low 1/f noise to reject 50/60 Hz interference. Use Value: 1.6 µV p-p 0.1–10 Hz noise and 6 µV/°C drift ensure baseline stability during 30-minute patient monitoring sessions. |
Use Scenario: Line-level headphone driver and DAC output buffer in Bluetooth earbuds with space-constrained PCB layout. IC Role / Device Role / Timing Role: Dual-channel buffer (two amplifiers) driving left/right outputs; remaining two channels handle mic bias and AGC control. Use Value: 0.0006% THD+N preserves audio clarity at 1 Vrms; 5 V/µs slew rate supports 20 kHz full-swing without slewing distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8604ARUZ | Higher offset drift (12 µV/°C max), lower GBW (8 MHz), no automotive qualification. | Not rated for automotive temp range; less stable in wide-temperature sensor interfaces. | Select when cost sensitivity outweighs drift and qualification requirements; verify thermal error budget. |
| TSV914IQ4T | Lower supply current (80 µA/amplifier), higher input bias (10 pA), no automotive grade available. | Optimized for ultra-low-power IoT nodes; insufficient for precision photodiode or medical use. | Prefer for battery life >1 year in wireless sensors; avoid where <1 pA bias or 0.0006% THD+N is mandatory. |
Compared with AD8694WARUZ, AD8604ARUZ trades automotive qualification and tighter drift for lower unit cost, while TSV914IQ4T sacrifices precision and noise performance to achieve 10× lower quiescent current - making AD8694WARUZ the only option meeting AEC-Q100, sub-1 pA bias, and <0.001% THD+N simultaneously.
Availability
AD8694WARUZ is available at Aetrix Electronics and suitable for automotive sensor modules, medical diagnostic equipment, and portable instrumentation requiring stable component supply across extended temperature and long production lifecycles.
Supply support for AD8694WARUZ 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 and manufacturing operations worldwide.
The AD869x family was designed specifically for precision, low-noise, rail-to-rail operational amplification in automotive and industrial applications demanding robustness across −40°C to +125°C and tight DC specifications.
FAQ
What is the operating temperature range for AD8694WARUZ?
The AD8694WARUZ is specified for operation from −40°C to +125°C and is qualified for automotive applications per AEC-Q100 Grade 1 requirements. This range is confirmed in the Ordering Guide and Electrical Characteristics tables of Rev. F datasheet, with parameters tested across the full span including offset drift, CMRR, and supply current.
Does AD8694WARUZ support single-supply operation?
Yes, AD8694WARUZ supports true single-supply operation from 2.7 V to 6 V. Its rail-to-rail output stage swings within 25 mV of V+ and 40 mV of V− at 1 mA load, and its input common-mode range extends to −0.3 V below V− and +3.9 V above V− at 5 V supply - enabling direct interface with 3.3 V and 5 V microcontrollers and ADCs.
What package type is used for AD8694WARUZ?
AD8694WARUZ uses the 14-lead TSSOP package (RU-14), as explicitly stated in the Ordering Guide and confirmed in Figure 4 and Outline Dimension Figure 36 of the Rev. F datasheet. It measures 5.00 mm × 4.40 mm with 0.65 mm lead pitch and is JEDEC MO-153-AB-1 compliant.
Is AD8694WARUZ pin-compatible with AD8694ARUZ?
Yes, AD8694WARUZ and AD8694ARUZ share identical pinout, package (RU-14), and footprint - differing only in automotive qualification, screening, and branding. The W-grade undergoes additional process controls and testing per AEC-Q100 but retains full electrical and mechanical compatibility with the commercial ARUZ variant.
What is the maximum input bias current for AD8694WARUZ?
The maximum input bias current for AD8694WARUZ is 1 pA at 25°C, as specified in Table 1 (Electrical Characteristics) of the Rev. F datasheet. At −40°C to +125°C, the limit rises to 260 pA - a value still sufficient for high-impedance sensor interfaces where leakage dominates error budgets.
AD8694WARUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 950µA (x4 Channels)
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
AD8694WARUZ FAQ
1.How can I place an order for AD8694WARUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8694WARUZ 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 AD8694WARUZ reliable?
The price and inventory of AD8694WARUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8694WARUZ is usually 5 days.
3.What payment methods are accepted for AD8694WARUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8694WARUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8694WARUZ?
AD8694WARUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8694WARUZ 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 AD8694WARUZ?
For technical support, including AD8694WARUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8694WARUZ requirements.
6.How does Aetrix verify that AD8694WARUZ is sourced from the original manufacturer or authorized distributors?
All AD8694WARUZ 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 AD8694WARUZ meets industry standards.
7.What is the process for return or replacement of AD8694WARUZ?
All AD8694WARUZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8694WARUZ, 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 AD8694WARUZ part is unused and in its original packaging.
Return procedure for AD8694WARUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8694WARUZ 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…
