LMX9820ASM datasheet(21/44 Pages) NSC

No. de pieza	LMX9820ASM

Descripción Electrónicos	Bluetooth Serial Port Module

PDF	44 Pages

Scroll/Zoom	100%

Fabricante Electrónico	NSC [National Semiconductor (TI)]

Página de inicio	http://www.national.com

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Revision 1.0

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8.0 Digital Smart Radio (Continued)

Figure 12. Frequency Offset with 12 pF/12 pF Capacitors

Figure 13. Frequency Offset with 10 pF/10 pF Capacitors

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

Ω resistance.

2. NKG3184A TCXO

The LMX9820A has also been tested with the NKG3184A

TCXO. See Table 23 on page 21.

Table 23. TCXO NKG3184A

Specification

Value

Package

5.0 x 3.2 x 1.4 mm (4 pads)

Frequency

12.000 MHz

Stability

18 ppm at -30 to +85°C

(inclusive of all conditions)

Output Load

10k

Ω/13 pF

Current Consumption

2.0 mA

Output Level

0.3Vp-p to 2.0Vp-p

Storage Temperature

-40 to +85°C

DC Cut Capacitor

Included in VC-TCXO

LMX9820ASM Datasheet(PDF) 21 Page - National Semiconductor (TI)