RX2000
916.5 MHz ASH Receiver
•
Ideal for 916.5 MHz, 3 V Data Receivers in the USA and Canada
Passive Design with No RF Oscillation
Baseband Data Rate of 2.4 kb/s
Simple to Apply with External Parts Count
Rugged, Surface-Mount Package with 130 mm2 Footprint
•
•
•
•
SM-10 Case
This amplifier-sequenced hybrid (ASH) receiver is based on several leading-edge
technologies that allow outstanding performance in a small and simple-to-apply mod-
ule. Two surface-accoustic-wave (SAW) devices are employed. Front-end filtering
by a low-loss coupled-resonator SAW filter provides excellent selectivity. Typical
sensitivity of -83 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 sequence the two RF amplifiers. Time sequencing of the RF gain elimi-
nates the need for frequency conversion prior to AM detection. This receiver is designed to operate from a 3 V lithium battery with typ-
ically 2.5 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 unlicensed wireless remote-controls and digital data links operating in the
USA under FCC Part 15.249 and in Canada under DOC RSS-210.
Electrical Characteristics
Characteristic
Operating Radio Frequency
Received Carrier Modulation Type
Sym
Notes
Minimum
Typical
Maximum
Units
f
2, 3
4, 5
916.50 Nominal
MHz
C
Pulse Modulation (OOK)
-74
RF Band
Sensitivity
dBm
Operating Signal Strength
Channel Width
-10
6
7
f ±200
kHz
C
Z
Input Impedance
50 Nominal
W
IN
Interference Rejection
Sequencing (Sampling)
Half-Frequency Spurious
80
15
dB
f
± 1 MHz
C
Sample Duration
700
625
2.4
25
ns
8
9
Sample Repetition Rate
Data Rate
kHz
kb/s
Baseband
Comparator Threshold
Default (Terminal 5 NC)
Override (Terminal 5 LOW)
10
mV
0
F
Digital Output
CMOS Load Capacitance
Output HIGH Voltage
Output LOW Voltage
Rise Time
10
p
V
V
-0.2
V
CC
OH
CC
V
V
11
0.0
0.2
OL
t
9
R
µs
t
Fall Time
9
F
V
Power Supply
Operating Voltage
Current at 25°C and 3.0 V
2.7
-40
3.0
2.3
3.5
3.0
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 RX2000
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
E-mail: info@rfm.com
http://www.rfm.com
RX2000-121198
Page 1 of 4
©1998 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc.