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RX1120

型号：

RX1120

描述：

模拟IC\n[ Analog IC ]

品牌：

ETC[ ETC ]

页数：

4 页

PDF大小：

356 K

下载PDF手册
RX1120  
•
•
•
•
Ideal for 303.825 MHz, 3 V Data Receivers in the UK and the USA  
High-Sensitivity Passive Design with No RF Oscillation  
Baseband Data Rate of 10 kb/s  
Simple to Apply with External Parts Count  
Rugged, Surface-Mount Package with 130 mm2 Footprint  
303.825 MHz  
ASH  
•
Receiver  
This amplifier-sequenced hybrid (ASH) receiver is based on several leading-edge technologies that allow out-  
standing performance in a small and simple-to-apply module. Two surface-accoustic-wave (SAW) devices  
are employed. Front-end filtering by a low-loss coupled-resonator SAW filter provides excellent selectivity.  
Typical sensitivity better than -92 dBm is achieved with no RF oscillating or regenerative circuits. This results  
in virtually no RF spurious emissions. A low-loss SAW delay line provides the time delay necessary to se-  
quence the two RF amplifiers. Time sequencing of the RF gain eliminates the need for frequency conversion  
prior to AM detection. This receiver is designed to operate from a 3 V lithium battery with typically 1.3 mA cur-  
rent. For system design flexibility, the baseband output is accessible, and the comparator threshold can be  
changed externally between two settings. Typical applications include unlicensed wireless remote-controls,  
security and data-link devices operating in the USA under FCC Part 15, in Australia, in Japan, and in Korea.  
SM-10 Case  
Electrical Characteristics  
Characteristic  
Operating Radio Frequency  
Received Carrier Modulation Type  
Sym  
Notes  
Minimum  
Typical  
Maximum  
Units  
f
2, 3  
303.825 Nominal  
MHz  
C
4, 5  
Pulse Modulation (OOK)  
-92  
RF Band  
Sensitivity  
dBm  
Operating Signal Strength  
Channel Width  
-10  
6
f ±200  
kHz  
W
C
Z
Input Impedance  
50 Nominal  
IN  
Interference Rejection  
Sequencing (Sampling)  
Baseband  
half-Frequency Spurious  
105  
20  
7
8
dB  
f
±1 MHz  
C
Sample Duration  
700  
250  
20  
ns  
Sample Repetition Rate  
Data Rate  
kHz  
kbps  
kHz  
9
3 dB Bandwidth  
24  
Comparator Threshold  
Digital Output  
Default (Terminal 5 NC)  
Override (Terminal 5 LOW)  
CMOS Load Capacitance  
Output HIGH Voltage  
Output LOW Voltage  
Rise Time  
25  
10  
mV  
0
F
10  
p
V
V
-0.2  
V
CC  
OH  
CC  
V
V
11  
0.0  
0.2  
OL  
t
3
R
µs  
t
Fall Time  
3
F
V
Power Supply  
Operating Voltage  
Current at 25C and 3.0 V  
2.7  
-40  
3.0  
1.3  
3.5  
1.4  
VDC  
mA  
°C  
CC  
1
1
I
CC  
T
Operating Ambient Temperature  
+85  
A
Lid Symbolization (in addition to Lot and/or Date Codes)  
RFM RX1120  
RF Monolithics, Inc.  
RFM Europe  
Phone: (972) 233-2903  
Phone: 44 1963 251383  
Fax: (972) 387-9148  
Fax: 44 1963 251510  
E-mail: info@rfm.com  
http://www.rfm.com  
RX1120-111199  
Page 1 of 4  
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.  
The RX Series SMT Hybrid ASH Receivers  
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.  
Notes:  
1. Unless noted otherwise, specifications apply over the entire specified operating temperature and voltage ranges.  
2. One or more of the following United States patents apply: 4,454,488; 4,616,197; 4,749,964; 4,902,925. Other patents are pending.  
3. Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the  
equipment manufacturer.  
4. The design, manufacturing process, and specifications of this device are subject to change without notice.  
5. A variety of on-off-keyed (OOK) pulse modulation schemes are possible since digital decoding is an external function (not included  
in the ASH receiver).  
6. These parameters apply over the absolute minimum operating passband which is referenced to fC.  
7. With interfering signal matched to the receiver modulation and code. See “Typical Modulated Interference Rejection” for a more  
detailed view.  
8. Sample repetition rates greater than 1 MHz are available in custom versions. Contact RFM for details.  
9. Baseband data rates are available to 20 kbps, respectively, in custom versions. Contact RFM for details. See HX/RX Designer’s  
Guide for details on data rate limits.  
10. The default comparator threshold (with terminal 5 not connected) is optimized for low duty-cycle, or “bursty” data and eliminates  
noise output when there is no RF signal. The override threshold (with terminal 5 connected to ground) is optimized for continuous  
data.  
11. The ASH receiver is designed to drive a single CMOS load.  
12. For ESD protection.  
Absolute Maximum Ratings  
Rating  
Value  
Units  
Incident RF Power  
Power Supply Voltage (VCC to Ground) (Observe ESD Precautions)  
+10  
dBm  
VDC  
-0.3 to +4.0  
ESD (100 pF, 1.5 kW)  
Terminals 2, 3, or 7 to Ground  
All Other Terminals to Ground  
±2000  
±300  
V
-40 to +100  
°C  
Case Temperature  
Block Diagram and Electrical Connections  
50 ohm Antenna  
Note 12  
10  
9
8
7
6
1 uF  
Voltage  
Reference  
RF Input  
Gnd  
Gnd  
Data Output  
Pulse  
Gen-  
erator  
SAW  
Delay  
Line  
RF  
Amp.  
RF  
Amp.  
AM  
Detector  
LPF  
SAW BPF  
Comparator  
Baseband  
Output  
Comparator  
Input  
Threshold  
Override  
Vcc  
1
Gnd  
4
2
3
5
+3V  
10 uF  
0.1 to 10 uF  
RF Monolithics, Inc.  
RFM Europe  
Phone: (972) 233-2903  
Phone: 44 1963 251383  
Fax: (972) 387-9148  
Fax: 44 1963 251510  
E-mail: info@rfm.com  
http://www.rfm.com  
RX1120-111199  
Page 2 of 4  
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.  
The RX Series SMT Hybrid ASH Receivers  
Demonstration Circuit  
1
16  
Top View  
+3V  
Lithium  
CR2032  
Note 12  
2
3
15  
14  
1 Vcc  
RF In 10  
+
10 uF  
2 BB Out  
3 Comp In  
Gnd 9  
Gnd 8  
+
.1 to 1uF  
4
5
6
7
13  
12  
11  
10  
1 mA @ 3VDC  
RS 273-065A or equiv  
4 Gnd  
Data Out 7  
+
Piezo  
Alarm  
5 Thres  
Override  
Vref 6  
+
1 uF  
33 K  
OPEN: Default 25mV  
CLOSED: Override OV  
+
+
0.1 uF  
0.1 uF  
620 K  
9
8
Typical Modulated Interference Rejection (433.92 MHz RX1000 Shown)  
This plot is for an interfacing signal modulated with the receiver’s modulation and code. Continuous wave (CW) or signals with other  
modulation or codes typically result in significantly better rejection performance.  
0
10  
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
110  
20  
30  
40  
50  
60  
70  
80  
90  
100  
110  
120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 520 540 560 580 600 620 640  
Frequency (MHz)  
216.96  
Half Freq. Spurious  
Response  
433.92  
Operating Freq.  
RF Monolithics, Inc.  
RFM Europe  
Phone: (972) 233-2903  
Phone: 44 1963 251383  
Fax: (972) 387-9148  
Fax: 44 1963 251510  
E-mail: info@rfm.com  
http://www.rfm.com  
RX1120-111199  
Page 3 of 4  
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.  
The RX Series SMT Hybrid ASH Receivers  
Case Design  
0.065  
0.241  
(6.12)  
0.370  
(9.40)  
0.10  
(2.54)  
(1.65)  
10 Places  
0.050  
(1.27)  
10 Places  
0.070  
(1.78)  
4 Places  
0.540  
(13.72)  
0.100  
(2.54)  
4 Places  
Typical Antennas  
A
B
C
D
50  
W
Enameled Wire, AWG = G  
Inner Dia = E  
No. Turns = F  
Frequency  
Dimensions  
Units  
303.825  
418.0  
3.9  
433.92  
916.5  
Inches  
Millimeters  
Inches  
5.35  
135.89  
1.0  
3.55  
90.17  
0.6  
1.58  
40.13  
0.4  
A
B
C
D
E
99.06  
0.6  
Millimeters  
Inches  
25.4  
0.25  
6.35  
3.7  
15.24  
0.6  
15.24  
0.55  
13.97  
2.4  
10.16  
0.18  
4.57  
1.0  
Millimeters  
Inches  
15.24  
2.7  
Millimeters  
Inches  
93.98  
0.375  
9.53  
68.58  
0.1  
60.96  
0.1  
25.4  
0.1  
Millimeters  
2.54  
2.54  
2.54  
Number of  
Turns  
F
4T  
16T  
#22  
15T  
#22  
7T  
G
AWG  
#20  
#24  
RF Monolithics, Inc.  
RFM Europe  
Phone: (972) 233-2903  
Phone: 44 1963 251383  
Fax: (972) 387-9148  
Fax: 44 1963 251510  
E-mail: info@rfm.com  
http://www.rfm.com  
RX1120-111199  
Page 4 of 4  
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.  
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