參數(shù)資料
型號(hào): TDA9605
廠商: NXP Semiconductors N.V.
英文描述: Audio processor with head amplifier for VHS hi-fi
中文描述: 音頻處理器負(fù)責(zé)人錄影帶您好放大器音響
文件頁(yè)數(shù): 16/52頁(yè)
文件大小: 244K
代理商: TDA9605
1999 Apr 14
16
Philips Semiconductors
Product specification
Audio processor with head amplifier for VHS hi-fi
TDA9605H
Fig.11 HF envelope output (playback carrier level).
1.3 MHz (NTSC) or 1.4 MHz (PAL) at internal node between head
amplifier and HF AGC.
handbook, halfpage
ENVOUT
output
voltage
(V)
0
10
1
1
2
3
4
MGR846
1
10
10
2
10
3
left channel carrier amplitude (RMS value) (mV)
Fig.12 AF envelope output (audio peak level).
Bit LOH = 0.
handbook, halfpage
ENVOUT
output
voltage
(V)
0
40
1
MGR847
2
3
4
10
30
20
10
0
LINEL and LINER output level (dBV)
Fig.13 AGC output of RF converter.
handbook, halfpage
converter
MGR848
output
(dBV)
3
3
line output (dBV)
6.8
RF converter output
An AGC function is incorporated to avoid overmodulation
in the RF converter connected to pin RFCOUT. The AGC
limits the maximum signal level on the RF converter output
to
3 dBV (see Fig.13).
The RF converter output can be muted by setting
bit RFCM = 1. When using this RF converter mute, the
AGC control is reset by discharging the capacitor
connected to pin RFACG.
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