74AUP1Z125GM,115 NXP Semiconductors, 74AUP1Z125GM,115 Datasheet - Page 23

• Manufacturer Part Number: 74AUP1Z125GM,115
• Description: IC XTAL DRIVER LP 6-XSON
• Manufacturer: NXP Semiconductors
• Series: 74AUPr

Specifications of 74AUP1Z125GM,115

• Logic Type: Inverter, X-Tal Driver
• Supply Voltage: 0.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Bits: -
• Lead Free Status / Rohs Status: Details
• Other names: 74AUP1Z125GM-G; 74AUP1Z125GM-G; 935280525115

NXP Semiconductors
74AUP1Z125
Product data sheet
13.1.2 Testing
After the calculations are performed for a particular crystal, the oscillator circuit should be
tested. The following simple checks will verify the prototype design of a crystal controlled
oscillator circuit. Perform them after laying out the board:
As the 74AUP1Z125 isolates the system loading, once the design is optimized, the single
layout may work in multiple applications for any given crystal.
Fig 14. Crystal oscillator configuration
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•
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Test the oscillator over worst-case conditions (lowest supply voltage, worst-case
crystal and highest operating temperature). Adding series and parallel resistors can
simulate a worse case crystal.
Insure that the circuit does not oscillate without the crystal.
Check the frequency stability over a supply range greater than that which is likely to
occur during normal operation.
Check that the start-up time is within system requirements.
All information provided in this document is subject to legal disclaimers.
Low-power X-tal driver with enable and internal resistor; 3-state
Rev. 3 — 9 September 2010
74AUP1GU04
X1
C 2
portion
R bias
Xtal
X2
R 1
C 1
74AUP1G125
portion
Y
system
load
C sys
001aai549
74AUP1Z125
R sys
© NXP B.V. 2010. All rights reserved.
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