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參數(shù)資料
| 型號： | LP3939ILQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Power Amplifier Driver For Dual Band CDMA Handsets |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC16 |
| 封裝： | PLASTIC, LLP-16 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 116K |
| 代理商： | LP3939ILQ |
AC Electrical Characteristics
Unless otherwise noted, V
= V
= 3V, C
= 50 pF. Typical values and limits appearing in normal type apply for T
J
=
25C. Limits appearing in
boldface type
apply over the entire junction temperature range for operation, 40C to +85C.
(Note 7)
Symbol
Parameter
Conditions
Typ
Limit
Units
Min
Max
t
PLH
Propagations Delay
Low to High
EN_CELL to PA_ON or
EN_PCS to PA_ON
EN_CELL to CELL_ON or
EN_PCS to PCS_ON
R
PD
= 100
GAIN_MODE to CELL_GAIN
or GAIN_MODE to PCS_GAIN
R
PD
= 100
INV_A1 to INV_Y1
INV_A2 to INV_Y2
EN_CELL to PA_ON or
EN_PCS to PA_ON
EN_CELL to CELL_ON or
EN_PCS to PCS_ON
R
PD
= 100
GAIN_MODE to CELL_GAIN
or GAIN_MODE to PCS_GAIN
R
PD
= 100
INV_A1 to INV_Y1
INV_A1 to A1_SINK
R
PU
= 10 k
INV_A2 to INV_Y2
PA_ON
INV_Y2
INV_Y1
PA_ON
INV_Y2
INV_Y1
10
80
ns
7
56
ns
7
56
ns
10
25
80
200
ns
ns
t
PHL
Propagations Delay
High to Low
10
80
ns
25
200
ns
20
160
ns
10
80
ns
5
40
ns
5
15
50
20
15
10
20
40
120
400
160
120
80
160
ns
t
RISE
Rise Time
ns
T
FALL
Fall Time
ns
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical
Characteristics tables.
Note 2:
All voltages are with respect to the potential at the GND pin.
Note 3:
The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using the formula:
where T
J
is the junction temperature, T
A
is the ambient temperature, and
θ
JA
is the junction-to-ambient temperature. The 2.0W rating appearing under Absolute
Maximum Ratings results from substituting the Absolute Maximum junction temperature, 150C for T
J
, 70C for T
A
and 39.8C/W for
θ
JA
. More power can be
dissipated safely at ambient temperatures below 70C. Less power can be dissipated safely at ambient temperatures above 70C. The Absolute Maximum power
dissipation can be increased by 25 mW for each degree below 70C, and it must be derated by 25 mW for each degree above 70C.
Note 4:
The human body model is 100 pF discharged through a 1.5 k
resistor into each pin. The machine model is a 200 pF capacitor discharged directly into
each pin.
Note 5:
Like the Absolute Maximum power dissipation, the maximum power dissipation depends on the ambient temperature. The 1.38W rating appearing under
Absolute Maximum Ratings results from substituting the Maximum junction temperature, 125C for T
J
, 70C for T
A
and 39.8C/W for
θ
JA
. More power can be
dissipated safely at ambient temperatures below 70C. Less power can be dissipated safely at ambient temperatures above 70C. The Absolute Maximum power
dissipation can be increased by 25 mW for each degree below 70C, and it must be derated by 25 mW for each degree above 70C.
Note 6:
All limits are guaranteed by testing or statistical analysis.
Note 7:
All AC parameters are guaranteed by design, not production tested.
L
www.national.com
4
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