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Analog Devices Inc. AD841JNZ
- Part No.:
- AD841JNZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
AD841JNZ.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,474
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Product details
Overview
AD841JNZ from Analog Devices is a unity-gain stable, wideband operational amplifier optimized for high-speed signal conditioning and precision data acquisition. It delivers 40 MHz unity-gain bandwidth, 300 V/µs slew rate, 110 ns settling time to 0.01%, ±10 V output swing into 500 Ω, and 1 mV max input offset voltage - enabling 12-bit accuracy in fast DAC/ADC buffer applications.
For engineers reviewing the AD841JNZ datasheet, AD841JNZ pinout, AD841JNZ application, or AD841JNZ equivalent, key selection criteria include guaranteed 0.01% settling performance at 110 ns, laser-trimmed offset stability, no external compensation requirement, and compatibility with ±5 V to ±18 V dual supplies across 0°C to +70°C industrial operation.
Technical Context
The AD841JNZ employs Analog Devices' junction-isolated complementary bipolar (CB) process, enabling simultaneous dc precision and wideband ac performance unattainable in earlier monolithic op amps. Its thermally balanced layout eliminates long settling tails, ensuring clean 0.01% recovery without post-slew artifacts.
It operates as a fully compensated, unity-gain stable voltage-feedback amplifier with internal offset null pins (Pins 3 & 12), no need for external frequency compensation, and robust overdrive recovery (200 ns negative / 700 ns positive). The device maintains stability across its full temperature range and supports terminated line driving up to 4.7 MHz full-power bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 40 MHz - enables stable closed-loop gain of 1 with flat frequency response up to video and pulse frequencies. |
| Settling Time (0.01%) | 110 ns for 10 V step - ensures 12-bit accuracy in high-speed data acquisition sampling windows. |
| Slew Rate | 300 V/µs - supports ±10 V output swings at 4.7 MHz full-power bandwidth into 500 Ω. |
| Input Offset Voltage | 1 mV maximum - laser wafer trimmed; eliminates need for external nulling in most precision buffer designs. |
| Supply Range | ±5 V to ±18 V - provides design flexibility for industrial signal chains operating from standard dual rails. |
| Output Current | 50 mA minimum - drives low-impedance loads including 50 Ω/75 Ω cables and active filter networks. |
| Input Voltage Noise | 15 nV/√Hz at 1 kHz - preserves SNR in wideband amplification stages preceding ADCs. |
Pinout & Package
AD841JNZ is packaged in a 14-pin plastic dual in-line package (PDIP, N-14), compliant with JEDEC MS-001. The package features through-hole mounting, 0.300-inch body width, and 0.100-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 13, 14 | No Connect (NC) | Internally unconnected; must remain floating - no routing or grounding required. |
| 3, 12 | Balance / Offset Null | Connect external 10 kΩ potentiometer wiper to Pin 3 and ends to Pins 12 & 11 (+VS) to trim input offset voltage. |
| 4 | Inverting Input (–IN) | Differential input node for inverting configurations; requires impedance matching (e.g., RB resistor) to minimize bias current error. |
| 5 | Non-Inverting Input (+IN) | Differential input node for non-inverting configurations; protected by internal ±6 V differential limit. |
| 6 | –VS | Negative supply rail connection; bypass with 2.2 µF + 0.1 µF capacitors placed near pin for high-frequency stability. |
| 10 | +VS | Positive supply rail connection; same bypassing requirement as –VS for low-noise, high-speed operation. |
| 11 | Output | Class-AB output stage capable of ±10 V swing into 500 Ω and 50 mA continuous drive; supports capacitive loads ≤20 pF directly. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability without external compensation | Eliminates design risk and board space for compensation networks - simplifies layout for video, pulse, and buffer circuits. |
| Laser-trimmed input offset voltage (≤1 mV) | Reduces system calibration overhead and enables direct use in 12-bit DAQ front-ends without nulling circuitry. |
| No settling tails after 110 ns (0.01%) | Ensures monotonic convergence in sampled systems - critical for accurate waveform reconstruction and timing-critical triggers. |
| 40 MHz gain-bandwidth product with 300 V/µs slew rate | Supports high-fidelity amplification of fast transients (e.g., video sync pulses, LIDAR returns) without slew-induced distortion. |
| Offset null pins (Pins 3 & 12) + internal balance nodes | Enables fine-tuning in production or field calibration while retaining full 40 MHz bandwidth - unlike external trim solutions. |
Applications
| Video Signal Amplification | Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifying composite video signals (e.g., NTSC/PAL) with minimal phase/gain distortion across 4.4 MHz bandwidth. IC Role / Device Role / Timing Role: Unity-gain buffer and driver stage maintaining <0.03% differential gain and <0.022° differential phase error. Use Value: Preserves color fidelity and sync integrity without requiring external peaking or equalization networks. |
Use Scenario: Buffering outputs of 12-bit DACs in automated test equipment requiring sub-LSB settling before sampling. IC Role / Device Role / Timing Role: High-speed output amplifier delivering 10 V step with 110 ns to 0.01% - meeting 12-bit settling window. Use Value: Enables 10 MSPS+ sampling rates without aperture uncertainty penalty from amplifier tailing. |
| Active Filter Stage | Terminated Line Driver |
|
Use Scenario: Implementing 4th-order Butterworth low-pass filters at 5–10 MHz cutoff in spectrum analyzer IF paths. IC Role / Device Role / Timing Role: Gain stage in multiple-feedback (MFB) or state-variable topologies with >40 dB stopband rejection. Use Value: Maintains filter Q-factor and center frequency accuracy due to high open-loop gain (45 V/mV) and low noise. |
Use Scenario: Driving 50 Ω coaxial cables in high-speed digital instrumentation with minimal reflection-induced jitter. IC Role / Device Role / Timing Role: Unity-gain follower with back-termination (RBT) and load termination (RT) for impedance-matched transmission. Use Value: Delivers clean 4.7 MHz full-power signals with <10 ns rise time and no overshoot - verified per Figure 22/25. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, unity-gain stable op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA637BP | Higher 80 MHz GBW but requires gain ≥5 for stability; 120 V/µs slew rate; 2.5 mV max offset. | Not unity-gain stable - unsuitable for buffer or gain-of-1 video line drivers without redesign. | Select only when closed-loop gain ≥5 is acceptable and higher bandwidth justifies reduced dc precision. |
| LM6171IM | Unity-gain stable; 100 MHz GBW; 3600 V/µs slew; 4 mV max offset; no offset null pins. | Higher speed but greater input offset and no trimming capability - limits 12-bit DC accuracy in DAQ buffers. | Prefer for >10 MHz small-signal applications where offset drift tolerance exceeds 2 mV; avoid where laser-trimmed nulling is required. |
Compared with OPA637BP and LM6171IM, AD841JNZ uniquely combines guaranteed unity-gain stability, 110 ns 0.01% settling, laser-trimmed 1 mV offset, and dedicated null pins - making it the only choice for precision, uncompensated, gain-of-1 signal paths demanding both speed and dc accuracy.
Availability
AD841JNZ is available at Aetrix Electronics and suitable for video signal conditioning, high-speed data acquisition systems, and active filter designs requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for AD841JNZ 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 AD841JNZ belongs to Analog Devices' high-speed precision op amp family, engineered specifically for applications demanding simultaneous wide bandwidth, fast settling, and dc accuracy - such as instrumentation, medical imaging, and automated test equipment.
FAQ
What is the operating temperature range for AD841JNZ?
The AD841JNZ is rated for 0°C to +70°C ambient operation, as specified in the Ordering Guide and Absolute Maximum Ratings table. This J-grade variant is intended for commercial and industrial environments where extended temperature coverage is not required - unlike the S-grade (−55°C to +125°C) versions offered in CERDIP or LCC packages. All electrical specifications in the datasheet's Table 1 are guaranteed within this range.
Does AD841JNZ require external compensation components?
No, AD841JNZ is internally compensated and unity-gain stable - no external capacitors or resistors are needed for stability. Its junction-isolated complementary bipolar process and thermally balanced layout ensure unconditional stability across all gains ≥1, supply voltages (±5 V to ±18 V), and temperatures (0°C to +70°C). This eliminates tuning effort and layout sensitivity common in faster, decompensated op amps.
Can AD841JNZ drive a 50 Ω load directly?
Yes, AD841JNZ can drive a 50 Ω load directly in short-duration or pulsed applications, but sustained ±10 V output into 50 Ω exceeds its 50 mA minimum output current rating (per Table 1). For continuous operation, use a series resistor (e.g., 49.9 Ω) to isolate the cable while maintaining termination - as shown in Figure 33. This preserves signal integrity and avoids thermal overload.
What is the purpose of Pins 3 and 12 on AD841JNZ?
Pins 3 and 12 are offset null terminals that connect to internal balance nodes of the input stage. A 10 kΩ potentiometer wired with its ends to Pin 12 (+VS) and Pin 11 (+VS), and its wiper to Pin 3, allows precise adjustment of input offset voltage down to <0.1 mV. This feature enables final calibration in production or field deployment without modifying the core amplifier circuit.
How does AD841JNZ achieve 110 ns settling to 0.01% without settling tails?
AD841JNZ achieves clean 0.01% settling via its junction-isolated complementary bipolar (CB) process and thermally balanced layout, which minimize transistor isolation capacitance discharge and thermally induced operating point shifts. Unlike many fast op amps, it avoids long exponential recovery tails - verified in Figure 31 - making it reliable for repetitive high-speed sampling where tail-induced errors accumulate.
AD841JNZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 300V/µs
- Gain Bandwidth Product:
- 40 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3.5 µA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 11mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 75°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
AD841JNZ FAQ
1.How can I place an order for AD841JNZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD841JNZ 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 AD841JNZ reliable?
The price and inventory of AD841JNZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD841JNZ is usually 5 days.
3.What payment methods are accepted for AD841JNZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD841JNZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD841JNZ?
AD841JNZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD841JNZ 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 AD841JNZ?
For technical support, including AD841JNZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD841JNZ requirements.
6.How does Aetrix verify that AD841JNZ is sourced from the original manufacturer or authorized distributors?
All AD841JNZ 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 AD841JNZ meets industry standards.
7.What is the process for return or replacement of AD841JNZ?
All AD841JNZ units undergo pre-shipment inspection (PSI). If there is an issue with AD841JNZ, 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 AD841JNZ part is unused and in its original packaging.
Return procedure for AD841JNZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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