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參數(shù)資料
| 型號： | TK14489V |
| 廠商： | TOKO INC |
| 元件分類： | 接收器 |
| 英文描述： | FM, AUDIO SINGLE CHIP RECEIVER, PDSO20 |
| 封裝： | TSSOP-20 |
| 文件頁數(shù)： | 17/25頁 |
| 文件大?。?/td> | 2570K |
| 代理商： | TK14489V |
TK14489V
GC3-E011E
Page 24
by a noise amplifier for squelch and a comparator.
For
capacitor
cappling,
waveform-shapable
low
frequency is decided by couppling capacitor value. In this
example, it is able to shape waveform until about 60kHz.
High band is decided by band width of ceramic filter and
RC type LPF on pin 11.
The threshold voltage of including comparator is
equivalent to V
BE of transistor, so it gets needful bias
voltage(about 0.8V) series-connecting a diode and a
resistor, and realize temperature compensation. This bias
voltage is changed due to supply voltage, please set up it
according to supply voltage which you use.
12-9. Attentions to Layout Design
As this product is considered for stable operation, the
mixer block and the other block that includes IF stage,
OP amp and squelch are independent from each other.
However in order to realize stable operation, please pay
attention to the following, because of high frequency
operation.
(1) Bypass Capacitor
A bypass capacitor must be connected with minimum
distance between the V
CC pin and the GND pin.
(2)V
CC/GND Pattern
In order to make low impedance V
CC/GND lines, please
keep the pattern as wide as possible.
(3) Pattern near Demodulator
Pattern layout around the phase shifter for demodulator:
please keep as short as possible.
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相關代理商/技術(shù)參數(shù) |
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| TK14551V | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:FM IF DETECTOR/AMPLIFIER |
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| TK14551VTL | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:FM IF DETECTOR/AMPLIFIER |
| TK14552V | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Wide band AM / ASK IF IC for ETC |
| TK14583V-G | 制造商:TOKO 制造商全稱:TOKO, Inc 功能描述:Wide band FM IF IC for remote keyless entry / tire pressure monitoring system |
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