MAX4216ESA Maxim Integrated Products, MAX4216ESA Datasheet - Page 12

• Manufacturer Part Number: MAX4216ESA
• Description: Op Amps Integrated Circuits (ICs)
• Manufacturer: Maxim Integrated Products

Specifications of MAX4216ESA

• Number Of Channels: 2
• Voltage Gain Db: 61 dB
• Common Mode Rejection Ratio (min): 70 dB
• Input Offset Voltage: 4 mV
• Operating Supply Voltage: 3.3 V, 5 V
• Maximum Power Dissipation: 471 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8 Narrow
• Maximum Dual Supply Voltage: +/- 5.5 V
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: No

Miniature, 300MHz, Single-Supply,
Rail-to-Rail Op Amps with Enable
Figure 2. Enable Logic-Low Input Current vs. V
Figure 4. Enable Logic-Low Input Current vs. V
Series Resistor
12
______________________________________________________________________________________
-100
-120
-140
-160
-20
-40
-60
-80
-10
20
-1
-2
-3
-4
-5
-6
-7
-8
-9
0
0
0
0
50 100 150
50 100 150
mV ABOVE V
mV ABOVE V
200 250
200 250
300 350
300 350
EE
EE
400 450
400 450
IL
IL
with 10k
500
500
The MAX4212/MAX4213/MAX4216/MAX4218/MAX4220
are optimized for AC performance. They are not
designed to drive highly reactive loads, which de-
creases phase margin and may produce excessive
ringing and oscillation. Figure 5 shows a circuit that
eliminates this problem. Figure 6 is a graph of the opti-
mal isolation resistor (R
shows how a capacitive load causes excessive peak-
ing of the amplifier’s frequency response if the capaci-
tor is not isolated from the amplifier by a resistor. A
small isolation resistor (usually 20
before the reactive load prevents ringing and oscilla-
tion. At higher capacitive loads, AC performance is
controlled by the interaction of the load capacitance
and the isolation resistor. Figure 8 shows the effect of a
27 isolation resistor on closed-loop response.
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.
Figure 3. Circuit to Reduce Enable Logic-Low Input Current
Output Capacitive Loading and Stability
IN-
IN+
MAX42_ _
ENABLE
S
) vs. capacitive load. Figure 7
EN_
10k
OUT
to 30 ) placed