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TDA6170 データシート(PDF) 10 Page - Infineon Technologies AG |
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TDA6170 データシート(HTML) 10 Page - Infineon Technologies AG |
10 / 27 page Data Sheet TDA6170X Semiconductor Group 6 21.7.99 7.3.1 Logic Allocation 7.3.2 IF-Muting 7.4 Converter Mixer In the converter mixer the sound subcarriers (frequency band approx. 5 to 9.9 MHz) contained in the base- band of the received composite satellite signal are converted to an output frequency of 10.52 MHz and 10.7 MHz for example. The converter consists of a high-pass input filter followed by a double balanced mixer and a low impedance output. The signal of the on chip voltage controlled oscillator (VCO) is applied to the PLL input. 7.5 IF Limiter with Demodulator The two limiter amplifiers are implemented as balanced five stage, capacitively coupled differential amplifiers. The three inputs are designed as high-pass inputs. The load resistors for the IF filters are connected to ground. The output signals of the limiter amplifiers are fed directly to the internal PLL FM demodulators. The demodulated AF signals are fed to the input of a pre volume control part in front of the expander the de- emphasis networks and audio switches. Byte Data Remarks Address Byte 0 1 0 0 0 0 MA R/W A Progr. Divider Byte 1 0 0 N11 N10 N9 N8 N7 N6 A Progr. Divider Byte 2 0 0 N5 N4 N3 N2 N1 N0 A Control Byte 1 1 5I Z2 Z1 Z0 X X X A Control Byte 2 1 VL2 VL1 VL0 VR2 VR1 VR0 X A Control Byte 3 1 PVL2 PVL1 PVL0 PVR2 PVR1 PVR0 X A Address Byte 11 1. Chip address (CAS) Pin 5 grounded 0 1 0 0 0 1 0 0 A =H44 Address Byte 22 2. Chip address (CAS) Pin 5 open 0 1 0 0 0 1 1 0 A =H46 Control Bits IF-Source Function Z2 Z1 Z0 IF1 IF2 IF3 0 0 0 on on off expanders are working, audio = stereo 0 0 1 off on off expanders are working, audio = mono 0 1 0 on off off expanders are working, audio = mono 0 1 1 off off on de-emphasis = 50 µ; audio = mono 1 0 0 off off on de-emphasis = 75 µ; audio = mono 1 0 1 off off on de-emphasis = J17; audio = mono 1 1 0 off off off External audio 1 1 1 off off off Mute |
同様の部品番号 - TDA6170 |
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同様の説明 - TDA6170 |
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