Datasheet

© 2009-2011 Microchip Technology Inc. DS22188C-page 15
MCP621/1S/2/3/4/5/9
Note: Unless otherwise indicated, T
A
=+25°C, V
DD
= +2.5V to 5.5V, V
SS
= GND, V
CM
=V
DD
/3, V
OUT
=V
DD
/2,
V
L
=V
DD
/2, R
L
=2kΩ to V
L
, C
L
= 50 pF, and CAL/CS =V
SS
.
FIGURE 2-30: Gain Peaking vs.
Normalized Capacitive Load.
FIGURE 2-31: Channel-to-Channel
Separation vs. Frequency.
0
1
2
3
4
5
6
7
8
9
10
1.0E-11 1.0E-10 1.0E-09
Normalized Capacitive Load; C
L
/G
N
(F)
Gain Peaking (dB)
10p
100p 1n
G
N
= 1 V/
V
G
N
= 2 V/
V
G
N
≥
4 V/
V
50
60
70
80
90
100
110
120
130
140
150
1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency (Hz)
Channel-to-Channel
Separation (dB)
1k
10k 100k
RTI
V
CM
= V
DD
/2
G = +1 V/V
R
S
= 0Ω
R
S
= 1 kΩ
R
S
= 10 kΩ
R
S
= 100 kΩ
1M
10M