BC2401 Datasheet, PDF (3/7 Pages) Holtek Semiconductor Inc – 315/433MHz Super-Regenerative OOK Rx IC

BC2401
D.C. Characteristics
Symbol
Parameter
VDD
Operating voltage
IDD
Operating current
IOH
DOUT source current
IOL
DOUT sink current
Test Conditions
VDD
Conditions
Min.
—
—
4.5
5V Continuous Operation, fRX = 433.92MHz —
5V VOH = 0.9VDD
—
5V VOL = 0.1VDD
—
Typ.
5.0
3.5
-7
10
Ta=25°C
Max. Unit
5.5
V
— mA
— mA
— mA
A.C. Characteristics
Symbol
Parameter
PSENS Receiver sensitivity
tON
Start-up time
fRX
Receiver Input Frequency Range
BW
RX Bandwidth
SR
Symbol Rate
Ta=25°C, Freq. band=315/433MHz and RL=50Ω load matched
Test Conditions
VDD
Conditions
fRX = 315/433.92MHz,
5V
Symbol rate = 5Ksps,
BER is 0.1% (PN9 data)
Instrument: keysight E4438C
5V
Time for valid signal detection
after power on
—
—
5V
—
5V 50% duty cycle
Min.
—
—
—
—
—
—
Typ.
-97
5
315
433
1
5
Max. Unit
— dBm
— mS
— MHz
— MHz
— MHz
— Ksps
Functional Description
The device is a single chip OOK (ON-OFF Keyed)
RF receiver IC. It is in effect a genuine RF antenna-
in to digital data-out fully integrated IC. As all the
RF and IF circuitry are integrated within the device
this results in a huge reduction in the required
number of external components. Having such a high
degree of functional integration greatly reduces both
product and manufacturing costs and provides higher
reliability. The simple connection of an antenna,
and some tuned LC circuits allows the device to
detect RF at its resonant frequency. Then by using an
internal low noise amplifier and super-regeneration
techniques, the demodulator can generate data on the
digital data output pin.
An antenna matching circuit is supplied on the RFIN
pin and an LC tank circuit is connected to the L1 and
L2 pins to generate the local oscillator frequency. A
fully internal high frequency oscillator in the device
is used to demodulate the data from the intermediate
frequency signal, thus eliminated the need for any
further filtering components. The addition of a
decoupling capacitor on each of the power is then all
that is needed to complete the circuit.
The device is supplied in an 8-pin package making it
suitable for applications where space may be limited.
Rev. 1.00
3
January 24, 2017