Rainbow-electronics ATR0635P1 Manual do Utilizador descarregar pdf (Página 25)

25

4979D–GPS–06/08

ATR0635P1

5. Crystals

The ATR0635P1 requires a GPS TCXO. The reference frequency is 23.104 MHz. By connecting

an optional RTC crystal, different power modes are available. The reference frequency is 32.768

kHz.

5.1 GPS

Figure 5-1. Equivalent Application Examples Using a GPS TCXO (See Table 5-1 on page 26)

Figure 5-2. Application Example Using an External Reference Frequency and Balanced

Inputs (See Table 5-2 on page 26)

B2

A2

B3

A1

X

NX

XTO

NXTO

22 pF

4.7 pF

12 pF

TCXO

Do not

connect

B2

A2

B3

A1

X

NX

XTO

NXTO

22 pF

4.7 pF

12 pF

TCXO

Do not

connect

B2

A2

B3

A1

X

NX

XTO

NXTO

Do not

connect

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