RXD-433-KH Linx Technologies Inc, RXD-433-KH Datasheet - Page 3

• Manufacturer Part Number: RXD-433-KH
• Description: RECEIVER RF 433MHZ SMT
• Manufacturer: Linx Technologies Inc
• Series: KHr

Specifications of RXD-433-KH

• Frequency: 433MHz
• Sensitivity: -102dBm
• Data Rate - Maximum: 5 kbps
• Modulation Or Protocol: ASK, OOK
• Applications: Garage Openers, RKE, Security Alarms
• Current - Receiving: 5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 70°C
• Package / Case: Non-Standard SMD
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Memory Size: -

PIN ASSIGNMENTS
Figure 7: KH Series Receiver Pinout (Top View)
PIN DESCRIPTIONS
Page 4
2, 3, 7, 8,
9, 12, 13,
Pin #
15-24
14
10
11
25
26
27
28
1
4
5
6
Name
D0-D7
A0-A9
DATA
RF IN
GND
PDN
GND
V
NC
NC
NC
VT
CC
Power Down. Pulling this line low will place the receiver into
a low-current state. The module will not be able to receive a
will be set to replicate the state of the transmitter’s address
Data Output Lines. Upon a valid transmission, these lines
Address Lines. The state of these lines must match the
Valid Transmission. This line will go high when a valid
state of the transmitter’s address lines in order for a
Data output of the receiver prior to the encoder.
10
11
12
13
14
No Connection. For physical support only.
No Connection. For physical support only.
No Connection. For physical support only.
1
2
3
4
5
6
7
8
9
NC
D0
D1
GND
VCC
PDN
D2
D3
D4
DATA
VT
D5
D6
D7
transmission to be accepted.
transmission is received.
signal in this state.
GND
ANT
50-ohm RF Input
Description
Analog Ground
Supply Voltage
Analog Ground
NC
NC
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
28
27
26
25
24
23
22
21
20
19
18
17
16
15
lines.
MODULE DESCRIPTION
Figure 8: KH Series Receiver Block Diagram
THEORY OF OPERATION
50Ω RF IN
The KH Series module combines the popular Linx LC Series receiver with a
decoder IC in a convenient SMD package. The module is ideal for general-
purpose remote control and command applications. When paired with a
matching Linx KH Series transmitter/encoder, a highly reliable RF link is formed,
capable of transferring control and command data over line-of-sight distances in
excess of 300 feet. The on-board receiver/decoder combination provides eight
switched outputs that correspond to the state of the data lines on the
transmitter’s encoder. Ten tri-state address lines are also provided to allow up to
59,049 (3
(Ant.)
The KH Series receiver module is designed to receive transmissions from a
matching KH Series transmitter module or other compatible Linx transmitter
product. When transmitted data is received, the data is presented to the on-
board decoder. If the incoming address data matches the local address settings,
the decoder’s outputs are set to replicate the states of the transmitter’s data
lines.
The RF section of the KH module utilizes an advanced single-conversion
superhet design that incorporates a Surface Acoustic Wave (SAW) device, high
IF frequency, and multi-layer ceramic filters. The SAW device provides a highly
accurate Local Oscillator (LO) frequency source with excellent immunity to
frequency shift due to age or temperature. The use of SAW devices in both the
KH transmitter and receiver modules allows the receiver’s pass band to be quite
narrow, thus increasing sensitivity and reducing susceptibility to near-band
interference.
Band Select
Filter
10
) unique identification codes.
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9
pre-
amplifier
Oscillator
Detector
Buffer
Sync.
Transmission Gate Circuit
SAW Local Oscillator
Gilbert Cell
Mixer/Amp
Comparator
Collector
Decoder Stage
Divider
Data
10.7MHz
Bandpass Filter
RF Stage
Register
Limiting Amp
Shift
8-bit
Comparator
Circuit
Latch
10.7MHz
Ceramic Filter
Control
Buffer
Logic
Circuit
AND
AM Detector
D0
D1
D2
D3
D4
D5
D6
D7
Data Slicer
Page 5
DATA