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DR4001 Datasheet(PDF) 2 Page - Murata Manufacturing Co., Ltd.

Part No. DR4001
Description  868.35 MHz Transmitter Module
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Manufacturer  MURATA [Murata Manufacturing Co., Ltd.]
Direct Link  http://www.murata.com
Logo MURATA - Murata Manufacturing Co., Ltd.

DR4001 Datasheet(HTML) 2 Page - Murata Manufacturing Co., Ltd.

  DR4001 Datasheet HTML 1Page - Murata Manufacturing Co., Ltd. DR4001 Datasheet HTML 2Page - Murata Manufacturing Co., Ltd.  
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E-mail: info@rfm.com
Page 2 of 2
©2008 by RF Monolithics, Inc.
DR4001 - 4/8/08
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 P
O 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.
Da t a I n
3 V d c
A ppl i c a t i on O O K C i r c ui t
1
2
345
8
9
10
11
12
13
14
D R 4000
T/ S
7
6
3. 3 k
DR4001
Application OOK Circuit
D a ta In
3 V d c
Ap p li c a t i o n AS K C i r c u i t
DR 4 0 0 0
T/ S
12
3
4
5
8
9
10
11
12
13
14
7
6
3.3 k
Application ASK Circuit
DR4001


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