LM6181IM National Semiconductor, LM6181IM Datasheet - Page 23

• Manufacturer Part Number: LM6181IM
• Description: IC AMP CURR FEEDBK 100MHZ 16SOIC
• Manufacturer: National Semiconductor
• Series: VIP™ IIr

Specifications of LM6181IM

• Amplifier Type: Current Feedback
• Number Of Circuits: 1
• Slew Rate: 2000 V/µs
• -3db Bandwidth: 100MHz
• Current - Input Bias: 5µA
• Voltage - Input Offset: 3500µV
• Current - Supply: 7.5mA
• Current - Output / Channel: 130mA
• Voltage - Supply, Single/dual (±): 7 V ~ 32 V, ±3.5 V ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Gain Bandwidth Product: -
• Other names: *LM6181IM

Typical Applications
CAPACITIVE FEEDBACK
For voltage feedback amplifiers it is quite common to place a
small lead compensation capacitor in parallel with feedback
resistance, R
plifier’s peaking in the frequency domain which equivalently
tames the transient response. To limit the bandwidth of
current feedback amplifiers, do not use a capacitor across
R
loop reduces the amplifier’s stability. Instead, reduced peak-
ing in the frequency response, and bandwidth limiting can be
accomplished by adding an RC circuit, as illustrated in Fig-
ure 7b.
f
. The dynamic impedance of capacitors in the feedback
and R
and Improve Pulse Response Characteristics.
Provides Higher Fidelity Pulse Response. R
S
FIGURE 6. Resistive Isolation of C
Could Be Increased to Maintain A
f
. This compensation serves to reduce the am-
6a
6b
(Continued)
L
V
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Typical Performance
Characteristics
OVERDRIVE RECOVERY
When the output or input voltage range of a high speed
amplifier is exceeded, the amplifier must recover from an
overdrive condition. The typical recovery times for open-
loop, closed-loop, and input common-mode voltage range
overdrive conditions are illustrated in Figures 9, 11, 11, 12
respectively.
The open-loop circuit of Figure 8 generates an overdrive
response by allowing the
input range of the amplifier. Typical positive and negative
overdrive recovery times shown in Figure 9 are 5 ns and
25 ns, respectively.
Peaking in the Resulting Pulse Response
Bandwidth to 50 MHz, Eliminating
FIGURE 7. RC Limits Amplifier
±
0.5V input to exceed the linear
7a
7b
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