MCP631 datasheet(13/42 Pages) MICROCHIP

13 / 42 page

DS22197A-page 13

MCP631/2/3/5

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 =2kΩ to VL, CL = 50 pF and CS =VSS.

2.4

Noise and Distortion

FIGURE 2-29:

Input Noise Voltage Density

vs. Frequency.

FIGURE 2-30:

Input Noise Voltage Density

vs. Input Common Mode Voltage with f = 100 Hz.

FIGURE 2-31:

Input Noise Voltage Density

vs. Input Common Mode Voltage with f = 1 MHz.

FIGURE 2-32:

Input Noise vs. Time with

0.1 Hz Filter.

FIGURE 2-33:

THD+N vs. Frequency.

1.E+0

1.E+1

1.E+2

1.E+3

1.E+4

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

Frequency (Hz)

0.1

100

10k

100k

10M

100n

1µ

10µ

10n

100

120

140

160

180

200

Common Mode Input Voltage (V)

VDD = 5.5V

VDD = 2.5V

f = 100 Hz

Common Mode Input Voltage (V)

VDD = 5.5V

VDD = 2.5V

f = 1 MHz

-20

-15

-10

-5

5 10 15 20 25 30 35 40 45 50 55 60 65

Time (min)

Representative Part

Analog NPBW = 0.1 Hz

Sample Rate = 2 SPS

VOS = -3150 µV

0.0001

0.001

0.01

0.1

1.E+2

1.E+3

1.E+4

1.E+5

Frequency (Hz)

VDD = 5.0V

VOUT = 2 VP-P

100

10k

100k

BW = 22 Hz to 80 kHz

BW = 22 Hz to > 500 kHz

G = 1 V/V

G = 11 V/V

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