參數(shù)資料
型號(hào)： TDA9917HW/12/C1
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： ADC
英文描述： 1-CH 8-BIT RESISTANCE LADDER ADC, PARALLEL ACCESS, PQFP48
封裝： 7 X 7 MM, 1.00 MM HEIGHT, PLASTIC, MS-026, SOT545-2, QFP-48
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 120K
代理商： TDA9917HW/12/C1
TA8132ANG/AFG,TA2012NG/FG
2004-10-12
10
8. FM / AM switch and forced monaural switch
FM / AM switch over and stere / forced monaural switch over are done by
internal PNP transistors ON / OFF which are connected to pin(16) and pin
(17) respectively.
The threshold voltages of these PNP transistors are Vth = VCC, and for
switching, we recommend to use mechanical switch.
(Direct short to VCC line.)
In the case of the electrical switch over by transistor, set up VCE
(saturation voltage between collector and emitter) 50mV or less, otherwise
there are some cases that it does not become the AM mode and force
monaural mode.
When these external switches are ON, the currents which flow into pin(16)
and pin(17) are 100A and 20A respectively. (Typical value at VCC = 3V)
Maximum Ratings (Ta = 25°C)
Characteristic
Symbol
Rating
Unit
Supply voltage
VCC
8
V
LED current
ILED
10
mA
LED voltage
VLED
8
V
TA8132ANG
1200
Power dissipation
TA8132AFG
PD (Note)
400
mW
Operating Temperature
Topr
25~75
°C
Storage temperature
Tstg
55~150
°C
(Note): Derated above 25°C in the proportion of 9.6mW / °C for TA8132ANG, TA2012NG and
of 3.2mW / °C for TA8132AFG, TA2012FG.
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