CB-OBS411X-04-0 ConnectBlue, CB-OBS411X-04-0 Datasheet - Page 30

• Manufacturer Part Number: CB-OBS411X-04-0
• Description: BLUETOOTH V2.1+EDR MODULE 4DBM
• Manufacturer: ConnectBlue

Specifications of CB-OBS411X-04-0

• Frequency: 2.4GHz
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: Bluetooth v2.1+EDR, Class 2 & 3
• Applications: General Purpose
• Power - Output: 4dBm
• Sensitivity: -84dBm
• Voltage - Supply: 3 V ~ 6 V
• Current - Receiving: 15.5mA
• Current - Transmitting: 25.1mA
• Data Interface: Solder Pads, 2 x 20mm, 1 mm pitch
• Antenna Connector: U.FL
• Operating Temperature: -30°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Other names: 809-1034

connectBlue
Copyright © 2010 connectBlue AB
Usually only a subset of the available functionality is of interest to the designer. In addition, depending on the host system, the electrical
interface can be designed in many ways. The designer can use the step-by-step guide in this chapter as an aid in the design process.
Table 12: Step-by-step guide with Yes and No answers.
This section contains design examples for all interfaces on J2, J3, and J6. The connector type that suits a specific application depends on
the needed signal and the preferred interface type (board-to-board or SMD).
A 3.0/3.3V host system can be connected directly to the logic level pins (BLUE, UART-TxD / UART-RxD etc). A serial 100Ohm resistor
shall be used (see Figure 12) for protection, see the
A 5V host system can easily be adjusted to the logic levels.
The module input signals can use a resistive divider (1.8kOhm/2.2kOhm) to adjust the levels (See Figure 12). This is applicable for
speeds up to 115.2kBits/s. The divider can be improved by adding a logic buffer (74HCT08) for higher speeds (see Figure 13). The
resistor dividers consume current and a better solution could be to use the 5V input tolerant gates in the LVC family. The LVC gates are
available in singel, dual and quad gates packages (e.g. 74LVC1G08, 74LVC2G08 and 74LVC08). The LVC gates need to be power
supplied with the module signal voltage levels (see
used for suppling the interface circuits. Notice that the VCC_2V85 output voltage supply not is available on all connectBlue modules e.g.
if the application is designed to be used with different pin compatible connectBlue modules.
The LVC gates could maybe also be used for output signals if the host input signals are TTL compatible (V
can not be used on 5V CMOS input signals.
10 Application Notes
10.1 Step-by-Step Guide
10.2 Design Examples
Question
Are you going to integrate the OEM
Serial Port Adapter in a metal
enclosure?
Do you wish to use logic level when
communicating with the OEM Serial Port
Adapter?
Do you want to use RS232 as the
physical serial interface?
Do you wish to connect LEDs to the
OEM Serial Port Adapter?
Do you want to detect the status of the
module with a controller?
Do you wish to utilize the restore switch?
Do you wish to utilize the Function
switch ("Connect on external signal")?
Do you want to manually reset the
module?
10.2.1 Logic Levels
10.2.1.1 3.0/3.3 voltage host system
10.2.1.2 5 voltage host system
10.2.1.2.1 Module input signals in a 5V host system
Yes
Use one of the OEM Serial Ports Adapters with
antenna connector for external antenna
(cB-OBS411x).
See section
See section
design.
See section
examples for connecting the LEDs.
See section
and section
design.
See section
See section
See section
double row connector. See section
connectors
Input/Output signals
Characteristics
.
LED and Switch Design
Logic level Mode
External RS232 driver
LED and Switch Design
Operating Status
GREEN/Switch-1
Switch-0 Signal
Reset
for electrical design. Use a
section for logic levels characteristics.
). The VCC_2V85 pin (see the
for electrical design.
for electrical design.
for status detection
for electrical design.
for electrical
Double row
for electrical
for design
No
Go on to next point.
See section
and
electrical design.
Go on to next point.
Go on to next point.
Go on to next point.
Go on to next point.
Go on to next point.
External RS422 driver
Pin Description
IN_HIGH_MIN
External RS232 driver
section) can be
= 2V). LVC gate
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for