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參數(shù)資料
| 型號： | LMX2240M |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Intermediate Frequency Receiver |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, SOP-16 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 208K |
| 代理商： | LMX2240M |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Power Supply Voltage (V
CC
)
Storage Temperature Range (T
S
)
Lead Temperature (T
L
)
(Soldering, 10 seconds)
6.5V
b
65
§
C to
a
150
§
C
a
260
§
C
Recommended Operating
Conditions
Min
Max
Units
Supply Voltage (V
CC
)
3V
Operating Temperature (T
A
)
2.85
b
10
3.15
a
70
V
§
C
Electrical Characteristics
The following specifications apply for supply voltage V
CC
e a
3V
g
5%, f
IN
e
120 MHz, and T
A
e
25
§
C unless otherwise
specified
Symbol
Parameter
Conditions
Min
Value
Typ
Max
Units
I
DD
Supply Current
8
10
mA
I
PD
Power Down Current
115
200
m
A
f
max
Maximum IF Input Frequency
120
150
MHz
f
min
Minimum IF Input Frequency
10
MHz
IF LIMITER
NF
IF Limiter Noise Figure
11.5
12.5
dB
A
V
Limiter Gain
Z
L
e
1000
X
70
dB
sens
Limiter/Disc. Sensitivity
BER
e
0.001
b
75
dBm
IF
in
IF Limiter Input Impedance
150
225
X
IF
out
IF Limiter Output Impedance
250
X
V
max
Maximum Input Voltage Level
500
mV
PP
V
out
Output Swing
350
500
V
PP
Lim
Input Limiting Point
b
70
dBm
DISCRIMINATOR
V
out
Discriminator Output Peak-to-Peak Voltage
(Note 1)
See Test Circuit
1.0
1.2
V
PP
V
OS
Disc. Output DC Voltage (Pin 7)
1.4
1.7
V
MID
Mid-Range Output (Pin 6)
1.4
1.7
V
DISC
in
Disc. Input Impedance
1000
X
DISC
out
Disc. Output Impedance
150
X
RSSI
RSSI
RSSI Dynamic Range
70
dB
RSSI
out
RSSI Output Voltage
Pin
e b
80 dBm
0.35
0.5
0.8
V
Pin
e
0 dBm
1.15
1.5
1.8
V
RSSI Slope
Pin
e b
70 dBm to
b
20 dBm
11
16
mV/dB
RSSI Linearity
3
dB
Note 1:
The discriminator output peak-to-peak voltage is measured by operating the discriminator mixer with two separate inputs (i.e., as a mixer). A beat frequency
of 1 kHz is generated, and this tone’s output swing is guaranteed to be at least 1.0 V
PP
. When the mixer is configured as a discriminator with the limiter and a tank
circuit, the guaranteed 1.0 V
PP
output translates to (1.0V
*
(36/180)
e
) 200 mV
PP
demodulated output, assuming at least 36
§
phase shift across the band of
interest from the tank circuit.
3
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