BC5161/BC5162
2.4GHz GFSK Transmitter with Encoder
Features
• Frequency band: 2402MHz~2480MHz
• Complete 2.4GHz GFSK (BT=0.5) modulation
transmitter
• Operating voltage range: VDD=2.0V~3.6V
• Low Voltage Detection
• Programmable data rate: 125/250/500Kbps
• Programmable TX output power:
up to 5dBm (Max. +8dBm)
• FUSE Data Memory: 320 bits
• Low current consumption
♦ Deep sleep mode current: 0.5μA
♦ I(LIRC_ON) current: 2.5μA
♦ TX current consumption:
Typ. 15.5mA @ 0dBm TX power
• On-chip VCO and Fractional-N synthesizer with
integrated loop filter
• Support 32MHz crystal (±20ppm)
• Interface
♦ Key mode (BC5161) – 2 key inputs for 8-pin
SOP-EP, 8 key inputs for 16-pin QFN
♦ I2C mode (BC5162)
• FCC/ETSI Compliant
• Package types: 8-pin SOP-EP, 16-pin QFN
General Description
The BC516x devices are high performance and low
cost GFSK transmitters for wireless applications in
the 2402MHz~2480MHz frequency bands. They
incorporate a highly integrated 2.4GHz transmitter,
a baseband modulator and an Encoder with
programmable data rates from 125Kbps to 500Kbps.
The frequency hopping function, which is informal
and transmits the same data to each selected channel,
can overcome the crowded frequencies.
External host MCU can access the BC5162 through
an I2C interface. However, the BC5161 has Key/WOT
modes, so it can be used for unidirectional wireless
applications such as Student ID CARD, motorcycle/
scooter keyless, etc. without MCU control.
Selection Table
Part No.
BC5161
BC5162
VDD
2.0V~3.6V
Frequency
Modulation
2402MHz~2480MHz
GFSK
Data Rate
125/250/500Kbps
Part No.
BC5161
BC5162
Output Power
-10dBm~+8dBm
Cystal
32MHz
Key Mode
√
—
Interface
—
I2C
Package
8SOP-EP, 16QFN
8SOP-EP
Block Diagram
RFOUT
AVDD
XOIN
PA
Loop
Filter
CP/PFD
MMD
DSM
Synthesizer
Digital
Modulator
Code
Generator
LIRC
FUSE
BC5161
D0~D7
BC5162
SDA
SCL
DVDD
EP
Rev. 1.00
1
September 21, 2020
