LH0033LH0063

Fast and Ultra Fast Buffers

The LH0033 and LH0063 are high speed FET input voltage follower/buffers designed to provide high current drive at frequencies from DC to over 100 MHz The LH0033 will provide ±10 mA into 1 kΩ loads (±100 mA peak) at slew rates of 1500 V/µs. The LH0063 will provide ±250 mA into 50X loads (±500 mA peak) at slew rates up to 6000 V/µs. In addition both exhibit excellent phase linearity up to 20 MHz.

Both are intended to fulfill a wide range of buffer applications such as high speed line drivers video impedance transformation nuclear instrumentation amplifiers op amp isolation buffers for driving reactive loads and high impedance input buffers for high speed A to Ds and comparators.

In addition the LH0063 can continuously drive 50X coaxial cables or be used as a yoke driver for high resolution CRT displays For additional applications information see AN-48. These devices are constructed using specially selected junction FETs and active laser trimming to achieve guaranteed performance specifications. The LH0033 is specified for operation from -55 °C to +125 °C the LH0033C and the LH0063C are specified from -25 °C to +85 °C. The LH0033 is available in either a 1.5 W metal TO-8 package or an 8-pin ceramic dual-in-line package. The LH0063 is available in a 5 W 8-pin TO-3 package.

Features

• Ultra fast (LH0063) 6000 V/µs
• Wide range single or dual supply operation
• Wide power bandwidth DC to 100 MHz
• High output drive ±10V with 50Ω load
• Low phase non-linearity 2 degrees
• Fast rise times 2 ns
• High input resistance 10¹⁰Ω

Advantages

• Only 10V supply needed for 5 Vp-p video out
• Speed does not degrade system performance
• Wide data rate range for phase encoded systems

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