参数资料
型号: MAX9595CTM+T
厂商: Maxim Integrated Products
文件页数: 6/28页
文件大小: 0K
描述: IC AUDIO/VIDEO SWIT DUAL 48TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 音频/视频切换
电路: 2 x SCART
电压电源: 单/双电源
电压 - 电源,单路/双路(±): 4.75 V ~ 5.25 V,±11.4 V ~ 12.6 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 48-WFQFN 裸露焊盘
供应商设备封装: 48-TQFN-EP(7x7)
包装: 带卷 (TR)
MAX9595
Audio Outputs
Both right and left channels have a stereo output for the
TV and VCR SCART. The monaural output, which is a
mix of the TV right and left channels, drives the RF
modulator, RF_MONO_OUT. The monaural mixer, a
resistor summer, attenuates the amplitude of each of
the two signals by 6dB. A 12.54dB gain block follows
the monaural mixer. If the left and right audio channels
were completely uncorrelated, then a 9.54dB gain
block is used. See Figure 4 for the functional diagram
of the audio section.
Clickless Switching
The TV channel incorporates a zero-crossing detect
(ZCD) circuit that minimizes click noise due to abrupt
signal level changes that occur when switching
between audio signals at an arbitrary moment.
Audio/Video Switch for Dual SCART Connector
14
______________________________________________________________________________________
AUDIO INPUTS
AUDIO OUTPUTS
ENC_INL
TV_INL
VCR_INL
MUTE
Σ/2
MUTE
MUTE IS AN INTERNAL SIGNAL
-6dB, 0dB, OR +6dB
9.54dB
12.54dB
GNDAUD
9.54dB
ZCD
TV_OUTL
RF_MONO_OUT
TV_OUTR
VOLUME CONTROL BYPASS
VOLUME CONTROL
+6dB TO -56dB
VOLUME CONTROL
+6dB TO -56dB
I2C
VCR_OUTL
VCR_OUTR
9.54dB
ENC_INR
TV_INR
VCR_INR
VOLUME CONTROL BYPASS
Figure 4. MAX9595 Audio Section Functional Diagram
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