HA-5190 데이터 시트보기 (PDF) - Intersil

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HA-5190

150MHz, Fast Settling Operational Amplifiers

Intersil 

HA-5190, HA-5195

Application Information

Power Supply Decoupling

Although not absolutely necessary, it is recommended that

all power supply lines be decoupled with 0.01µF ceramic

capacitors to ground. Decoupling capacitors should be

located as near to the amplifier terminals as possible.

Stability Considerations

HA-5190/5195 is stable at gains > 5. Gains < 5 are covered

below. Feedback resistors should be of carbon composition

located as near to the input terminals as possible.

Wiring Considerations

Video pulse circuits should be built on a ground plane.

Minimum point to point connections directly to the amplifier

terminals should be used. When ground planes cannot be

used, good single point grounding techniques should be

applied.

Output Short Circuit

HA-5190/5195 does not have output short circuit protection.

Short circuits to ground can be tolerated for approximately

10 seconds. Short circuits to either supply will result in

immediate destruction of the device.

Heavy Capacitive Loads

When driving heavy capacitive loads (>100pF) a small

resistor (100Ω) should be connected in series with the

output and inside the feedback loop.

Typical Applications (Also see Application Notes AN525 and AN526)

IN

11pF

(NOTE)

+

C1 -

RF 750Ω (NOTE)

OUT

200Ω

IN

+

1kΩ (NOTE)

-

RF

1kΩ (NOTE)

OUT

200Ω

OUTPUT

OUTPUT

INPUT

INPUT

Vertical Scale: 2V/Div.

Horizontal Scale: 100ns/Div.

Vertical Scale: 2V/Div.

Horizontal Scale: 100ns/Div

NOTE:

Values were determined experimentally for optimum speed and settling time. RF and C1 should be optimized for each

particular application to ensure best overall frequency response.

FIGURE 3. SUGGESTED COMPENSATION FOR NONINVERTING UNITY GAIN AMPLIFIER

4

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