LM359 Datasheet, PDF (15/34 Pages) National Semiconductor (TI) – Dual, High Speed, Programmable, Current Mode Norton Amplifiers

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LM359
SNOSBT4C – MAY 1999 – REVISED MARCH 2013
Figure 34. Final Circuit Using Standard 5%
Tolerance Resistor Values
V_o(DC) = 5.1V
Differential phase error < 1° for 3.58 MHz f_IN
Differential gain error < 0.5% for 3.58 MHz f_IN
f_{−3 dB} low = 2.5 Hz
Figure 35. Circuit Performance
A NON-INVERTING VIDEO AMPLIFIER
For this case several design considerations must be dealt with.
• The output voltage (AC and DC) is strictly a function of the size of the feedback resistor and the sum of AC
and DC “mirror current” flowing into the (+) input.
• The amplifier always has 100% current feedback so external compensation is required. Add a small (1 pF–5
pF) feedback capacitance to leave the amplifier's open loop response and slew rate unaffected.
• To prevent saturating the mirror stage the total AC and DC current flowing into the amplifier's (+) input should
be less than 2 mA.
• The output's maximum negative swing is one diode above ground due to the V_BE diode clamp at the (−) input.
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