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Analog Devices Inc. ADA4004-2ARZ
- Part No.:
- ADA4004-2ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4004-2ARZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,221
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Product details
Overview
ADA4004-2ARZ from Analog Devices is a dual-channel precision operational amplifier optimized for low-noise, high-gain 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 0.7 µV/°C offset drift - enabling high-fidelity amplification in thermocouple interfaces and reference buffers.
For engineers reviewing the ADA4004-2ARZ datasheet, ADA4004-2ARZ pinout, ADA4004-2ARZ application, or ADA4004-2ARZ equivalent, this page provides verified specifications, SOIC-8 package layout, real-world use cases in instrumentation and industrial control, and two validated alternative op-amps with documented functional trade-offs.
Technical Context
The ADA4004-2ARZ employs Analog Devices' iPolar™ process to achieve simultaneous low noise (1.8 nV/√Hz), low power (2.2 mA per amplifier), and wide bandwidth (12 MHz) without sacrificing DC precision. Its 6 Hz 1/f noise corner and 0.15 µV p-p (0.1–10 Hz) ensure stability in precision DC-coupled stages.
Designed for rail-to-rail input common-mode range (±12.5 V at ±15 V supply) and robust output drive (±10 mA), it supports unity-gain stable operation with 48° phase margin and maintains CMRR >100 dB across −40°C to +125°C - critical for ATE and medical sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 1.8 nV/√Hz at 1 kHz - enables sub-µV signal resolution in low-level sensor amplification |
| Gain Bandwidth Product | 12 MHz - supports stable closed-loop gain ≥100 up to 120 kHz |
| Input Offset Voltage | 125 µV max at ±15 V - ensures <0.01% error in 12-bit DAC buffer applications |
| Supply Current per Amp | 2.2 mA max over temperature - allows dual-channel precision in thermally constrained PCBs |
| Common-Mode Rejection | 100 dB min (−40°C to +125°C) - rejects power supply ripple and ground bounce in noisy industrial environments |
| Output Drive | ±10 mA into ±13.6 V swing - drives 2 kΩ loads while maintaining linearity in active filter stages |
| Offset Drift | 0.7 µV/°C typ - limits thermal-induced error to <85 µV over full industrial temperature range |
Pinout & Package
ADA4004-2ARZ is housed in an 8-lead SOIC_N (R-8) package with exposed pad not connected internally; datasheet recommends connecting exposed pad to V– for thermal performance. Pin 1 is marked by notch or bevel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of ±13.6 V swing into 2 kΩ load at ±15 V supply |
| 2 | –IN A | Inverting input of Amp A - high-impedance node (90 nA max bias current) |
| 3 | +IN A | Non-inverting input of Amp A - supports common-mode range from V– + 1.5 V to V+ – 1.5 V |
| 4 | V– | Negative supply rail - also connects to exposed thermal pad per datasheet recommendation |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from Amp A with >100 dB channel separation at 1 kHz |
| 6 | –IN B | Inverting input of Amp B - matched to Amp A for differential pair configurations |
| 7 | OUT B | Amplifier B output - identical AC/DC specs to OUT A; no crosstalk impact on settling time |
| 8 | V+ | Positive supply rail - accepts ±5 V to ±15 V dual supplies or +10 V to +30 V single supply |
Key Features
| Feature | Design Value |
|---|---|
| iPolar™ process technology | Enables 1.8 nV/√Hz noise + 12 MHz GBW + 2.2 mA supply current simultaneously - unattainable in standard bipolar or CMOS op-amps |
| Low 1/f noise corner | 6 Hz - preserves signal integrity in DC-coupled thermocouple and RTD amplifiers where 0.1–10 Hz band dominates error |
| High open-loop gain | 120 dB min - ensures <0.001% gain error in precision integrators and reference buffers |
| Wide supply range | ±5 V to ±15 V - supports legacy industrial rails and modern low-voltage systems without redesign |
| Robust ESD rating | Class 2 HBM (2 kV) - survives handling and board assembly without additional protection circuitry |
Applications
| Thermocouple Amplification | Reference Buffering |
|---|---|
Use Scenario: Amplifying µV-level thermocouple outputs (e.g., Type K, −200°C to +1350°C) with cold-junction compensation in industrial PLC modules. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with ultra-low noise and drift. Use Value: 1.8 nV/√Hz noise and 0.7 µV/°C drift limit total measurement uncertainty to <0.5°C over full temperature range. |
Use Scenario: Buffering 2.5 V precision voltage references (e.g., ADR4525) for 16-bit SAR ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Unity-gain stable, low-output-impedance buffer isolating reference from ADC input capacitance. Use Value: 120 dB open-loop gain and 12 MHz bandwidth maintain <0.001% gain error and settle within 1 µs to 16-bit accuracy. |
| Medical Sensor Front-End | Industrial Control Loop |
Use Scenario: Conditioning EEG/ECG electrode signals in portable patient monitors requiring battery efficiency and clinical-grade accuracy. IC Role / Device Role / Timing Role: Low-noise, low-power dual op-amp for differential amplification and high-pass filtering. Use Value: 2.2 mA per amplifier enables dual-channel analog front-end operation on 3.7 V Li-ion with >24-hour runtime. |
Use Scenario: Closed-loop current/voltage control in programmable power supplies and motor drivers using feedback from shunt resistors. IC Role / Device Role / Timing Role: High-precision error amplifier in PID compensation networks with wide dynamic range. Use Value: 100 dB CMRR and 110 dB PSRR suppress noise from switching regulators and prevent instability in high-gain loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8676ARMZ | Higher voltage noise (2.8 nV/√Hz), lower GBW (10 MHz), same SOIC-8 package | Less suitable for wideband sensor amplification but offers better DC precision (12 µV VOS max) | Select when ultra-low offset dominates over noise and bandwidth requirements |
| OP2177ARZ | Lower noise (2.1 nV/√Hz), narrower GBW (1.3 MHz), higher supply current (1.2 mA per amp) | Better for pure DC applications (e.g., strain gauge bridges); insufficient for >100 kHz filter stages | Choose for cost-sensitive, low-bandwidth industrial transmitters where 12 MHz is unnecessary |
Compared with AD8676ARMZ and OP2177ARZ, the ADA4004-2ARZ uniquely balances 1.8 nV/√Hz noise, 12 MHz bandwidth, and 2.2 mA supply current - making it optimal for high-resolution, wide-dynamic-range instrumentation where both AC fidelity and DC accuracy are required.
Availability
ADA4004-2ARZ is available at Aetrix Electronics and suitable for precision instrumentation, industrial control systems, and medical sensor front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4004-2ARZ 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 ADA4004 family was designed specifically for high-accuracy, low-noise signal conditioning in demanding industrial, medical, and test equipment - emphasizing noise-performance-per-milliwatt and robustness across −40°C to +125°C.
FAQ
What is the maximum supply voltage for ADA4004-2ARZ?
The ADA4004-2ARZ supports absolute maximum supply voltages of ±18 V or +36 V single supply. Continuous operation is specified from ±5 V to ±15 V across −40°C to +125°C. Exceeding ±18 V risks permanent damage per Absolute Maximum Ratings Table 4 in the Rev. H datasheet.
Does ADA4004-2ARZ have rail-to-rail input or output capability?
The ADA4004-2ARZ features rail-to-rail input common-mode range (V– + 1.5 V to V+ – 1.5 V at ±15 V supply), but its output swings to within 1.4 V of each rail (e.g., ±13.6 V at ±15 V). It is not a rail-to-rail output amplifier - full-scale output requires headroom for internal transistor saturation.
Is the exposed pad on ADA4004-2ARZ electrically connected?
No - the exposed pad on the ADA4004-2ARZ SOIC-8 package is not internally connected. However, Analog Devices' datasheet (Rev. H, Figure 3 note) explicitly recommends soldering it to the V– net for improved thermal performance and reduced junction temperature under continuous load.
What is the 1/f noise corner frequency of ADA4004-2ARZ?
The ADA4004-2ARZ has a 1/f noise corner frequency of 6 Hz, as confirmed in the General Description section of the Rev. H datasheet. This low corner enables exceptional low-frequency stability in DC-coupled applications such as thermocouple amplifiers and precision integrators.
Can ADA4004-2ARZ drive capacitive loads without oscillation?
Yes - the ADA4004-2ARZ remains stable with capacitive loads up to 1 nF in unity-gain configuration, as shown in Figures 29–30 of the Rev. H datasheet. For loads >1 nF, external isolation resistance (e.g., 10–50 Ω in series with output) is recommended to maintain phase margin above 48°.
ADA4004-2ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iPolar®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for ADA4004-2ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4004-2ARZ 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 reliable?
The price and inventory of ADA4004-2ARZ 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 is usually 5 days.
3.What payment methods are accepted for ADA4004-2ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4004-2ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4004-2ARZ?
ADA4004-2ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4004-2ARZ 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?
For technical support, including ADA4004-2ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4004-2ARZ requirements.
6.How does Aetrix verify that ADA4004-2ARZ is sourced from the original manufacturer or authorized distributors?
All ADA4004-2ARZ 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 meets industry standards.
7.What is the process for return or replacement of ADA4004-2ARZ?
All ADA4004-2ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4004-2ARZ, 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 part is unused and in its original packaging.
Return procedure for ADA4004-2ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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