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RX1010
433.92 MHz
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ASH Receiver
Ideal for 433.92 MHz, 3 V Receivers in Europe (I-ETS 300 220)
High-Sensitivity Passive Design with No RF Oscillation
Baseband Data Rate of 10 kbps
Simple to Apply with External Parts Count
Rugged, Surface-Mount Package with 130 mm
2
Footprint
This amplifier-sequenced hybrid (ASH) receiver is based on several leading-edge
technologies that allow outstanding performance in a small and simple-to-apply
module. Two surface-accoustic-wave (SAW) devices are employed. Front-end fil-
SM-10 Case
tering by a low-loss coupled-resonator SAW filter provides excellent selectivity.
Typical sensitivity better than -94 dBm is achieved with no RF oscillating or regener-
ative circuits. This results in virtually no RF spurious emissions. A low-loss SAW delay line provides the time delay necessary to
sequence 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 3 V lithium battery with typically 1.3 mA current. For system design flexibility, the baseband
output is accessible, and the comparator threshold can be changed externally between two settings. Typical applications include unli-
censed wireless remote-controls, security and data-link devices operating in Europe under ETSI I-ETS 300 220.
Electrical Characteristics
Characteristic
Operating Radio Frequency
Received Carrier Modulation Type
RF Band
Sensitivity
Operating Signal Strength
Channel Width
Input Impedance
Interference Rejection
Sequencing (Sampling)
Baseband
Comparator Threshold
Half-Frequency Spurious
f
C ± 1 MHz
Sample Duration
Sample Repetition Rate
Data Rate
3 dB Bandwidth
Default (Terminal 5 NC)
Override (Terminal 5
LOW)
CMOS Load Capacitance
Output HIGH Voltage
Output LOW Voltage
Rise Time
Fall Time
Power Supply
Operating Voltage
Current at 25C and 3.0 V
Operating Ambient Temperature
Lid Symbolization (in addition to Lot and/or Date Codes)
Sym
f
C
Notes
2, 3
4, 5
Minimum
Typical
433.92 Nominal
Maximum
Units
MHz
6
Z
IN
7
8
9
Pulse Modulation (OOK)
-94
-10
f
C
±200
50 Nominal
105
20
700
250
10
12
25
0
10
dBm
kHz
W
dB
ns
kHz
kb/s
kHz
mV
p
F
V
µs
10
Digital Output
V
OH
V
OL
t
R
t
F
V
CC
I
CC
T
A
1
1
11
V
CC
-0.2
0.0
5
5
2.7
-40
RFM RX1010
3.0
1.3
V
CC
0.2
3.5
1.4
+85
VDC
mA
×C
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
©1998 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
RX1010-121198
Page 1 of 4
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 f
C
.
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
Incident RF Power
Power Supply Voltage (V
CC
to Ground) (Observe ESD Precautions)
ESD (100 pF, 1.5 kW)
Case Temperature
1
Terminals 2, 3, or 7 to Ground
All Other Terminals to Ground
Value
+10
-0.3 to +4.0
±2000
±300
-40 to +100
Units
dBm
VDC
V
°C
Block Diagram and Electrical Connections
50 ohm Antenna
Note 12
10
RF Input
9
Gnd
8
Gnd
7
Data Output
6
Voltage
Reference
1 uF
Pulse
Gen-
erator
Top View
RF
Amp.
SAW BPF
SAW
Delay
Line
RF
Amp.
AM
Detector
LPF
Comparator
Vcc
1
Baseband
Output
2
Comparator
Input
3
Gnd
4
Threshold
Override
5
+3V
10 uF
0.1 to 10 uF
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
©1998 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
RX1010-121198
Page 2 of 4
The RX Series SMT Hybrid ASH Receivers
Demonstration Circuit
1
Top View
1 Vcc
+
16
15
RF In 10
Note 12
+3V
Lithium
CR2032
2
10 uF
2 BB Out
+
Gnd 9
.1 to 1uF
3 Comp In
Gnd 8
4
5
+
MC145028 Decoder
3
14
13
12
11
10
0.1 uF
1 mA @ 3VDC
RS 273-065A or equiv
4 Gnd
Data Out 7
5 Thres
Override
Vref 6
1 uF
33 K
6
7
0.1 uF
+
Piezo
Alarm
+
OPEN: Default 25mV
CLOSED: Override OV
+
620 K
8
9
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
0
10
20
30
40
50
60
70
80
90
100
110
Spurious Rejection Relative to Passband Sensitivity (dB)
10
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
216.96
Half Freq. Spurious
Response
433.92
Operating Freq.
Frequency (MHz)
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
©1998 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
RX1010-121198
Page 3 of 4
The RX Series SMT Hybrid ASH Receivers
Case Design
0.370
(9.40)
0.10
(2.54)
0.241
(6.12)
0.065
(1.65)
10 Places
0.540
(13.72)
RFM
Rxxxxx
0.070
(1.78)
4 Places
0.050
(1.27)
10 Places
0.100
(2.54)
4 Places
Typical Antennas
A
B
50
Ω
C
D
Ground Plane
Enameled Wire, AWG = G
Inner Dia = E
No. Turns = F
Frequency
Dimensions
A
B
C
D
E
F
G
Units
303.825
Inches
Millimeters
Inches
Millimeters
Inches
Millimeters
Inches
Millimeters
Inches
Millimeters
Number of
Turns
AWG
5.35
135.89
1.0
25.4
0.25
6.35
3.7
93.98
0.375
9.53
4T
#20
418.0
3.9
99.06
0.6
15.24
0.6
15.24
2.7
68.58
0.1
2.54
16T
#22
433.92
3.55
90.17
0.6
15.24
0.55
13.97
2.4
60.96
0.1
2.54
15T
#22
916.5
1.58
40.13
0.4
10.16
0.18
4.57
1.0
25.4
0.1
2.54
7T
#24
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
©1998 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc.
E-mail: info@rfm.com
http://www.rfm.com
RX1010-121198
Page 4 of 4

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