MAX4113 MAXIM [Maxim Integrated Products], MAX4113 Datasheet - Page 9

• Manufacturer Part Number: MAX4113
• Description: Single/Dual/Quad, 400MHz, Low-Power, Current Feedback Amplifiers
• Manufacturer: MAXIM [Maxim Integrated Products]

The MAX4112/MAX4117/MAX4119 are optimized for
closed-loop gains (A
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
Figure 1. Current Feedback Amplifier
_____________________________________________________________Pin Descriptions
SO/µMAX
MAX4112
MAX4113
_______________Detailed Description
1, 5, 8
—
—
—
—
—
—
2
3
4
6
7
PIN
V
MAX4117
MAX4118
R
IN
G
SO
—
—
—
—
1
2
3
4
5
6
7
8
_______________________________________________________________________________________
NAME
R
OUTA Amplifier A Output
OUTB Amplifier B Output
VCL
INA+
INB+
Single/Dual/Quad, 400MHz, Low-Power,
INA-
OUT
INB-
IN
V
N.C.
IN+
V
IN-
+1
CC
EE
) of 2V/V or greater, while the
No Connection. Not internally
connected.
Inverting Input
Amplifier A Inverting Input
Noninverting Input
Amplifier A Noninverting Input
Negative Power Supply.
Connect to -5V.
Amplifier B Noninverting Input
Amplifier Output
Amplifier B Inverting Input
Positive Power Supply.
Connect to +5V.
Z
OL
+1
R
F
FUNCTION
FUNCTION
MAX4112
MAX4113
MAX4117
MAX4118
MAX4119
MAX4120
Current Feedback Amplifiers
V
OUT
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.
Since these devices are current-feedback amplifiers,
their open-loop transfer function is expressed as a
transimpedance, ∆V
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:
where G = A
MAX4119/MAX4120
__________Applications Information
SO
10
11
12
13
14
—
1
2
3
4
5
6
7
8
9
V
OUT
V
PIN
IN
QSOP
VCL
8, 9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
G x
= 1 + (R
NAME
OUTC Amplifier C Output
OUTD Amplifier D Output
Z
OUTB Amplifier B Output
OUTA
OUT
INC+
IND+
INA+
INB+
INC-
IND-
INA-
INB-
N.C.
V
V
OL S
CC
EE
F
/∆I
/ R
IN
Amplifier A Output
Amplifier A Inverting Input
Amplifier A Noninverting Input
Positive Power Supply.
Connect to +5V.
Amplifier B Noninverting Input
Amplifier B Inverting Input
No Connection. Not internally
connected.
Amplifier C Inverting Input
Amplifier C Noninverting Input
Negative Power Supply.
Connect to -5V.
Amplifier D Noninverting Input
Amplifier D Inverting Input
G)
Theory of Operation
, or Z
Z
G x R
, and R
OL S
OL
FUNCTION
IN
IN
. The frequency
= 1 /g
R
F
M
30Ω.
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