NE5204 Datasheet | Philips Semiconductors

DESCRIPTION The NE/SA5204A family of wideband amplifiers replaces the NE/SA5204 family. The ‘A’ parts are fabricated on a rugged 2µm bipolar process featuring excellent statistical process control. Electrical performance is nomically identical to the original parts. The NE/SA5204A is a high-frequency amplifier with a fixed insertion gain of 20d B. The gain is flat to ±0.5d B from DC to 200MHz. The -3d B bandwidth is greater than 350MHz. This performance makes the amplifier ideal for cable TV applications. The NE/SA5204A operates with a single supply of 6V, and only draws 25m A of supply current, which is much less than parable hybrid parts. The noise figure is 4.8d B in a 75Ω system and 6d B in a 50Ω system. The NE/SA5204A is a relaxed version of the NE5205. Minimum guaranteed bandwidth is relaxed to 350MHz and the “S” parameter Min/Max limits are specified as typicals only. Until now, most RF or high-frequency designers had to settle for discrete or hybrid solutions to their amplification problems. Most of these solutions required trade-offs that the designer had to accept in order to use high-frequency gain stages. These include high power consumption, large ponent count, transformers, large packages with heat sinks, and high part cost. The NE/SA5204A solves these problems by incorporating a wideband amplifier on a single monolithic chip. The part is well matched to 50 or 75Ω input and output impedances. The standing wave ratios in 50 and 75Ω systems do not exceed 1.5 on either the input or output over the entire DC to 350MHz operating range. Since the part is a small, monolithic IC die, problems such as stray capacitance are minimized. The die size is small enough to fit into a very cost-effective 8-pin small-outline (SO) package to further reduce parasitic effects. No external ponents are needed other than AC-coupling capacitors because the NE/SA5204A is internally pensated and matched to 50 and 75Ω. The amplifier has very good distortion specifications, with second...