LMX9820ASM NSC [National Semiconductor], LMX9820ASM Datasheet - Page 21

• Manufacturer Part Number: LMX9820ASM
• Description: Bluetooth Serial Port Module
• Manufacturer: NSC [National Semiconductor]

Revision 1.0
8.0 Digital Smart Radio
8.7.2 TCXO (Temperature Compensated Crystal
Oscillator)
The LMX9820A also can operate with an external TCXO
(Temperature Compensated Crystal Oscillator). The TCXO
signal is directly connected to the CLK+, shown in Table 23
on page 21.
1. Input Impedance
The LMX9820A CLK+ pin has in input impedance of 2 pF
capacitance in parallel with >400k resistance.
2. NKG3184A TCXO
The LMX9820A has also been tested with the NKG3184A
TCXO. See Table 23 on page 21.
Figure 12. Frequency Offset with 12 pF/12 pF Capacitors
Figure 13. Frequency Offset with 10 pF/10 pF Capacitors
(Continued)
21
Package
Frequency
Stability
Output Load
Current Consumption
Output Level
Storage Temperature
DC Cut Capacitor
Specification
Table 23. TCXO NKG3184A
5.0 x 3.2 x 1.4 mm (4 pads)
12.000 MHz
18 ppm at -30 to +85°C
(inclusive of all conditions)
10k /13 pF
2.0 mA
0.3Vp-p to 2.0Vp-p
-40 to +85°C
Included in VC-TCXO
Value
www.national.com