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Analog Devices Inc. ADA4622-4ARZ
- Part No.:
- ADA4622-4ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4622-4ARZ.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:134
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Product details
Overview
ADA4622-4ARZ 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 driving. 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. It is used in photodiode transimpedance amplifiers requiring low noise and high DC precision.
For engineers reviewing the ADA4622-4ARZ datasheet, ADA4622-4ARZ pinout, ADA4622-4ARZ application, or ADA4622-4ARZ equivalent, this page provides verified specifications, SOIC_N package details, channel separation performance, EMI rejection at 1 GHz/2.4 GHz, and real-world design implications for precision signal conditioning in industrial and medical instrumentation.
Technical Context
The ADA4622-4ARZ employs an N-channel JFET input stage enabling ultra-low input bias current and high input impedance (>10¹³ Ω), with common-mode input range extending to V− and rail-to-rail output swing. Its architecture includes integrated EMI filters delivering 90 dB rejection at 1 GHz and 2.4 GHz, directly addressing switching-noise robustness in mixed-signal systems.
It features matched quad-channel performance with −106 dB crosstalk at 1 kHz, 20 mA output drive capability, and stable operation into capacitive loads up to 100 pF - enabling direct interface to SAR ADC inputs without external isolation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 8 MHz typical - supports stable closed-loop gain ≥100 up to ~80 kHz with minimal phase margin degradation. |
| Input Bias Current | ±10 pA max at 25°C - enables accurate amplification of signals from high-Z sources like photodiodes or pH electrodes without significant DC error. |
| Offset Voltage (B Grade) | ±0.35 mV max at 25°C - ensures ≤3.5 LSB error when driving a 16-bit, 5 V full-scale SAR ADC. |
| Slew Rate | 23 V/µs (low-to-high) - allows clean 10 V step response in <2 µs, critical for fast-settling ADC driver stages. |
| EMI Rejection Ratio | 90 dB at 1000 MHz and 2400 MHz - suppresses RF interference from Wi-Fi, Bluetooth, or switch-mode power supplies without external filtering. |
| Supply Range | 5 V to 30 V single or ±2.5 V to ±15 V dual - supports wide industrial supply rails while maintaining rail-to-rail output swing. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and downhole sensing applications. |
Pinout & Package
ADA4622-4ARZ is packaged in a 14-lead SOIC_N (Small Outline Integrated Circuit, Narrow) with standard industry pinout and no internal connections on pins 13 and 16 (not present in 14-lead variant). The exposed pad is absent in this package variant.
| Pin | 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 - connects to feedback network in standard op-amp configurations. |
| 3 | +IN A | Noninverting input for Channel A - accepts high-impedance sensor signals with minimal loading error. |
| 4 | V+ | Positive supply rail - must be decoupled with ≥0.1 µF ceramic capacitor near pin for stability. |
| 5 | +IN B | Noninverting input for Channel B - electrically isolated from other channels; enables independent signal paths. |
| 6 | −IN B | Inverting input for Channel B - supports differential or single-ended configurations per channel. |
| 7 | OUT B | Amplifier B output - identical AC/DC specs to OUT A; channel matching enables precision instrumentation topologies. |
| 8 | OUT C | Amplifier C output - maintains same slew rate and noise floor as other channels for multi-channel coherence. |
| 9 | −IN C | Inverting input for Channel C - supports simultaneous multi-sensor acquisition with matched offset drift. |
| 10 | +IN C | Noninverting input for Channel C - low input capacitance (3.6 pF common-mode) minimizes high-frequency peaking. |
| 11 | V− | Negative supply rail - reference for all four amplifiers; input common-mode extends to V− for true single-supply operation. |
| 12 | +IN D | Noninverting input for Channel D - enables 4-channel analog front-end in compact layout without cross-coupling. |
| 13 | −IN D | Inverting input for Channel D - fully specified for crosstalk (−106 dB @ 1 kHz), ensuring signal integrity in dense layouts. |
| 14 | OUT D | Amplifier D output - completes quad-channel set; output impedance <0.6 Ω at 1 kHz ensures low distortion into 2 kΩ loads. |
Key Features
| Feature | Design Value |
|---|---|
| JFET input stage | Enables ±10 pA input bias current and >10¹³ Ω input resistance - preserves signal integrity from megohm-level sensors. |
| Rail-to-rail output | Swings within 65 mV of rails at 1 mA load (5 V supply) - maximizes ADC effective resolution without level-shifting circuitry. |
| Integrated EMI filters | Delivers 90 dB rejection at 1 GHz and 2.4 GHz - eliminates need for external ferrite beads or RC filters in noisy environments. |
| Quad-channel matching | Offset voltage match ≤1 mV and crosstalk ≤−106 dB @ 1 kHz - supports precision differential measurements and multi-channel synchronization. |
| Wide supply range | Operates from 5 V to 30 V - simplifies system-level power architecture by eliminating dedicated low-voltage rails for analog sections. |
Applications
| Photodiode Transimpedance Amplifier | 16-Bit SAR ADC Driver |
|---|---|
|
Use Scenario: Amplifying nanoamp-level photocurrent from a reverse-biased photodiode in optical smoke detection or spectrophotometry. IC Role / Device Role / Timing Role: Precision transimpedance amplifier converting current to voltage with minimal input bias-induced offset error. Use Value: ±10 pA max input bias current prevents >1 mV DC error across 100 MΩ feedback resistor, preserving sub-LSB accuracy. |
Use Scenario: Driving the input of a 16-bit, 1 MSPS successive approximation register (SAR) ADC in data acquisition systems. IC Role / Device Role / Timing Role: High-speed, low-noise buffer providing fast settling (<2 µs to 0.01%) and rail-to-rail swing. Use Value: 23 V/µs slew rate and 8 MHz GBP ensure full-scale step settles within 2 µs, meeting timing budget for 1 MSPS sampling. |
| Precision Multi-Channel Sensor Hub | Industrial Process Monitoring Filter |
|
Use Scenario: Simultaneous conditioning of four independent temperature, pressure, or strain sensor outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Quad-channel precision op amp performing gain, offset correction, and anti-aliasing filtering per channel. Use Value: −106 dB crosstalk at 1 kHz and matched offset drift (±1 µV/°C B grade) prevent inter-channel interference and thermal drift accumulation. |
Use Scenario: Implementing active low-pass and band-pass filters for vibration analysis or motor current monitoring in factory automation. IC Role / Device Role / Timing Role: High-GBW, low-noise amplifier configuring 2nd-order filter stages with precise pole placement. Use Value: 8 MHz GBP and 12.5 nV/√Hz voltage noise density enable clean 10 kHz filter passbands with <0.0003% THD+N distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Zero-drift architecture; 0.005 µV/°C max drift vs. ADA4622-4ARZ's ±1 µV/°C (B grade); higher supply current (1.3 mA/ch). | Better for ultra-stable DC-coupled integrators; less suitable for high-Z AC-coupled sensors due to higher input current (±200 pA). | Select OPA2189IDR when long-term DC stability dominates over input bias and power; avoid where photodiode leakage current must be minimized. |
| LT6015IS6#TRPBF | Single-channel only; wider supply range (up to 50 V); lower GBW (3.2 MHz); higher input bias (±25 pA). | Used in high-voltage industrial signal chains; lacks quad integration and EMI filtering of ADA4622-4ARZ. | Choose LT6015IS6#TRPBF for ruggedized single-channel designs above 30 V; retain ADA4622-4ARZ for space-constrained, multi-channel, noise-immune layouts. |
Compared with OPA2189IDR and LT6015IS6#TRPBF, ADA4622-4ARZ uniquely balances ultra-low input bias, integrated EMI immunity, quad-channel density, and rail-to-rail output - making it optimal for compact, high-fidelity sensor front-ends where board area and RF robustness are critical.
Availability
ADA4622-4ARZ is available at Aetrix Electronics and suitable for industrial process monitoring, medical instrumentation, and test equipment requiring stable component supply, extended temperature operation, and consistent parametric performance across production lots.
Supply support for ADA4622-4ARZ 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, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADA4622 family was designed specifically for high-impedance, precision signal conditioning in harsh electromagnetic environments - targeting photodiode interfaces, ADC drivers, and multi-channel sensor hubs demanding low bias current, EMI resilience, and rail-to-rail output.
FAQ
What is the maximum supply voltage for ADA4622-4ARZ?
The ADA4622-4ARZ has an absolute maximum supply voltage rating of 36 V. Its recommended operating supply range is 5 V to 30 V for single-supply use or ±2.5 V to ±15 V for dual-supply configurations. Operation beyond 30 V may degrade long-term reliability or violate safe operating area limits, even if within absolute maximum ratings.
Does ADA4622-4ARZ support rail-to-rail input?
No, ADA4622-4ARZ does not support rail-to-rail input. Its input common-mode voltage range extends to the negative rail (V−) but only to approximately 1 V below the positive rail (V+). For example, with a 5 V supply, the usable input range is −0.2 V to +4 V - confirmed in Table 3 of the Rev. F datasheet under "Input Voltage Range".
What is the typical input bias current of ADA4622-4ARZ at 125°C?
At +125°C, the ADA4622-4ARZ exhibits a maximum input bias current of ±1.5 nA, as specified in Table 1 (VSY = ±15 V) and Table 2 (VSY = ±5 V) under "Input Bias Current" with condition "−40°C < TA < +125°C". This is significantly higher than its 25°C value (±10 pA) due to JFET leakage increase with temperature.
Is ADA4622-4ARZ pin-compatible with ADA4622-4ACPZ-R7?
No, ADA4622-4ARZ (14-lead SOIC_N) is not pin-compatible with ADA4622-4ACPZ-R7 (16-lead 4×4 mm LFCSP). Their pin counts, physical dimensions, and pin functions differ: the LFCSP variant includes an exposed pad tied to V+, while the SOIC_N has no exposed pad and uses pins 13–14 differently. PCB layout and footprint must be redesigned for interchangeability.
What is the output voltage swing of ADA4622-4ARZ with a 5 V single supply?
With a 5 V single supply and 1 mA load, ADA4622-4ARZ delivers an output voltage swing of 45 mV to 4.95 V - i.e., within 45 mV of the negative rail and 50 mV of the positive rail. This is specified in Table 3 under "Output Voltage Low" (VOL = 45 mV) and "Output Voltage High" (VOH = 4.95 V) at TA = 25°C.
ADA4622-4ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 14-SOIC
ADA4622-4ARZ FAQ
1.How can I place an order for ADA4622-4ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4622-4ARZ 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 ADA4622-4ARZ reliable?
The price and inventory of ADA4622-4ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4622-4ARZ is usually 5 days.
3.What payment methods are accepted for ADA4622-4ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4622-4ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4622-4ARZ?
ADA4622-4ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4622-4ARZ 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 ADA4622-4ARZ?
For technical support, including ADA4622-4ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4622-4ARZ requirements.
6.How does Aetrix verify that ADA4622-4ARZ is sourced from the original manufacturer or authorized distributors?
All ADA4622-4ARZ 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 ADA4622-4ARZ meets industry standards.
7.What is the process for return or replacement of ADA4622-4ARZ?
All ADA4622-4ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4622-4ARZ, 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 ADA4622-4ARZ part is unused and in its original packaging.
Return procedure for ADA4622-4ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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