MAX4249ESD Просмотр технического описания (PDF) - Maxim Integrated

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MAX4249ESD

SOT23 / Single-Supply / Low-Noise / Low-Distortion / Rail-to-Rail Op Amps

Maxim Integrated 

SOT23, Single-Supply, Low-Noise,

Low-Distortion, Rail-to-Rail Op Amps

160

140

120

100

80

60

40

20

0

10

SHADED AREA INDICATES

STABLE OPERATION

WITH NO NEED FOR

ISOLATION RESISTOR.

100

1000

CAPACITIVE LOADING (pF)

10,000

NOTE: USING AN ISOLATION RESISTOR REDUCES PEAKING.

Figure 6. Isolation Resistance vs. Capacitive Loading to

Minimize Peaking (<2dB)

4.5

VDD = 3V

4.0

3.5

3.0

2.5

2.0

1.5

SHADED AREA INDICATES

1.0 STABLE OPERATION

0.5

WITH NO NEED FOR

ISOLATION RESISTOR.

0

10

100

1000

CAPACITIVE LOAD (pF)

10,000

NOTE: RISO CHOSEN FOR PEAKING <2dB.

Figure 8. MAX4250–MAX4254 Unity-Gain Bandwidth vs.

Capacitive Load

25

MAX4250–MAX4254 (AV = +1)

MAX4249/MAX4255–MAX4257 (AV = +10)

20 RISO = 0

SHADED AREA INDICATES

15 STABLE OPERATION

WITH NO NEED FOR

ISOLATION RESISTOR.

10

5

0

10

100

1000

CAPACITIVE LOAD (pF)

10,000

Figure 7. Peaking vs. Capacitive Load

power supply with a 0.1µF ceramic capacitor placed

close to the VDD pin. If operating from dual supplies,

bypass each supply to ground.

Good layout improves performance by decreasing the

amount of stray capacitance and noise at the op amp’s

inputs and output. To decrease stray capacitance, min-

imize PC board trace lengths and resistor leads, and

place external components close to the op amp’s pins.

___________________Chip Information

TRANSISTOR COUNTS:

MAX4250/MAX4251/MAX4255/MAX4256: 170

MAX4249/MAX4252/MAX4253/MAX4257: 340

MAX4254: 680

Ordering Information (continued)

PART

TEMP. RANGE

PIN-

PACKAGE

SOT

TOP MARK

MAX4251ESA -40°C to +85°C 8 SO

—

MAX4251EUA -40°C to +85°C 8 µMAX

—

MAX4252ESA -40°C to +85°C 8 SO

—

MAX4252EUA -40°C to +85°C 8 µMAX

—

MAX4253EUB -40°C to +85°C 10 µMAX

—

MAX4253ESD -40°C to +85°C 14 SO

—

MAX4254ESD -40°C to +85°C 14 SO

—

MAX4255EUK-T -40°C to +85°C 5 SOT23-5 ACCJ

MAX4256ESA -40°C to +85°C 8 SO

—

MAX4256EUA -40°C to +85°C 8 µMAX

—

MAX4257ESA -40°C to +85°C 8 SO

—

MAX4257EUA -40°C to +85°C 8 µMAX

—

______________________________________________________________________________________ 11

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