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參數(shù)資料
| 型號： | RX4756 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 301K |
| 代理商： | RX4756 |
RX4756
868.35 MHz
ASH Receiver
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
E-mail: info@rfm.com
http://www.rfm.com
RX4756-121198
Page 1 of 4
1998 by RF Monolithics, Inc. The stylized RFM logo and RFM are registered trademarks of RF Monolithics, Inc
Ideal for 868.35 MHz, 3 V data Receivers in Europe
High-Sensitivity Passive Design with No RF Oscillation
Use with HX4007 for 19.2 kbps Data Rate
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-
tering by a low-loss coupled-resonator SAW filter provides excellent selectivity. Typ-
ical sensitivity better than -80 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 eliminates the need for frequency conversion prior to AM detection. This receiver is designed to operate from 3 V lithium battery
with typically 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 operat-
ing in Europe under the European Telecommunication Standard (ETSI) 300-220-1.
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Operating Radio Frequency
f
C
2,3
868.35 Nominal
MHz
Received Carrier Modulation Type
RF Band
4,5
Pulse Modulation (OOK)
-71
Sensitivity
Operating Signal Strength
Channel Width
6
dBm
-10
f
C
±200
kHz
Input Impedance
Half-Frequency Spurious
f
C
± 1 MHz
Sample Duration
Sample Repetition Rate
Z
IN
50 Nominal
80
W
Interference Rejection
7
dB
15
Sequencing (Sampling)
8
700
625
56
25
0
ns
kHz
kbps
Data Rate
Comparator Threshold
9
Default (Terminal 5 LOW)
10
mV
Override (Terminal 5 LOW)
Digital Output
CMOS Load Capacitance
11
10
p
F
V
Output HIGH Voltage
V
OH
V
OL
t
R
t
F
V
CC
I
CC
T
A
V
CC
-0.2
0.0
V
CC
0.2
Output LOW Voltage
Rise Time
3
ms
Fall Time
3
Power Supply
Operating Voltage
1
2.7
3.0
3.5
VDC
Current at 25C and 3.0 V
4
5
mA
Operating Ambient Temperature
1
-40
+85
°C
Lid Symbolization (in addition to Lot and/or Date Codes)
RFM RX4756
SM-10 Case
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