參數(shù)資料
型號： TA2022AFN
元件分類： 接收器
英文描述： AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO24
封裝： SSOP-24
文件頁數(shù)： 13/18頁
文件大小： 1665K
代理商： TA2022AFN
TA2022AFN
2002-10-30
4
Terminal
Voltage (V)
No.
Name
Function
Internal Circuit
AM
FM
8
AGC
·
AM mode
AGC time constant is
determined by external
capacitor.
·
FM mode
The sudden change of stop
pulse sensitivity is held in by
external capacitor.
―
9
GND
―
0
10
IF OUT
Output of IF count signal
In case of IF request mode, IF
count signal for IF counter is
taken from this terminal.
FM: VIF (FM) = 80mVp-p (typ.)
AM: VIF (AM) = 100mVp-p (typ.)
―
11
IF REQ
IF request switch
VCC: Receive mode
Open: IF request mode
FM stop pulse sensitivity can
be changed by connecting
RSEN in IF request mode.
RSEN should be smaller than
100k
―
12
SP OUT
Output of stop pulse
VCO frequency can be
monitored, in case that this
terminal is connected with
GND through a resistor
(RVCO ≒ 100k).
ON
: VCO monitor
OPEN : SP OUT
―
13
ST IND
Stereo indicator terminal
·
This terminal shared with
output of modulated AM IF
signal.
·
AM IF output: 6mVrms
(RIF = 3k, typ.)
·
RIF should be smaller than
3k. In case that RIF > 3k,
internal biasing circuit doesn't
operate normally in AM mode.
―
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