DR4000 [RFM]
916.50 MHz Transmitter Module; 916.50兆赫发射模块
| 型号： | DR4000 |
| 厂家： | 
RF MONOLITHICS, INC |
| 描述： | 916.50 MHz Transmitter Module |
| 文件： | 总2页 (文件大小：105K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Preliminary
DR4000
•
•
•
•
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
916.50 MHz
Transmitter
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 RFM’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
Soldering Temperature (10 seconds)
-50 to +100
230
°C
°C
Electrical Characteristics, 2.4 kbps On-Off Keyed
Characteristic
Sym
Notes
Minimum
Typical
Maximum
916.7
Units
MHz
kbps
Operating Frequency
f
O
916.3
Data Rate
OOK
19.2
ASK
Transmitter Performance (OOK @ 2.4 kbps)
Peak Input Current, 3 Vdc Supply
Peak Output Power
115.2
I
12
mA
mW
µs
TP
P
0.75
O
Turn On/Turn Off Time
t
/t
12/6
3.5
ON OFF
Power Supply Voltage Range
Operating Ambient Temperature
V
2.7
-20
Vdc
°C
CC
T
+65
A
DR4000 Pin Out
DR4000 Outline Drawing
RF
GND
.70
RFIO
13
.25
.20
14
.165
1
2
3
4
5
12
11
10
9
VCC
NC
CTR0
CTR1
GND
VCC
NC
.10
.70
NC
NC
8
TX IN
6
7
GND
GND
Dimensions in inches
RF Monolithics, Inc.
RFM Europe
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
DR4000-121001
Page 1 of 2
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
916.50 MHz
Transmitter Module
Pin Desciptions
Pin
Name
Description
VCC
1
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 P for a 3 Vdc supply is approximately:
O
TX IN
5
2
P
= 4.8*((V
- 0.9)/(R + 4.7)) , where P is in mW, peak modulation voltage V
is in volts and external modulation
TXH
O
TXH
M
O
resistor R is in kilohms
M
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
8
GND
NC
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.
9
VCC
GND
10
This is the supply voltage return pin.
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.
11
CTR1
CTR0
(T/S)
“T” =1 for transmission, “S” =0 for sleep mode
12
13
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.
RFIO
This pin is the RF ground (return) to be used in conjunction with the RFIO pin. For example, when connecting the module to
14
RF GND
an external antenna, the coaxial cable ground is connected this pin and the coaxial cable center conductor is connected to
RFIO.
Application OOK Circuit
Application ASK Circuit
T /S
3 V d c
3
V d c
T /S
1 2
1 3
11
1 0
9
8
1 2
1 3
1 1
1 0
9
8
5
7
7
6
DR4000
DR4000
1 4
1
6
1 4
1
2
3
4
5
2
3
4
D a ta In
D a t a I n
3 . 3 k
3 .3 k
RF Monolithics, Inc.
RFM Europe
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
DR4000-121001
Page 2 of 2
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
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