ATR0601_06 ATMEL [ATMEL Corporation], ATR0601_06 Datasheet - Page 11

• Manufacturer Part Number: ATR0601_06
• Description: GPS Front-end IC
• Manufacturer: ATMEL [ATMEL Corporation]

4866G–GPS–11/06
Figure 10-5. Recommended IF-filter: Layout versus Schematic
Note:
Table 10-1.
Parameter
Frequency Characteristics
Fundamental Frequency
Calibration tolerance
Frequency deviation
Temperature range
Electrical
Load capacitance (CL)
Equivalent Series Resistance (ESR)
Fundamental
Mutual inductance between the four inductors Lc - Lf plays an important role in the IF-filter charac-
teristics. In any design, the layout arrangement shown in
resembled as close as possible. Measures: A = 2.8 mm; B = 1.4 mm; Lc - Lf: Wirewound SMD
inductors, 0603 size. (Please see
Specification of GPS Crystals Appropriate for the Application Example Shown in
Figure 10-1 on page 9
13 14 15 16
Ca
Lc
Le
A
Cb
Comment
Nominal frequency referenced to
25°C
Frequency at 23°C ±2°C
Over operating temperature range
Operating temperature range
Specification
Ld
Lf
Table
B
11-1).
Lc Ld
13 14
4.7nF
Figure 10-5 on page 11
Ca
–40.0
Min.
18.5
VCC
7
Le
15
68
Cb
Lf
16
23.104
Typ.
12
ATR0601
+85.0
Max.
15.0
19.5
should be
7.0
23
Units
±ppm
±ppm
MHz
pF
°C
11