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

Analog Devices Inc. ADA4622-2ARMZ-R7

Name: ADA4622-2ARMZ-R7
Brand: Analog Devices Inc.
SKU: ADA4622-2ARMZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4622-2ARMZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: ADA4622-2ARMZ-R7.pdf

Description:: IC OPAMP JFET 2 CIRCUIT 8MSOP

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Product details

Overview

ADA4622-2ARMZ-R7 from Analog Devices is a dual-channel, precision JFET-input operational amplifier optimized for high-impedance sensor interfaces and ADC driving in single-supply systems. It delivers 8 MHz gain bandwidth, ±10 pA max input bias current at 25°C, ±0.35 mV max offset voltage (B grade), rail-to-rail output swing, and operates from 5 V to 30 V supply. It is used in photodiode transimpedance amplifiers requiring low noise and minimal input current error.

For engineers reviewing the ADA4622-2ARMZ-R7 datasheet, ADA4622-2ARMZ-R7 pinout, ADA4622-2ARMZ-R7 application, or ADA4622-2ARMZ-R7 equivalent, key selection criteria include verified input bias current ≤10 pA, guaranteed offset drift ≤2 µV/°C (B grade), confirmed 8-lead MSOP package with industry-standard pinout, and documented EMI rejection of 90 dB at 1 GHz and 2.4 GHz.

Technical Context

The ADA4622-2ARMZ-R7 employs an N-channel JFET input stage enabling ultra-low input bias current and high input impedance (>10¹³ Ω), with common-mode range extending to the negative rail. Its rail-to-rail output stage supports full-swing signal conditioning into SAR ADC inputs without level-shifting circuitry.

It integrates on-chip EMI filtering to suppress interference from nearby RF sources (e.g., Wi-Fi/Bluetooth modules), and features matched channel performance-offset voltage match ≤1 mV and crosstalk ≤−112 dB at 1 kHz-enabling accurate differential and multiplexed signal paths in precision instrumentation.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	8 MHz typical - enables stable closed-loop operation up to ~100 kHz with gain ≥80, suitable for anti-aliasing filter stages before 1 MSPS SAR ADCs.
Input Bias Current	±10 pA maximum at TA = 25°C - minimizes voltage error across high-impedance sources (e.g., >100 MΩ photodiode circuits).
Offset Voltage (B grade)	±0.35 mV maximum at TA = 25°C - ensures <0.01% gain error in unity-gain buffer configurations with 10 V full-scale signals.
Offset Voltage Drift	±2 µV/°C maximum (ADA4622-2 only) - limits total offset drift to <0.25 mV over −40°C to +125°C industrial temperature range.
Slew Rate	23 V/µs (low-to-high), −18 V/µs (high-to-low) - supports fast settling (<2 µs to 0.01%) for 10 V step inputs into 2 kΩ//15 pF loads.
EMI Rejection Ratio	90 dB typical at 1000 MHz and 2400 MHz - maintains DC accuracy in proximity to cellular/Wi-Fi transceivers without external shielding.
Supply Range	5 V to 30 V (±2.5 V to ±15 V) - compatible with both single-ended 5 V/12 V/24 V industrial rails and split-supply lab equipment.

Pinout & Package

ADA4622-2ARMZ-R7 is packaged in an 8-lead Mini Small Outline Package (MSOP), pin-compatible with industry-standard SOIC_N footprints and offering improved thermal performance (θJA = 185°C/W on 2-layer JEDEC board). The exposed pad must be connected to V+ for optimal thermal dissipation and EMI immunity.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Amplifier A output - drives external load or ADC input; rail-to-rail swing supports full dynamic range utilization.
2	−IN A	Inverting input for Channel A - forms feedback node in standard op-amp configurations (e.g., inverting amplifier, transimpedance).
3	+IN A	Noninverting input for Channel A - accepts high-impedance sensor signals; common-mode range includes V−.
4	V−	Negative supply rail - referenced to system ground in single-supply operation; supports input down to V− − 0.2 V.
5	+IN B	Noninverting input for Channel B - enables dual-channel signal conditioning without cross-talk degradation (−112 dB at 1 kHz).
6	−IN B	Inverting input for Channel B - electrically isolated from Channel A; matches offset and drift specifications.
7	OUT B	Amplifier B output - independent output stage allows simultaneous processing of two analog channels.
8	V+	Positive supply rail - powers both amplifiers; exposed pad connection improves thermal resistance by ~30%.

Key Features

Feature	Design Value
Low Input Bias Current	±10 pA max at 25°C - preserves signal integrity in photodiode, pH electrode, and piezoelectric sensor interfaces where leakage dominates error budget.
Rail-to-Rail Output	Swings within 50 mV of rails at 1 mA load - maximizes ADC input utilization and eliminates need for level-shifting in 5 V/3.3 V systems.
EMI Filtering	90 dB rejection at 1 GHz and 2.4 GHz - mitigates measurement corruption from wireless co-location without added ferrites or shielding.
JFET Input Stage	10¹³ Ω input resistance, 0.4 pF differential capacitance - enables stable high-frequency feedback networks and reduces phase margin loss in capacitive-source applications.
Industrial Temperature Range	Specified from −40°C to +125°C - supports deployment in automotive engine control units, industrial motor drives, and outdoor instrumentation.

Applications

Photodiode Sensor Interface	Transimpedance Amplifier
Use Scenario: Converting weak photocurrent (pA–nA) from a reverse-biased silicon photodiode into a measurable voltage under ambient light or pulsed laser illumination. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and low voltage noise density (12.5 nV/√Hz at 1 kHz) to minimize Johnson and shot noise contributions. Use Value: Enables sub-picoamp resolution without guard rings or Teflon insulation; 0.75 µV p-p 0.1–10 Hz noise supports low-frequency spectroscopy.	Use Scenario: High-gain (10⁶–10⁸ V/A), wideband current-to-voltage conversion for optical power monitoring in fiber-optic receivers. IC Role / Device Role / Timing Role: Dual-channel transimpedance core with matched offset and drift, allowing differential photodiode pair readout to cancel common-mode optical noise. Use Value: Offset match ≤1 mV and crosstalk ≤−112 dB ensure <0.001% differential gain error; 8 MHz GBP supports >100 kHz modulation bandwidth.
ADC Driver	Precision Signal Conditioning
Use Scenario: Driving the switched-capacitor input of a 16-bit, 1 MSPS SAR ADC (e.g., AD7980) with minimal settling time and distortion. IC Role / Device Role / Timing Role: Low-output-impedance buffer (0.1 Ω at 1 kHz) providing fast settling (2 µs to 0.01%) and THD+N = 0.00035% at 1 kHz. Use Value: Eliminates external RC filter requirements; rail-to-rail output ensures full ADC code utilization without headroom loss.	Use Scenario: Low-drift, low-noise amplification of thermocouple or strain gauge outputs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Dual-channel instrumentation-grade amplifier front-end with ±2 µV/°C max drift and 87 dB CMRR at 60 Hz. Use Value: Reduces calibration frequency to once per year in industrial environments; 117 dB open-loop gain enables <1 ppm linearity error in 100× gain stages.

Photodiode Sensor Interface

Transimpedance Amplifier

Use Scenario: Converting weak photocurrent (pA–nA) from a reverse-biased silicon photodiode into a measurable voltage under ambient light or pulsed laser illumination.

IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and low voltage noise density (12.5 nV/√Hz at 1 kHz) to minimize Johnson and shot noise contributions.

Use Value: Enables sub-picoamp resolution without guard rings or Teflon insulation; 0.75 µV p-p 0.1–10 Hz noise supports low-frequency spectroscopy.

Use Scenario: High-gain (10⁶–10⁸ V/A), wideband current-to-voltage conversion for optical power monitoring in fiber-optic receivers.

IC Role / Device Role / Timing Role: Dual-channel transimpedance core with matched offset and drift, allowing differential photodiode pair readout to cancel common-mode optical noise.

Use Value: Offset match ≤1 mV and crosstalk ≤−112 dB ensure <0.001% differential gain error; 8 MHz GBP supports >100 kHz modulation bandwidth.

ADC Driver

Precision Signal Conditioning

Use Scenario: Driving the switched-capacitor input of a 16-bit, 1 MSPS SAR ADC (e.g., AD7980) with minimal settling time and distortion.

IC Role / Device Role / Timing Role: Low-output-impedance buffer (0.1 Ω at 1 kHz) providing fast settling (2 µs to 0.01%) and THD+N = 0.00035% at 1 kHz.

Use Value: Eliminates external RC filter requirements; rail-to-rail output ensures full ADC code utilization without headroom loss.

Use Scenario: Low-drift, low-noise amplification of thermocouple or strain gauge outputs in programmable logic controller (PLC) analog input modules.

IC Role / Device Role / Timing Role: Dual-channel instrumentation-grade amplifier front-end with ±2 µV/°C max drift and 87 dB CMRR at 60 Hz.

Use Value: Reduces calibration frequency to once per year in industrial environments; 117 dB open-loop gain enables <1 ppm linearity error in 100× gain stages.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
OPA2182IDR	Zero-drift architecture; 0.02 µV/°C max drift vs. ADA4622-2ARMZ-R7's ±2 µV/°C; higher supply current (650 µA vs. 675 µA); no integrated EMI filter.	Better for µV-level DC stability over temperature; less suited for RF-noisy environments without external filtering.	Select OPA2182IDR when long-term DC accuracy dominates; retain ADA4622-2ARMZ-R7 for mixed-signal boards with Wi-Fi/BT radios.
AD8622ARZ	FET-input like ADA4622-2ARMZ-R7 but lower GBP (1.5 MHz vs. 8 MHz); higher input bias current (1 pA typ vs. 0.002 pA typ); same 8-lead SOIC package.	Lower bandwidth limits use in fast ADC drivers or wideband filters; acceptable for DC-coupled sensor buffers below 100 kHz.	Choose AD8622ARZ for cost-sensitive, low-speed precision applications; ADA4622-2ARMZ-R7 preferred for >100 kHz signal chains.

Compared with OPA2182IDR and AD8622ARZ, ADA4622-2ARMZ-R7 uniquely balances ultra-low input bias current, 8 MHz bandwidth, and on-chip EMI rejection-making it optimal for high-impedance, high-speed, RF-adjacent signal conditioning where zero-drift stability is secondary to noise immunity and slew rate.

Availability

ADA4622-2ARMZ-R7 is available at Aetrix Electronics and suitable for photodiode sensor interfaces, transimpedance amplifiers, and precision ADC driver applications requiring stable component supply across industrial, test & measurement, and medical device programs.

Supply support for ADA4622-2ARMZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The ADA4622 family was designed specifically for high-impedance, low-noise, single-supply precision signal conditioning-targeting photodiode preamps, strain gauge amplifiers, and SAR ADC drivers where JFET input characteristics and EMI robustness are critical.

FAQ

What is the operating temperature range for the ADA4622-2ARMZ-R7?

The ADA4622-2ARMZ-R7 is specified for continuous operation from −40°C to +125°C, meeting extended industrial requirements. All key parameters-including offset voltage, input bias current, and gain bandwidth-are guaranteed across this full range, with offset drift limited to ±2 µV/°C (B grade) and supply current varying by <10% over temperature.

Does the ADA4622-2ARMZ-R7 support single-supply operation?

Yes, the ADA4622-2ARMZ-R7 supports true single-supply operation from 5 V to 30 V. Its input common-mode range extends to the negative rail (V−), and its rail-to-rail output swings within 50 mV of both supply rails at 1 mA load-enabling direct interfacing with 3.3 V or 5 V microcontrollers and ADCs without level-shifting circuitry.

What package type is used for the ADA4622-2ARMZ-R7?

The ADA4622-2ARMZ-R7 uses an 8-lead Mini Small Outline Package (MSOP) with exposed pad. This package provides superior thermal performance versus SOIC (θJA = 185°C/W on 2-layer board) and is pin-compatible with standard 8-lead SOIC footprints, easing layout migration while improving EMI immunity via the V+-connected exposed pad.

How does the EMI rejection ratio benefit system design?

The ADA4622-2ARMZ-R7 delivers 90 dB typical EMI rejection at both 1000 MHz and 2400 MHz due to integrated input filtering. This eliminates the need for external RF chokes or shielded enclosures in designs co-located with Wi-Fi, Bluetooth, or cellular transceivers-reducing BOM count, PCB area, and validation effort while maintaining DC accuracy in noisy environments.

Is the ADA4622-2ARMZ-R7 pin-compatible with other members of the ADA4622 family?

No-ADA4622-2ARMZ-R7 (dual-channel, 8-lead MSOP/SOIC) is not pin-compatible with ADA4622-1 (single-channel, 5-lead SOT-23 or 8-lead LFCSP) or ADA4622-4 (quad-channel, 14-lead SOIC or 16-lead LFCSP). Pin functions and counts differ across variants; only the 8-lead MSOP and SOIC_N packages of ADA4622-2 share identical pinouts.

ADA4622-2ARMZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: J-FET

Number of Circuits:: 2

Output Type:: Rail-to-Rail

Slew Rate:: 23V/µs

Gain Bandwidth Product:: 8 MHz

-3db Bandwidth:: 15.5 MHz

Current - Input Bias:: 2 pA

Voltage - Input Offset:: 40 µV

Current - Supply:: 665µA (x2 Channels)

Current - Output / Channel:: 20 mA

Voltage - Supply Span (Min):: 5 V

Voltage - Supply Span (Max):: 30 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MSOP

ADA4622-2ARMZ-R7 FAQ

1.How can I place an order for ADA4622-2ARMZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4622-2ARMZ-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 ADA4622-2ARMZ-R7 reliable?

The price and inventory of ADA4622-2ARMZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4622-2ARMZ-R7 is usually 5 days.

3.What payment methods are accepted for ADA4622-2ARMZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4622-2ARMZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4622-2ARMZ-R7?

ADA4622-2ARMZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4622-2ARMZ-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 ADA4622-2ARMZ-R7?

For technical support, including ADA4622-2ARMZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4622-2ARMZ-R7 requirements.

6.How does Aetrix verify that ADA4622-2ARMZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADA4622-2ARMZ-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 ADA4622-2ARMZ-R7 meets industry standards.

7.What is the process for return or replacement of ADA4622-2ARMZ-R7?

All ADA4622-2ARMZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4622-2ARMZ-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 ADA4622-2ARMZ-R7 part is unused and in its original packaging.

Return procedure for ADA4622-2ARMZ-R7:

1.Submit a request within 90 days.

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

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