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2022-09-24 20:26:29
Introduction of LT1886CS8#PBF SMD SOP-8 High Speed Operational Amplifier
High Speed Op Amp LT1886CS8#PBF Gain Bandwidth 700MHz±200mA-72 dbc 1 mhz 4 vp-p 25Ω, AV = High Speed Op Amp LT1886CS8#PBF2 Stable in AV ≥ 10, Simple Compensation AV < 10 ± 4.3 v min Output swing, VS = ±6 v, RL = 25Ω ■ 7 mA supply current/amp ■ 200 v/µs slew rate with 1000 pf load ■ ■ stabilized 6 nv/√Hz input noise voltage ■ 2 pa/√Hz input noise Current 4 mv maximum input offset voltage μa maximum input bias current Input bias current High speed op amp LT1886CS8#PBF400 na maximum ±4.5 v minimum input CMR, VS = ±6 v at ±6 v, specified ±2.5 vHigh-speed operational amplifier LT1886CS8#PBF
The high-speed operational amplifier LT1886CS8#PBF is a 200mA minimum output current dual operational amplifier with excellent distortion performance high-speed operational amplifier LT1886CS8#PBF. The amplifier gain is stable, but can easily compensate for lower gains. The LT1886 features a balanced, high-impedance input with a maximum input bias current of 4µA, and a maximum input offset voltage of 4mv. Single-supply applications are easy to implement and achieve lower overall noise than current feedback amplifier implementations. Output driver 25Ω load ±4.3v ±6v supply. The output fluctuates at ±2.5V with a ±1.5V 100Ω load. The amplifier is stable with 1000pF capacitive loads, which makes it useful in buffer and cable driver applications. The LT1886 is fabricated using an advanced low voltage complementary bipolar process in Linear Technology and is housed in a thermally enhanced SO-8 package
The inputs to the LT1886 are NPN differential pairs protected by back-to-back diodes (see simplified schematic). There is no series protection resistor on the machine, which reduces the input voltage noise. If the input voltage difference is greater than 0.7V, the input current should be limited to an external resistor (usually a feedback resistor or source resistor) less than 10mA. Each input also has two ESD clamping diodes—one to one power supply. If the input driver exceeds the supply, limit the current with an external resistor less than 10mA. The LT1886 is designed to be a true op amp with high impedance input and low input bias current. The input bias current is ten times smaller than the input bias current. To minimize bias due to input bias current, match the equivalent DC resistance seen by both inputs. Compared to current feedback amplifiers, low input noise current can significantly reduce overall noise, especially for high source resistances.
The layout and passive components and gain bandwidth of the 700MHz LT1886 require attention to detail to extract maximum performance. Use a combination of ground planes, short lead lengths, and RF-quality power supply bypass capacitors. 470 pf and 0.1 μf). As the main application has high drive current, use low ESR supply bypass capacitors (1µf 10µf). For best distortion performance at high drive currents, a capacitor with as short a trace length as possible should be placed between pins 4 and 8. The best place for this capacitor is on the backside of the PC board. The DSL driver demo board (DC304) uses Taiyo Yuden 10µf ceramic (TMK432BJ106MM) for this part. The feedback resistor at the input end of the inverter is combined with the gain setting resistor in parallel, and combined with the input capacitor to form a pole, causing a frequency peak. In general, use feedback resistors of 1 kΩ or less. Thermal issues The LT1886 enhances θJA so the 8-pack V-pin fuses the lead frame.
Shenzhen Tianzhuo Weiye Electronics Co., Ltd.
In the past 10 years, Shenzhen Tianzhuo Weiye Electronics Co., Ltd. has seized the historical opportunities brought by China's reform and opening up and the rapid development of the electronics industry, adhered to customer-centricity and high-quality products as the foundation, and provided customers with one-stop procurement services for components. Won the respect and trust of customers, from an entrepreneurial company based in Huaqiangbei, Shenzhen Special Economic Zone, China, it has grown steadily into an electronic component supplier with several well-known brand product lines and customers in many countries and regions around the world. The electronic IC and 3C distributed and wholesaled sell well in the consumer market and enjoy a high status among consumers. The company has established long-term and stable cooperative relations with many retailers and agents.