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Analog Devices Inc. AD827JN
- Part No.:
- AD827JN
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AD827JN.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,316
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Product details
Overview
AD827JN from Analog Devices is a dual high-speed, low-power voltage-feedback operational amplifier designed for video line driving, data acquisition buffering, and active filter stages. It delivers 50 MHz unity-gain bandwidth, 300 V/µs slew rate (±15 V), 120 ns settling time to 0.1%, and drives 75 Ω reverse-terminated coaxial cables with 0.04% differential gain error at 4.4 MHz.
For engineers reviewing the AD827JN datasheet, AD827JN pinout, AD827JN application, or AD827JN equivalent, key selection considerations include its ±5 V to ±15 V dual-supply operation, 10 mA total quiescent current, 2 mV max input offset voltage, and compatibility with unlimited capacitive loads in high-speed analog signal paths.
Technical Context
The AD827JN employs a voltage-feedback architecture optimized for stability at unity gain, achieving 50° phase margin into 1 kΩ with 10 pF load. Its open-loop gain of 3.5 V/mV into 500 Ω supports precise closed-loop gain accuracy in fast-settling configurations.
Input stage uses bipolar transistors with 300 kΩ input resistance and 1.5 pF input capacitance, enabling wide common-mode range (±13.4 V at ±15 V supplies) and low 15 nV/√Hz input voltage noise - critical for preserving SNR in video and ADC/DAC interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 50 MHz at ±15 V supply - enables stable amplification of signals up to video baseband without peaking. |
| Slew Rate | 300 V/µs at ±15 V, RL = 1 kΩ - supports full-scale 20 Vpp output at 4.7 MHz without distortion. |
| Settling Time | 120 ns to 0.1% for ±5 V step - meets timing budget for 8–10-bit ADC input buffering at >1 MSPS rates. |
| Input Offset Voltage | 2 mV max at +25°C, ±5 V - ensures <0.1% gain error in precision DC-coupled gain stages. |
| Differential Gain Error | 0.04% at 4.4 MHz, ±15 V - satisfies NTSC/PAL broadcast-grade video fidelity requirements. |
| Quiescent Current | 10.5 mA typical at ±15 V - allows dual-channel high-speed performance within 150 mW power envelope. |
| Common-Mode Rejection | 80 dB min - suppresses supply noise coupling in single-supply-derived rails or noisy industrial environments. |
Pinout & Package
AD827JN is housed in an 8-lead plastic dual-in-line package (PDIP, N-8) with 0.300″ wide body and through-hole mounting. Pin 1 is identified by a notch or dot; substrate tied to V+ per metallization diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node for feedback network connection; requires matched impedance to non-inverting input to minimize bias-current-induced offset. |
| 2 | Non-Inverting Input (Amplifier A) | DC-coupled input path; common-mode range extends to ±13.4 V at ±15 V supplies. |
| 3 | Output (Amplifier A) | Capable of ±12.2 V swing into 500 Ω at ±15 V; drives 75 Ω coax with back-termination resistor without instability. |
| 4 | V– | Negative supply rail; must be decoupled with 0.1 µF ceramic capacitor near pin to suppress high-frequency PSRR degradation. |
| 5 | V+ | Positive supply rail; substrate connection point; requires low-inductance bypassing to maintain 50 MHz bandwidth integrity. |
| 6 | Output (Amplifier B) | Independent output stage with same drive capability as Pin 3; usable for dual-channel video or interleaved sampling systems. |
| 7 | Non-Inverting Input (Amplifier B) | Matches Pin 2 characteristics; enables matched dual-path signal conditioning with <0.4 mV offset matching between channels. |
| 8 | Inverting Input (Amplifier B) | Matches Pin 1 layout sensitivity; routing symmetry critical to preserve crosstalk <85 dB at 5 MHz between amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable operation | Guaranteed stable with no external compensation across all gains - eliminates risk of oscillation in follower or gain-of-1 video drivers. |
| Unlimited capacitive load drive | Stable into any CL without series isolation resistor - simplifies PCB layout for long trace or cable-driven outputs. |
| 75 Ω reverse-terminated cable drive | Delivers 0.04% differential gain / 0.19° differential phase at 4.4 MHz - meets broadcast video spec without external equalization. |
| Low input voltage noise | 15 nV/√Hz at 10 kHz - preserves dynamic range in front-end amplification of low-level sensor or DAC signals. |
| Matched dual amplifier pair | 0.4 mV max input offset voltage matching - enables accurate differential signal processing and multichannel synchronization. |
Applications
| Video Line Driver | ADC Input Buffer |
|---|---|
|
Use Scenario: Driving composite video signals over 75 Ω coaxial cable in CCTV, broadcast equipment, or medical imaging displays. IC Role / Device Role / Timing Role: Unity-gain voltage follower providing low-output-impedance drive while maintaining color fidelity and minimal group delay. Use Value: Eliminates need for external termination networks or post-amplifier equalization due to guaranteed 0.04% differential gain at 4.4 MHz. |
Use Scenario: Buffering analog inputs to 8-bit or 10-bit high-speed successive-approximation ADCs operating at 1–5 MSPS. IC Role / Device Role / Timing Role: Fast-settling input driver ensuring full-scale step settles to 0.1% within 120 ns before ADC conversion window closes. Use Value: Enables accurate digitization of rapidly changing signals such as motor control feedback or ultrasound echo returns. |
| Active Filter Stage | Instrumentation Amplifier Core |
|
Use Scenario: Implementing multi-stage Sallen-Key or MFB bandpass filters in spectrum analyzers or communication receivers. IC Role / Device Role / Timing Role: High-bandwidth gain block in filter feedback path, maintaining phase linearity and passband flatness up to 50 MHz. Use Value: Supports filter Q-factors >10 without peaking or gain droop, thanks to 50 MHz GBW and 50° phase margin. |
Use Scenario: Building three-op-amp instrumentation amplifiers for precision sensor signal extraction in industrial PLCs or test equipment. IC Role / Device Role / Timing Role: Dual amplifier providing matched gain and common-mode rejection in both input buffer and output stage. Use Value: Achieves >100 dB CMRR in final design when combined with AD847, leveraging AD827JN's 0.4 mV offset matching between channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6624MA/NOPB | Higher 1.5 GHz GBW but higher 12.5 mA supply current; not unity-gain stable - requires minimum gain ≥5. | Not suitable for video followers or unity-gain buffers; better for high-gain IF amplifiers or RF gain blocks. | Select LMH6624MA/NOPB only when gain ≥5 is acceptable and >1 GHz bandwidth is required; AD827JN remains preferred for unity-gain video and data acquisition. |
| THS4031CD | Lower 100 MHz GBW but lower 7.5 mA supply current; unity-gain stable with 350 V/µs slew rate and 0.02% differential gain at 4.4 MHz. | Better differential gain spec but narrower bandwidth limits use in >10 MHz active filters or fast-settling ADC buffers. | Choose THS4031CD where ultra-low video distortion is prioritized over bandwidth; AD827JN offers superior balance of speed, power, and video fidelity. |
Compared with LMH6624MA/NOPB and THS4031CD, AD827JN uniquely combines unity-gain stability, 50 MHz bandwidth, sub-0.05% video distortion, and 10.5 mA quiescent current - making it the optimal choice for cost-sensitive, high-fidelity dual-channel analog signal chains requiring no external compensation.
Availability
AD827JN is available at Aetrix Electronics and suitable for video signal conditioning, high-speed data acquisition buffering, and multistage active filter design requiring stable component supply across industrial, broadcast, and test equipment programs.
Supply support for AD827JN 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and signal chain applications.
The AD827 belongs to Analog Devices' high-speed op amp product line, engineered for demanding analog signal conditioning tasks including video, instrumentation, and data conversion interfaces where speed, fidelity, and power efficiency are jointly critical.
FAQ
What is the maximum supply voltage rating for AD827JN?
The AD827JN has an absolute maximum supply voltage rating of ±18 V. Operation beyond this limit risks permanent damage. The device is fully specified for continuous operation from ±4.5 V to ±18 V, with optimal video performance achieved at ±15 V supplies per the datasheet's differential gain and phase measurements. Always observe derating curves for thermal management in plastic DIP packages.
Does AD827JN require external compensation for unity-gain stability?
No, AD827JN is internally compensated for unity-gain stability across its full operating temperature range (0°C to +70°C). The datasheet confirms stable 50° phase margin into 1 kΩ with 10 pF load at ±15 V, eliminating need for external compensation components. This makes AD827JN ideal for video follower circuits and other gain-of-1 configurations without layout or tuning complexity.
Can AD827JN drive a 50 Ω terminated load directly?
Yes, AD827JN can drive a 50 Ω reverse-terminated load directly, delivering up to ±1 V output swing with <0.04% differential gain error at 4.4 MHz when operated from ±15 V supplies. Its 30 mA short-circuit current limit and 300 V/µs slew rate ensure robust drive capability, though output voltage swing reduces to ±2.5 V at ±5 V supplies into 150 Ω - verify load and supply conditions against the Output Voltage Swing table in the AD827JN datasheet.
What is the input offset voltage matching between the two amplifiers in AD827JN?
The AD827JN guarantees maximum input offset voltage matching of 0.4 mV between its two amplifiers at ±5 V supplies and +25°C. This tight matching supports precision differential signal processing and dual-channel instrumentation amplifier topologies where channel-to-channel tracking is essential. Matching degrades slightly over temperature but remains well-controlled per the Matching Characteristics section of the datasheet.
Is AD827JN suitable for driving ADC inputs in a 10-bit, 2 MSPS data acquisition system?
Yes, AD827JN is suitable for driving 10-bit ADC inputs at 2 MSPS. Its 120 ns settling time to 0.1% ensures full-scale transitions settle well before the next sample window, and its 50 MHz bandwidth preserves signal integrity up to Nyquist (1 MHz). Combined with 2 mV max input offset and 80 dB CMRR, AD827JN maintains effective resolution and noise immunity in real-world acquisition systems.
AD827JN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 300V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3.3 µA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 10mA
- Current - Output / Channel:
- 32 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AD827JN FAQ
1.How can I place an order for AD827JN through Aetrix?
Please submit a Request for Quotation (RFQ) for AD827JN 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 AD827JN reliable?
The price and inventory of AD827JN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD827JN is usually 5 days.
3.What payment methods are accepted for AD827JN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD827JN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD827JN?
AD827JN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD827JN 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 AD827JN?
For technical support, including AD827JN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD827JN requirements.
6.How does Aetrix verify that AD827JN is sourced from the original manufacturer or authorized distributors?
All AD827JN 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 AD827JN meets industry standards.
7.What is the process for return or replacement of AD827JN?
All AD827JN units undergo pre-shipment inspection (PSI). If there is an issue with AD827JN, 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 AD827JN part is unused and in its original packaging.
Return procedure for AD827JN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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