PL460 datasheet(37/48 Pages) MICROCHIP

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PL460

Electrical Characteristics

Data Sheet

DS60001666D - 37

Table 11-7. Analog Power Consumption

Supply

Block

Application Case

Rating

Unit

Min.

Typ.

Max.

VDDPLL

PLL

—

1.7(1)

2.1(2)

VDDIN_AN

PGA

—

1.5(3)

2.2(4)

ADC

CENELEC-A / CENELEC-B

—

7.5(3)

10.8(4)

FCC

—

14.4(3)

20.9(4)

Notes:

1. Typical case conditions: Frequency = 216 MHz, TAMB = 25ºC, VDDPLL = 1.2V.

2. Worst case conditions: Frequency = 216 MHz, TAMB = 125ºC, VDDPLL = 1.32V.

3. Typical case conditions: TJ = 25ºC, VDDIN_AN = 3.3V.

4. Worst case conditions: TJ = 125ºC, VDDIN_AN = 3.6V.

11.6. Crystal Oscillator

The table below provides the crystal oscillator characteristics.

Table 11-8. 24 MHz Crystal Oscillator Characteristics

Parameter

Test Condition

Symbol

Rating

Unit

Min.

Typ.

Max.

Crystal Oscillator frequency

Fundamental

Xtal

MHz

Internal parasitic capacitance

Between XIN and XOUT

CPARA24M

0.6

0.7

0.8

Start-up time

tON

—

Drive level

PON

—

400

µW

Load capacitance

CLOAD

—

Important: Locate the crystal as close as possible to the XOUT and XIN pins.

The following figure shows the crystal oscillator schematic.

Figure 11-1. 24 MHz Crystal Oscillator Schematic

XIN

XOUT

PL460

CPARA24M

CPCB

CX = 2 x (CXTAL – CPARA24M – CPCB /2)

Where:

• CXTAL is the load capacitance of the crystal.

• CPARA24M is the internal parasitic impedance of the oscillator, typically 0.7 pF.

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