User's Manual

5
Specifications
Dimensions
RB540-a: 0.7” x 1.55” x 0.10”
RB540-c: 0.7” x 1.33” x 0.10”
RB540HM(-a/-c): 1.02” x 1.83” x 0.39”
Device Type
Embedded Bluetooth OEM module
Audio Interface
Microphone Input / Speaker Outputs
Frequency
ISM 2.4 GHz short-range radio frequency band
Frequency Range
2.400 – 2.483.5 GHz
Basic Rate (BR) Modulation
and Data Rate
GFSK
(1Mbps)
Max Transmit Power
+20dBm
Receive Sensitivity
-87dBm
Bluetooth Class
Class 1
Range
More than 100 meters (33 feet, basic rate, line of sight)
On Board Flash
8Mbits(typical), 16Mbits(optional)
Compliant Standards
Bluetooth V3.0
Security
128-bit encryption (Optional)
Supply Voltage: 3V3 pin 3.1-3.6V
On board Antenna Gain
(RB540-a & RB540HM-a)
1dBi
RF Input Impedance
50ohms
Receiving Signal Range
-87dBm to –20dBm Typical
Operating Temperature
-40ºC to +85ºC
Environmental
RoHS compliant
Current Consumption
(within 3m RF range)
Stand by: 4mA
SCO link (under calling): 43mA
A2DP streaming (music play): 45mA