MCP651/2/5
Note: Unless otherwise indicated, TA = +25°C, VDD = +2.5V to 5.5V, VSS = GND, VCM = VDD/3, VOUT = VDD/2,
VL = VDD/2, RL = 1 kΩ to VL, CL = 20 pF, and CAL/CS = VSS
.
2.4
Input Noise and Distortion
1.E+4
10μ
20
15
10
5
Representative Part
NPBW = 0.1 Hz
1.E+3
1μ
0
1.E+2
100n
-5
-10
-15
-20
1.E+1
10n
1n
1.E+00.1
1
10
100 1k 10k 100k 1M 10M
0
5
10 15 20 25 30 35 40 45 50
1.E-1 1.E+0 1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6 1.E+7
Time (min)
Frequency (Hz)
FIGURE 2-32:
Input Noise Voltage Density
FIGURE 2-35:
Input Noise plus Offset vs.
vs. Frequency.
Time with 0.1 Hz Filter.
160
1
VDD = 5.0V
VDD = 2.5V
140
120
100
80
0.1
VDD = 5.5V
BW = 22 Hz to > 500 kHz
G = 1 V/V
G = 11 V/V
0.01
60
40
0.001
BW = 22 Hz to 80 kHz
20
f = 100 Hz
0
0.0001
1.E+2
100
1.E+3
1k
1.E+4
10k
1.E+5
100k
Frequency (Hz)
Common Mode Input Voltage (V)
FIGURE 2-33:
Input Noise Voltage Density
FIGURE 2-36:
THD+N vs. Frequency.
vs. Input Common Mode Voltage with f = 100 Hz.
12
11
10
9
VDD = 2.5V
8
7
VDD = 5.5V
6
5
4
3
2
1
f = 1 MHz
0
Common Mode Input Voltage (V)
FIGURE 2-34:
Input Noise Voltage Density
vs. Input Common Mode Voltage with f = 1 MHz.
DS22146A-page 14
© 2009 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
