LT1206CR - 250mA, 60MHz Current Feedback Amplifier | Analog Devices
料号： LT1206CR ✓ 量产中LT1206CR 概述
A current-feedback amplifier is a voltage-input, current-output feedback topology within the broader operational-amplifier and analog signal-conditioning product hierarchy. Unlike a conventional voltage-feedback amplifier, the LT1206CR controls a differential current rather than an error-voltage gain, enabling wide bandwidth and high slew-rate performance while preserving low distortion. It is positioned as an analog amplifier IC for video, communications, and signal-chain systems that need more output drive than a general-purpose op amp provides.
Verified manufacturer information identifies 250mA minimum output drive, 60MHz bandwidth, a 900V/us maximum slew-rate value, 0.02% differential-gain error, and 0.17 degrees differential phase. The device operates across a wide supply range and accepts supplies up to ±15V. A shutdown function places the amplifier in a high-impedance, low-current mode, with shutdown current below 200uA, helping reduce dissipation when the circuit is inactive.
The LT1206 is particularly suitable for video because it combines high bandwidth, high output current, and excellent video characteristics. It is also stable with large capacitive loads and can supply the current required by capacitive input and output networks. The adjustable supply-current feature allows engineers to balance performance and power consumption according to the source impedance, load, and operating conditions of a specific board.
Typical uses include video buffering, cable-driver interfaces, active video filters, video distribution, communications equipment, and test and measurement systems. In these applications, the 60MHz bandwidth and 250mA output-current capability provide useful margin for signal transmission and load driving, while the shutdown feature supports systems that periodically disable the amplifier.
When laying out the circuit, use short feedback paths, maintain the feedback network close to the amplifier, and account for the DDPAK-7 thermal-pad connection when calculating copper heat spreading. Because the exact pin names and exposed-tab assignment are not present in the supplied verified snippets, the package drawing is not populated rather than presenting an unverified pinout. Consult the official LT1206 datasheet before PCB release or substitution.
This page consolidates the verified Analog Devices product information, distributor availability references, package details, and practical selection guidance for the LT1206CR. It also distinguishes device-level evidence from unresolved replacement and pricing data, helping engineers avoid treating generic op-amp alternatives as true pin-compatible drop-ins.
直接替换替代料： LT1206CR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
LT1206CR#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LT1206CR 最大额定值与电气特性
| Amplifier Type | Current Feedback Amplifier |
| Number of Circuits | 1 circuit |
| Minimum Output Drive Current | 250 mA |
| Bandwidth | 60 MHz |
| Slew Rate | 100 V/us to 900 V/us |
| Differential Gain Error | 0.02% |
| Differential Phase | 0.17 degrees |
| Input Impedance | 10 M ohms |
| Supply Voltage Range | 10 V to 30 V |
| Maximum Supply Voltage | ±15 V |
| 关断电流 | <200 uA |
| 电源电流 | Adjustable |
| Capacitive Load Stability | Stable with large capacitive loads |
| 封装 | 7-lead DDPAK |
| Input Offset Voltage | 15 mV maximum |
LT1206CR 7-lead ddpak 引脚配置指南
LT1206CR（7-lead ddpak 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： LT1206CR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LT1206CR 适用于 6 应用s: Video Signal Buffering, Active Video Filter, Video Cable-Driver Output, Communications Signal Conditioning, Capacitive-Load Output Stage, Test and Measurement Front End.
Video Signal Buffering
The LT1206CR is well suited to video signal buffering because it combines 60MHz bandwidth with at least 250mA output-drive current and a maximum slew rate of 900V/us. Its verified 0.02% differential-gain error and 0.17-degree differential phase also support faithful video amplification. The amplifier can sit between a video source and a downstream cable, monitor, or distribution stage, reducing source loading while preserving signal amplitude and timing. The benefit depends on keeping feedback traces short and providing adequate output-current margin for the connected load.
推荐
Active Video Filter
The LT1206CR can implement an active video filter when the design requires both wide bandwidth and stronger output drive than a general-purpose operational amplifier provides. Its 60MHz bandwidth and 900V/us maximum slew rate allow the filter to process video-rate signals without relying on a slow output stage. Current-feedback topology and the 10M-ohm input impedance help the amplifier interact predictably with external feedback networks. Engineers should calculate gain-bandwidth behavior from the selected feedback resistor and verify stability, output swing, and load current against the intended video impedance.
推荐
Video Cable-Driver Output
The LT1206CR’s 250mA minimum output-drive current is useful when driving a terminated video cable or distributing a composite signal across multiple stages. Unlike a low-current amplifier, it has the drive capability required by capacitive cable loading while maintaining 60MHz bandwidth and a slew rate reaching 900V/us. The device can therefore reduce source loading and preserve signal integrity in longer interconnects. Layout remains important: short output paths, controlled return geometry, and appropriate source termination help limit reflections and ringing.
推荐
Communications Signal Conditioning
The LT1206CR is applicable to communications equipment that needs a high-output-drive analog stage rather than a precision-only instrumentation amplifier. Its 60MHz bandwidth, 10M-ohm input impedance, and 900V/us maximum slew rate support higher-frequency signal conditioning, while the shutdown current below 200uA supports power-conscious equipment that operates intermittently. The amplifier must still be matched to the source impedance and communication bandwidth, and its gain and phase characteristics should be checked over the full signal range before production release.
推荐
Capacitive-Load Output Stage
The LT1206CR is specifically useful as an output stage for capacitive loads because the manufacturer describes it as stable with large capacitive loads and capable of supplying the required current. Its minimum output-drive specification of 250mA is substantially higher than that of many precision op amps, reducing the risk that load capacitance will dominate amplifier behavior. When designing the stage, include output-current and dissipation checks, monitor output settling at the target frequency, and place feedback components close to the device to minimize parasitic feedback paths.
推荐
Test and Measurement Front End
The LT1206CR can serve as a high-drive input or output stage in test and measurement equipment when the source or load requires more current than a conventional precision amplifier can provide. Its 60MHz bandwidth, 250mA output-drive capability, and 900V/us maximum slew rate help preserve fast transient behavior at the interface. The 10M-ohm input impedance helps limit loading of the measured source, although the complete system must account for resistor network noise and parasitic capacitance. The shutdown function can reduce power when the measurement channel is inactive.
推荐
推荐产品汇总
工程参考数据： LT1206CR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LT1206CR#PBF |
|---|---|---|
| Package | 7-lead DDPAK | 7-lead DDPAK |
| Brand | Analog Devices | Analog Devices |
| Amplifier Type | Current Feedback Amplifier | Current Feedback Amplifier |
| Minimum Output Drive Current | 250 mA | 250 mA |
| Bandwidth | 60 MHz | 60 MHz |
| Maximum Slew Rate | 900 V/us | 900 V/us |
| Differential Gain Error | 0.02% | 0.02% |
| Differential Phase | 0.17 degrees | 0.17 degrees |
| Supply Voltage Range | 10 V to 30 V | 10 V to 30 V |
| Shutdown Current | <200 uA | <200 uA |
| Lead-Free Ordering Suffix | No #PBF suffix shown in target MPN | #PBF lead-free suffix |
关键差异点
- High output-drive capability （对比 General-purpose op amps such as TS556ID)
- Wideband current-feedback performance （对比 MC1458D)
- Capacitive-load drive （对比 NE5534DR)
设计说明
Keep the feedback resistor, feedback capacitor, and input connections close to the LT1206CR. Current-feedback amplifiers are sensitive to parasitic feedback introduced by long signal paths. Route the output to the load through a short, wide trace where practical, and return the load current directly to the device ground rather than through distant analog-ground paths.
Calculate dissipation from the actual output voltage, supply voltage, quiescent current, and load current before assigning copper area. The DDPAK package can remove substantial heat through its tab and PCB copper, but the verified snippets do not provide thermal resistance or junction-temperature limits. Use the manufacturer datasheet for those values and confirm the board’s tab and copper connection during layout review.
Validate large-capacitive-load operation at the lowest intended gain and maximum target bandwidth. Although the LT1206 is specified as stable with large capacitive loads, output current, output swing, and settling behavior still depend on load magnitude and frequency. Probe directly at the device and include output-current margin so capacitive transients do not force the amplifier outside its rated operating region.
合规信息
The verified LT1206CR#PBF ordering code includes a lead-free finish designation, but the supplied data does not explicitly provide RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 statements. AEC-Q100 is treated as not applicable because the product is an analog amplifier rather than an automotive-qualified device identified by the supplied data.
