Murata DR4103 303.825 mhz transmitter module Datasheet

DEVELOPMENT KIT
(Info Click here)
DR4103
•
•
•
•
Designed for Short-Range Wireless Data Communications
Supports up to 115.2 kbps Encoded Data Transmissions
3 V, Low Current Operation plus Sleep Mode
Ready to Use OEM Module
303.825 MHz
Transmitter
Module
The DR4103 transmitter module is ideal for short-range wireless data applications where robust operation,
small size and low power consumption are required. The DR4103 utilizes RFM’s TX5003 amplifier-sequenced
hybrid (ASH) architecture to achieve this unique blend of characteristics. The transmitter includes provisions
for on-off keyed (OOK) and ASK modulation. The transmitter employs SAW filtering to suppress output
harmonics, facilitating compliance with FCC 15.249 and similar regulations. The DR4103 includes the TX5003
plus all configuration components in a ready-to-use PCB assembly, excellent for prototyping and intermediate
volume production runs.
Absolute Maximum Ratings
Rating
Value
Units
Power Supply and All Input/Output Pins
-0.3 to +4.0
V
Non-Operating Case Temperature
-50 to +100
°C
230
°C
Soldering Temperature (10 seconds)
Electrical Characteristics, 2.4 kbps On-Off Keyed
Characteristic
Operating Frequency
Sym
fO
Data Rate
Notes
Minimum
Typical
303.625
Maximum
Units
304.025
MHz
OOK
19.2
kbps
ASK
115.2
Transmitter Performance (OOK @ 2.4 kbps)
Peak Input Current, 3 Vdc Supply
ITP
Peak Output Power
PO
Turn On/Turn Off Time
Power Supply Voltage Range
Operating Ambient Temperature
RFIO
14
13
1
12
CTR0
NC
2
11
CTR1
NC
3
10
GND
NC
4
9
VCC
TX IN
5
8
NC
7
GND
GND
www.RFM.com
E-mail: [email protected]
©2008 by RF Monolithics, Inc.
tON/tOFF
12/6
µs
VCC
2.7
3.5
Vdc
TA
-20
+65
°C
.30
VCC
6
mA
mW
DR4103 Outline Drawing
DR4103
Pin
Out
DR4101
Pin
Out
RF
GND
12
0.75
.80
.20
.165
.10
.70
Page 1 of 2
DR4103 - 4/8/08
Pin Desciptions
Pin
Name
1
VCC
Description
The TX IN pin is connected to the transmitter TXMOD pin through a 4.7 K resistor on the circuit board. Additional series resistance will often be required between the modulation source and the TX IN pin, depending on the desired output power and
peak modulation voltage (3.3 K typical for a peak modulation voltage of 3 volts). Saturated output power requires about 450 µA
of drive current. Peak output power PO for a 3 Vdc supply is approximately:
5
TX IN
PO = 4.8*((VTXH - 0.9)/(RM + 4.7))2, where PO is in mW, peak modulation voltage VTXH is in volts and external modulation resistor RM is in kilohms
This pin must be held low in the receive and sleep modes. Please refer to section 2.9 of the ASH Transceiver Designer's Guide
for additional information.
6, 7
GND
8
NC
9
VCC
This is the positive supply voltage pin for the module. The operating voltage range is 2.7 to 3.5 Vdc. It is also possible to use
Pin 1 as the Vcc input. Please refer to the Pin 1 description above.
10
GND
This is the supply voltage return pin.
11
CTR1
CTR1 and CTR0 select the transmit modes. CTR1 high and CTR0 low place the unit in the ASK transmit mode. CTR1 low and
CTR0 high place the unit in the OOK transmit mode. CTR1 and CTR0 both low place the unit in the power down (sleep) mode.
CTR1 is a high-impedance input (CMOS compatible). An input voltage of 0 to 200 mV is interpreted as a logic low. An input
voltage of Vcc - 200 mV or greater is interpreted as a logic high. An input voltage greater than Vcc + 200 mV should not be
applied to this pin. This pin must be held at a logic level; it cannot be left unconnected.
12
CTR0
(T/S)
“T” =1 for transmission, “S” =0 for sleep mode
13
RFIO
RFIO is the RF output pin. A matching circuit for a 50 ohm load (antenna) is implemented on the circuit board between this pin
and the transceiver SAW filter transducer.
14
RF GND
This pin is the RF ground (return) to be used in conjunction with the RFIO pin. For example, when connecting the module to an
external antenna, the coaxial cable ground is connected this pin and the coaxial cable center conductor is connected to RFIO.
Application OOK Circuit
A p p lic a tio n O O K C ir c u it
T /S
3 Vdc
T /S
12
Application ASK Circuit
A p p l ic a t i o n A S K C i r c u i t
11
10
9
13
12
8
7
13
6
14
11
1
2
3
4
10
9
8
7
DR4103
D R 4000
DR4103
D R 4000
14
3 Vdc
5
1
6
2
3
4
5
D a ta In
3 .3 k
www.RFM.com
E-mail: [email protected]
©2008 by RF Monolithics, Inc.
D a ta In
3 .3 k
Page 2 of 2
DR4103 - 4/8/08
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