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Analog Devices Inc. LT6211IDD#PBF
- Part No.:
- LT6211IDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LT6211IDD#PBF.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:237
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Product details
Overview
LT6211IDD#PBF from Analog Devices (formerly Linear Technology) is a dual current feedback amplifier with programmable supply current per channel (300µA to 6mA), 200MHz bandwidth at 6mA, rail-to-rail output swing, and ±75mA output drive capability. It operates on ±1.5V to ±6V or 3V–12V supplies and is used in high-fidelity video buffering, cable driver stages, and low-power instrumentation signal conditioning.
For engineers reviewing the LT6211IDD#PBF datasheet, LT6211IDD#PBF pinout, LT6211IDD#PBF application, or LT6211IDD#PBF equivalent, key selection criteria include programmable bandwidth vs. quiescent current trade-offs, differential gain/phase performance into 150Ω loads, C-Load™ capacitive-load drive capability, and thermal design for the exposed-pad DFN-10 package.
Technical Context
The LT6211IDD#PBF implements a dual-channel current feedback architecture with independent ISET pins enabling per-amplifier bias control. Its transimpedance gain stage drives a low-distortion rail-to-rail output stage capable of 700V/µs slew rate and 20ns 0.1% settling for 2V steps.
Bandwidth scales directly with supply current: 200MHz at 6mA per amplifier, 100MHz at 3mA, and 10MHz at 300µA - all verified under AV = +2, RL = 150Ω (±5V) or RL = 1k (3V) conditions. Input common-mode range extends to within 1.2V of rails, and output swing reaches 0.05V to 2.85V on 3V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | Programmable 300µA–6mA per amplifier via external RSET; enables dynamic power/bandwidth optimization. |
| Small-Signal BW | 200MHz at 6mA (AV = 1, RL = 150Ω); supports high-speed video and communication interfaces. |
| Slew Rate | 700V/µs (IS = 6mA); ensures faithful reproduction of fast transient signals without slewing distortion. |
| Output Drive | ±75mA minimum into short-circuit; sustains stable operation driving 150Ω video loads or capacitive cables. |
| Differential Gain/Phase | 0.20%/0.10° into 150Ω; meets broadcast-grade video fidelity requirements (NTSC/PAL). |
| Input Noise | 6.5nV/√Hz (IS = 6mA); preserves SNR in precision signal conditioning paths. |
| Operating Temp | –40°C to +85°C; qualified for industrial and automotive under-hood environments. |
Pinout & Package
LT6211IDD#PBF is housed in a 10-lead (3mm × 3mm × 0.8mm) plastic DFN package with exposed pad connected to V– for thermal management. Pin 11 (exposed pad) must be soldered to PCB ground plane to achieve θJA = 43°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply | Accepts 3V–12V single or ±1.5V–±6V dual supply; powers both amplifiers. |
| OUT B | Amplifier B Output | Rail-to-rail output capable of ±75mA drive; connects directly to load or feedback network. |
| –IN B | Inverting Input B | Current-feedback node; requires matched RF/RG for stable closed-loop gain. |
| +IN B | Noninverting Input B | High-impedance input (≥0.5MΩ); referenced to common-mode voltage range. |
| ISET B | Bias Control B | Connects to external resistor to V– to set quiescent current for Channel B independently. |
| OUT A | Amplifier A Output | Independent rail-to-rail output; identical drive and settling specs as OUT B. |
| –IN A | Inverting Input A | Current-feedback node for Channel A; decoupled from Channel B for >100dB isolation. |
| +IN A | Noninverting Input A | High-Z input with 2pF capacitance; optimized for low-noise layout routing. |
| ISET A | Bias Control A | Enables asymmetric biasing: e.g., 6mA on Channel A for video drive, 300µA on Channel B for standby monitoring. |
| V– | Negative Supply | Reference for both amplifiers and exposed pad; must be low-impedance for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Bandwidth | 10MHz–200MHz range per amplifier via RSET; eliminates need for multiple fixed-bandwidth op-amps. |
| Rail-to-Rail Output | Swings to within 0.05V of rails on 3V supply; maximizes dynamic range in low-voltage systems. |
| C-Load™ Drive | Stable with unlimited capacitive loads; removes need for isolation resistors in LCD/camera interface designs. |
| Video-Optimized Linearity | –75dB HD3 at 1MHz, 2VP-P; enables clean composite video amplification without ghosting or color bleed. |
| Thermal-Enhanced DFN | Exposed V– pad reduces θJA to 43°C/W; supports continuous 6mA/channel operation at 85°C ambient. |
Applications
| Video Signal Buffering | Cable Driver for SDI/HDMI |
|---|---|
Use Scenario: Driving 75Ω coaxial cable runs in broadcast equipment with minimal gain error and phase shift. IC Role / Device Role / Timing Role: Dual-channel buffer amplifying composite NTSC/PAL signals while preserving sync timing integrity. Use Value: 0.20% differential gain and 0.10° differential phase ensure accurate color reproduction over 100m cable lengths. | Use Scenario: Transmitting high-speed digital video signals across backplanes or interconnects with impedance matching. IC Role / Device Role / Timing Role: Current-feedback driver providing fast edge rates and low jitter for HDMI TMDS clock/data lanes. Use Value: 700V/µs slew rate and 20ns 0.1% settling maintain eye diagram integrity at 1.65Gbps data rates. |
| Low-Power Instrumentation Front-End | Industrial Sensor Signal Conditioning |
Use Scenario: Amplifying low-level sensor outputs in battery-powered portable test equipment. IC Role / Device Role / Timing Role: Dual amplifier configured as programmable-gain stage and anti-alias filter driver. Use Value: 300µA quiescent current per channel extends battery life while maintaining 10MHz usable bandwidth. | Use Scenario: Conditioning thermocouple or strain gauge outputs in harsh factory-floor environments. IC Role / Device Role / Timing Role: Precision buffer isolating sensitive analog inputs from noisy digital subsystems. Use Value: 46dB CMRR and 60dB PSRR suppress common-mode noise from motor drives and PLC switching transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual current feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6211CMS#PBF | Same electrical specs but in 10-lead MSOP package (θJA = 120°C/W); no exposed thermal pad. | Preferred for prototyping or low-volume PCBs where thermal mass is less critical than manual assembly. | Select when board space allows larger MSOP footprint and thermal derating is acceptable up to 6mA. |
| ADA4817-2ARMZ | Faster 1GHz GBW but fixed 15mA supply current; no programmable ISET; higher noise (4.3nV/√Hz). | Better for ultra-high-speed ADC drivers where bandwidth outweighs power constraints. | Choose only if 200MHz is insufficient and system can accommodate 3× higher quiescent power. |
Compared with LT6211CMS#PBF, the LT6211IDD#PBF delivers superior thermal performance (43°C/W vs 120°C/W) for high-current operation in compact layouts; versus ADA4817-2ARMZ, it offers 20× lower minimum supply current (300µA vs 15mA) enabling true adaptive power scaling in battery-sensitive designs.
Availability
LT6211IDD#PBF is available at Aetrix Electronics and suitable for video signal buffering, industrial sensor conditioning, and low-power instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LT6211IDD#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 acquired Linear Technology in 2017 and maintains full product support, documentation, and manufacturing continuity for legacy Linear parts.
The LT6210/LT6211 family was designed specifically for high-speed, low-power analog signal paths in portable video, communications, and instrumentation - prioritizing bandwidth/power scalability and video-grade linearity over generic op-amp versatility.
FAQ
What is the maximum supply voltage for LT6211IDD#PBF?
The LT6211IDD#PBF has an absolute maximum total supply voltage of 13.2V (V+ to V–). It operates reliably across ±1.5V to ±6V dual supplies or 3V to 12V single supplies. Exceeding 13.2V risks permanent damage per Absolute Maximum Ratings. For long-term reliability at ±6V, ensure thermal design accommodates power dissipation at full 6mA per channel.
How do I configure LT6211IDD#PBF for 100MHz bandwidth?
To achieve 100MHz small-signal bandwidth with LT6211IDD#PBF, set IS = 3mA per amplifier using RSET = 56kΩ to V– (±5V supply) or 10kΩ to V– (3V supply), configure AV = +2 with RF = RG = 1.1kΩ, and drive a 150Ω load. This configuration is validated in the Typical AC Performance table and yields <1dB peaking with 100MHz –3dB point.
Does LT6211IDD#PBF require external compensation for stability?
No, the LT6211IDD#PBF is internally compensated for unity-gain stability and does not require external compensation components. Its current-feedback architecture achieves stability with standard resistive feedback networks (e.g., RF = RG = 887Ω for AV = +2). However, layout best practices - including 0.1µF ceramic bypass caps at each supply pin and minimized inverting input trace length - are essential to prevent oscillation.
Can LT6211IDD#PBF drive a 75Ω video load with DC coupling?
Yes, the LT6211IDD#PBF can DC-couple to a 75Ω video load when biased with appropriate common-mode voltage (e.g., 1.5V on 3V supply or 0V on ±5V supply). Its rail-to-rail output delivers 2.6VPP minimum swing into 150Ω and maintains 0.20% differential gain - confirming suitability for broadcast video line driving without AC coupling capacitors.
What is the thermal resistance (θJA) of LT6211IDD#PBF and how is it achieved?
The LT6211IDD#PBF achieves θJA = 43°C/W when its exposed pad (Pin 11) is soldered to a PCB ground plane with adequate copper area. This value assumes a 2500mm² FR-4 board with 2oz copper on both sides. Failure to connect the exposed pad raises θJA significantly - degrading thermal performance and limiting sustained 6mA/channel operation above 60°C ambient.
LT6211IDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 700V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 200 MHz
- Current - Input Bias:
- 13.5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 5.8mA (x2 Channels)
- Current - Output / Channel:
- 75 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LT6211IDD#PBF FAQ
1.How can I place an order for LT6211IDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6211IDD#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 LT6211IDD#PBF reliable?
The price and inventory of LT6211IDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6211IDD#PBF is usually 5 days.
3.What payment methods are accepted for LT6211IDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6211IDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6211IDD#PBF?
LT6211IDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6211IDD#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 LT6211IDD#PBF?
For technical support, including LT6211IDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6211IDD#PBF requirements.
6.How does Aetrix verify that LT6211IDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT6211IDD#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 LT6211IDD#PBF meets industry standards.
7.What is the process for return or replacement of LT6211IDD#PBF?
All LT6211IDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6211IDD#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 LT6211IDD#PBF part is unused and in its original packaging.
Return procedure for LT6211IDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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