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
Value
Units
Incident RF Power
+10
-0.3 to +4.0
±2000
dBm
VDC
Power Supply Voltage (V to Ground) (Observe ESD Precautions)
CC
Terminals 2, 3, or 7 to Ground
ESD (100 pF, 1.5 kW)
V
All Other Terminals to Ground
±300
Case Temperature
-40 to +100
°C
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
2
3
4
5
+3V
10 uF
0.1 to 10 uF
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
E-mail: info@rfm.com
http://www.rfm.com
RX4700-121198
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©1998 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc.
