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Modules Technical Comparison

 BT-23BT-22 BT-21BT-11
Description Micro-sized with antennaMicro-sized General purposeLong range
Comm. range20 meters 20 meters30 meters120 meters
Size11.6 x 13.5mm10.4 x 13.5mm 15 x 27mm15 x 27mm
GPIO6 GPIO
(2 ADC, 1 DAC)
4 GPIO
(1 ADC)
16 GPIO (4 ADC) 16 GPIO
(4 ADC, 1 DAC)
Baud rate3.25M baud 921k baud3.25M baud
AntennaInternal ChipExternal PinInternal Chip, or U.FL Connector Internal Chip, or U.FL Connector
Max data throughput2.2Mbps 2.2Mbps2.2Mbps2.2Mbps
RF Tx Output+7dBm+7dBm+6dBm+8dBm
RF Rx Sensitivity-85dBm-85dBm-84dBm-88dBm>
Upper Layer StackAmp'ed UP
AT Command InterfaceabSerial
FirmwareSPP, OBEX and DUN
InterfaceSPI and I2CUART, SPI, I2C, USB
Input Voltage2.7V - 3.6V2.7V - 3.6V 2.8V - 3.4V 2.7V - 3.6V
Temperature-40 + 80-40 + 80-30 + 80 -40 + 85
Sleep Power Consumption3.5mA3.5mA110uA 60uA
Pin Count14142424
Class21
Processor ARM Cortex/70Mhz/256K
Flash, 48K RAM
ARM7/50Mhz/256K Flash, 64K RAMARM Cortex
70Mhz/256K Flash, 48K RAM


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