LMX9838SB/NOPB National Semiconductor, LMX9838SB/NOPB Datasheet - Page 23

• Manufacturer Part Number: LMX9838SB/NOPB
• Description: IC MODULE BLUETOOTH PORT 70LTCC
• Manufacturer: National Semiconductor

Specifications of LMX9838SB/NOPB

• Frequency: 2.4GHz
• Data Rate - Maximum: 704kbps
• Modulation Or Protocol: Bluetooth v2.0, Class 2
• Applications: PDA's, POS Terminals
• Power - Output: 0dBm
• Sensitivity: -80dBm
• Voltage - Supply: 2.5 V ~ 3.6 V
• Current - Receiving: 65mA
• Current - Transmitting: 65mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 70-LTCC
• Physical Interfaces: UART
• Data Rate: 704Kbps
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 4 - 72 Hours
• Frequency Max: 2480MHz
• Filter Terminals: SMD
• Frequency Min: 2402MHz
• No. Of Pins: 70
• Rohs Compliant: Yes
• For Use With: LMX9838DONGLE - KIT DESIGN DONGLE FOR LMX9838
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LMX9838SB

17.0 Application Notes
The different possibilities to power supply the LMX9838 de-
pend on the IO interface logic level.
Figure 9 represents an example of system functional
schematic for the LMX9838 using a 3.0V to 3.3V IO interface.
Figure 10 represents an example of system functional
schematic for the LMX9838 using a 2.5V to 3.0V IO interface.
Figure 11 represents an example of system functional
schematic for the LMX9838 using a 1.8V to 2.5V IO interface.
Figure 12 represents an example of system functional
schematic for the LMX9838 using a 1.8V IO interface.
Capacitor values C1 and C2 may vary depending on design and crystal manufacturer specification.
FIGURE 9. 3.0V to 3.3V Example Functional System Schematic
Notes:
23
17.1 FILTERED POWER SUPPLY
It is important to provide the LMX9838 with adequate ground
planes and a filtered power supply. It is highly recommended
that a 2.2 μF and a 100 nF bypass capacitor be placed as
close as possible to the power supply pins V
V
17.2 FREQUENCY AND BAUDRATE SELECTION
OP3, OP4, OP5 can be strapped to the host logic 0 and 1
levels to set the host interface boot-up configuration. Alterna-
tively all OP3, OP4, OP5 can be hardwired over 1k Ohm
pullup/pulldown resistors. See Table 7.
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