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參數(shù)資料
| 型號： | LM3916 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dot/Bar Display Driver |
| 中文描述： | 點/酒吧顯示驅動程序 |
| 文件頁數(shù)： | 4/27頁 |
| 文件大小： | 509K |
| 代理商： | LM3916 |
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Electrical Characteristics
(Notes 2, 4) (Continued)
Parameter
SUPPLY CURRENT
Standby Supply Current
(All Outputs Off)
Conditions
(Note 2)
Min
Typ
Max
Units
V
+
= + 5V, I
L(REF)
= 0.2 mA
V
+
= + 20V, I
L(REF)
= 1.0 mA
2.4
6.1
4.2
9.2
mA
mA
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC andAC electrical specifications under particular test conditions which guar-
antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
Note 2:
Unless otherwise stated, all specifications apply with the following conditions:
3 V
DC
≤
V
+
≤
20 V
DC
0.015V
≤
V
RLO
≤
12 V
DC
T
A
= 25C, I
L(REF)
= 0.2 mA, pin 9 connected to pin 3 (bar mode).
3 V
DC
≤
V
LED
≤
V
+
For higher power dissipations, pulse testing is used.
0.015V
≤
V
RHI
≤
12 V
DC
Note 3:
Accuracy is measured referred to +3 dB = +10.000 V
at pin 5, with +10.000 V
DC
at pin 6, and 0.000 V
DC
at pin 4. At lower full-scale voltages, buffer and
comparator offset voltage may add significant error. See table for threshold voltages.
Note 4:
Pin 5 input current must be limited to
±
3 mA. The addition of a 39k resistor in series with pin 5 allows
±
100V signals without damage.
Note 5:
Bar mode results when pin 9 is within 20 mV of V
+
. Dot mode results when pin 9 is pulled at least 200 mV below V
+
. LED
#
10 (pin 10 output current) is dis-
abled if pin 9 is pulled 0.9V or more below V
LED
.
Note 6:
The maximum junction temperature of the LM3916 is 100C. Devices must be derated for operation at elevated temperatures. Junction to ambient thermal
resistance is 55C/W for the molded DIP (N package).
V
REF
, V
RHI
, V
RLO
≤
(V
+
1.5V)
0V
≤
V
IN
≤
V
+
1.5V
LM3916 Threshold Voltage
(Note 3)
dB
Volts
Typ
10.000
8.913
7.943
7.079
6.310
dB
Volts
Typ
5.012
3.981
3.162
2.239
0.708
Min
9.985
8.660
7.718
6.879
5.957
Max
10.015
9.173
8.175
7.286
6.683
Min
4.732
3.548
2.818
1.995
0.631
Max
5.309
4.467
3.548
2.512
0.794
3
3
±
1
2
5
±
1
2
7
±
1
10
±
1
20
±
1
2
±
1
4
1
±
1
4
0
±
1
4
1
±
1
2
Typical Performance Characteristics
Supply Current vs
Temperature
DS007971-35
Operating Input Bias
Current vs Temperature
DS007971-36
Reference Voltage vs
Temperature
DS007971-37
L
www.national.com
4
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