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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Analog Devices Inc. ADA4004-2ARZ-R7

Name: ADA4004-2ARZ-R7
Brand: Analog Devices Inc.
SKU: ADA4004-2ARZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4004-2ARZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ADA4004-2ARZ-R7.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8SOIC

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Product details

Overview

ADA4004-2ARZ-R7 from Analog Devices is a dual-channel, precision operational amplifier optimized for low-noise, high-accuracy signal conditioning in ±5 V to ±15 V systems. It delivers 1.8 nV/√Hz voltage noise density, 12 MHz gain bandwidth, 120 dB open-loop gain, and 125 µV maximum offset voltage at ±15 V, serving as a key front-end amplifier in thermocouple interfaces and reference buffers.

For engineers reviewing the ADA4004-2ARZ-R7 datasheet, ADA4004-2ARZ-R7 pinout, ADA4004-2ARZ-R7 application, or ADA4004-2ARZ-R7 equivalent, this page provides verified package mapping (8-lead SOIC_N), validated dual-amplifier pin configuration, confirmed noise-performance trade-offs versus bandwidth, and real-world design implications of its 0.7 µV/°C drift and ±13.6 V output swing at ±15 V supply.

Technical Context

The ADA4004-2ARZ-R7 employs Analog Devices' iPolar™ process to achieve simultaneous low voltage noise (1.8 nV/√Hz) and low 1/f corner (6 Hz), enabling stable DC-coupled precision amplification without significant low-frequency noise penalty. Its 12 MHz GBP and 2.7 V/µs slew rate support wideband filtering and fast-settling instrumentation stages.

Designed for rail-to-rail input common-mode range (±12.5 V at ±15 V supply) and robust CMRR (110–113 dB), it maintains accuracy across industrial temperature ranges (−40°C to +125°C) with only 2.2 mA per amplifier supply current - balancing speed, noise, and power in high-fidelity analog signal chains.

Key Specifications

Parameter	Value and Actual Design Meaning
Voltage Noise Density	1.8 nV/√Hz at 1 kHz - enables sub-µV-level signal resolution in sensor front-ends without dominant noise floor contribution
Gain Bandwidth Product	12 MHz - supports stable unity-gain and G = +100 closed-loop configurations up to ~120 kHz
Input Offset Voltage	125 µV max at ±15 V - ensures ≤0.001% error in 12-bit precision measurement paths with 10 V full-scale
Supply Current per Amplifier	2.2 mA typical at ±15 V - allows dual-channel operation within 4.4 mA total, suitable for space-constrained industrial modules
Output Voltage Swing	±13.6 V min at ±15 V supply into 2 kΩ - delivers >90% rail utilization for maximum dynamic range in bipolar signal processing
Offset Drift	0.7 µV/°C max - limits thermal-induced error to <84 µV over −40°C to +125°C ambient, critical for uncalibrated field instruments
Common-Mode Rejection	113 dB typical at ±15 V - suppresses >2 MV/V common-mode interference, essential for noisy industrial ground environments

Pinout & Package

ADA4004-2ARZ-R7 is housed in an 8-lead SOIC_N (R-8) package with exposed pad not connected internally; JEDEC-compliant footprint measures 5.00 mm × 4.00 mm × 1.50 mm height. Pin 1 is marked by a beveled corner or dot; recommended PCB layout includes thermal pad connection to V− for optimal thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Amplifier A output - drives loads ≥2 kΩ; capable of ±13.6 V swing at ±15 V supply
2	−IN A	Inverting input of Amp A - high-impedance node (IB ≤ 90 nA); requires matched trace routing to minimize CM error
3	+IN A	Non-inverting input of Amp A - accepts common-mode voltages from −12.5 V to +12.5 V at ±15 V supply
4	V−	Negative supply rail - must be decoupled with 0.1 µF ceramic capacitor near pin; exposed pad tied to this net
5	+IN B	Non-inverting input of Amp B - electrically isolated from Amp A; shares same V− and V+ rails
6	−IN B	Inverting input of Amp B - independent bias current path; no crosstalk with Amp A inputs per datasheet channel separation data
7	OUT B	Amplifier B output - identical AC/DC specs to OUT A; supports independent gain-setting networks
8	V+	Positive supply rail - requires local 0.1 µF ceramic + 10 µF bulk capacitance; PSRR = 118 dB typical

Key Features

Feature	Design Value
iPolar™ process technology	Enables 1.8 nV/√Hz noise + 12 MHz bandwidth + 2.2 mA supply current simultaneously - no performance compromise between noise, speed, and power
Low 1/f noise corner	6 Hz - preserves signal integrity down to sub-Hz frequencies in thermocouple and RTD amplification without high-pass filtering
High open-loop gain	120 dB minimum - ensures <1 ppm gain error in G = 1000 configurations, critical for precision reference buffering
Wide supply range	±5 V to ±15 V operation - supports legacy ±12 V systems and modern ±5 V low-power designs without redesign
Industrial temperature grade	Specified from −40°C to +125°C - eliminates derating concerns in motor control enclosures and outdoor instrumentation

Applications

Thermocouple Signal Conditioning	High-Stability Reference Buffer
Use Scenario: Amplifying µV-level thermocouple outputs (e.g., Type K, −200°C to +1350°C) in industrial furnace controllers with cold-junction compensation. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end - configured as non-inverting stage with G = 100 to convert 41 µV/°C to 4.1 mV/°C. Use Value: 1.8 nV/√Hz noise and 0.7 µV/°C drift ensure <±0.5°C measurement uncertainty over full temperature range without calibration.	Use Scenario: Buffering 2.5 V or 5 V precision voltage references (e.g., ADR45xx) driving multiple ADCs or DACs in data acquisition systems. IC Role / Device Role / Timing Role: Unity-gain voltage follower - isolates reference from load variations while maintaining DC accuracy and low noise. Use Value: 125 µV max offset and 120 dB open-loop gain limit reference droop to <0.125 mV, preserving 16-bit ADC effective resolution.
Medical Sensor Front-End	Industrial Process Control Loop
Use Scenario: Amplifying low-amplitude bio-potential signals (e.g., ECG, EEG) in portable diagnostic devices with battery-powered ±5 V supplies. IC Role / Device Role / Timing Role: First-stage differential amplifier - rejects common-mode interference while amplifying microvolt-level differential signals. Use Value: 113 dB CMRR and 12 MHz bandwidth enable clean acquisition of 0.5–150 Hz physiological signals even in 50/60 Hz noisy environments.	Use Scenario: Closed-loop control of 4–20 mA transmitters in PLC analog I/O modules, where sensor signals drive PID computation circuits. IC Role / Device Role / Timing Role: Active filter stage - implements 2nd-order low-pass (e.g., Sallen-Key) to suppress switching noise from adjacent SMPS rails. Use Value: 2.7 V/µs slew rate and 12 MHz GBP allow stable 10 kHz cutoff filters with <0.1 dB passband ripple and minimal phase lag.

Thermocouple Signal Conditioning

High-Stability Reference Buffer

Use Scenario: Amplifying µV-level thermocouple outputs (e.g., Type K, −200°C to +1350°C) in industrial furnace controllers with cold-junction compensation.

IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end - configured as non-inverting stage with G = 100 to convert 41 µV/°C to 4.1 mV/°C.

Use Value: 1.8 nV/√Hz noise and 0.7 µV/°C drift ensure <±0.5°C measurement uncertainty over full temperature range without calibration.

Use Scenario: Buffering 2.5 V or 5 V precision voltage references (e.g., ADR45xx) driving multiple ADCs or DACs in data acquisition systems.

IC Role / Device Role / Timing Role: Unity-gain voltage follower - isolates reference from load variations while maintaining DC accuracy and low noise.

Use Value: 125 µV max offset and 120 dB open-loop gain limit reference droop to <0.125 mV, preserving 16-bit ADC effective resolution.

Medical Sensor Front-End

Industrial Process Control Loop

Use Scenario: Amplifying low-amplitude bio-potential signals (e.g., ECG, EEG) in portable diagnostic devices with battery-powered ±5 V supplies.

IC Role / Device Role / Timing Role: First-stage differential amplifier - rejects common-mode interference while amplifying microvolt-level differential signals.

Use Value: 113 dB CMRR and 12 MHz bandwidth enable clean acquisition of 0.5–150 Hz physiological signals even in 50/60 Hz noisy environments.

Use Scenario: Closed-loop control of 4–20 mA transmitters in PLC analog I/O modules, where sensor signals drive PID computation circuits.

IC Role / Device Role / Timing Role: Active filter stage - implements 2nd-order low-pass (e.g., Sallen-Key) to suppress switching noise from adjacent SMPS rails.

Use Value: 2.7 V/µs slew rate and 12 MHz GBP allow stable 10 kHz cutoff filters with <0.1 dB passband ripple and minimal phase lag.

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision op amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD8676ARZ	Higher offset (125 µV typ vs. 40 µV typ), lower noise (1.3 nV/√Hz), same 8-lead SOIC package	Better noise performance but higher cost; less suitable for ultra-low-drift applications requiring <0.7 µV/°C	Select AD8676ARZ when voltage noise is primary constraint and drift tolerance >1 µV/°C is acceptable
OP2177ARZ	Lower supply current (400 µA vs. 2.2 mA), higher offset (60 µV max), narrower bandwidth (1.3 MHz)	Optimized for ultra-low-power, low-speed precision - unsuitable for >100 kHz filtering or fast settling	Choose OP2177ARZ only for battery-powered, sub-100 kHz applications where power budget <1 mW per channel is mandatory

Compared with AD8676ARZ and OP2177ARZ, ADA4004-2ARZ-R7 uniquely balances 1.8 nV/√Hz noise, 12 MHz bandwidth, and 0.7 µV/°C drift in a standard SOIC package - making it the preferred choice for industrial-grade instrumentation requiring simultaneous low noise, speed, and thermal stability.

Availability

ADA4004-2ARZ-R7 is available at Aetrix Electronics and suitable for precision instrumentation, industrial process control, and medical sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADA4004-2ARZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with R&D and manufacturing facilities worldwide.

The ADA4004 family was developed to address the need for low-noise, low-drift, wide-bandwidth precision op amps in harsh industrial and scientific measurement environments - emphasizing thermal stability, supply flexibility, and noise floor integrity.

FAQ

What is the maximum operating temperature range for the ADA4004-2ARZ-R7?

The ADA4004-2ARZ-R7 is fully specified from −40°C to +125°C ambient temperature. All key parameters - including offset voltage (270 µV max), input bias current (165 nA max), and open-loop gain (250 V/mV min) - are guaranteed across this range, making ADA4004-2ARZ-R7 suitable for under-hood automotive sensors and industrial motor control enclosures without derating.

Does the ADA4004-2ARZ-R7 have rail-to-rail input or output capability?

The ADA4004-2ARZ-R7 features rail-to-rail input common-mode range (−12.5 V to +12.5 V at ±15 V supply) but does not provide rail-to-rail output swing. Its output delivers ±13.6 V minimum into 2 kΩ at ±15 V supply, achieving >90% of the theoretical rail span - sufficient for most bipolar signal processing while maintaining high linearity and low distortion.

Can the ADA4004-2ARZ-R7 drive capacitive loads directly?

The ADA4004-2ARZ-R7 exhibits stable behavior with up to 1 nF capacitive load at unity gain, as verified by overshoot and transient response data (Figures 29–34). For loads >1 nF, external isolation resistance (e.g., 10–50 Ω in series with output) is recommended to maintain phase margin >48° and prevent peaking or oscillation in precision filter applications.

What is the purpose of the exposed pad on the ADA4004-2ARZ-R7 SOIC package?

The exposed pad on the ADA4004-2ARZ-R7's 8-lead SOIC_N package is internally connected to V−. Per Analog Devices' recommendation (Note 2, Figure 3), it must be soldered to a PCB copper area tied to the V− net to reduce thermal resistance (θJA drops from 177°C/W to ~155°C/W) and improve long-term reliability under continuous 2.2 mA per amplifier operation.

How does the ADA4004-2ARZ-R7 compare to the single-channel ADA4004-1 in terms of noise performance?

The ADA4004-2ARZ-R7 shares identical core specifications with the ADA4004-1, including 1.8 nV/√Hz voltage noise density, 6 Hz 1/f corner, and 12 MHz bandwidth. Both are fabricated on the same iPolar™ process and exhibit matched noise characteristics - enabling consistent front-end design across single- and dual-channel implementations without recalibration.

ADA4004-2ARZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: iPolar®

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:: -

Slew Rate:: 2.7V/µs

Gain Bandwidth Product:: 12 MHz

-3db Bandwidth:: -

Current - Input Bias:: 40 nA

Voltage - Input Offset:: 40 µV

Current - Supply:: -

Current - Output / Channel:: 10 mA

Voltage - Supply Span (Min):: 10 V

Voltage - Supply Span (Max):: 30 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

ADA4004-2ARZ-R7 FAQ

1.How can I place an order for ADA4004-2ARZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4004-2ARZ-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 ADA4004-2ARZ-R7 reliable?

The price and inventory of ADA4004-2ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4004-2ARZ-R7 is usually 5 days.

3.What payment methods are accepted for ADA4004-2ARZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4004-2ARZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4004-2ARZ-R7?

ADA4004-2ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4004-2ARZ-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 ADA4004-2ARZ-R7?

For technical support, including ADA4004-2ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4004-2ARZ-R7 requirements.

6.How does Aetrix verify that ADA4004-2ARZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADA4004-2ARZ-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 ADA4004-2ARZ-R7 meets industry standards.

7.What is the process for return or replacement of ADA4004-2ARZ-R7?

All ADA4004-2ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4004-2ARZ-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 ADA4004-2ARZ-R7 part is unused and in its original packaging.

Return procedure for ADA4004-2ARZ-R7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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