Datasheet

LMV2011
www.ti.com SNOSA32C –AUGUST 2003–REVISED MARCH 2013
Figure 34. Composite Amplifier Configuration
Table 1. Composite Amplifier Measured Performance
A
V
R1 (Ω) R2 (Ω) C2 (pF) BW (MHz) SR (V/μs) en p-p (mV
PP
)
50 200 10k 8 3.3 178 37
100 100 10k 10 2.5 174 70
100 1k 100k 0.67 3.1 170 70
500 200 100k 1.75 1.4 96 250
1000 100 100k 2.2 0.98 64 400
In terms of the measured output peak-to-peak noise, the following relationship holds between output noise
voltage, e
n
p-p, for different closed-loop gain, A
V
, settings, where −3dB Bandwidth is BW:
(1)
Figure 35. Composite Amplifier Configuration
It should be kept in mind that in order to minimize the output noise voltage for a given closed-loop gain setting,
one could minimize the overall bandwidth. As can be seen from Equation 1 above, the output noise has a
square-root relationship to the Bandwidth.
Copyright © 2003–2013, Texas Instruments Incorporated Submit Documentation Feedback 13
Product Folder Links: LMV2011