Datasheet

100
1k 10k 100k 1M
FREQUENCY (Hz)
10
100
1000
10000
e
no
(nV/
Hz)
MAX GAIN
MID GAIN
MIN GAIN
A
VMAX
= 10
R
F
= 1k:
R
G
= 180:
V
RMS
= e
in
*
1.57 * (-3dB BANDWIDTH)
MIN GAIN LIMIT
TYPICAL GAIN
BEST FIT LINE
D
C
B
A
PARAMETER:
GAIN ACCURACY (TYPICAL) = B/C (dB)
GAIN ACCURACY (+ & - LIMIT) = D/C & A/C (dB)
GAIN MATCHING (+ & - LIMIT) = D/B & A/B (dB)
GAIN (V/V)
V
G
(V)
MAX GAIN LIMIT
LMH6503
SNOSA78E –OCTOBER 2003–REVISED APRIL 2013 www.ti.com
Figure 62. Gain Accuracy and Gain Matching Parameters Defined
NOISE
Figure 63 describes the LMH6503's output-referred spot noise density as a function of frequency with A
VMAX
=
10V/V. The plot includes all the noise contributing terms. However, with both inputs terminated in 50Ω, the input
noise contribution is minimal. At A
VMAX
= 10V/V, the LMH6503 has a typical flat-band input-referred spot noise
density (e
in
) of 6.6nV/√Hz. For applications with −3dB BW extending well into the flat-band region, the input RMS
voltage noise can be determined from the following single-pole model:
(9)
Figure 63. Output Referred Voltage Noise vs. Frequency
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