MCP3909 datasheet(11/44 Pages) MICROCHIP

11 / 44 page

DS22025B-page 11

MCP3909

Note: Unless otherwise specified, DVDD, AVDD = 5V; AGND, DGND = 0V; VREF = Internal, HPF = 1 (AC mode),

MCLK = 3.58 MHz, CH1 input = 660 mVP-P at 50 Hz, CH0 amplitude sweeps at 50 Hz.

FIGURE 2-13:

Active Power Measurement

Error over VDD, Internal VREF (G = 16, PF = 1).

FIGURE 2-14:

Active Power Measurement

Error over VDD, External VREF (G = 1, PF = 1).

FIGURE 2-15:

Active Power Measurement

Error vs. Input Frequency (G = 16).

FIGURE 2-16:

Active Power Measurement

Error with External VREF (G = 1, PF = 1).

FIGURE 2-17:

Active Power Measurement

Error with External VREF (G = 1, PF = 0.5).

FIGURE 2-18:

Active Power Measurement

Error with External VREF (G = 2, PF = 1).

-0.15

-0.1

-0.05

0.05

0.1

0.15

0.2

0.25

0.3

0.0001

0.0010

0.0100

0.1000

1.0000

CH0 Vp-p Amplitude (V)

VDD=4.75V

VDD=5.0V

VDD=4.5V

VDD=5.25V

VDD=5.5V

-0.1

-0.05

0.05

0.1

0.15

0.2

0.0001

0.0010

0.0100

0.1000

1.0000

CH0 Vp-p Amplitude (V)

VDD=4.5V

VDD=4.75V

VDD=5.0V

VDD=5.25V

VDD=5.5V

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

Frequency (Hz)

PF = 0.5

PF = 1

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.0001

0.0010

0.0100

0.1000

1.0000

CH0 Vp-p Amplitude (V)

+85°C

+25°C

- 40°C

-1

-0.8

-0.6

-0.4

-0.2

0.2

0.4

0.6

0.8

0.0001

0.0010

0.0100

0.1000

1.0000

CH1 Vp-p Amplitude (V)

+85°C

+25°C

-40°C

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

0.0001

0.0010

0.0100

0.1000

1.0000

CH0 Vp-p Amplitude (V)

+85°C

+25°C

- 40°C

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