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Analog Devices Inc. AD811AR-16-REEL7
- Part No.:
- AD811AR-16-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD811AR-16-REEL7.pdf
- Description:
- IC AMP CURRENT FEEDBACK 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,556
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Product details
Overview
AD811AR-16-REEL7 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-REEL7 datasheet, AD811AR-16-REEL7 pinout, AD811AR-16-REEL7 application, or AD811AR-16-REEL7 equivalent, key selection criteria include its ±5 V to ±18 V supply flexibility, 16-pin SOIC_W package, video-grade settling performance (25 ns to 0.1%), and current-feedback architecture enabling stable wideband gain control.
Technical Context
The AD811AR-16-REEL7 implements a current-feedback op amp topology with transresistance input stage and low-impedance output, enabling bandwidth independence from closed-loop gain when configured with appropriate feedback resistors (e.g., 649 Ω for G = +2 at ±15 V). Its −IN node presents ~14 Ω impedance, while +IN exhibits ~1.5 MΩ, requiring asymmetric resistor networks for optimal stability and flatness.
It achieves 0.1 dB gain flatness to 35 MHz (G = +2) and maintains <0.01% differential gain error driving back-terminated 75 Ω coaxial cables-critical for NTSC/PAL/HDTV signal integrity. The device operates across −40°C to +85°C (A-grade) with 16.5 mA quiescent current at ±15 V and supports dual-supply configurations without rail-to-rail constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 120 MHz at G = +2 (±15 V); enables full HD baseband video amplification without aliasing |
| Differential Gain / Phase | 0.01% / 0.01° at 3.58 MHz (RL = 150 Ω); meets SMPTE/EBU broadcast color fidelity requirements |
| Slew Rate | 2500 V/µs (20 V p-p); supports fast transient response in pulsed medical imaging (ultrasound/PET) |
| Settling Time | 25 ns to 0.1% (2 V step); ensures accurate pixel-level timing in high-speed data acquisition buffers |
| Input Voltage Noise | 1.9 nV/√Hz at 1 kHz; preserves SNR in low-level video signal chains and sensor interfaces |
| Supply Range | ±4.5 V to ±18 V; allows operation from ±5 V logic rails up to ±15 V legacy video systems |
| Output Current | 100 mA continuous; drives two parallel 75 Ω back-terminated cables without gain droop |
Pinout & Package
AD811AR-16-REEL7 is housed in a 16-lead SOIC_W (RW-16) package with exposed pad thermal enhancement. Pin 1 is marked by a beveled corner; all NC pins must remain unconnected per datasheet Note 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 7, 8, 9, 10, 11, 12, 13, 15 | NC | No-connect terminals; floating or grounded connection causes instability or damage |
| 3 | −IN | Inverting input node; low impedance (~14 Ω) requires matched feedback network for stability |
| 5 | +IN | Non-inverting input; high impedance (~1.5 MΩ) permits direct sensor or DAC interface |
| 6 | OUTPUT | Low-impedance output capable of 100 mA into 75 Ω loads; series resistor needed for >10 pF capacitive drive |
| 14 | +VS | Positive supply terminal; bypass with 0.1 µF ceramic capacitor near pin for >10 MHz stability |
| 16 | −VS | Negative supply terminal; symmetric bypassing required to suppress PSRR-induced distortion |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Maintains >100 MHz bandwidth across G = +1 to +10 via RFB tuning (e.g., 649 Ω → 120 MHz at G = +2) |
| Broadcast-grade video linearity | 0.01% differential gain error at 3.58 MHz ensures color fidelity in NTSC/PAL/HDTV distribution |
| High slew rate & fast settling | 2500 V/µs slew rate + 25 ns to 0.1% enables accurate pulse reproduction in ultrasound front-ends |
| Wide supply range support | Operates from ±4.5 V to ±18 V, allowing drop-in replacement in legacy ±5 V and ±15 V video systems |
| Low noise performance | 1.9 nV/√Hz voltage noise + 20 pA/√Hz current noise preserves dynamic range in precision ADC buffers |
Applications
| Video Line Driver | ADC/DAC Buffer |
|---|---|
|
Use Scenario: Driving two parallel 75 Ω back-terminated coaxial cables in HDTV broadcast switchers. IC Role / Device Role / Timing Role: Final-stage video amplifier providing gain, level-shifting, and cable drive capability. Use Value: 0.01% differential gain error and >40 dB output-to-output isolation at 5 MHz ensure color-accurate signal distribution without crosstalk. |
Use Scenario: Buffering 10-bit+ ADC outputs in medical imaging data acquisition systems. IC Role / Device Role / Timing Role: High-fidelity analog interface isolating converter core from PCB trace capacitance and load variations. Use Value: 25 ns settling to 0.1% and −74 dB THD at 10 MHz preserve ENOB and SFDR in high-speed digitization paths. |
| DC Restoration Circuit | Ultrasound Signal Chain |
|
Use Scenario: Clamping video black level in CRT monitor sync circuits and broadcast test equipment. IC Role / Device Role / Timing Role: Precision clamp amplifier restoring DC reference during horizontal blanking intervals. Use Value: 3 mV max input offset voltage and 5 µV/°C drift minimize baseline shift across temperature in long-duration displays. |
Use Scenario: Amplifying low-amplitude echo signals in portable ultrasound beamformers. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate gain stage preceding programmable gain amplifier (PGA) and ADC. Use Value: 1.9 nV/√Hz input noise and 2500 V/µs slew rate enable detection of weak return pulses with minimal added jitter. |
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 |
|---|---|---|---|
| THS3091D | Higher slew rate (6000 V/µs), but 0.04% differential gain error at 3.58 MHz; requires ±15 V min supply | Preferred for ultrafast pulse applications (e.g., LIDAR), less suitable for broadcast video where color fidelity dominates | Select THS3091D only if slew rate >4000 V/µs is mandatory and differential gain <0.02% is not required |
| LMH6702MA | Lower power (11 mA vs. 16.5 mA), 1.1 GHz GBW, but 0.03% differential gain error and no specified 0.01° phase error | Better for RF/IF signal chains and wideband test equipment; lacks documented video linearity validation | Choose LMH6702MA for general-purpose high-speed amplification where video-grade linearity is secondary |
Compared with THS3091D and LMH6702MA, AD811AR-16-REEL7 uniquely balances broadcast-grade differential gain/phase accuracy (0.01%/0.01°), 120 MHz bandwidth, and ±5 V compatibility-making it the only option qualified for SMPTE-compliant video infrastructure where color fidelity is non-negotiable.
Availability
AD811AR-16-REEL7 is available at Aetrix Electronics and suitable for video crosspoint switchers, HDTV broadcast systems, and medical ultrasound signal chains requiring stable component supply and long-term obsolescence management.
Supply support for AD811AR-16-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 AD811 belongs to Analog Devices' precision video amplifier product line, engineered specifically for broadcast, medical imaging, and instrumentation applications demanding sub-0.02% differential gain accuracy and multi-hundred-MHz bandwidth.
FAQ
What is the recommended feedback resistor for AD811AR-16-REEL7 at G = +2 with ±15 V supplies?
The AD811AR-16-REEL7 requires a 649 Ω feedback resistor (RFB) for G = +2 operation at ±15 V supplies, delivering 120 MHz −3 dB bandwidth and 0.1 dB gain flatness to 35 MHz. This value is validated in Table 3 of the AD811 datasheet Rev. G and ensures optimal stability and video linearity. Using 562 Ω instead yields reduced bandwidth (80 MHz) and increased peaking, degrading differential phase accuracy.
Can AD811AR-16-REEL7 drive a 75 Ω coaxial cable directly without external termination?
No-AD811AR-16-REEL7 must drive 75 Ω coaxial cables with proper back-termination (75 Ω resistor at far end) to achieve its specified 0.01% differential gain and 0.01° differential phase performance. Driving unterminated or source-terminated cables introduces reflections that degrade high-frequency gain flatness and color fidelity. Figure 41 in the AD811 datasheet explicitly shows back-termination configuration for video line driver use.
Does AD811AR-16-REEL7 support single-supply operation?
AD811AR-16-REEL7 is specified exclusively for dual-supply operation (±4.5 V to ±18 V) and does not support true single-supply configurations. Its input common-mode range extends to ±13 V at ±15 V supplies but does not include the negative rail-preventing rail-to-rail input operation. For single-supply video amplification, consider the AD8001 (single +5 V capable) or redesign with level-shifting circuitry.
What is the maximum capacitive load AD811AR-16-REEL7 can drive without compensation?
AD811AR-16-REEL7 maintains stable, flat frequency response with capacitive loads under 10 pF when using recommended feedback resistors (e.g., 649 Ω for G = +2). Loads exceeding 10 pF cause peaking and overshoot; Figure 38 shows that driving 100 pF requires either increasing RFB to 1.5 kΩ (reducing bandwidth) or adding a 30 Ω series resistor at the output (preserving bandwidth but attenuating gain).
Is AD811AR-16-REEL7 suitable for DC-coupled medical imaging applications like PET or gamma counters?
Yes-AD811AR-16-REEL7 is explicitly listed in its Applications section for PET, gamma, and counter applications due to its 3 mV max input offset voltage, 5 µV/°C drift, and 25 ns settling time. Its low 1.9 nV/√Hz voltage noise preserves signal-to-noise ratio in low-amplitude scintillation pulse amplification, and the A-grade temperature range (−40°C to +85°C) supports clinical environment reliability.
AD811AR-16-REEL7 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-REEL7 FAQ
1.How can I place an order for AD811AR-16-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD811AR-16-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 AD811AR-16-REEL7 reliable?
The price and inventory of AD811AR-16-REEL7 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-REEL7 is usually 5 days.
3.What payment methods are accepted for AD811AR-16-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD811AR-16-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD811AR-16-REEL7?
AD811AR-16-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD811AR-16-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 AD811AR-16-REEL7?
For technical support, including AD811AR-16-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD811AR-16-REEL7 requirements.
6.How does Aetrix verify that AD811AR-16-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD811AR-16-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 AD811AR-16-REEL7 meets industry standards.
7.What is the process for return or replacement of AD811AR-16-REEL7?
All AD811AR-16-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD811AR-16-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 AD811AR-16-REEL7 part is unused and in its original packaging.
Return procedure for AD811AR-16-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD811AR-16-REEL7 Tags
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