CX5032GB54000H0PESZZ AVX Corporation, CX5032GB54000H0PESZZ Datasheet - Page 24

• Manufacturer Part Number: CX5032GB54000H0PESZZ
• Description: CRYSTAL, SM, CX-53F, 54MHZ
• Manufacturer: AVX Corporation
• Series: CX5032GBr

Specifications of CX5032GB54000H0PESZZ

• Operating Temperature Range: -10°C To +70°C
• Crystal Mounting Type: SMD
• Crystal Case Type: 5
• Frequency: 54MHz
• Frequency Tolerance: ± 50ppm
• Load Capacitance: 12pF
• Frequency Stability: ± 50ppm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(5) Method of checking oscillation circuit
(6) Load capacitance and oscillation frequency of transistor/fundamental crystal oscillation circuit
①Some ICs have a low upper-limit value of usable frequency, so refer to individual IC catalog to make sure that the IC can
②The following figure shows an example of a CMOS oscillation circuit. Check resistance Rsup is connected in series with
③Using a spectrum analyzer or oscilloscope, check that every oscillation is normally activated while turning the power on
④When oscillation is normal, remove the check resistance before using the crystal circuit.
⑤If oscillation is unstable or is not generated, gradually decrease the values of
⑥If normal oscillation cannot be generated near 10MHz or near 20MHz, replace the IC with a new one suitable for higher
Viewed from the connection terminals of a crystal unit, the load capacitance C
of
ignored. Since trimmer capacitor is adjusted to C
of C
When these calculation results are substituted for the following equation for load resonance frequency, the oscillation
frequency can be obtained.
oscillate a crystal unit with an adequate negative resistance.
the crystal unit to check the negative resistance. Use 3 to 22pF for
resistance.
and off several times. For oscillation circuits with no power regulator ICs, carefully check changes in the negative
resistance against supply voltage and in frequencies.
frequencies.
C
L
1
, C
at this time can be obtained from the following equation.
t
,
C
Handling Notes
2
, and
C
3
C
1
if stray capacitance of the circuit and the capacitance between base and emitter of the transistor are
C
f
L
R
L
f

MIN. 
f
s
R
sup
2 (C
C
0
C
C
1
C
1
C
1
2
L
)
T
1

C
1
T
2
= MIN. to MAX. for zero adjustment of the oscillation frequency, the value

C
1
3
Frequency range
10.1 to 14.0MHz
14.1 to 20.0MHz
6.1 to 10.0MHz
3.5 to 4.5MHz
4.6 to 6.0MHz
1
- 57 -
to C
L
MAX.
C
1
and
C
1
C
1
C
L
2
of an oscillation circuit is generally comprised
C
, and see the table below for values of check
T
1
Values of check resistance
and

C
1
C
2
2

until normal oscillation is obtained.
1.5k
1.0k
800
500
400
C
1
3
1