My Inquiry
My Account
Analog Devices Inc. AD8620ARZ-REEL7
- Part No.:
- AD8620ARZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8620ARZ-REEL7.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,167
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8620ARZ-REEL7 from Analog Devices is a dual-channel, JFET-input operational amplifier optimized for precision instrumentation and high-speed signal conditioning. It delivers 25 MHz gain bandwidth, 50 V/μs slew rate, 6 nV/√Hz voltage noise at 1 kHz, ≤150 μV max offset voltage (B-grade), and operates from ±5 V to ±13 V supplies. It drives ≥1000 pF capacitive loads stably in unity-gain noninverting configuration and is used in photodiode amplifiers and fast precision integrators.
For engineers reviewing the AD8620ARZ-REEL7 datasheet, AD8620ARZ-REEL7 pinout, AD8620ARZ-REEL7 application, or AD8620ARZ-REEL7 equivalent, key selection criteria include input bias current ≤10 pA (25°C), channel separation ≥137 dB at 10 kHz, output swing within 1.2 V of rails at 1 kΩ load, and guaranteed operation across −40°C to +125°C.
Technical Context
The AD8620ARZ-REEL7 uses Analog Devices' XFCB dielectrically isolated process with N-channel JFET inputs and thin-film resistor trimming, enabling ultralow offset drift (≤1.5 μV/°C for B-grade) and stable performance over temperature. Its architecture eliminates phase reversal when inputs exceed common-mode range and supports direct driving of ADC inputs and DAC buffers without external compensation.
It achieves 0.01% settling in ≤600 ns for a 10 V step (±13 V supply), maintains >90 dB CMRR up to 100 kHz, and exhibits symmetrical ±50 V/μs slew rate in both inverting and noninverting unity-gain configurations - a critical advantage over competing JFET op amps where slew asymmetry degrades pulse fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 25 MHz - enables stable closed-loop operation up to 100 kHz with G = +100, suitable for anti-aliasing and reconstruction filters. |
| Slew Rate | 50 V/μs (typ, ±13 V) - supports clean 10 Vpp signals up to ~800 kHz full-power bandwidth with <1% distortion. |
| Input Offset Voltage | ≤150 μV (AD8620B, 25°C) - reduces DC error in precision sensor front-ends and low-level signal amplification. |
| Input Bias Current | ≤10 pA (25°C), ≤2.5 nA (−40°C to +125°C) - preserves signal integrity in high-impedance photodiode and piezoelectric sensor interfaces. |
| Voltage Noise Density | 6 nV/√Hz at 1 kHz - ensures minimal added noise in low-frequency precision measurement chains. |
| Channel Separation | 137 dB at 10 kHz - prevents crosstalk in dual-channel instrumentation such as differential sensor pairs or I/Q signal paths. |
| Supply Range | ±5 V to ±13 V - accommodates legacy industrial rails and modern low-noise analog supply architectures. |
Pinout & Package
AD8620ARZ-REEL7 is housed in an 8-lead narrow SOIC_N (R-8) package with standard JEDEC outline and surface-mount footprint. Thermal resistance θJA = 158°C/W (board-mounted).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Inverting output of Channel A - directly drives downstream stages or feedback networks without level-shifting. |
| 2 | –INA | Inverting input of Channel A - accepts feedback or signal inversion; high impedance (>1012 Ω) minimizes loading on source. |
| 3 | +INA | Noninverting input of Channel A - connects to high-Z sensors; input capacitance is 8 pF differential, 15 pF common-mode. |
| 4 | V– | Negative supply rail - must be decoupled locally with ≥0.1 μF ceramic capacitor to suppress PSRR degradation above 100 kHz. |
| 5 | V+ | Positive supply rail - shared by both channels; PSRR >100 dB ensures immunity to supply ripple up to 100 kHz. |
| 6 | OUTB | Output of Channel B - independent output path enables dual-path signal processing without inter-channel coupling. |
| 7 | –INB | Inverting input of Channel B - electrically isolated from Channel A; channel separation ≥137 dB prevents signal bleed. |
| 8 | +INB | Noninverting input of Channel B - identical electrical characteristics to +INA; supports matched dual-sensor configurations. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Inputs tolerate voltages beyond supply rails (±VS) without polarity inversion - essential for fault-tolerant sensor monitoring and comparator-like behavior. |
| Capacitive load drive | Stable with ≥1000 pF in unity-gain noninverting mode - eliminates need for isolation resistors when driving ADC sample-and-hold inputs or long cables. |
| Low input bias current over temperature | ≤2.5 nA across −40°C to +125°C - maintains accuracy in uncooled industrial enclosures and automotive under-hood environments. |
| High output drive | ±45 mA output current (±13 V, VOUT > ±10 V) - drives 600 Ω loads directly, reducing need for external buffers in audio and test equipment. |
| Low 0.1 Hz to 10 Hz noise | 1.8 μV p-p - critical for DC-coupled strain gauge, thermopile, and medical bio-signal amplification where low-frequency drift dominates error budget. |
Applications
| Photodiode Amplifier | ATE Signal Conditioning |
|---|---|
Use Scenario: High-gain transimpedance amplification of low-current photodiode outputs in optical power meters and spectrophotometers. IC Role / Device Role / Timing Role: Primary transimpedance amplifier with ultra-low input bias current and low voltage noise to maximize SNR at sub-nA photocurrent levels. Use Value: Enables resolution of <10 pA photocurrents with <0.5% linearity error over 4-decade dynamic range due to ≤10 pA IB and 6 nV/√Hz en. |
Use Scenario: Precision gain/offset adjustment and fast settling amplification in automated test equipment stimulus and measurement channels. IC Role / Device Role / Timing Role: Dual-channel buffer and integrator core supporting simultaneous DUT stimulus and response capture with <600 ns 0.01% settling. Use Value: Reduces test cycle time by 35% vs. legacy op amps through 50 V/μs slew rate and 25 MHz GBP, enabling faster waveform generation and digitization. |
| High-Performance Audio Buffer | Medical Imaging Front-End |
Use Scenario: Low-distortion line-level buffering and active filtering in studio-grade audio converters and monitor controllers. IC Role / Device Role / Timing Role: Output driver and filter stage with THD+N <0.0006% at 20 kHz, leveraging low noise and high PSRR to preserve dynamic range. Use Value: Achieves >120 dB SNR in 24-bit DAC output stages by contributing only 6 nV/√Hz noise and rejecting supply ripple >100 dB up to 100 kHz. |
Use Scenario: Low-noise, low-drift amplification of weak signals from ultrasound transducers and MRI gradient coils. IC Role / Device Role / Timing Role: First-stage preamplifier with matched dual channels for differential signal acquisition and common-mode rejection. Use Value: Delivers 137 dB channel separation at 10 kHz and ≤1.5 μV/°C offset drift, ensuring artifact-free image reconstruction across operating temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JFET op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA211AIDR | Bipolar input; lower 1.1 nV/√Hz noise but higher 1.5 nA IB; 45 MHz GBP, 27 V/μs SR. | Better for low-noise, low-THD audio below 100 kHz; unsuitable for >100 MΩ sensor sources due to IB. | Select OPA211AIDR when voltage noise is primary constraint and source impedance <100 kΩ; avoid for photodiode or piezo sensors. |
| LT1792CS8#PBF | JFET input; 12 MHz GBP, 15 V/μs SR, 10 nV/√Hz noise, 25 pA IB; specified only to +85°C. | Lower bandwidth and slew limit use in fast integrators or wideband filters; narrower temp range restricts industrial deployment. | Choose LT1792CS8#PBF for cost-sensitive, lower-speed instrumentation where extended temperature range is not required. |
Compared with OPA211AIDR and LT1792CS8#PBF, AD8620ARZ-REEL7 uniquely balances ultralow input bias current (<10 pA), high slew rate (50 V/μs), and full −40°C to +125°C qualification - making it the only option qualified for dual-channel precision amplification in uncooled industrial and medical systems requiring both speed and DC accuracy.
Availability
AD8620ARZ-REEL7 is available at Aetrix Electronics and suitable for photodiode amplifiers, ATE signal conditioning, and high-performance audio requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD8620ARZ-REEL7 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, headquartered in Norwood, MA.
The AD8620ARZ-REEL7 belongs to the AD8610/AD8620 family of precision JFET op amps, designed specifically for applications demanding ultralow input bias current, low noise, and wide bandwidth in harsh thermal environments.
FAQ
What is the maximum capacitive load the AD8620ARZ-REEL7 can drive stably in unity-gain noninverting configuration?
The AD8620ARZ-REEL7 is stable with capacitive loads exceeding 1000 pF in unity-gain noninverting configuration, as confirmed in the datasheet's "Driving Large Capacitive Loads" section. At ±5 V supply, it safely drives up to 10 nF; however, bandwidth reduction and increased overshoot occur proportionally with load capacitance. For optimal stability with >1 nF loads, maintain proper PCB layout with short traces and local supply decoupling.
Does the AD8620ARZ-REEL7 support operation at ±13 V supply, and what are the output voltage limits under that condition?
Yes, the AD8620ARZ-REEL7 is fully specified for ±5 V to ±13 V dual-supply operation. At ±13 V and −40°C to +125°C, the output voltage swing is guaranteed to be ≥±11.75 V into a 1 kΩ load - meaning it delivers >11.75 V above V– and <−11.75 V below V+, maximizing dynamic range for high-resolution data acquisition systems.
How does the AD8620ARZ-REEL7 handle input overvoltage conditions beyond the supply rails?
The AD8620ARZ-REEL7 features robust input overvoltage tolerance: its JFET inputs withstand differential voltages equal to the full supply voltage without damage or phase reversal. Unlike bipolar op amps, it requires no external clamp diodes, eliminating distortion in precision rectifier and comparator circuits. Input currents remain safe below 5 mA even when driven >±1 V beyond rails, provided series limiting resistors are used for sustained overvoltage events.
Is the AD8620ARZ-REEL7 pin-compatible with other op amps in the same SOIC-8 package?
No, the AD8620ARZ-REEL7 has a proprietary dual-amplifier pinout (OUTA, –INA, +INA, V–, V+, OUTB, –INB, +INB) that differs from industry-standard SOIC-8 op amp layouts like the LM358 or TL072. Direct replacement requires PCB redesign. Always verify pin mapping against Figure 2 in the AD8610/AD8620 Rev. F datasheet before substitution.
What is the guaranteed input offset voltage specification for the AD8620ARZ-REEL7 across temperature?
The AD8620ARZ-REEL7 is offered in A- and B-grade versions. The B-grade (indicated by part number suffix 'B') guarantees ≤150 μV max input offset voltage at 25°C and ≤300 μV max across −40°C to +125°C. Offset voltage drift is ≤1.5 μV/°C over the full temperature range, ensuring predictable DC error accumulation in precision integrators and sensor signal chains.
AD8620ARZ-REEL7 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:
- 2
- Output Type:
- -
- Slew Rate:
- 60V/µs
- Gain Bandwidth Product:
- 25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 85 µV
- Current - Supply:
- 3mA (x2 Channels)
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 26 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8620ARZ-REEL7 FAQ
1.How can I place an order for AD8620ARZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8620ARZ-REEL7 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 AD8620ARZ-REEL7 reliable?
The price and inventory of AD8620ARZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8620ARZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8620ARZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8620ARZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8620ARZ-REEL7?
AD8620ARZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8620ARZ-REEL7 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 AD8620ARZ-REEL7?
For technical support, including AD8620ARZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8620ARZ-REEL7 requirements.
6.How does Aetrix verify that AD8620ARZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8620ARZ-REEL7 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 AD8620ARZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8620ARZ-REEL7?
All AD8620ARZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8620ARZ-REEL7, 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 AD8620ARZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8620ARZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8620ARZ-REEL7 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
