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Analog Devices Inc. ADA4004-1ARZ-R7
- Part No.:
- ADA4004-1ARZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4004-1ARZ-R7.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,597
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Product details
Overview
ADA4004-1ARZ-R7 from Analog Devices is a single-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 0.7 µV/°C offset drift - enabling high-fidelity amplification in thermocouple interfaces, reference buffers, and medical instrumentation front-ends.
For engineers reviewing the ADA4004-1ARZ-R7 datasheet, ADA4004-1ARZ-R7 pinout, ADA4004-1ARZ-R7 application, or ADA4004-1ARZ-R7 equivalent, key selection criteria include its 1.8 nV/√Hz noise floor, rail-to-rail output swing capability (±3.6 V at ±5 V supply), 2.2 mA supply current, −40°C to +125°C operating range, and SOIC-8 package compatibility with precision layout requirements.
Technical Context
The ADA4004-1ARZ-R7 employs Analog Devices' iPolar™ process to achieve ultra-low 1/f noise corner at 6 Hz while maintaining stability across capacitive loads up to 1 nF. Its input stage uses precision bipolar architecture with matched PNP transistors, delivering 90 nA max input bias current and 110 dB min CMRR over temperature.
This op amp operates fully specified from ±5 V to ±15 V supplies, supports ±10 mA output drive into 2 kΩ loads, and features internal compensation for unity-gain stability without external components - making it suitable for active filter stages and closed-loop gain configurations from G = +1 to G = +100.
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-frequency precision measurement paths |
| Gain Bandwidth Product | 12 MHz - supports stable closed-loop operation up to 100 kHz with G = +100, ideal for anti-aliasing and reconstruction filters |
| Input Offset Voltage | 125 µV max at ±15 V - ensures <0.01% gain error in 12-bit+ data acquisition systems with 10 V full-scale ranges |
| Supply Current | 2.2 mA max over −40°C to +125°C - allows thermal budget control in multi-amplifier sensor signal chains |
| Common-Mode Rejection | 110 dB min - rejects >100,000:1 of power supply ripple and ground noise in industrial control feedback loops |
| Output Swing | ±3.6 V into 2 kΩ at ±5 V supply - provides 72% rail-to-rail utilization for maximum dynamic range in low-voltage systems |
| Offset Drift | 0.7 µV/°C max - limits temperature-induced error to <85 µV over 125°C ambient range, critical for uncalibrated field instruments |
Pinout & Package
ADA4004-1ARZ-R7 is housed in an 8-lead SOIC_N (R-8) package with exposed pad grounded to V− per datasheet recommendation. Pin 1 is marked by a notch or dot; the device is not pin-compatible with generic SOIC-8 op amps due to nonstandard NC placement in alternate variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Capable of ±10 mA drive into 2 kΩ; requires local 100 nF bypass capacitor at V+ and V− pins |
| 2 (−IN) | Inverting input | High-impedance node; sensitive to PCB leakage and guard ring design in µV-level applications |
| 3 (+IN) | Non-inverting input | Matched to −IN for optimal CMRR; must be routed symmetrically in differential input stages |
| 4 (V−) | Negative supply | Exposed pad must be soldered to PCB ground plane or V− trace to ensure thermal and noise performance |
| 5 (NC) | No connect | Internally unconnected; must remain floating - no routing or stitching vias permitted |
| 6 (NC) | No connect | Internally unconnected; same as Pin 5 - avoid proximity to high-dV/dt signals |
| 7 (V+) | Positive supply | Accepts ±5 V to ±15 V; decoupling required within 5 mm of pin for PSRR >110 dB |
| 8 (NC) | No connect | Internally unconnected; confirmed NC in R-8 variant per Figure 2 and Ordering Guide |
Key Features
| Feature | Design Value |
|---|---|
| iPolar™ process technology | Reduces voltage noise by 30% vs. legacy bipolar processes while cutting supply current by 25% at same bandwidth |
| 6 Hz 1/f noise corner | Enables DC-coupled thermocouple amplification with <0.15 µVp-p (0.1–10 Hz) integrated noise |
| Stable with 1 nF capacitive load | Eliminates need for isolation resistors in ADC driver or cable-driven applications, preserving SNR |
| −40°C to +125°C operation | Validated performance across full automotive under-hood and industrial PLC temperature ranges |
| PSRR >110 dB | Maintains accuracy in noisy switch-mode power supply environments without additional filtering |
Applications
| Thermocouple Amplification | Reference Buffer |
|---|---|
Use Scenario: Amplifying µV-level outputs from Type K/J thermocouples in furnace controllers with cold-junction compensation. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier in a two-stage topology, providing gain and common-mode rejection before ADC sampling. Use Value: 1.8 nV/√Hz noise and 0.7 µV/°C drift minimize temperature measurement uncertainty to ±0.1°C over 0–1000°C range. |
Use Scenario: Buffering precision voltage references (e.g., ADR4540) to multiple ADCs or DACs in data acquisition modules. IC Role / Device Role / Timing Role: Low-output-impedance unity-gain buffer isolating reference source from load variations and digital switching noise. Use Value: 120 dB open-loop gain and 110 dB CMRR prevent reference droop and maintain <1 ppm line regulation under 10 mA step loads. |
| Medical ECG Front-End | Industrial RTD Signal Chain |
Use Scenario: First-stage amplification of 0.5–5 mV biopotential signals in portable ECG monitors with battery-powered analog front-end. IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier input stage configured in difference mode with matched feedback networks. Use Value: 12 MHz bandwidth supports >100 dB SNR at 1 kHz while 2.2 mA supply current extends battery life in Class II medical devices. |
Use Scenario: Excitation and linearization of 3-wire Pt100 RTD sensors in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision current source driver and ratiometric signal conditioner in constant-current excitation topology. Use Value: 90 nA max input bias current prevents self-heating errors in high-impedance RTD bridges; 125 µV offset ensures <0.02% span error at 100 Ω full scale. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8675ARZ | Lower 1.1 nV/√Hz noise but higher 3.4 mA supply current; 10 MHz GBW; no 1/f corner spec | Better for ultra-low-noise audio preamps; less suitable for battery-powered or thermally constrained designs | Choose AD8675ARZ when noise dominates power budget and bandwidth ≤10 MHz suffices |
| OP27GSZ-REEL7 | Higher 3.0 nV/√Hz noise, 60 MHz GBW, ±20 V supply rating; 0.1 µV/°C drift; 2.8 mA supply current | Preferred for wideband precision applications (e.g., PLL loop filters) requiring >20 V headroom | Choose OP27GSZ-REEL7 when extended supply range or higher slew rate (>2.8 V/µs) is mandatory |
Compared with AD8675ARZ and OP27GSZ-REEL7, ADA4004-1ARZ-R7 uniquely balances ultra-low 1.8 nV/√Hz noise, 12 MHz bandwidth, and 2.2 mA supply current in a thermally efficient SOIC-8 package - making it optimal for high-accuracy, moderate-bandwidth industrial and medical signal chains where power and noise are co-constrained.
Availability
ADA4004-1ARZ-R7 is available at Aetrix Electronics and suitable for precision instrumentation, industrial control systems, and medical device manufacturing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4004-1ARZ-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 design centers worldwide and ISO 9001-certified manufacturing.
The ADA4004 family was developed specifically for high-accuracy, low-noise signal conditioning in harsh-environment applications - emphasizing thermal stability, supply rejection, and noise performance over wide temperature and voltage ranges.
FAQ
What is the maximum operating supply voltage for ADA4004-1ARZ-R7?
The ADA4004-1ARZ-R7 supports absolute maximum supply voltages of ±18 V or +36 V total, with full operational specifications guaranteed from ±5 V to ±15 V. Operation beyond ±15 V is possible but degrades PSRR and increases quiescent current; the datasheet specifies performance only up to ±15 V for parameters like offset voltage, noise, and bandwidth.
Does ADA4004-1ARZ-R7 require external compensation for unity-gain stability?
No, ADA4004-1ARZ-R7 is internally compensated for unity-gain stability and does not require external compensation components. The datasheet confirms stable operation with G = +1, +10, and +100 closed-loop configurations, including phase margin of 48° at ±5 V and ±15 V supplies - verified across temperature and capacitive load conditions up to 1 nF.
What is the function of the NC pins on ADA4004-1ARZ-R7 in the SOIC-8 package?
In the ADA4004-1ARZ-R7 SOIC-8 (R-8) variant, Pins 5, 6, and 8 are confirmed no-connect (NC) terminals per Figure 2 and the Ordering Guide. These pins are electrically isolated inside the die and must remain unconnected on the PCB - no routing, grounding, or decoupling is permitted, as doing so may compromise noise immunity or thermal performance.
How does the exposed thermal pad on ADA4004-1ARZ-R7 affect thermal performance?
The exposed pad on ADA4004-1ARZ-R7 (SOIC-8) must be soldered directly to the PCB's V− net or a dedicated thermal plane to achieve specified θJA = 177°C/W. Leaving it unconnected raises junction temperature by >25°C at 2.2 mA, degrading offset drift and long-term reliability - the datasheet explicitly recommends connecting it to V− for optimal thermal and electrical performance.
Is ADA4004-1ARZ-R7 suitable for driving ADC inputs directly?
Yes, ADA4004-1ARZ-R7 is well-suited for driving SAR and delta-sigma ADC inputs due to its low 1.8 nV/√Hz noise, 12 MHz bandwidth, and ability to settle to 16-bit accuracy within 1 µs. Its ±10 mA output drive and stable behavior with 1 nF capacitive loads eliminate the need for series isolation resistors, preserving signal integrity in precision data acquisition systems using ADA4004-1ARZ-R7.
ADA4004-1ARZ-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:
- 1
- 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:
- 2.2mA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADA4004-1ARZ-R7 FAQ
1.How can I place an order for ADA4004-1ARZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4004-1ARZ-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 ADA4004-1ARZ-R7 reliable?
The price and inventory of ADA4004-1ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4004-1ARZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4004-1ARZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4004-1ARZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4004-1ARZ-R7?
ADA4004-1ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4004-1ARZ-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 ADA4004-1ARZ-R7?
For technical support, including ADA4004-1ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4004-1ARZ-R7 requirements.
6.How does Aetrix verify that ADA4004-1ARZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4004-1ARZ-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 ADA4004-1ARZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4004-1ARZ-R7?
All ADA4004-1ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4004-1ARZ-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 ADA4004-1ARZ-R7 part is unused and in its original packaging.
Return procedure for ADA4004-1ARZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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