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Analog Devices Inc. AD811AR-16-REEL
- Part No.:
- AD811AR-16-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD811AR-16-REEL.pdf
- Description:
- IC AMP CURRENT FEEDBACK 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,743
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Product details
Overview
AD811AR-16-REEL from Analog Devices is a high-speed current-feedback operational amplifier optimized for broadcast-quality video systems. It delivers 120 MHz −3 dB bandwidth at G = +2, 0.01% differential gain / 0.01° differential phase (RL = 150 Ω), and 2500 V/µs slew rate, enabling precise analog video signal conditioning in HDTV line drivers and ADC/DAC buffers.
For engineers reviewing the AD811AR-16-REEL datasheet, AD811AR-16-REEL pinout, AD811AR-16-REEL application, or AD811AR-16-REEL equivalent, this page provides verified technical context, package-specific pin mapping, real-world video system use cases, and two validated alternative op amps with documented functional trade-offs.
Technical Context
The AD811AR-16-REEL implements a current-feedback architecture where closed-loop bandwidth is set by feedback resistor value (e.g., 649 Ω for 120 MHz at G = +2) rather than gain-bandwidth product. Its transresistance input stage enables stable wideband operation across ±4.5 V to ±18 V supplies while maintaining <25 ns settling to 0.1% on a 2 V step.
Designed specifically for 75 Ω video distribution, it achieves 0.1 dB gain flatness to 35 MHz (G = +2) and drives one or two back-terminated coaxial cables without degradation. Differential gain/phase performance is specified at 3.58 MHz with 100 IRE modulated ramp input under ±15 V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 120 MHz at G = +2 (RFB = 649 Ω, VS = ±15 V); enables full HD baseband video amplification without roll-off |
| Slew Rate | 2500 V/µs (VOUT = 20 V p-p); supports fast transient fidelity in pulse-driven video switching |
| Differential Gain / Phase | 0.01% / 0.01° (f = 3.58 MHz, RL = 150 Ω); meets broadcast-grade NTSC/PAL color accuracy requirements |
| Input Voltage Noise | 1.9 nV/√Hz at 1 kHz; preserves SNR in low-level video signal chains prior to ADC sampling |
| Quiescent Current | 16.5 mA (VS = ±15 V); balances high-speed performance with thermal manageability in SOIC_W-16 package |
| Output Swing | ±12 V into high-Z load (VS = ±15 V); delivers full-scale analog video levels with headroom for sync pulses |
| THD | −74 dB at 10 MHz (VOUT = 2 V p-p, G = +2); ensures minimal harmonic distortion in composite video paths |
Pinout & Package
AD811AR-16-REEL is housed in a 16-lead SOIC_W (RW-16) package with exposed pad for thermal enhancement. Pin 1 is marked via notch or dot; pins 1–8 occupy one side, 9–16 the opposite. All NC pins must remain unconnected per datasheet Note 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 7, 8, 9, 10, 11, 13, 16 | No Connect (NC) | Internally unconnected; must be left floating-no routing or grounding permitted |
| 3 | Inverting Input (−IN) | Current-summing node of CFA architecture; sets closed-loop gain with RG resistor |
| 5 | Noninverting Input (+IN) | High-impedance voltage-sensing node (1.5 MΩ); used for unity-gain buffer configurations |
| 6 | Output (OUTPUT) | Low-impedance current-source output capable of ±100 mA; drives 75 Ω loads directly |
| 12 | Positive Supply (+VS) | Accepts +4.5 V to +18 V; requires local 0.1 µF bypass capacitor to ground |
| 14 | Negative Supply (−VS) | Accepts −4.5 V to −18 V; requires local 0.1 µF bypass capacitor to ground |
| 15 | Positive Supply (+VS) | Second +VS connection for improved power rail decoupling in high-frequency layouts |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Maintains >100 MHz bandwidth across gains +1 to +10 via RFB tuning-unlike voltage-feedback op amps |
| Broadcast-grade video linearity | 0.01% differential gain error ensures accurate color saturation reproduction in NTSC/PAL systems |
| High slew rate with low distortion | 2500 V/µs slew + −74 dBc THD at 10 MHz enables clean 1080p/60 video signal buffering |
| Wide supply range support | Operates from ±4.5 V to ±18 V, allowing design reuse across ±5 V embedded systems and ±15 V test equipment |
| Robust capacitive load drive | Stable with ≥100 pF loads using optional series output resistor (e.g., 15 Ω for 500 pF) |
Applications
| HDTV Line Driver | Medical Ultrasound Signal Chain |
|---|---|
Use Scenario: Driving dual back-terminated 75 Ω coaxial cables from a video crosspoint switcher in broadcast studio infrastructure. IC Role / Device Role / Timing Role: Final-stage video buffer providing gain, level-shifting, and cable drive capability with minimal group delay variation. Use Value: 0.01° differential phase error preserves chroma timing alignment across RGB channels at 1080p resolution. |
Use Scenario: Amplifying low-amplitude, high-frequency echo return signals (5–15 MHz) in portable ultrasound beamformers. IC Role / Device Role / Timing Role: Low-noise, wideband intermediate gain stage before ADC sampling at 40+ MSPS. Use Value: 1.9 nV/√Hz input voltage noise maintains >70 dB SNR in weak-signal detection without degrading dynamic range. |
| ADC Input Buffer | Video Keyer Circuit |
Use Scenario: Isolating and driving a 12-bit, 100 MSPS ADC in a digital oscilloscope front-end. IC Role / Device Role / Timing Role: Unity-gain follower minimizing source impedance effects and ensuring <25 ns settling to 0.1% before sample capture. Use Value: 2500 V/µs slew rate prevents aperture uncertainty-induced distortion during fast edge acquisition. |
Use Scenario: Real-time mixing of foreground video (chroma key) with background graphics in live production switchers. IC Role / Device Role / Timing Role: High-fidelity summing amplifier combining multiple video sources with sub-nanosecond skew control. Use Value: 120 MHz bandwidth preserves sharp transitions in alpha-blended edges without softening or ringing artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3201DR | Higher 1.8 GHz GBW but voltage-feedback architecture; 1000 V/µs slew rate; higher 3.5 nV/√Hz noise | Better suited for RF IF amplification than composite video; less optimal for differential gain-critical NTSC | Select when ultra-wideband small-signal gain is prioritized over broadcast video linearity specs |
| LMH6702MA | 1.7 GHz GBW, 3100 V/µs slew, but 3.3 nV/√Hz noise and no guaranteed differential phase spec | Used in test equipment front-ends; lacks published 0.01° differential phase validation at 3.58 MHz | Prefer for high-speed data acquisition where absolute color fidelity is not required |
Compared with AD811AR-16-REEL, THS3201DR offers greater raw bandwidth but sacrifices broadcast-grade differential phase accuracy, while LMH6702MA delivers superior slew rate yet omits verified NTSC compliance metrics-making AD811AR-16-REEL the only choice when both speed and color fidelity are mandatory.
Availability
AD811AR-16-REEL is available at Aetrix Electronics and suitable for HDTV line drivers, medical ultrasound receivers, and high-speed ADC buffer designs requiring stable component supply across long-lifecycle industrial programs.
Supply support for AD811AR-16-REEL 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 AD811 belongs to Analog Devices' precision high-speed op amp product line, engineered specifically for broadcast video, medical imaging, and instrumentation applications demanding simultaneous bandwidth, linearity, and low noise.
FAQ
What is the maximum recommended supply voltage for AD811AR-16-REEL?
The AD811AR-16-REEL supports operating supply voltages from ±4.5 V to ±18 V. Absolute maximum ratings specify ±18 V for standard grades; exceeding this risks permanent damage. For optimal video performance with thermal margin, ±12 V or ±15 V is recommended-verified in the datasheet's differential gain/phase plots and Figure 44–45.
Does AD811AR-16-REEL support single-supply operation?
No, AD811AR-16-REEL is designed exclusively for dual-supply operation (±VS). Its input common-mode range extends to ±VS, and output swing is symmetrical about ground. Single-supply use would violate input/output voltage limits and degrade performance-no characterization data exists for 0 V to +VCC configurations.
How does the AD811AR-16-REEL differ from the AD811JR variant?
The AD811AR-16-REEL is rated for −40°C to +85°C (A grade) in 16-lead SOIC_W packaging, while AD811JR is J-grade (0°C to +70°C) in 8-lead SOIC_N. Electrical specs are identical, but AD811AR-16-REEL supports wider temperature operation and higher power dissipation (θJA = 85°C/W vs. 155°C/W), making it suitable for industrial video equipment.
Can AD811AR-16-REEL drive 50 Ω transmission lines?
Yes-though optimized for 75 Ω video loads, AD811AR-16-REEL delivers ±100 mA output current and can drive 50 Ω loads with appropriate gain-setting resistors. Datasheet Figure 8 shows output swing vs. resistive load down to 10 Ω; for 50 Ω, expect ~±10 V swing at ±15 V supplies with minor bandwidth reduction versus 75 Ω.
What layout practices prevent instability in AD811AR-16-REEL circuits?
To ensure stability, minimize parasitic capacitance at the inverting input and output nodes: use short traces (<1/4") for RFB/RG, isolate signal paths from ground planes with 3/16" clearance, and place 0.1 µF ceramic bypass capacitors within 2 mm of each supply pin. The datasheet explicitly warns that longer feedback traces induce peaking (Figure 18).
AD811AR-16-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Current Feedback
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- 140 MHz
- Slew Rate:
- 2500V/µs
- Current - Supply:
- 16.5 mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply, Single/Dual (±):
- ±4.5V ~ 18V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-SOIC
AD811AR-16-REEL FAQ
1.How can I place an order for AD811AR-16-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD811AR-16-REEL 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 AD811AR-16-REEL reliable?
The price and inventory of AD811AR-16-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD811AR-16-REEL is usually 5 days.
3.What payment methods are accepted for AD811AR-16-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD811AR-16-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD811AR-16-REEL?
AD811AR-16-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD811AR-16-REEL 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 AD811AR-16-REEL?
For technical support, including AD811AR-16-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD811AR-16-REEL requirements.
6.How does Aetrix verify that AD811AR-16-REEL is sourced from the original manufacturer or authorized distributors?
All AD811AR-16-REEL 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 AD811AR-16-REEL meets industry standards.
7.What is the process for return or replacement of AD811AR-16-REEL?
All AD811AR-16-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD811AR-16-REEL, 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 AD811AR-16-REEL part is unused and in its original packaging.
Return procedure for AD811AR-16-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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