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参数资料
型号： SAA7706H
厂商： NXP Semiconductors N.V.
元件分类： 数字信号处理
英文描述： Car radio Digital Signal Processor (DSP)
封装： SAA7706H/N109S<SOT318-2 (QFP80)|<<http://www.nxp.com/packages/SOT318-2.html<1<Always Pb-free,;SAA7706H/N109S<SOT318-2 (QFP80)|<<http://www.nxp.com/packages/SOT318-2.html&
文件页数： 14/52页
文件大小： 271K
代理商： SAA7706H
2001 Mar 05
14
Philips Semiconductors
Product specification
Car radio Digital Signal Processor (DSP)
SAA7706H
handbook, full pagewidth
MGT461
ADC
0 dB (full-scale)
660 mV (RMS)
GAIN
Audio
AUDIO
DIGITAL
FILTER
5 dB GAIN
DSP2
STEREO
DECODER
3 dB GAIN
DSP1
2 dB (full-scale)
Fig.5 Audio gain through ADC and digital filter path to DSP.
8.1.2
R
EALIZATION OF THE AUXILIARY INPUT WITH VOLUME
CONTROL
A differential input with volume control for mixing to the
front left or front right of both DAC outputs is provided. The
inputs consist of a PHONE and NAV input. Both are
accompanied with their ground return lines. After selection
of PHONE or NAV the volume can be changed from about
+18 to
22.5 dB in 27 steps and mute (MIX output). This
signal can be added to the left and/or right front DAC
channels.
The output signals of both input circuits can also be
switchedtoADC1and/orADC2,dependingonthesettings
of audio input control 1 (AIC1) and audio input control 2
(AIC2), without volume control (see Fig.3).
8.1.3
R
EALIZATION OF THE
FM
INPUT CONTROL
The gain of the circuit has a maximum of 2.26 (7.08 dB).
This results in an input level of 368 mV for full-scale, which
means 0 dB (full-scale) at the DSP1 input via the stereo
decoder (see Fig.6). The gain can be reduced in steps of
1.5 dB. When the gain is set to
3.4 dB the input level
becomes 1229 mV for full-scale. This setting accounts for
the 200 mV (RMS) input sensitivity at 22.5 kHz sweep and
a saturation of the input at 138 kHz sweep.
RDS update: for RDS update the fast access pin SEL_FR
must be made HIGH. In that case the FM_RDS signal also
goes through the path that was set for FM_MPX. In this
situation the signal must be obtained via the FM_RDS
input and a noise sample can be retrieved. The input
FM_MPX gets high-ohmic. Charging of the coupling
capacitor connected to pin FM_MPX is no longer possible.
handbook, full pagewidth
MGT462
ADC
0 dB (full-scale)
831 mV (RMS)
GAIN
FM
AUDIO
DIGITAL
FILTER
5 dB GAIN
DSP2
STEREO
DECODER
3 dB GAIN
DSP1
Fig.6 FM gain path through stereo decoder to DSP1.
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SAA7706H/N107 功能描述:数字信号处理器和控制器 - DSP, DSC DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
SAA7706H/N107,518 功能描述:数字信号处理器和控制器 - DSP, DSC DIRAC-1 RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
SAA7706H/N107,557 功能描述:数字信号处理器和控制器 - DSP, DSC DIGITAL SIGNAL RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
SAA7706H/N107S,518 功能描述:数字信号处理器和控制器 - DSP, DSC CAR RADIO DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
SAA7706H/N107S,557 功能描述:数字信号处理器和控制器 - DSP, DSC INTEGRATED RDS/TMC RECEIVER RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT
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