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參數(shù)資料
| 型號： | DE6003-001 |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 315K |
| 代理商： | DE6003-001 |
DE6003
5
running at lower temperatures. The thermal time constant of
the radio is 1 minute and this derating curve can only be applied
to transmitter for continuous transmit times of less than
20 seconds; above this time the duty cycle should be
considered 100%. For continuous operation the case
temperature should not exceed 40°C.
Environmental Limiting Conditions of Use
G
Operational Temperature: 0°C to
1
55°C.
G
Storage Temperature
2
20°C to
1
70°C.
G
Humidity: 95% non-condensing.
G
ESD: Human body model, 4000V.
G
Vibration Testing: 10 t0 2000Hz, displacement
6
1mm,
acceleration 2G.
Operating temperature
When in operation the transmitter power amplifier (PA)
dissipates the highest amount of power and creates the highest
temperature. In order to keep the temperatures to a safe level
the environment in which the radio is operated must be kept
within the values specified in Environmental Limiting Conditions
of Use, above.
The radio dissipates this heat from the whole of its surface,
in particular from the metallic screen; steps must be taken to
prevent overheating as early failure of the radio may occur.
Depending on the air temperature surrounding the radio, the
PA duty cycle must be set to keep the dissipation to a safe value.
The transmitter power amplifier derating curve of Fig.2 shows
the derating factors that should be applied in order not to
exceed the maximum working temperature. Running at the
maximum permitted temperature on the PA will (as with all
semiconductor devices) result in shorter operational life than
A
°
C
60
55
50
40
30
20
10
0
SAFE WORKING AREA
0 20 40 60 80 93 100
PA DUTY FACTOR (%)
Fig. 2 PA duty cycle
State
Standby
Receive, ANT 1, low power, PA off,
setting Channel 0
Receive, ANT 2, low power, PA off,
setting Channel 8
Receive, ANT 1, high power, PA off,
setting Channel 16
Receive, ANT 2, high power, PA off
TX ready, ANT 1, low power, PA off
Transmit, ANT 1, low power, PA on
Transmit, ANT 1, high power, PA on
SD (6:0)
X
0000000
0001000
0010000
X
X
X
X
ANTSEL
X
L
H
L
H
L
L
L
PWRLO
X
L
L
H
H
L
L
H
PAOFF
X
L
L
L
L
L
H
H
RX/TX
X
H
H
H
H
L
L
L
STDBY
L
H
H
H
H
H
H
H
LOADB
X
H
H
H
H
Table 6 Control signals truth table
TIMING SPECIFICATIONS AND CONDITIONS OF USE
The timing diagrams, Figs. 3 to 8, show some of the normal sequences used in the control of the DE6003 and are used to illustrate
timing relationships. Table 6 is the truth table for these signals values for which are given in Table 7. Each entry in Table 7 is described
on pages 9 and 10.
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