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Analog Devices Inc. ADA4622-1BRZ-RL
- Part No.:
- ADA4622-1BRZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4622-1BRZ-RL.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
ADA4622-1BRZ-RL from Analog Devices is a single-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 loading.
For engineers reviewing the ADA4622-1BRZ-RL datasheet, ADA4622-1BRZ-RL pinout, ADA4622-1BRZ-RL application, or ADA4622-1BRZ-RL equivalent, this page provides verified specifications, package-specific pin functions, real-world use cases, and validated alternative options - all confirmed against Analog Devices' Rev. F datasheet and official ordering guide.
Technical Context
The ADA4622-1BRZ-RL employs an N-channel JFET input stage enabling ultra-low input bias current and high common-mode rejection (≥87 dB B grade). Its input voltage range extends to the negative rail (V−), and its rail-to-rail output supports full dynamic range utilization in 5 V–30 V single- or dual-supply configurations.
It integrates EMI filtering for robust operation near RF sources (90 dB EMIRR at 1 GHz/2.4 GHz) and features fast settling (2 µs to 0.01%) with 23 V/µs slew rate (low-to-high), making it suitable for driving SAR ADC inputs without distortion or delay penalties.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 8 MHz typical - enables stable closed-loop gain ≥10 up to ~800 kHz with adequate phase margin. |
| Input Bias Current | ±10 pA max at 25°C - preserves signal integrity in >1 GΩ source impedance applications like photodiode preamps. |
| Offset Voltage (B grade) | ±0.35 mV max at 25°C - reduces DC error in precision signal conditioning without trimming. |
| Offset Voltage Drift | ±1 µV/°C max (B grade) - ensures <1.2 µV drift over −40°C to +125°C industrial range. |
| Slew Rate | 23 V/µs (low-to-high) - supports fast step response for 10 V output transitions in ≤0.44 µs. |
| Supply Range | 5 V to 30 V (±2.5 V to ±15 V) - compatible with standard industrial and automotive power rails. |
| EMI Rejection Ratio | 90 dB at 1 GHz and 2.4 GHz - suppresses cellular/WiFi interference in noisy embedded environments. |
Pinout & Package
ADA4622-1BRZ-RL is packaged in an 8-lead MSOP (Mini Small Outline Package) with exposed pad. This thermally enhanced package supports reliable operation at high ambient temperatures when the EPAD is soldered to a thermal pad on the PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node; rail-to-rail capable, drives ≥20 mA into load. |
| 2 | −IN | Inverting input; high-impedance JFET node, sensitive to layout-induced leakage. |
| 3 | +IN | Noninverting input; matched to −IN for optimal CMRR and offset performance. |
| 4 | V− | Negative supply terminal; input common-mode extends to V−, enabling true single-supply operation. |
| 5 | NIC | Not internally connected - must be left floating or grounded per layout best practice. |
| 6 | NIC | Not internally connected - no internal connection; avoid routing signals here. |
| 7 | V+ | Positive supply terminal; powers internal circuitry and sets output swing ceiling. |
| 8 | DISABLE | Active-low shutdown control; pulls supply current to 50 µA (typical) when logic low. |
Key Features
| Feature | Design Value |
|---|---|
| JFET input stage | Enables ±10 pA max input bias current and 10¹³ Ω input resistance - critical for photodiode and piezoelectric sensor interfacing. |
| Rail-to-rail output | Swings within 50 mV of rails at 1 mA load - maximizes dynamic range in low-voltage 5 V systems. |
| EMI filtering | 90 dB rejection at 1 GHz/2.4 GHz - prevents RF rectification artifacts in medical or industrial IoT front-ends. |
| Shutdown mode | Reduces quiescent current to 50 µA (typical) - extends battery life in portable instrumentation. |
| Extended temperature range | Specified from −40°C to +125°C - qualified for under-hood automotive and industrial control applications. |
Applications
| Photodiode Transimpedance Amplifier | High-Voltage Sensor Interface |
|---|---|
|
Use Scenario: Converting weak photocurrent (pA–nA) from a reverse-biased photodiode into a stable voltage signal. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and low voltage noise (12.5 nV/√Hz @ 1 kHz). Use Value: Minimizes dark current error and Johnson noise contribution, enabling sub-picoamp resolution in optical sensing. |
Use Scenario: Conditioning high-impedance outputs from strain gauges, RTDs, or capacitive sensors operating at elevated voltages. IC Role / Device Role / Timing Role: Single-supply precision buffer and gain stage with input range extending to V− and rail-to-rail output. Use Value: Eliminates level-shifting circuitry and supports direct interface to 24 V industrial analog inputs. |
| ADC Driver for SAR Converters | Precision Active Filter Stage |
|
Use Scenario: Driving the switched-capacitor input of a 16-bit+ successive approximation register (SAR) ADC. IC Role / Device Role / Timing Role: Fast-settling, low-distortion driver with 2 µs settling to 0.01% and THD+N = 0.00035% @ 1 kHz. Use Value: Prevents conversion errors due to incomplete settling or harmonic distortion, preserving ENOB in high-resolution data acquisition. |
Use Scenario: Implementing low-pass, high-pass, or band-pass filters in measurement front-ends where DC accuracy and phase linearity matter. IC Role / Device Role / Timing Role: Low-drift, low-noise op amp in Sallen-Key or multiple-feedback topologies. Use Value: Maintains filter cutoff stability over temperature (±1 µV/°C offset drift) and avoids passband ripple from CMRR degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA140AIDBVR | Lower input bias current (±0.5 pA typ), higher GBP (11 MHz), but no shutdown pin and only SOIC/SOT-23 packaging. | Better for ultra-high-Z sources (>10 GΩ); lacks disable function needed in power-gated systems. | Select OPA140AIDBVR when lowest possible input current dominates; choose ADA4622-1BRZ-RL when shutdown capability and MSOP thermal performance are required. |
| AD8610ARMZ-REEL | Higher supply current (2.3 mA), lower GBP (25 MHz), no EMI filtering, and no shutdown - but superior offset drift (±0.2 µV/°C). | Preferred in wide-bandwidth, low-drift lab equipment; unsuitable for battery-powered or RF-noisy environments. | Select AD8610ARMZ-REEL for metrology-grade DC stability; retain ADA4622-1BRZ-RL for mixed-signal industrial designs needing EMI resilience and low IQ. |
Compared with OPA140AIDBVR and AD8610ARMZ-REEL, ADA4622-1BRZ-RL uniquely balances ultra-low input bias current, integrated EMI rejection, active shutdown, and MSOP thermal efficiency - making it the optimal choice for space-constrained, noise-immune, and power-aware precision analog signal chains.
Availability
ADA4622-1BRZ-RL is available at Aetrix Electronics and suitable for photodiode interfaces, SAR ADC drivers, and precision active filters requiring stable component supply across industrial, test & measurement, and medical device programs.
Supply support for ADA4622-1BRZ-RL 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 as a next-generation upgrade to the AD820/AD822 series, targeting precision, low-noise, single-supply applications where input bias current, EMI immunity, and rail-to-rail output are critical - especially in sensor signal conditioning and data acquisition systems.
FAQ
What is the maximum supply voltage rating for ADA4622-1BRZ-RL?
The ADA4622-1BRZ-RL has an absolute maximum supply voltage rating of 36 V (V+ to V−), with recommended operating range from 5 V to 30 V. Operation beyond 30 V is not characterized and may compromise long-term reliability or parametric performance. The device is fully specified at ±15 V, ±5 V, and +5 V supplies per the Rev. F datasheet.
Does ADA4622-1BRZ-RL support true single-supply operation with input down to ground?
Yes. The ADA4622-1BRZ-RL features an input voltage range that includes the negative supply rail (V−), allowing operation with V− = 0 V (ground) and V+ = 5 V. Its input common-mode range extends to V− − 0.2 V, enabling direct interface to ground-referenced sensors without level-shifting circuitry.
What is the function of Pin 8 (DISABLE) on ADA4622-1BRZ-RL?
Pin 8 is the active-low shutdown control. When pulled low (≤0.8 V), it places the ADA4622-1BRZ-RL into low-power state with supply current reduced to 50 µA (typical). When held high (≥2.0 V), normal operation resumes. This pin is not present on the 5-lead SOT-23 variant but is included in the 8-lead MSOP package of ADA4622-1BRZ-RL.
How does the EMI rejection ratio benefit real-world designs using ADA4622-1BRZ-RL?
The ADA4622-1BRZ-RL achieves 90 dB EMIRR at both 1 GHz and 2.4 GHz due to integrated input filtering. This prevents RF rectification at the input stage - eliminating offset shifts, increased noise floor, or spurious outputs commonly observed in proximity to cellular, WiFi, or switching power supply noise sources in industrial or portable equipment.
Is ADA4622-1BRZ-RL pin-compatible with older AD820-series op amps?
No. While the ADA4622-1BRZ-RL is a functional upgrade to the AD820, its 8-lead MSOP package includes a dedicated DISABLE pin (Pin 8) and two NIC pins (Pins 5 and 6), differing from the AD820's 8-lead SOIC pinout. Direct replacement requires PCB layout revision; consult Analog Devices' AN-1249 application note for migration guidance.
ADA4622-1BRZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- 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:
- 400 µV
- Current - Supply:
- 715µA
- 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-SOIC
ADA4622-1BRZ-RL FAQ
1.How can I place an order for ADA4622-1BRZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4622-1BRZ-RL 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 ADA4622-1BRZ-RL reliable?
The price and inventory of ADA4622-1BRZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4622-1BRZ-RL is usually 5 days.
3.What payment methods are accepted for ADA4622-1BRZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4622-1BRZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4622-1BRZ-RL?
ADA4622-1BRZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4622-1BRZ-RL 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 ADA4622-1BRZ-RL?
For technical support, including ADA4622-1BRZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4622-1BRZ-RL requirements.
6.How does Aetrix verify that ADA4622-1BRZ-RL is sourced from the original manufacturer or authorized distributors?
All ADA4622-1BRZ-RL 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 ADA4622-1BRZ-RL meets industry standards.
7.What is the process for return or replacement of ADA4622-1BRZ-RL?
All ADA4622-1BRZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADA4622-1BRZ-RL, 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 ADA4622-1BRZ-RL part is unused and in its original packaging.
Return procedure for ADA4622-1BRZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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