RFM products are now
Murata products.
©2010-2015 by Murata Electronics N.A., Inc.
DR4000 (R) 3/31/15 Page 1 of 2 www.murata.com
Characteristic Sym Notes Minimum Typical Maximum Units
Operating Frequency fO916.3 916.7 MHz
Data Rate OOK 19.2 kbps
ASK 115.2
Transmitter Performance (OOK @ 2.4 kbps)
Peak Input Current, 3 Vdc Supply ITP 12 mA
Peak Output Power PO0.75 mW
Turn On/Turn Off Time tON/tOFF 12/6 µs
Power Supply Voltage Range VCC 2.7 3.5 Vdc
Operating Ambient Temperature TA-20 +65 °C
• 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
The DR4000 transmitter module is ideal for short-range wireless data applications where robust operation,
small size and low power consumption are required. The DR4000 utilizes Murata’s TX6000 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 DR4000 includes the
TX6000 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
Soldering Temperature (10 seconds) 230 °C
916.50 MHz
Transmitter Module
DR4000
.70
.25 .20
.165
.70
.10
DR4000 Outline Drawing
Dimensions in inches
DR4000 Pin Out
RF
GND RFIO
VCC
NC
TX IN
NC
NC
CTR0
CTR1
GND
VCC
NC
1
2
3
4
58
9
10
11
12
1314
67
GND GND
©2010-2015 by Murata Electronics N.A., Inc.
DR4000 (R) 3/31/15 Page 2 of 2 www.murata.com
Pin Desciptions
Pin Name Description
1VCC
5TX IN
The TX IN pin is connected to the transmitter TXMOD pin through a 4.7 K resistor on the circuit board. Additional series resis-
tance 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:
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 resis-
tor 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
8NC
9VCC
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.
Data In
3 Vdc
A
pplication ASK Circuit
DR4000
T/S
12345
89101112
13
14
7
6
3.3k
Application ASK Circuit
DR4000
Data In
3 Vdc
Application OOK Circuit
12345
89101112
13
14
DR4000
T/S
7
6
3.3k
DR4000
Application OOK Circuit
