SGM8302 Datasheet, PDF (9/16 Pages) SG Micro Corp – Rail-to-Rail Output Amplifiers

SGM8301/2/4
TYPICAL APPLICATION CIRCUIT
100MHz, High Voltage,
Rail-to-Rail Output Amplifiers
IN
+
_
200Ω
200Ω
75Ω
OUT
Z₀ = 75Ω
75Ω
Figure 1. Video Line Driver
APPLICATION
Layout and Power Supply Bypassing
The SGM8301/2/4 operate from single +4.5V to +12V or from dual ±2.25V to ±6V supplies. Bypass each supply with a
0.1µF capacitor as close to the pin as possible. SGMC recommends using micro-strip and stripline techniques to obtain
full bandwidth. To ensure that the PC board does not degrade the amplifier’s performance, design it for a frequency
greater than 1GHz. Pay careful attention to inputs and outputs to avoid large parasitic capacitance. Whether or not you
use a constant impedance board, observe the following design guidelines:
 Do not use wire-wrap boards; they are too inductive.
 Do not use IC sockets; they increase parasitic capacitance and inductance.
 Use surface-mount instead of through-hole components for better, high frequency performance.
 Use a PC board with at least two layers; it should be as free from voids as possible.
 Keep signal lines as short and as straight as possible. Do not make 90° turns; round all corners.
SG Micro Corp
9
www.sg-micro.com