MAX4417EUA Maxim Integrated, MAX4417EUA Datasheet - Page 16

• Manufacturer Part Number: MAX4417EUA
• Description: High Speed Operational Amplifiers
• Manufacturer: Maxim Integrated

Specifications of MAX4417EUA

• Number Of Channels: 2
• Voltage Gain Db: 93 dB
• Input Offset Voltage: 0.5 mV (Typ) at 5.5 V
• Slew Rate: 470 V/us at 5 V
• Operating Supply Voltage: 3 V, 5 V
• Maximum Operating Temperature: + 85 C
• Package / Case: uMAX
• Common Mode Rejection Ratio (min): 65 dB
• Gain Bandwidth Product: 150 MHz
• Maximum Power Dissipation: 362 mW
• Minimum Operating Temperature: - 40 C
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V

Coaxial cable and other transmission lines are easily
driven when properly terminated at both ends with their
characteristic impedance. Driving back-terminated
transmission lines essentially eliminates the line’s
capacitance.
___________Applications Information
The MAX4414/MAX4416/MAX4418 are internally com-
pensated for unity gain. When configured for unity gain,
the devices require a 24Ω feedback resistor (R
resistor improves AC response by reducing the Q of the
parallel LC circuit formed by the parasitic feedback
capacitance and inductance.
Low-Power, +3V/+5V, 400MHz Single-Supply
Op Amps with Rail-to-Rail Outputs
Figure 2. Capacitive Load vs. Isolation Resistance
16
Figure 1. Driving a Capacitive Load Through an Isolation
Resistor
______________________________________________________________________________________
30
28
26
24
22
20
18
16
14
12
10
R
V
G
IN
0
R
BIN
200
Choosing Resistor Values
400
C
LOAD
R
Unity-Gain Configuration
F
(pF)
600
800
R
ISO
1000
F
C
). This
V
L
OUT
Select the gain-setting feedback (R
resistor values that best fit the application. Large resis-
tor values increase voltage noise and interact with the
amplifier’s input and PC board capacitance. This can
generate undesirable poles and zeros and decrease
bandwidth or cause oscillations. For example, a nonin-
verting gain-of-two configuration (R
resistors, combined with 1.8pF of amplifier input capac-
itance and 1pF of PC board capacitance, causes a
pole at 114MHz. Since this pole is within the amplifier
bandwidth, it jeopardizes stability. Reducing the 1kΩ
resistors to 100Ω extends the pole frequency to
1.14GHz, but could limit output swing by adding 200Ω
in parallel with the amplifier’s load resistor.
Note: For high gain applications where output offset
voltage is a consideration, choose R
parallel combination of R
Figure 3a. Noninverting Gain Configuration
Figure 3b. Inverting Gain Configuration
IN
IN
Inverting and Noninverting Configurations
R
G
R
R
S
G
R
S
R
S
=
R
R
F
F
F
V
and R
OUT
×
+
R
F
V
= [1+ (R
OUT
R
R
R
F
G
G
= (R
G
F
F
(Figures 3a and 3b):
/ R
/ R
F
S
G
G
)] V
) V
F
= R
to be equal to the
) and input (R
IN
IN
G
V
) using 1kΩ
OUT
V
OUT
R
O
R
0
G
)