MAX4113ESA 查看數據表（PDF） - Maxim Integrated
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MAX4113ESA Datasheet PDF : 12 Pages
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Single/Dual/Quad, 400MHz, Low-Power,
Current Feedback Amplifiers
_____________________________________________________________Pin Descriptions
PIN
MAX4112 MAX4117 NAME
MAX4113 MAX4118
SO/µMAX SO
FUNCTION
FUNCTION
1, 5, 8
—
N.C.
No Connection. Not internally
connected.
—
1
OUTA Amplifier A Output
2
—
IN- Inverting Input
—
2
INA- Amplifier A Inverting Input
3
—
IN+ Noninverting Input
—
3
INA+ Amplifier A Noninverting Input
4
4
VEE
Negative Power Supply.
Connect to -5V.
—
5
INB+ Amplifier B Noninverting Input
6
—
OUT Amplifier Output
—
6
INB- Amplifier B Inverting Input
—
7
OUTB Amplifier B Output
7
8
VCC
Positive Power Supply.
Connect to +5V.
_______________Detailed Description
The MAX4112/MAX4117/MAX4119 are optimized for
closed-loop gains (AVCL) of 2V/V or greater, while the
MAX4113/MAX4118/MAX4120 are optimized for
closed-loop gains of 8V/V or greater. These low-power,
high-speed, current feedback amplifiers operate from
±5V supplies. They are designed to drive video loads
with low distortion characteristics. The MAX4112/
MAX4117/MAX4119’s differential gain and phase are
0.02% and 0.03°, respectively; the MAX4113/
MAX4118/MAX4120 exhibit gain/phase error specifica-
tions of 0.02% and 0.04°, respectively. These charac-
teristics, plus a wide 0.1dB gain flatness, make the
MAX4112/MAX4113/MAX4117–MAX4120 ideal for use
RG
RF
RIN
+1
VOUT
+1
ZOL
VIN
MAX4112
MAX4113
MAX4117
MAX4118
MAX4119
MAX4120
PIN
MAX4119/MAX4120 NAME
FUNCTION
SO
QSOP
1
1
OUTA Amplifier A Output
2
2
INA- Amplifier A Inverting Input
3
3
INA+ Amplifier A Noninverting Input
4
4
VCC
Positive Power Supply.
Connect to +5V.
5
5
INB+ Amplifier B Noninverting Input
6
6
INB- Amplifier B Inverting Input
7
7
OUTB Amplifier B Output
—
8, 9
N.C.
No Connection. Not internally
connected.
8
10 OUTC Amplifier C Output
9
11
INC- Amplifier C Inverting Input
10
12
INC+ Amplifier C Noninverting Input
11
13
VEE
Negative Power Supply.
Connect to -5V.
12
14
IND+ Amplifier D Noninverting Input
13
15
IND- Amplifier D Inverting Input
14
16 OUTD Amplifier D Output
in broadcast and graphics video systems. The combi-
nation of ultra-high speed and low power makes these
parts suitable for use in general-purpose, high-speed
applications, such as medical imaging, industrial instru-
mentation, and communications systems.
__________Applications Information
Theory of Operation
Since these devices are current-feedback amplifiers,
their open-loop transfer function is expressed as a
transimpedance, ∆VOUT/∆IIN, or ZOL. The frequency
behavior of the open-loop transimpedance is similar to
the open-loop gain of a voltage feedback amplifier.
That is, it has a large DC value and decreases at
approximately 6dB per octave.
Analyzing the follower with gain, as shown in Figure 1,
yields the following transfer function:
( ) VOUT = G x
ZOL(S)
VIN
ZOL(S) + G x RIN + RF
where G = AVCL = 1 + (RF / RG), and RIN = 1 /gM ≅ 30Ω.
Figure 1. Current Feedback Amplifier
_______________________________________________________________________________________ 9
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