MCP1501 datasheet(7/36 Pages) MICROCHIP

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 2015-2016 Microchip Technology Inc.

DS20005474C-page 7

MCP1501

1.1.7

INPUT CURRENT

The input current (operating current) is the current that

sinks from VIN to GND without a load current on the

output pin. This current is affected by temperature,

input voltage, output voltage, and the load current.

1.1.8

POWER SUPPLY REJECTION

RATIO

Power supply rejection ratio (PSRR) is a measure of

the change in output voltage (∆VOUT) relative to the

change in input voltage (∆VIN) over frequency.

1.1.9

LONG-TERM DRIFT

The long-term output stability is measured by exposing

the devices to an ambient temperature of +125°C, as

shown in Figure 2-18 while configured in the circuit

shown in Figure 1-1. In this test, all electrical specifica-

tions of the devices are measured periodically at

+25°C.

FIGURE 1-1:

Long-Term Drift Test Circuit.

1.1.10

OUTPUT VOLTAGE HYSTERESIS

The output voltage hysteresis is a measure of the out-

put voltage error after the powered devices are cycled

over the entire operating temperature range. The

amount of hysteresis can be quantified by measuring

the change in the +25°C output voltage after tempera-

ture excursions from +25°C to +125°C to +25°C, and

also from +25°C to -40°C to +25°C.

VIN

GND

VOUT

Power

Signal In

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