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Analog Devices Inc. ADA4062-2ARMZ
- Part No.:
- ADA4062-2ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADA4062-2ARMZ.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,599
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Product details
Overview
ADA4062-2ARMZ from Analog Devices is a dual JFET-input operational amplifier optimized for low-power, high-precision signal conditioning in industrial and instrumentation systems. It delivers 50 pA maximum input bias current, 1.5 mV maximum offset voltage (B grade), 5 μV/°C typical drift, 3.3 V/μs slew rate, and operates from ±5 V to ±15 V supplies - enabling use in micropower instrumentation amplifiers and high-side current sensing.
For engineers reviewing the ADA4062-2ARMZ datasheet, ADA4062-2ARMZ pinout, ADA4062-2ARMZ application, or ADA4062-2ARMZ equivalent, key selection criteria include ultralow input bias current for high-impedance sensor buffering, rail-to-rail output swing capability (±13.5 V/±13.8 V at ±15 V supply), extended temperature operation (−40°C to +125°C), and MSOP-8 packaging for space-constrained PCB layouts.
Technical Context
The ADA4062-2ARMZ employs JFET input stage architecture with 10 TΩ typical input resistance and 1.4 MHz gain bandwidth product, supporting unity-gain stable configurations. Its input common-mode range extends to the positive rail (+15 V) and −11.5 V relative to V–, enabling high-side signal acquisition without phase reversal up to +15 V.
It features dual-channel separation of 135 dB at 1 kHz and low 36 nV/√Hz voltage noise density at 1 kHz, making it suitable for precision DC-coupled amplification where channel crosstalk and noise floor are critical - such as in dual-path sensor interfaces or matched-pair instrumentation topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | 2 pA typical / 50 pA max - enables use with >1 MΩ source impedances without significant DC error. |
| Offset Voltage (B Grade) | 0.5 mV typical / 1.5 mV max - supports sub-mV accuracy in DC-coupled measurement paths. |
| Slew Rate | 3.3 V/μs typical - sufficient for settling 10 V step in ≤3.5 μs (0.1%); adequate for 60 Hz notch filter control loops. |
| Supply Current per Amp | 165 μA typical - allows dual-amplifier operation below 330 μA total, ideal for battery-powered instrumentation. |
| CMRR | 90 dB typical - rejects common-mode interference in noisy industrial environments (e.g., motor drives, PLC I/O). |
| Operating Temp Range | −40°C to +125°C - qualified for under-hood automotive sensors, industrial process controllers, and downhole equipment. |
| Gain Bandwidth Product | 1.4 MHz - supports stable closed-loop gains up to ~140 at 10 kHz, suitable for anti-aliasing and active filtering. |
Pinout & Package
ADA4062-2ARMZ is packaged in an 8-lead MSOP (RM-8), measuring 3.0 mm × 3.0 mm × 0.85 mm, with exposed pad recommended to be connected to V– for thermal and noise performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of sourcing/sinking 20 mA; swings within 1.5 V of rails at ±15 V supply. |
| 2 | –IN A | Inverting input of Amp A; high-impedance node (10 TΩ); sensitive to PCB leakage and guarding requirements. |
| 3 | +IN A | Non-inverting input of Amp A; same impedance and ESD protection as –IN A; used for buffer or follower configurations. |
| 4 | V– | Negative supply rail; exposed pad must be connected to this pin for optimal thermal dissipation and PSRR. |
| 5 | +IN B | Non-inverting input of Amp B; electrically isolated but thermally coupled to Amp A for matched drift behavior. |
| 6 | –IN B | Inverting input of Amp B; identical electrical specs to –IN A; supports dual-channel differential front-end designs. |
| 7 | OUT B | Amplifier B output; independent of OUT A; channel separation ≥135 dB prevents crosstalk in dual-sensor systems. |
| 8 | V+ | Positive supply rail; supports ±5 V to ±15 V operation; PSRR+ = 90 dB typical minimizes supply ripple coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow input bias current | 2 pA typical enables direct interfacing with piezoelectric sensors, pH electrodes, and photodiode transimpedance stages without guard rings. |
| Rail-to-rail output swing | VOH = +13.5 V / VOL = −13.8 V at ±15 V supply maximizes dynamic range in single-supply derived bipolar systems. |
| No phase reversal on overvoltage | Operates safely with inputs up to +15 V (V+) without polarity inversion - critical for high-side current sense where IN+ may float near V+. |
| Matched dual amplifiers | Single-die integration ensures <5 μV/°C offset drift tracking between channels, improving CMRR in 2-op-amp IA topologies. |
| Low 1/f noise | 1.5 μV p-p (0.1–10 Hz) supports high-resolution DC measurements in medical body probe electronics and strain gauge bridges. |
Applications
| High-Side Current Sensing | Notch Filter for 60 Hz Interference |
|---|---|
Use Scenario: Monitoring load current in 24 V industrial power rails using a 0.1 Ω shunt resistor placed between supply and load. IC Role / Device Role / Timing Role: ADA4062-2ARMZ configured as non-inverting amplifier (gain = 5) with input common-mode voltage near +24 V. Use Value: Input range includes V+, eliminating need for level-shifting circuitry; 2 pA bias current avoids shunt resistor error. |
Use Scenario: Removing 60 Hz mains hum from biomedical EEG or ECG signals acquired via high-impedance electrodes. IC Role / Device Role / Timing Role: ADA4062-2ARMZ used as unity-gain buffer driving twin-T notch network (R = 804 kΩ, C = 3.3 nF). Use Value: 1.4 MHz GBW supports >100× center frequency margin; 10 TΩ input resistance permits large R/C values for compact layout. |
| Micropower Instrumentation Amplifier | Input Buffering for High-Impedance Sensors |
Use Scenario: Building a 2-op-amp IA for thermocouple or RTD signal conditioning in portable data loggers powered by coin-cell batteries. IC Role / Device Role / Timing Role: One ADA4062-2ARMZ provides both gain-setting amps (R1/R2 = R3/R4 = 10.1k/1M) in matched die configuration. Use Value: Total supply current ≈ 330 μA enables >1-year battery life; matched drift preserves CMRR across temperature. |
Use Scenario: Conditioning output from glass pH electrode (≥1 GΩ source impedance) in water quality analyzers. IC Role / Device Role / Timing Role: ADA4062-2ARMZ in voltage-follower configuration isolating electrode from downstream ADC input capacitance. Use Value: 2 pA bias current limits DC error to <2 mV with 1 GΩ source; 5 μV/°C drift maintains calibration stability over field temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JFET-input op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8642ARZ | Higher supply current (1.2 mA/amp), lower offset (65 μV max), higher GBP (3.5 MHz), SOIC-8 only. | Better for higher-speed precision applications (e.g., active filters >100 kHz); unsuitable for micropower designs. | Select AD8642ARZ when speed and offset dominate over power; avoid if system budget is <500 μA total. |
| TL072CDR | Higher bias current (200 pA typ), wider offset spread (10 mV max), no extended temp rating (0°C to +70°C only). | Acceptable for commercial-grade audio or general-purpose analog; not qualified for industrial or automotive environments. | Choose TL072CDR only for cost-sensitive, non-critical applications where −40°C to +125°C operation is unnecessary. |
Compared with AD8642ARZ and TL072CDR, the ADA4062-2ARMZ uniquely balances ultralow bias current (2 pA), extended temperature range (−40°C to +125°C), and micropower operation (165 μA/amp) - making it irreplaceable in battery-powered, high-impedance, industrial-grade signal chains.
Availability
ADA4062-2ARMZ is available at Aetrix Electronics and suitable for industrial process controls, body probe electronics, and active filter designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4062-2ARMZ 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 ADA4062 family was designed specifically for ultralow-power, high-precision instrumentation applications - emphasizing JFET input performance, extended temperature reliability, and dual-channel matching for sensor signal conditioning.
FAQ
What is the maximum input common-mode voltage for ADA4062-2ARMZ?
The ADA4062-2ARMZ supports an input common-mode voltage range from −11.5 V to +15 V when operated at ±15 V supplies. This includes the positive rail, enabling direct high-side sensing without external level shifting. At ±5 V supplies, the range is −3.5 V to +5 V. The device does not exhibit phase reversal when inputs exceed the common-mode range but remain within V+ and 0.5 V above V–.
Is ADA4062-2ARMZ pin-compatible with other packages in the ADA4062-2 family?
No - ADA4062-2ARMZ uses the 8-lead MSOP (RM-8) package, which has different pinout and footprint than the SOIC-8 (R-8) or 10-lead LFCSP (CP-10-10) variants. While electrical functionality is identical, PCB layout and thermal design must be adapted for the MSOP's smaller size (3.0 mm × 3.0 mm), exposed pad connection requirement, and 0.65 mm lead pitch.
Does ADA4062-2ARMZ require external compensation for unity-gain stability?
No - ADA4062-2ARMZ is internally compensated and unity-gain stable. It achieves 78° phase margin at AV = 1 with RL = 10 kΩ and CL = 100 pF. Stability is maintained across its full operating temperature range (−40°C to +125°C) and supply range (±5 V to ±15 V), eliminating need for external compensation networks in standard configurations.
What is the typical channel separation for ADA4062-2ARMZ and why does it matter?
ADA4062-2ARMZ provides 135 dB typical channel separation at 1 kHz. This high isolation prevents crosstalk between amplifier A and B - critical in dual-path applications like instrumentation amplifiers, differential sensor pairs, or simultaneous sampling front-ends. It results from monolithic integration and careful layout, not achievable with discrete single-channel op amps.
Can ADA4062-2ARMZ drive capacitive loads directly?
ADA4062-2ARMZ can drive up to 100 pF capacitive loads while maintaining stability and ≤1% overshoot. For larger loads (e.g., ADC input capacitance >100 pF), a series resistor (10–100 Ω) should isolate the op amp output from the capacitor. Driving >1 nF directly risks instability and excessive settling time; refer to Figure 31 and Figure 34 in the datasheet for CL vs. overshoot data.
ADA4062-2ARMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 3.3V/µs
- Gain Bandwidth Product:
- 1.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 750 µV
- Current - Supply:
- 165µA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ADA4062-2ARMZ FAQ
1.How can I place an order for ADA4062-2ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4062-2ARMZ 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 ADA4062-2ARMZ reliable?
The price and inventory of ADA4062-2ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4062-2ARMZ is usually 5 days.
3.What payment methods are accepted for ADA4062-2ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4062-2ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4062-2ARMZ?
ADA4062-2ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4062-2ARMZ 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 ADA4062-2ARMZ?
For technical support, including ADA4062-2ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4062-2ARMZ requirements.
6.How does Aetrix verify that ADA4062-2ARMZ is sourced from the original manufacturer or authorized distributors?
All ADA4062-2ARMZ 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 ADA4062-2ARMZ meets industry standards.
7.What is the process for return or replacement of ADA4062-2ARMZ?
All ADA4062-2ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4062-2ARMZ, 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 ADA4062-2ARMZ part is unused and in its original packaging.
Return procedure for ADA4062-2ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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