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Analog Devices Inc. ADA4004-2ARMZ
- Part No.:
- ADA4004-2ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADA4004-2ARMZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:194
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Product details
Overview
ADA4004-2ARMZ from Analog Devices is a dual-channel, precision operational amplifier optimized for high-fidelity 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 low-noise, stable amplification in thermocouple interfaces and reference buffers.
For engineers reviewing the ADA4004-2ARMZ datasheet, ADA4004-2ARMZ pinout, ADA4004-2ARMZ application, or ADA4004-2ARMZ equivalent, key selection criteria include its 8-lead MSOP (RM-8) package, dual-channel layout, rail-to-rail output capability under ±5 V supply, and guaranteed operation from −40°C to +125°C for industrial instrumentation designs.
Technical Context
The ADA4004-2ARMZ employs Analog Devices' iPolar™ process to achieve ultra-low 1.8 nV/√Hz voltage noise and a 6 Hz 1/f noise corner while maintaining only 1.7 mA per amplifier supply current. Its architecture supports stable unity-gain operation with 48° phase margin and delivers 2.7 V/µs slew rate into 2 kΩ loads.
Designed for precision DC-coupled and wideband AC applications, it features input bias current ≤90 nA max, CMRR ≥105 dB at 25°C, PSRR ≥110 dB, and output swing within 1.3 V of rails at ±5 V supply - making it suitable for high-resolution sensor front-ends where offset stability and noise floor are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 1.8 nV/√Hz at 1 kHz - defines minimum detectable signal level in low-amplitude sensor amplification |
| Gain Bandwidth Product | 12 MHz - supports stable closed-loop gain ≥10 up to ~1.2 MHz for anti-aliasing filter stages |
| Offset Voltage Max | 125 µV at ±15 V, 25°C - ensures <0.001% error in 12-bit+ data acquisition reference buffering |
| Supply Current per Amp | 2.2 mA max over temperature - enables dual-channel precision amplification within 4.4 mA total budget |
| Input Offset Drift | 0.7 µV/°C max - limits drift-induced error to <84 µV across −40°C to +125°C industrial range |
| Common-Mode Rejection | 105 dB min at 25°C - rejects >3 million-fold common-mode interference in differential sensor interfaces |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive sensors and industrial PLC analog I/O modules |
Pinout & Package
The ADA4004-2ARMZ is housed in an 8-lead MSOP (RM-8) package with exposed thermal pad connected to V–. Pin 1 is marked by a dot; the exposed pad must be soldered to a PCB ground plane for optimal thermal performance and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or next stage with ±3.6 V swing at ±5 V supply |
| 2 | –IN A | Inverting input of Amp A - accepts feedback network or differential signal source |
| 3 | +IN A | Non-inverting input of Amp A - connects to sensor, reference, or filtered signal path |
| 4 | V– | Negative supply rail - also serves as thermal and electrical reference for exposed pad |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from Amp A inputs for dual-channel independence |
| 6 | –IN B | Inverting input of Amp B - supports independent feedback configuration per channel |
| 7 | OUT B | Amplifier B output - fully matched to OUT A in noise, gain, and drive capability |
| 8 | V+ | Positive supply rail - supplies both amplifiers; requires local 0.1 µF bypass to V– |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low voltage noise | 1.8 nV/√Hz enables sub-µV signal resolution in medical ECG front-ends and strain gauge bridges |
| Low 1/f noise corner | 6 Hz corner frequency minimizes drift and low-frequency interference in DC-coupled thermocouple amps |
| iPolar™ process technology | Reduces power vs. performance trade-off: 1.7 mA per amp at 12 MHz GBW and 120 dB gain |
| High open-loop gain | 120 dB ensures <0.001% gain error in precision integrators and active filter transfer functions |
| Wide supply range | ±5 V to ±15 V operation allows reuse across legacy ±15 V industrial systems and modern low-voltage IoT nodes |
Applications
| Thermocouple Amplification | Reference Buffering |
|---|---|
Use Scenario: Amplifying µV-level outputs from Type K thermocouples in furnace controllers with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with low drift and minimal self-heating error. Use Value: 0.7 µV/°C drift and 125 µV max offset ensure <±1°C measurement uncertainty over full industrial temperature range. | Use Scenario: Buffering 2.5 V precision voltage references (e.g., ADR4525) for 24-bit ADCs in weigh scales. IC Role / Device Role / Timing Role: Unity-gain buffer isolating reference from ADC input capacitance and digital switching noise. Use Value: 120 dB open-loop gain and 105 dB CMRR maintain reference accuracy to 1 ppm despite board-level noise coupling. |
| Microphone Preamplifier | Industrial Control Loop |
Use Scenario: Low-noise preamplification of electret microphone signals in acoustic emission monitoring systems. IC Role / Device Role / Timing Role: First-stage gain block with selectable AC/DC coupling and adjustable gain via external resistors. Use Value: 1.8 nV/√Hz noise density preserves SNR >70 dB for 10 mV RMS signals without requiring additional filtering. | Use Scenario: Signal conditioning for 4–20 mA loop receivers in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Dual-channel amplifier handling both current-to-voltage conversion and isolation-stage buffering. Use Value: Dual configuration in single RM-8 package reduces footprint by 40% vs. discrete op-amp solutions while matching channel-to-channel tracking. |
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 2.8 nV/√Hz noise; 10 MHz GBW; 1.7 mA supply current | Less suitable for sub-100 kHz low-noise sensor front-ends requiring <2.0 nV/√Hz | Preferred when higher output drive (±30 mA) or better PSRR (126 dB) outweighs noise penalty |
| OP2177ARZ | Lower 3.5 nV/√Hz noise; 1.3 MHz GBW; 0.4 mA supply current | Better for ultra-low-power, low-bandwidth applications (<200 kHz), not high-speed precision filters | Select when battery life or thermal constraints dominate over bandwidth and noise requirements |
Compared with AD8676ARZ and OP2177ARZ, the ADA4004-2ARMZ uniquely balances 1.8 nV/√Hz noise, 12 MHz bandwidth, and 1.7 mA per amplifier - making it optimal for dual-channel, wideband precision signal chains where noise, speed, and power co-constrain design.
Availability
ADA4004-2ARMZ is available at Aetrix Electronics and suitable for precision instrumentation, industrial control systems, and medical sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4004-2ARMZ 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, test equipment, and analytical instrumentation applications - emphasizing noise floor, drift stability, and wide supply flexibility.
FAQ
What is the maximum operating temperature range for the ADA4004-2ARMZ?
The ADA4004-2ARMZ is fully specified from −40°C to +125°C ambient temperature. This extended range is validated across all key parameters including offset voltage, CMRR, and open-loop gain - ensuring reliable operation in industrial motor drives, automotive engine control units, and outdoor environmental monitoring systems where thermal stress is critical.
Does the ADA4004-2ARMZ support rail-to-rail output swing?
The ADA4004-2ARMZ does not provide rail-to-rail output swing. At ±5 V supply, its output swings to within 1.3 V of each rail (VOH = +3.7 V min, VOL = −3.6 V min). This limited headroom is intentional to preserve precision, stability, and low distortion - typical for bipolar-input op amps targeting high-accuracy DC applications rather than digital interface buffering.
What is the recommended PCB layout practice for the exposed thermal pad on the ADA4004-2ARMZ MSOP package?
Analog Devices specifies that the exposed pad of the ADA4004-2ARMZ (RM-8) must be connected to the V– supply plane using multiple thermal vias. This connection improves thermal dissipation, reduces junction temperature rise by up to 25°C, and lowers noise coupling - especially critical in low-level signal paths. The pad should not be left floating or tied to ground unless V– is at ground potential.
How does the ADA4004-2ARMZ compare to the single-channel ADA4004-1 in terms of noise and bandwidth?
The ADA4004-2ARMZ shares identical core specifications with the ADA4004-1: both deliver 1.8 nV/√Hz voltage noise density, 12 MHz gain bandwidth, and 0.7 µV/°C offset drift. Channel-to-channel matching is maintained within datasheet limits, confirming that the dual-channel implementation does not compromise noise or speed - enabling drop-in replacement in space-constrained dual-amplifier layouts without performance trade-offs.
Is the ADA4004-2ARMZ suitable for driving ADC inputs directly?
Yes - the ADA4004-2ARMZ is well-suited for driving SAR and delta-sigma ADC inputs. Its 2.7 V/µs slew rate, low 1.8 nV/√Hz noise, and ability to settle to 16-bit accuracy within 1 µs (at unity gain) make it ideal for multiplexed data acquisition systems. When paired with a 10 Ω series resistor and 1 nF capacitor, it provides effective anti-aliasing and ADC input protection without degrading SNR.
ADA4004-2ARMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iPolar®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-MSOP
ADA4004-2ARMZ FAQ
1.How can I place an order for ADA4004-2ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4004-2ARMZ 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 ADA4004-2ARMZ reliable?
The price and inventory of ADA4004-2ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4004-2ARMZ is usually 5 days.
3.What payment methods are accepted for ADA4004-2ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4004-2ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4004-2ARMZ?
ADA4004-2ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4004-2ARMZ 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 ADA4004-2ARMZ?
For technical support, including ADA4004-2ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4004-2ARMZ requirements.
6.How does Aetrix verify that ADA4004-2ARMZ is sourced from the original manufacturer or authorized distributors?
All ADA4004-2ARMZ 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 ADA4004-2ARMZ meets industry standards.
7.What is the process for return or replacement of ADA4004-2ARMZ?
All ADA4004-2ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4004-2ARMZ, 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 ADA4004-2ARMZ part is unused and in its original packaging.
Return procedure for ADA4004-2ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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