MCP621 datasheet(17/44 Pages) MICROCHIP

17 / 44 page

DS22188A-page 17

MCP621/2/5

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 =2kΩ to VL, CL = 50 pF, and CAL/CS =VSS.

2.6

Calibration and Chip Select Response

FIGURE 2-44:

CAL/CS Current vs. Power

Supply Voltage.

FIGURE 2-45:

CAL/CS Voltage, Output

Voltage and Supply Current (for Side A) vs. Time

with VDD =2.5V.

FIGURE 2-46:

CAL/CS Voltage, Output

Voltage and Supply Current (for Side A) vs. Time

with VDD =5.5V.

FIGURE 2-47:

CAL/CS Hysteresis vs.

Ambient Temperature.

FIGURE 2-48:

CAL/CS Turn On Time vs.

Ambient Temperature.

FIGURE 2-49:

CAL/CS’s Pull-down

Resistor (RPD) vs. Ambient Temperature.

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

Power Supply Voltage (V)

CAL/CS = VDD

-1

Time (ms)

-12

-10

-8

-6

-4

-2

VDD = 2.5V

G = 1

VL = 0V

Op Amp

turns on

CAL/CS

Op Amp

turns off

Calibration

starts

IDD

VOUT

-2

Time (ms)

-12

-10

-8

-6

-4

-2

VDD = 5.5V

G = 1

VL = 0V

Op Amp

turns on

CAL/CS

Op Amp

turns off

Calibration

starts

IDD

VOUT

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

-50

-25

255075

100

125

Ambient Temperature (°C)

VDD = 2.5V

VDD = 5.5V

-50

-25

100

125

Ambient Temperature (°C)

-50

-25

255075

100

125

Ambient Temperature (°C)

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