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Analog Devices Inc. ADA4622-4ARZ-R7
- Part No.:
- ADA4622-4ARZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4622-4ARZ-R7.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:789
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Product details
Overview
ADA4622-4ARZ-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 driving. It delivers 8 MHz gain bandwidth, ±10 pA max input bias current at 25°C, ±0.35 mV max offset voltage (B grade), −40°C to +125°C operation, and 30 V supply capability - enabling precision signal conditioning in photodiode preamps and industrial data acquisition systems.
For engineers reviewing the ADA4622-4ARZ-R7 datasheet, ADA4622-4ARZ-R7 pinout, ADA4622-4ARZ-R7 application, or ADA4622-4ARZ-R7 equivalent, key selection criteria include its 14-lead SOIC_N package, quad-channel matching performance (±1 mV max offset match), low 12.5 nV/√Hz voltage noise density at 1 kHz, and EMI rejection ratio of 90 dB at 1 GHz and 2.4 GHz.
Technical Context
The ADA4622-4ARZ-R7 implements a JFET-input stage with input common-mode range extending to the negative rail (V−) and rail-to-rail output swing. Its architecture improves upon the AD824 with reduced 1/f noise (half), lower offset (half), and enhanced CMRR (up to 100 dB) - critical for noninverting gain and difference amplifier configurations.
It supports single-supply (5 V) and dual-supply (±5 V, ±15 V) operation, features 23 V/µs slew rate (low-to-high), and maintains stable settling (2 µs to 0.01%) into capacitive loads up to 15 pF - making it suitable for driving SAR ADC inputs without external isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 8 MHz typical - enables stable unity-gain and closed-loop configurations up to 10 MHz with adequate phase margin (53°). |
| Input Bias Current | ±10 pA max at 25°C - preserves signal integrity in >100 MΩ source impedance applications like photodiode transimpedance amplifiers. |
| Offset Voltage (B Grade) | ±0.35 mV max at 25°C - reduces DC error in precision instrumentation and sensor front-ends without trimming. |
| Slew Rate | 23 V/µs (low-to-high) - supports fast transient response for 10 V step signals with 2 µs settling to 0.01%. |
| EMI Rejection Ratio | 90 dB at 1 GHz and 2.4 GHz - suppresses RF interference from Wi-Fi/Bluetooth sources near sensitive analog signal paths. |
| Supply Range | 5 V to 30 V - operates from single 5 V rails or dual ±15 V supplies, simplifying power architecture in mixed-signal systems. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment monitoring. |
Pinout & Package
ADA4622-4ARZ-R7 is packaged in a 14-lead SOIC_N (Small Outline Integrated Circuit, Narrow) with standard industry pinout and thermal resistance of 72°C/W on a 2-layer JEDEC board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail swing capable of sourcing/sinking 20 mA with <150 mV dropout at 15 mA sink (5 V supply). |
| 2 | −IN A | Inverting input for Channel A - high-impedance JFET node; input bias current ±10 pA enables high-Z sensor interfacing. |
| 3 | +IN A | Noninverting input for Channel A - common-mode range includes V−, allowing ground-referenced sensor inputs. |
| 4 | V+ | Positive supply rail - accepts 5 V to 30 V; exposed pad not present in SOIC_N variant. |
| 5 | +IN B | Noninverting input for Channel B - matched to Channel A for differential pair or multi-channel filtering. |
| 6 | −IN B | Inverting input for Channel B - supports independent feedback networks per channel. |
| 7 | OUT B | Amplifier B output - electrically identical to OUT A; crosstalk −106 dB at 1 kHz ensures channel isolation. |
| 8 | OUT C | Amplifier C output - enables 3-channel simultaneous signal conditioning without external multiplexing. |
| 9 | −IN C | Inverting input for Channel C - supports cascaded or parallel amplifier topologies. |
| 10 | +IN C | Noninverting input for Channel C - matched offset and drift enable precision multi-channel gain stages. |
| 11 | V− | Negative supply rail - referenced to ground in single-supply mode; input common-mode extends to V−. |
| 12 | +IN D | Noninverting input for Channel D - completes quad-channel functionality for 4-sensor or 4-channel filter banks. |
| 13 | −IN D | Inverting input for Channel D - fully independent with same DC and dynamic specs as other channels. |
| 14 | OUT D | Amplifier D output - enables full 4-channel simultaneous operation with no shared internal nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives within 120 mV of rails at 1 mA load (5 V supply), preserving dynamic range in low-voltage systems. |
| JFET input stage | Delivers ±10 pA max input bias current and 12.5 nV/√Hz voltage noise density - optimal for photodiode and piezoelectric sensors. |
| Enhanced EMI rejection | 90 dB EMIRR at 1 GHz and 2.4 GHz minimizes RF-induced errors in noisy industrial or wireless environments. |
| Quad-channel matching | ±1 mV max offset match and −106 dB crosstalk at 1 kHz ensure consistent gain and phase across all four amplifiers. |
| Extended temperature range | Specified from −40°C to +125°C with guaranteed offset drift ≤±2 µV/°C (B grade) - supports automotive and industrial deployment. |
Applications
| Photodiode Sensor Interface | Transimpedance Amplifier |
|---|---|
Use Scenario: Converting weak photocurrents (pA–nA) from optical sensors into stable voltage outputs in spectrometers and medical pulse oximeters. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and rail-to-rail output to maximize signal-to-noise ratio. Use Value: ±10 pA input bias current prevents signal loss; 12.5 nV/√Hz noise density preserves resolution for sub-100 nA photocurrents. | Use Scenario: High-gain, low-drift current-to-voltage conversion in laser diode monitoring and environmental gas sensing. IC Role / Device Role / Timing Role: Quad-channel TIA core enabling simultaneous measurement of multiple wavelengths or sensor elements. Use Value: ±1 mV offset match across channels eliminates calibration drift between parallel TIAs; 8 MHz GBP supports >100 kHz modulation bandwidth. |
| ADC Driver | Precision Filter Bank |
Use Scenario: Driving the input of SAR ADCs (e.g., AD7980, AD7685) in data loggers and programmable logic controllers. IC Role / Device Role / Timing Role: Low-settling, low-distortion buffer with 2 µs to 0.01% settling time and 0.00035% THD+N. Use Value: 23 V/µs slew rate and 2 µs settling ensure accurate sampling of fast transients; rail-to-rail output maximizes ADC utilization. | Use Scenario: Implementing 4-channel active anti-aliasing or reconstruction filters in audio analyzers and vibration monitors. IC Role / Device Role / Timing Role: Quad op-amp building block for 2nd-order Sallen-Key or MFB filter sections with matched component sensitivity. Use Value: −106 dB crosstalk prevents inter-channel leakage; matched offset and drift (<±2 µV/°C) maintain filter symmetry over temperature. |
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 input bias current (±0.3 pA), higher GBP (10 MHz), but only specified to +105°C and lacks EMI rejection spec. | Preferred for ultra-high-Z pH or ion-selective electrodes; less suitable for automotive or RF-noisy industrial settings. | Select OPA4182IPW when sub-pA bias dominates design priority and EMI immunity is secondary. |
| LT6014CS#PBF | Higher input bias current (±25 pA), lower noise (11 nV/√Hz), rail-to-rail input, but slower slew rate (0.13 V/µs) and narrower GBP (1.9 MHz). | Better for low-frequency, high-DC-precision applications (e.g., strain gauge bridges); unsuitable for ADC driving above 100 kSPS. | Choose LT6014CS#PBF for microvolt-level DC stability where speed is not required. |
Compared with OPA4182IPW and LT6014CS#PBF, ADA4622-4ARZ-R7 uniquely balances ultra-low bias current, 8 MHz bandwidth, 90 dB EMI rejection, and full −40°C to +125°C qualification - making it the only option among the three qualified for high-speed, high-Z, high-reliability industrial sensing.
Availability
ADA4622-4ARZ-R7 is available at Aetrix Electronics and suitable for photodiode interface circuits, SAR ADC driver designs, and precision multi-channel filter banks requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4622-4ARZ-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.
The ADA4622 family was designed as a next-generation upgrade to the AD824, targeting high-impedance sensor signal chains requiring low bias current, low noise, rail-to-rail output, and robust EMI immunity in harsh environments.
FAQ
What is the maximum supply voltage for ADA4622-4ARZ-R7?
The ADA4622-4ARZ-R7 has an absolute maximum supply voltage rating of 36 V, with recommended operating range from 5 V to 30 V. It supports both single-supply (e.g., 5 V, 12 V, 24 V) and dual-supply (±5 V, ±15 V) configurations. Operation beyond 30 V is not characterized and may compromise long-term reliability or parametric guarantees.
Does ADA4622-4ARZ-R7 support rail-to-rail input?
No, ADA4622-4ARZ-R7 does not support rail-to-rail input. Its input common-mode voltage range extends to the negative rail (V−) but stops approximately 1 V below the positive rail (V+). For example, with ±15 V supplies, input common-mode range is −15.2 V to +14 V; with 5 V single supply, it is −0.2 V to +4 V.
What is the typical input bias current of ADA4622-4ARZ-R7 at 25°C?
The typical input bias current of ADA4622-4ARZ-R7 at 25°C is ±2 pA, with a maximum of ±10 pA for the B grade. This ultra-low value is enabled by its JFET input stage and makes it suitable for interfacing with high-output-impedance sensors such as photodiodes and piezoelectric elements without significant signal attenuation.
Is ADA4622-4ARZ-R7 pin-compatible with the AD824?
No, ADA4622-4ARZ-R7 is not pin-compatible with the AD824. While both are quad op-amps in SOIC packages, the AD824 uses a 14-lead SOIC with different pin assignments (e.g., AD824 pin 1 = V−, pin 14 = V+), whereas ADA4622-4ARZ-R7 assigns pin 1 to OUT A and pin 4 to V+. PCB layout changes are required for direct replacement.
What is the EMI rejection ratio of ADA4622-4ARZ-R7 at 2.4 GHz?
The ADA4622-4ARZ-R7 exhibits a typical electromagnetic interference rejection ratio (EMIRR) of 90 dB at 2.4 GHz, measured with 100 mV p-p input signal. This high rejection level ensures robust operation in proximity to Bluetooth, Zigbee, and 2.4 GHz ISM-band transmitters commonly found in industrial IoT gateways and medical telemetry devices.
ADA4622-4ARZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- 14-SOIC
ADA4622-4ARZ-R7 FAQ
1.How can I place an order for ADA4622-4ARZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4622-4ARZ-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 ADA4622-4ARZ-R7 reliable?
The price and inventory of ADA4622-4ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4622-4ARZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4622-4ARZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4622-4ARZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4622-4ARZ-R7?
ADA4622-4ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4622-4ARZ-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 ADA4622-4ARZ-R7?
For technical support, including ADA4622-4ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4622-4ARZ-R7 requirements.
6.How does Aetrix verify that ADA4622-4ARZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4622-4ARZ-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 ADA4622-4ARZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4622-4ARZ-R7?
All ADA4622-4ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4622-4ARZ-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 ADA4622-4ARZ-R7 part is unused and in its original packaging.
Return procedure for ADA4622-4ARZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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