CLC425AJP National Semiconductor, CLC425AJP Datasheet - Page 11

• Manufacturer Part Number: CLC425AJP
• Description: IC OP AMP LO NOISE WIDE 8-DIP
• Manufacturer: National Semiconductor

Specifications of CLC425AJP

• Amplifier Type: Voltage Feedback
• Number Of Circuits: 1
• Slew Rate: 350 V/µs
• Gain Bandwidth Product: 1.9GHz
• -3db Bandwidth: 95MHz
• Current - Input Bias: 12µA
• Voltage - Input Offset: 100µV
• Current - Supply: 15mA
• Current - Output / Channel: 90mA
• Voltage - Supply, Single/dual (±): 5 V ~ 12 V, ±2.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Output Type: -
• Other names: *CLC425AJP

Supply Current Adjustment
The CLC425's supply current can be externally adjusted
downward from its nominal value by adding an optional re-
sistor (R
in Figure 7. Several of the plots found within the plot pages
demonstrate the CLC425's behavior at different supply cur-
rents. The plot labeled “I
selecting R
variation which is bounded by the 25°C curve.
Non-Inverting Gains Less Than 10V/V
Using the CLC425 at lower non-inverting gains requires ex-
ternal compensation such as the shunt compensation as
shown in Figure 8. The quiescent supply current must also be
reduced to 5mA with R
pacitors are chosen to reduce frequency response peaking to
less than 1dB. The plot in the “Typical Performance” section
labeled “differential gain and Phase” shows the video perfor-
mance of the CLC425 with this compensation circuitry.
FIGURE 7. External Supply Current Adjustment
FIGURE 6. Noise Figure vs. Source Resistance
p
) between pin 8 and the negative supply as shown
p
and shows the results of standard IC process
p
for stability. The compensation ca-
cc
vs R
p
” provides the means for
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11
Inverting Gains Less Than 10V/V
The lag compensation of Figure 9 will achieve stability for
lower gains. Placing the network between the two input ter-
minals does not affect the closed-loop nor noise gain, but is
best used for the inverting configuration because of its affect
on the non-inverting input impedance.
Single-Supply Operation
The CLC425 can be operated with single power supply as
shown in Figure 10. Both the input and output are capacitively
coupled to set the dc operating point.
Low Noise Transimpedance Amplifier
The circuit of Figure 11 implements a low-noise tran-
simpedance amplifier commonly used with photo-diodes. The
transimpedance gain is set by R
FIGURE 8. External Shunt Compensation
FIGURE 9. External Lag Compensation
FIGURE 10. Single Supply Operation
f
. The simulated frequency
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