ADA4622-1ARJZ-R2 - 30V JFET Precision Op-Amp SOT-23-5 | ADI
MPN: ADA4622-1ARJZ-R2 ✓ فعالADA4622-1ARJZ-R2 جائزہ
A precision operational amplifier is a high-gain DC-coupled analog building block used to amplify small differential signals while rejecting common-mode noise and offset drift. JFET-input op-amps (JFET op-amp = junction field-effect transistor op-amp) extend the input impedance into the gigaohm-to-teraohm range and reduce input bias current into the picoampere range, which is essential when interfacing with high-impedance sensors, photodiodes, and transimpedance topologies. The ADA4622-1 belongs to the operational amplifier -> amplifier IC -> analog IC -> integrated circuit hierarchy, and is targeted at applications where AD820/AD822 footprints, low IB, and rail-to-rail output are simultaneously required.
Key features include 8 MHz gain-bandwidth product, rail-to-rail output swing, picoampere-level input bias current, low input offset voltage, single-supply operation from 5 V to 30 V (and dual ±5 V / ±15 V), and an extended -40°C to +125°C industrial temperature range. The 5-lead SOT-23 (RJ) package is footprint-compatible with industry-standard single op-amp pinouts, easing migration from older AD820/AD822 designs. The part is specified at +5 V, ±5 V, and ±15 V supply rails, allowing a single BOM line to cover multiple system voltages.
Architecturally, the ADA4622-1 combines a JFET input differential pair with a precision output stage, allowing the high-impedance input behavior of JFETs without sacrificing the output drive strength needed for rail-to-rail swing into low-impedance loads. Designers should still observe standard precision-op-amp layout practices: low-leakage PCB guard rings around high-impedance nodes, minimal stray capacitance on the inverting input, and a stable feedback network chosen to account for the 8 MHz GBW.
Typical applications include photodiode transimpedance amplifiers (TIAs), precision instrumentation front-ends, high-impedance sensor signal conditioning, active filters, analog input stages for data acquisition boards, and pin-compatible upgrades of legacy AD820/AD822 designs. The combination of low IB, RRO, and wide supply range makes the part suitable for both single-supply battery-powered instrumentation and dual-supply industrial signal chains.
When designing with this device, keep high-impedance traces short and consider a PTFE or low-absorption PCB material if leakage budget is critical. Input bias-current cancellation is not required for most uses, but board cleanliness (no flux residue, no moisture) is essential to preserve picoampere-level IB performance.
This page synthesizes distributor pricing, verified cross-reference data from Analog Devices' SOT-23-5 footprint family, and practical PCB/layout guidance that complements (but does not duplicate) the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل ADA4622-1ARJZ-R2 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں ADA4622-1ARJZ-R2 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Amplifier Type, Package, Number of Channels, Manufacturer, Output Type.
ADA4622-1ARJZ-RL
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADA4622-1ARJZ
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AD8628ARTZ-REEL7
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AD8625ARZ-REEL7
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
OPA172IDBVR
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TLV2371IDBVR
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADA4622-1ARJZ-R2 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Manufacturer | Analog Devices Inc. |
| Part Number | ADA4622-1ARJZ-R2 |
| Product Family | ADA4622-1 / ADA4622-2 / ADA4622-4 |
| Amplifier Type | JFET Precision Operational Amplifier |
| Number of Channels | 1 (single) |
| آؤٹ پٹ کی قسم | Rail-to-Rail (RRO) |
| Gain Bandwidth Product (GBP) | 8 MHz |
| Supply Voltage - Single | 5 V to 30 V |
| Supply Voltage - Dual | ±5 V, ±15 V |
| Input Bias Current | Low (picoampere class, see datasheet) |
| آپریٹنگ درجہ حرارت | -40°C to +125°C (extended industrial) |
| پیکیج / کیس | 5-pin SOT-23 (RJ-5) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Packaging | Tape & Reel (R2 = 7" reel, 250 pcs) |
| RoHS | Compliant (per DigiKey listing) |
| Legacy Replacement | Next-generation AD820 / AD822 |
ADA4622-1ARJZ-R2 پن کنفیگریشن
| پن 1 | OUT — Amplifier output (rail-to-rail) |
| پن 2 | V- — Negative supply (ground for single-supply operation) |
| پن 3 | +IN — Non-inverting input (JFET, high-impedance) |
| پن 4 | V+ — Positive supply (5 V to 30 V) |
| پن 5 | DISABLE / NC — DISABLE input (leave floating for always-on per datasheet) |
عام استعمالات
ADA4622-1ARJZ-R2 کے لیے موزوں ہے 6 ایپلیکیشنs: Photodiode Transimpedance Amplifier (TIA), High-Impedance Sensor Signal Conditioning, Active Filter (Sallen-Key / Multiple-Feedback), Precision Instrumentation Front-End, AD820/AD822 Footprint Upgrade, Battery-Powered Instrumentation.
Photodiode Transimpedance Amplifier (TIA)
The ADA4622-1ARJZ-R2's picoampere-class input bias current and JFET input stage make it ideal for photodiode transimpedance amplifiers in optical receivers, LIDAR front-ends, and CT scanners. The 8 MHz GBP supports multi-MHz signal bandwidths needed for high-speed photodiodes, while rail-to-rail output maximizes dynamic range on low-voltage single supplies. Placed in the standard inverting TIA topology with a feedback resistor and bias network, the part delivers low noise and low DC error; designers should add a feedback capacitor for stability and keep the inverting-input trace short and guarded.
تجویز کردہ
High-Impedance Sensor Signal Conditioning
For pH probes, ionization chambers, and other high-impedance sensors, the ADA4622-1ARJZ-R2's JFET input stage (gigaohm-level input impedance, picoampere bias current) preserves small sensor signals that would otherwise be loaded by inferior op-amp inputs. The 5 V to 30 V supply range supports both battery-powered field instruments and industrial 24 V loops. Place the part on a low-leakage PCB with guard rings around the +IN pin and avoid flux residue to preserve IB performance.
تجویز کردہ
Active Filter (Sallen-Key / Multiple-Feedback)
The ADA4622-1ARJZ-R2's 8 MHz GBP and rail-to-rail output suit it for Sallen-Key and multiple-feedback active filters in audio, industrial, and instrumentation signal chains. Designers can build 2nd-order low-pass, high-pass, and band-pass filters up to several hundred kHz with low distortion. The single-supply 5 V to 30 V operation allows the same filter card to run from a battery, USB, or industrial rail. Choose resistor/capacitor values for stable Q and add a feedback capacitor for unity-gain stability if needed.
تجویز کردہ
Precision Instrumentation Front-End
As an input buffer for data acquisition boards, the ADA4622-1ARJZ-R2 provides low offset and low bias current to preserve the accuracy of downstream 16- to 24-bit ADCs. The rail-to-rail output maximizes input range on single 5 V or ±5 V supplies, while the 8 MHz GBP ensures settling for multiplexed-channel systems. Drive the ADC directly or follow with an anti-alias RC network; place the part close to the ADC input to minimize leakage and noise pickup.
تجویز کردہ
AD820/AD822 Footprint Upgrade
The ADA4622-1 is documented by Analog Devices as a next-generation drop-in upgrade for legacy AD820 and AD822 single-supply op-amps in standard single-channel pinouts. Designers can drop the ADA4622-1ARJZ-R2 into existing AD820ART/AD822ART footprints (SOT-23-5) and gain 8 MHz GBP (vs AD820's ~1 MHz), lower bias current, and rail-to-rail output, with minimal PCB changes. Verify the DISABLE/NC pin behavior and feedback network stability for the higher bandwidth.
تجویز کردہ
Battery-Powered Instrumentation
For battery-powered instrumentation such as handheld multimeters, portable medical monitors, and field data loggers, the ADA4622-1ARJZ-R2's single-supply 5 V operation and rail-to-rail output maximize dynamic range on a lithium-cell stack. The JFET input stage draws picoampere-level bias current, minimizing load on the battery while preserving measurement accuracy. Add a low-quiescent LDO upstream and disable unused sections via the DISABLE pin for further power savings.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ADA4622-1ARJZ-R2 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ADA4622-1ARJZ-RL | ADA4622-1ARJZ | AD8628ARTZ-REEL7 | OPA172IDBVR | TLV2371IDBVR |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments |
| Package | SOT-23-5 (RJ-5) | SOT-23-5 (RJ-5) - same | SOT-23-5 (RJ-5) - same | SOT-23-5 - same | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same |
| Channels | 1 (single) | 1 | 1 | 1 | 1 | 1 |
| Gain Bandwidth Product | 8 MHz | 8 MHz | 8 MHz | ~2 MHz | ~10 MHz | ~3 MHz |
| Supply Voltage Range | 5 V to 30 V (single), ±15 V (dual) | 5 V to 30 V | 5 V to 30 V | 5 V to 18 V | 4.5 V to 36 V | 2.7 V to 16 V |
| Output Type | Rail-to-Rail (RRO) | RRO | RRO | RRO | RRO | RRIO |
| Input Stage | JFET | JFET | JFET | CMOS chopper | CMOS | CMOS |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| Approx. Price @ 1000 pcs | $2.62 | ~$2.50 | ~$2.70 | ~$3.20 | ~$1.40 | ~$0.90 |
اہم امتیازی خصوصیات
- Drop-in next-generation AD820/AD822 replacement in SOT-23-5 (بمقابلہAD820ARTZ-REEL7 (legacy AD820 in SOT-23-5))
- Higher GBP vs chopper-stabilized alternatives in same footprint (بمقابلہAD8628ARTZ-REEL7)
- Wider supply range than competing precision op-amps (بمقابلہTLV2371IDBVR (TI))
ڈیزائن نوٹس
Estimated: For a SOT-23-5 op-amp carrying only picoampere-level input bias current, leakage paths on the +IN node can easily exceed the op-amp's own IB. Route the +IN trace on the top layer with a guard ring tied to V- (or ground for single supply) on the opposite side, keep the trace short, and avoid placing noisy digital or switching traces within 2 mm. Standard FR-4 with no-clean flux is acceptable for most designs, but if IB budget is below ~50 pA, switch to a low-absorption PCB material (PTFE, Rogers) and clean the board with isopropanol after soldering.
Estimated: The SOT-23-5 has a typical theta_JA of ~200-220 °C/W on a 1 oz copper 1-square-inch JEDEC test board. At 30 V supply and a 10 mA load into a 2 kΩ load (worst-case DC dissipation inside the part is small, ~50 mW), self-heating is negligible. However, in high-voltage designs where the output swings rail-to-rail into a heavy load, monitor the die temperature rise; reduce dissipation by lowering supply rails where possible or by sourcing less output current.
Per the Analog Devices datasheet, the ADA4622-1 has a DISABLE/NC pin (pin 5) on the SOT-23-5. Leaving the pin floating enables the amplifier; tying it to V- (or ground for single supply) disables it. Designers migrating from AD820/AD822 SOT-23-5 layouts must verify pin 5 is left open or properly driven - a hard tie to V+ may cause unintended shutdown. Also, the 8 MHz GBP is significantly higher than AD820/AD822 (~1 MHz); revisit the feedback network for stability, especially when driving capacitive loads >100 pF.
Estimated: With 8 MHz GBP and JFET input, the ADA4622-1 can oscillate if the feedback network adds phase lag near the unity-gain crossover. For unity-gain buffers, add a small feedback capacitor (a few pF) between OUT and -IN to compensate for input capacitance. When driving long PCB traces or capacitive loads, isolate the capacitive load with a series resistor (10-100 Ω) at the output. Avoid running the +IN trace parallel to switching power or digital clocks to minimize coupled noise.
تعمیل کی معلومات
RoHS compliant per DigiKey listing. Lead-free reflow profile per JEDEC J-STD-020. AEC-Q100 status not specifically listed in the verified web data; the part is graded for extended industrial (-40°C to +125°C) but not automotive-qualified unless explicitly ordered as an automotive-grade variant.
