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Analog Devices Inc. LT1206CS8#PBF
- Part No.:
- LT1206CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1206CS8#PBF.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:375
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Product details
Overview
LT1206CS8#PBF from Analog Devices (formerly Linear Technology) is a current feedback amplifier optimized for high-current video and cable driving applications. It delivers 250mA minimum output drive, 60MHz bandwidth at AV = 2 with 100Ω load, 900V/µs slew rate, 0.02% differential gain, and 0.17° differential phase - enabling robust RGB, composite video, and multi-cable distribution in broadcast and test equipment.
For engineers reviewing the LT1206CS8#PBF datasheet, LT1206CS8#PBF pinout, LT1206CS8#PBF application, or LT1206CS8#PBF equivalent, key selection criteria include capacitive-load stability up to 10,000pF, shutdown-mode supply current <200µA, adjustable quiescent current via external resistor, ±5V to ±15V dual-supply operation, and SO-8 package thermal resistance of 60°C/W.
Technical Context
The LT1206CS8#PBF employs a proprietary complementary bipolar architecture with current-feedback topology, enabling wide bandwidth independent of closed-loop gain while maintaining high slew rate and low distortion. Its transresistance input stage and high-output-current emitter-follower output stage support fast settling into reactive and low-impedance loads.
Stability is ensured across configurations: internally compensated for resistive loads, with optional external CCOMP network (0.01µF between OUT and COMP pins) to suppress peaking with capacitive loads up to 10,000pF. Shutdown control is referenced to V+, allowing direct interface with open-drain logic without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 60MHz at AV = 2, RL = 100Ω - supports full NTSC/PAL video baseband without attenuation |
| Slew Rate | 900V/µs at AV = 2, RL = 50Ω - enables clean 1080p/60 signal reproduction with minimal edge distortion |
| Differential Gain | 0.02% at VS = ±15V, RL = 30Ω - preserves color fidelity in analog video transmission |
| Differential Phase | 0.17° at VS = ±15V, RL = 30Ω - maintains timing integrity between luminance and chrominance components |
| Output Drive | 250mA minimum - drives multiple 75Ω coaxial cables simultaneously without gain droop |
| Supply Range | ±5V to ±15V - accommodates legacy industrial and broadcast power rails |
| Shutdown Current | <200µA - reduces system standby power in multi-channel video routers |
Pinout & Package
LT1206CS8#PBF is housed in an 8-lead plastic SOIC (S8) package with standard JEDEC MS-012AC footprint, 1.27mm pitch, and θJA = 60°C/W on 2500 mm² copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive Supply | Connects to +VS rail; internal bias generation reference |
| 2 (OUT) | Amplifier Output | High-current emitter-follower output capable of sourcing/sinking ≥250mA |
| 3 (V–) | Negative Supply | Connects to –VS rail; forms return path for output current |
| 4 (COMP) | Compensation Terminal | Optional 0.01µF capacitor to OUT enables stable operation with CL ≤ 10,000pF |
| 5 (V+) | Redundant Positive Supply | Second V+ pin for improved power delivery and reduced PSRR at high frequencies |
| 6 (–IN) | Inverting Input | Current-summing node; requires resistive feedback for stability |
| 7 (+IN) | Noninverting Input | High-impedance (10MΩ) voltage-sensing node for buffer/gain configurations |
| 8 (S/D) | Shutdown Control | Logic-high (≥V+) disables bias; logic-low (≤V– or GND) enables normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Load Stability | Stable with up to 10,000pF without external compensation; optional COMP network eliminates peaking |
| Adjustable Quiescent Current | Set from 5mA to 30mA using single resistor from S/D to GND - trades bandwidth for power savings |
| Video-Optimized Linearity | 0.02% differential gain / 0.17° differential phase meets SMPTE 253M broadcast standards |
| High Output Current Drive | 250mA min ensures full swing into three parallel 75Ω cables (225Ω total) with <0.1dB gain error |
| Fast Shutdown Switching | Transition time <1µs between active and shutdown states - suitable for frame-synchronized blanking |
Applications
| RGB Video Distribution | Test Equipment Amplifier |
|---|---|
Use Scenario: Driving three simultaneous RGB analog video signals from a graphics controller to separate monitors or capture devices. IC Role / Device Role / Timing Role: Noninverting unity-gain buffer with shutdown control synchronized to display blanking intervals. Use Value: Maintains 0.02% differential gain and 0.17° phase across all channels, preserving color registration and eliminating hue shifts. | Use Scenario: Amplifying fast-rise-time calibration pulses in automated test equipment (ATE) for oscilloscopes and signal analyzers. IC Role / Device Role / Timing Role: High-slew-rate current-feedback amplifier configured as inverting gain-of-2 stage with 50Ω termination. Use Value: 900V/µs slew rate and 60MHz bandwidth ensure sub-10ns pulse fidelity with <1% overshoot into 50Ω loads. |
| Cable Driver for Broadcast | Low-Noise Buffered Line Driver |
Use Scenario: Transmitting composite NTSC video over 100m of RG-59 coaxial cable in security camera systems. IC Role / Device Role / Timing Role: Single-ended driver with 75Ω source termination and optional COMP network for long-cable stability. Use Value: Delivers 2Vpp into 75Ω with 0.02% differential gain, preventing color bleeding over extended cable runs. | Use Scenario: Buffering low-noise sensor outputs (e.g., photodiode transimpedance stages) before ADC sampling. IC Role / Device Role / Timing Role: Unity-gain follower with 3.6nV/√Hz input voltage noise and 10MΩ input impedance. Use Value: Preserves signal-to-noise ratio in precision measurement chains where source impedance exceeds 1kΩ. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1363CS8#PBF | Higher 70MHz bandwidth, lower 1.1nV/√Hz noise, but only 120mA output drive and no shutdown pin | Preferred for low-noise, medium-drive applications like instrumentation amplifiers; unsuitable for multi-cable video distribution | Select when noise performance outweighs drive strength and shutdown is unnecessary |
| THS3091D | 1200V/µs slew rate, ±15V supply, but requires external compensation and lacks integrated shutdown | Better for ultra-high-speed pulse amplification (e.g., laser diode drivers); not optimized for video linearity specs | Select when >1000V/µs slew rate is mandatory and differential gain/phase compliance is secondary |
Compared with LT1363CS8#PBF and THS3091D, the LT1206CS8#PBF uniquely balances video-grade linearity (0.02%/0.17°), 250mA drive, and integrated shutdown - making it the only option qualified for broadcast-compliant RGB distribution with power-gating capability.
Availability
LT1206CS8#PBF is available at Aetrix Electronics and suitable for RGB video distribution, broadcast cable driving, test equipment amplification, and precision buffered line driving requiring stable component supply across industrial temperature ranges (–40°C to 85°C).
Supply support for LT1206CS8#PBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, acquired Linear Technology in 2017 to expand its precision amplifier portfolio.
The LT1206CS8#PBF belongs to Linear Technology's legacy current-feedback amplifier product line, designed specifically for demanding video, imaging, and high-speed analog signal routing applications where drive strength, linearity, and capacitive-load stability are critical.
FAQ
What is the maximum capacitive load the LT1206CS8#PBF can drive stably?
The LT1206CS8#PBF is stable with up to 10,000pF of capacitive load when the optional compensation network is enabled (0.01µF capacitor between OUT and COMP pins). Without compensation, it remains stable with moderate capacitive loads typical of PCB traces and connectors, but large cables require the COMP network to suppress peaking. This capability makes the LT1206CS8#PBF especially valuable in video distribution systems where long coaxial runs introduce significant capacitance.
Does the LT1206CS8#PBF support single-supply operation?
The LT1206CS8#PBF is specified for dual-supply operation from ±5V to ±15V and does not support true single-supply operation due to input common-mode range limitations (±12V at ±15V supplies) and output swing constraints. While it may function with asymmetric supplies (e.g., +15V/0V), performance degrades: offset voltage shifts ~500µV per volt of supply mismatch, and inverting input bias current changes up to 5µA per volt. For single-supply video applications, the LT1206CS8#PBF is not recommended; consider rail-to-rail alternatives instead.
How does the shutdown feature of the LT1206CS8#PBF work electrically?
The shutdown pin (S/D) of the LT1206CS8#PBF is internally referenced to the positive supply (V+), not ground. Driving S/D to V+ (or leaving it open) places the device in shutdown mode, reducing supply current to <200µA and presenting a high-impedance, ~40pF output. Pulling S/D to V– (or ground) enables normal operation. This architecture allows direct interfacing with open-collector logic (e.g., 74C906) without level shifters - a 24kΩ pull-up resistor ensures fast turn-off. The LT1206CS8#PBF's shutdown behavior is thus supply-referenced, not ground-referenced.
Can the LT1206CS8#PBF be used in inverting amplifier configurations?
Yes, the LT1206CS8#PBF supports both inverting and noninverting configurations, but performance differs significantly. In inverting mode, slew rate remains high (~860V/µs at AV = –1) even at reduced quiescent current, making it suitable for high-speed signal inversion. However, differential gain and phase specifications (0.02%/0.17°) are validated only in noninverting configurations per the datasheet. For video applications requiring those linearity metrics, noninverting use is mandatory; the LT1206CS8#PBF's inverting capability is best reserved for non-video signal conditioning where slew and bandwidth dominate.
What thermal considerations apply to the LT1206CS8#PBF in SO-8 package?
The LT1206CS8#PBF in SO-8 (S8) package has a junction-to-ambient thermal resistance (θJA) of 60°C/W on a 2500 mm² copper area in still air. At maximum dissipation (30mA × 30V = 0.9W), junction temperature rises ~54°C above ambient - well within the 150°C limit if ambient stays below 96°C. To maintain reliability, ensure ≥225 mm² copper pour connected to pins 1 and 8 (V+), avoid enclosing the device, and verify TJ = (PD × θJA) + TA does not exceed 150°C under worst-case load and ambient conditions. The LT1206CS8#PBF includes thermal shutdown protection that cycles operation if this threshold is breached.
LT1206CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 900V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 60 MHz
- Current - Input Bias:
- 10 µA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 20mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1206CS8#PBF FAQ
1.How can I place an order for LT1206CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1206CS8#PBF 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 LT1206CS8#PBF reliable?
The price and inventory of LT1206CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1206CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1206CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1206CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1206CS8#PBF?
LT1206CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1206CS8#PBF 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 LT1206CS8#PBF?
For technical support, including LT1206CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1206CS8#PBF requirements.
6.How does Aetrix verify that LT1206CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1206CS8#PBF 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 LT1206CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1206CS8#PBF?
All LT1206CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1206CS8#PBF, 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 LT1206CS8#PBF part is unused and in its original packaging.
Return procedure for LT1206CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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