HT6P237A_14 Datasheet, PDF (1/9 Pages) Holtek Semiconductor Inc – Learning RF Encoder

HT6P237A/HT6P247A
Learning RF Encoder
Features
• Operating voltage: 2.0V ~3.6V
• Average Operating Current:
♦♦ 20mA @ V_DD=3.0V, 12dBm;
♦♦ 30mA @ V_DD=3.0V, 16dBm
• Standby current: 1.0μA (Max.) @ VDD=3V
• HT6P237A codes are fully compatible with
HT6P20B
• Up to 4 data pins
• Providing 2 compound data trigger pins
• Up to 2²⁴ address codes
• 8 bit time option via 2 pin selection
• Integrated complete UHF transmitter
• Frequency range 300MHz to 450MHz
• Supports ASK/OOK modulation
• 3 output power levels 12dBm/14dBm/16dBm via
1 pin selection
• Minimal external components
• 16-Pin NSOP package
Applications
• Burglar alarm systems
• Smoke and fire alarm systems
• Car alarm systems
• Garage door remote controllers
• Home Security systems
• Other remote control systems
General Description
The HT6P2x7A devices form a series of data encoders
which include fully integrated ASK transmitters for
remote control system applications. These highly
integrated devices are true “switch-in, antenna-out”
monolithic devices. They encode 22 or 28 bits of
information and then serially transmits the data out
on their PAOUT pin upon receipt of transmission
enable (Data pins: D0~D3 or B0~B1) signals. They
encode address and data information into a coded
waveform suitable for modulation and transmission
using their integrated RF circuits. The devices offer
high performance in two areas: power delivery
and operating temperature. In terms of power, the
devices are capable of delivering +16 dBm into a 50Ω
load. This power level enables a small form factor
transmitter such as a key fob transmitter to operate
with a maximum distance. In terms of temperature,
they can operate from -40˚C to 85˚C with very little
frequency drift. They additionally offer exceptional
ease of use and can easily pass FCC/ETSI regulations.
One only needs a few additional components for
harmonic filtering.The devices are used with ASK/
OOK (Amplitude Shift Keying/On-Off Keyed) UHF
receiver types from wide-band super-regenerative
radios to narrow-band, high performance super-
heterodyne receivers to form a complete remote
system.
Block Diagram
VDD
O PS
BTS1
BTS0
D3
D2
D1
D0
B0
B1
Rev. 1.10
D iv id e r
D a ta
L a tc h
S y s te m T im in g
C o n tro l
U n it
C ode
G e n e r a tio n
X ta l
O s c illa to r
E n a b le
C o n tro l
M ix
A d d re s s /D a ta
3 2 *P L L
PA
VSS
DOUT
PVSS
1
X IN
XO UT
PAO UT
November 10, 2014