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| 型號(hào)： | RX2256 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 352K |
| 代理商： | RX2256 |
RX2256
926.0 MHz ASH Receiver
Phone: (972) 233-2903
Fax: (972) 387-9148
E-mail: info@rfm.com
http://www.rfm.com
RX2256-121198
Page 1 of 4
1998 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
Ideal for 926.0 MHz, 3 V Data Receivers in the USA and Canada
High-Sensitivity Passive Design with No RF Oscillation
Baseband Data Rate of 20kbps
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.
Typical sensitivity better than -80 dBm is achieved with no RF oscillating or regenerative circuits. This results in virtually no RF spuri-
ous 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 a 3 V lithium
battery with typically 4.5 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
Sym
f
C
Notes
Minimum
Typical
Maximum
Units
Operating Radio Frequency
Received Carrier Modulation Type
RF Band
2, 3
4, 5
926.0 Nominal
Pulse Modulation (OOK)
-71
MHz
Sensitivity
Operating Signal Strength
Channel Width
Input Impedance
Half-Frequency Spurious
f
C
± 1 MHz
Sample Duration
Sample Repetition Rate
3 dB Bandwidth
Default (Terminal 5 NC)
Override (Terminal 5 LOW)
CMOS Load Capacitance
6
dBm
-10
f
C
±200
kHz
W
Z
IN
50 Nominal
80
15
700
625
56
25
0
Interference Rejection
7
dB
Sequencing (Sampling)
8
ns
kHz
kHz
Baseband
Comparator Threshold
10
mV
Digital Output
11
10
V
CC
0.2
p
F
Output HIGH Voltage
Output LOW Voltage
Rise Time
Fall Time
Operating Voltage
Current at 25°C and 3.0 V
V
OH
V
OL
t
R
t
F
V
CC
I
CC
T
A
V
CC
-0.2
0.0
V
3
3
ms
Power Supply
1
2.7
3.0
4.5
3.5
6
+70
VDC
mA
°C
Operating Ambient Temperature
1
-20
Lid Symbolization (in addition to Lot and/or Date Codes)
RFM RX2256
SM-10 Case
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