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

Analog Devices Inc. ADA4622-4ACPZ-R7

Name: ADA4622-4ACPZ-R7
Brand: Analog Devices Inc.
SKU: ADA4622-4ACPZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4622-4ACPZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 16-WQFN Exposed Pad, CSP

Datasheet:: ADA4622-4ACPZ-R7.pdf

Description:: IC OPAMP JFET 4 CIRCUIT 16LFCSP

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Product details

Overview

ADA4622-4ACPZ-R7 from Analog Devices is a quad-channel, rail-to-rail output (RRO), precision JFET-input operational amplifier optimized for high-impedance sensor interfaces and ADC driver applications. It delivers 8 MHz gain bandwidth, ±10 pA max input bias current at 25°C, ±0.35 mV max offset voltage (B grade), and operates from 5 V to 30 V supply across −40°C to +125°C.

For engineers reviewing the ADA4622-4ACPZ-R7 datasheet, ADA4622-4ACPZ-R7 pinout, ADA4622-4ACPZ-R7 application, or ADA4622-4ACPZ-R7 equivalent, this page provides verified specifications, package mapping to 16-lead 4×4 mm LFCSP, channel-level pin functions, real-world use cases in photodiode preamplification and precision filtering, and two validated alternative parts with documented functional trade-offs.

Technical Context

The ADA4622-4ACPZ-R7 implements a low-noise N-channel JFET input stage enabling ultra-low input bias current and high common-mode rejection (≥87 dB B grade). Its rail-to-rail output swing supports full dynamic range utilization in single-supply systems, while integrated EMI filters deliver 90 dB rejection at 1 GHz and 2.4 GHz.

Designed as a drop-in upgrade to AD824, it improves slew rate (23 V/µs typ), reduces 1/f noise by 50%, halves offset voltage, adds guaranteed thermal drift specs (±1 µV/°C B grade), and enhances CMRR for noninverting and difference amplifier configurations.

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 SAR ADCs.
Input Bias Current	±10 pA max at 25°C - preserves signal integrity in photodiode and piezoelectric sensor interfaces with source impedances >1 GΩ.
Offset Voltage (B grade)	±0.35 mV max at 25°C - ensures <0.01% error in 3.3 V full-scale precision instrumentation front-ends.
Slew Rate	23 V/µs (low-to-high) - supports fast settling (<2 µs to 0.01%) for 10 V step inputs driving 2 kΩ//15 pF loads.
Supply Range	5 V to 30 V (±2.5 V to ±15 V) - compatible with industrial 24 V rails and low-voltage battery-powered systems without level-shifting.
EMI Rejection Ratio	90 dB at 1 GHz and 2.4 GHz - mitigates RF interference from Wi-Fi/Bluetooth co-location in compact IoT sensor nodes.
Operating Temperature	−40°C to +125°C - qualified for under-hood automotive, motor control feedback, and industrial PLC analog I/O modules.

Pinout & Package

ADA4622-4ACPZ-R7 is packaged in a 16-lead, 4 × 4 mm LFCSP (Lead Frame Chip Scale Package) with exposed pad. The package supports high thermal efficiency (θJA = 48°C/W on 2-layer JEDEC board) and requires the EPAD to be connected to V+ for optimal performance and reliability.

Pin/Terminal	Circuit Role	Design Meaning
1	−IN A	Inverting input of Channel A - connects directly to feedback network in inverting amplifier configurations.
2	+IN A	Noninverting input of Channel A - accepts high-impedance sensor signals with minimal loading.
3	V+	Positive supply rail - powers all four amplifiers; EPAD must be tied to this node.
4	+IN B	Noninverting input of Channel B - electrically isolated from Channel A for dual-sensor differential acquisition.
5	−IN B	Inverting input of Channel B - used for matched gain-setting in multi-channel instrumentation amps.
6	OUT B	Output of Channel B - rail-to-rail swing supports direct interface to 12-bit+ SAR ADC reference buffers.
7	OUT C	Output of Channel C - independent output enables simultaneous signal conditioning for multiple sensor axes.
8	−IN C	Inverting input of Channel C - shares V− and V+ rails but maintains channel separation >106 dB at 1 kHz.
9	+IN C	Noninverting input of Channel C - supports true differential input pairs when paired with adjacent −IN pins.
10	V−	Negative supply rail - referenced to system ground in single-supply operation; input common-mode extends to V−.
11	+IN D	Noninverting input of Channel D - completes quad-channel set for multi-parameter sensor fusion (e.g., temp/pressure/humidity).
12	−IN D	Inverting input of Channel D - enables four independent transimpedance amplifiers on one die.
13, 16	NIC	Not internally connected - no electrical function; may be left floating or grounded for mechanical stability.
14	OUT D	Output of Channel D - fully specified for 20 mA drive capability into 2 kΩ loads at ±15 V supply.
15	OUT A	Output of Channel A - first output in pin sequence; matches OUT B/C/D in AC/DC performance and load drive.

Key Features

Feature	Design Value
Rail-to-rail output swing	Drives within 50 mV of rails at 1 mA load - maximizes dynamic range in 3.3 V or 5 V microcontroller-based data loggers.
Low 1/f noise	1 µV/°C max offset drift (B grade) - eliminates calibration drift in precision weigh scales and strain gauge bridges over temperature.
JFET input architecture	10¹³ Ω input resistance - prevents signal attenuation in pH electrode and capacitive humidity sensor interfaces.
EMI-hardened design	90 dB rejection at cellular/Wi-Fi frequencies - removes need for external RF filtering in medical wearable ECG front-ends.
Quad-channel integration	Four matched amplifiers in one 4×4 mm package - reduces PCB area by 60% vs. discrete SOIC-14 solutions in 4-channel data acquisition systems.

Applications

Photodiode Sensor Interface	Transimpedance Amplifier
Use Scenario: High-gain current-to-voltage conversion for low-light optical detection in pulse oximeters and spectrophotometers. IC Role / Device Role / Timing Role: Primary transimpedance amplifier with 1 GΩ feedback resistor, leveraging ultra-low input bias current to avoid signal loss. Use Value: Enables sub-picoampere photocurrent resolution without guard rings or Teflon insulation, reducing BOM cost and layout complexity.	Use Scenario: Precision current measurement in industrial motor phase-current sensing using shunt resistors. IC Role / Device Role / Timing Role: Low-drift, high-CMRR difference amplifier front-end with matched internal resistors for gain accuracy. Use Value: Delivers <0.05% gain error over temperature, eliminating per-unit calibration in servo drive production lines.
ADC Driver	Precision Filter Stage
Use Scenario: Driving the input of 16-bit SAR ADCs (e.g., AD7980) in data acquisition modules requiring low THD+N. IC Role / Device Role / Timing Role: Buffer and level-shifter between sensor signal chain and ADC sample-and-hold input. Use Value: 0.00035% THD+N at 1 kHz ensures >95 dB SNR preservation, meeting Class A power quality monitoring requirements.	Use Scenario: 2nd-order active low-pass filtering in vibration analysis equipment targeting 1–10 kHz bandwidth. IC Role / Device Role / Timing Role: Dual-op-amp Sallen-Key topology implementing unity-gain stable 5 kHz cutoff with minimal component count. Use Value: 8 MHz GBP and 53° phase margin guarantee monotonic step response without peaking or ringing artifacts.

Photodiode Sensor Interface

Transimpedance Amplifier

Use Scenario: High-gain current-to-voltage conversion for low-light optical detection in pulse oximeters and spectrophotometers.

IC Role / Device Role / Timing Role: Primary transimpedance amplifier with 1 GΩ feedback resistor, leveraging ultra-low input bias current to avoid signal loss.

Use Value: Enables sub-picoampere photocurrent resolution without guard rings or Teflon insulation, reducing BOM cost and layout complexity.

Use Scenario: Precision current measurement in industrial motor phase-current sensing using shunt resistors.

IC Role / Device Role / Timing Role: Low-drift, high-CMRR difference amplifier front-end with matched internal resistors for gain accuracy.

Use Value: Delivers <0.05% gain error over temperature, eliminating per-unit calibration in servo drive production lines.

ADC Driver

Precision Filter Stage

Use Scenario: Driving the input of 16-bit SAR ADCs (e.g., AD7980) in data acquisition modules requiring low THD+N.

IC Role / Device Role / Timing Role: Buffer and level-shifter between sensor signal chain and ADC sample-and-hold input.

Use Value: 0.00035% THD+N at 1 kHz ensures >95 dB SNR preservation, meeting Class A power quality monitoring requirements.

Use Scenario: 2nd-order active low-pass filtering in vibration analysis equipment targeting 1–10 kHz bandwidth.

IC Role / Device Role / Timing Role: Dual-op-amp Sallen-Key topology implementing unity-gain stable 5 kHz cutoff with minimal component count.

Use Value: 8 MHz GBP and 53° phase margin guarantee monotonic step response without peaking or ringing artifacts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
OPA4182IPW	Lower offset drift (±0.02 µV/°C), higher supply current (650 µA/channel), no EMI filtering.	Better for ultra-stable DC-coupled thermocouple amplifiers; unsuitable for RF-noisy environments without added shielding.	Choose OPA4182IPW when long-term DC stability outweighs EMI robustness and power budget allows +100 µA/channel increase.
LT6015CGN#PBF	Higher input bias current (±250 pA), wider supply range (4.5 V to 50 V), rail-to-rail input.	Preferred for high-voltage industrial sensors (e.g., 4–20 mA loop receivers); lacks JFET-level input impedance for photodiodes.	Choose LT6015CGN#PBF when interfacing to high-side current sense or wide-supply industrial buses where input rail-to-rail is mandatory.

Compared with OPA4182IPW and LT6015CGN#PBF, ADA4622-4ACPZ-R7 uniquely balances ultra-low input bias current, integrated EMI hardening, and quad-channel density in a thermally efficient LFCSP-making it optimal for space-constrained, noise-prone sensor nodes requiring four matched precision amplifiers.

Availability

ADA4622-4ACPZ-R7 is available at Aetrix Electronics and suitable for photodiode sensor interfaces, transimpedance amplifiers, and precision ADC driver applications requiring stable component supply across automotive, industrial, and medical end markets.

Supply support for ADA4622-4ACPZ-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 engineered as a next-generation replacement for AD824, targeting high-impedance sensor signal chains and precision data acquisition systems demanding low noise, low drift, and robust EMI immunity in extended temperature environments.

FAQ

What is the maximum supply voltage rating for ADA4622-4ACPZ-R7?

The ADA4622-4ACPZ-R7 has an absolute maximum supply voltage rating of 36 V, with recommended operating range from 5 V to 30 V (±2.5 V to ±15 V). Operation beyond 30 V risks exceeding internal junction limits and is not characterized. Always observe the −0.3 V to +0.2 V input voltage range relative to supply rails to prevent latch-up or permanent damage in the ADA4622-4ACPZ-R7.

Does ADA4622-4ACPZ-R7 support single-supply operation?

Yes, ADA4622-4ACPZ-R7 supports true single-supply operation down to 5 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. This enables direct interfacing with 3.3 V or 5 V microcontrollers and ADCs without level-shifting circuitry in the ADA4622-4ACPZ-R7 signal path.

What is the thermal resistance (θJA) of ADA4622-4ACPZ-R7 in its LFCSP package?

The ADA4622-4ACPZ-R7 in the 16-lead 4×4 mm LFCSP package has a thermal resistance θJA of 48°C/W on a standard 2-layer JEDEC test board. With two 2×2 thermal vias under the exposed pad, θJA improves to 55°C/W. These values assume the EPAD is soldered and connected to V+, enabling reliable operation at full 20 mA per channel output drive across the −40°C to +125°C range in the ADA4622-4ACPZ-R7.

How does ADA4622-4ACPZ-R7 handle input overvoltage conditions?

The ADA4622-4ACPZ-R7 includes internal protection diodes allowing input voltages up to 0.3 V beyond either supply rail without damage. For overvoltages exceeding this limit, a series current-limiting resistor is required at each input. This protection scheme prevents latch-up and maintains functionality during transient events such as ESD or inductive kickback in the ADA4622-4ACPZ-R7's sensor interface applications.

Is ADA4622-4ACPZ-R7 pin-compatible with AD824ARZ-14?

No, ADA4622-4ACPZ-R7 is not pin-compatible with AD824ARZ-14. While both are quad op amps in SOIC-14 packages, ADA4622-4ACPZ-R7 uses a 16-lead LFCSP with different pin assignments (e.g., V+ on Pin 3, NIC on Pins 13/16). AD824ARZ-14 places V+ on Pin 4 and has no NIC pins. Migration requires PCB redesign, though functional equivalence and improved specs make ADA4622-4ACPZ-R7 a recommended upgrade path.

ADA4622-4ACPZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 16-WQFN Exposed Pad, CSP

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: J-FET

Number of Circuits:: 4

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:: 715µA (x4 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:: 16-LFCSP (4x4)

ADA4622-4ACPZ-R7 FAQ

1.How can I place an order for ADA4622-4ACPZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4622-4ACPZ-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 ADA4622-4ACPZ-R7 reliable?

The price and inventory of ADA4622-4ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4622-4ACPZ-R7 is usually 5 days.

3.What payment methods are accepted for ADA4622-4ACPZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4622-4ACPZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4622-4ACPZ-R7?

ADA4622-4ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4622-4ACPZ-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 ADA4622-4ACPZ-R7?

For technical support, including ADA4622-4ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4622-4ACPZ-R7 requirements.

6.How does Aetrix verify that ADA4622-4ACPZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADA4622-4ACPZ-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 ADA4622-4ACPZ-R7 meets industry standards.

7.What is the process for return or replacement of ADA4622-4ACPZ-R7?

All ADA4622-4ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4622-4ACPZ-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 ADA4622-4ACPZ-R7 part is unused and in its original packaging.

Return procedure for ADA4622-4ACPZ-R7:

1.Submit a request within 90 days.

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

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