Renesas Electronics Corporation
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Turntable System

Overview

Music lovers seek the authentic warmth of vinyl paired with the convenience of digital playback and archiving. This turntable system delivers smooth motor control, clean power, and precise audio processing for rich sound quality and effortless USB connectivity. An ultra-low power motor control MCU ensures accurate rotation speeds, while user-adjustable switches allow for personalized playback control. A synchronous buck regulator efficiently steps down 24V to 3.3V, with an LDO minimizing noise for pristine audio performance. The op amp-driven RIAA preamplifier reproduces analog sound, delivering warm audio to amplifiers or powered speakers via RCA connections. With USB output, users can digitize vinyl playback for custom playlists, effects, or recording.

System Benefits:

  • User-configurable settings via switches for personalized playback experiences
  • Enhanced audio quality with op amps, minimizing noise and distortion
  • Clean and stable power delivery to sensitive audio components

Block Diagram

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Turntable System

WS132-1 Connector Arrow.124 Connected signals line Connector Line.146 Connector Line.229 Sheet.1 Sheet.2 Sheet.3 Sheet.4 WS132-1 WS132-1 WS132-1 SPST NO Switch Sheet.30 Sheet.31 Sheet.32 Sheet.33 Sheet.34 Sheet.35 Connector Arrow Connector Arrow.37 24V 24V 24V Connector Arrow.39 3.3V 3.3V 3.3V Connected signals arrow Connected signals arrow.42 3.3V 3.3V 3.3V Resistor - Fixed Diode - LED Sheet.82 Sheet.83 Sheet.84 Sheet.85 Sheet.86 Darlington.651 Sheet.88 Darlington.254 Connector Line Ground Sheet.104 Sheet.105 On/Off Light On/Off Light On/Off Light Resistor - Fixed.108 Connector Arrow.109 Connector Line.110 Connector Arrow.112 Connector Arrow.114 Connector Arrow.116 Vertical Wire Bundle 2 2 2 Sheet.119 Connector Arrow.121 Connector Arrow.122 3V 3V 3V Vertical Wire Bundle.125 6 6 6 Sheet.127 Bi-directional Vertical Wire Bundle.130 2 2 2 Sheet.132 Bi-directional.134 Vertical Wire Bundle.135 3 3 3 Sheet.137 Resistor - Fixed.138 Connector Line.139 Ground.141 Sheet.142 Sheet.143 Resistor - Fixed.144 Resistor - Fixed.145 Connector Line.147 Vertical Wire Bundle.148 2 2 2 Sheet.150 Diode - LED.151 Sheet.152 Sheet.153 Sheet.154 Sheet.155 Sheet.156 Darlington.651 Sheet.158 Darlington.254 Diode - LED.160 Sheet.161 Sheet.162 Sheet.163 Sheet.164 Sheet.165 Darlington.651 Sheet.167 Darlington.254 Ground.169 Sheet.170 Sheet.171 Ground.172 Sheet.173 Sheet.174 Strobe Light Strobe Light StrobeLight Landing Light Landing Light LandingLight Connector Arrow.177 3.3V 3.3V 3.3V BLDC Motor Square.40 Inductor.10 Sheet.182 Sheet.183 Sheet.184 Inductor.14 Sheet.186 Sheet.187 Sheet.188 Inductor.18 Sheet.190 Sheet.191 Sheet.192 Dynamic connector Dynamic connector.27 Dynamic connector.25 Square Sheet.197 Square.41 Sheet.199 Sheet.200 Sheet.201 Connector Arrow.202 Vertical Wire Bundle.203 3 3 3 Sheet.205 Tonearm/ Cartridge Tonearm/ Cartridge Tonearm/ Cartridge Connected signals arrow.230 Connector Line.231 Connector 2 Connector Arrow.233 Connector Line.234 Connector 2.235 Connector 2.236 Line Connector Line.239 Connector Arrow.240 Phono Phono Phono Line Line Line Input DC/DC Buck DC/DC Buck DC/DC Buck LDO LDO LDO HVPAK HVPAK HVPAK Pitch Control Pitch Control Pitch Control Switch for Pitch Control Switch for Pitch Control Switch for Pitch Control 33/45/78 RPM Control Buttons 33/45/78 RPM Control Buttons 33/45/78 RPM Control Buttons Play/Pause Play/Pause Play/Pause IPS IPS IPS RCA OUT RCA OUT RCA OUT RIAA Preamp RIAA Preamp RIAA Preamp Sheet.246 MCU MCU MCU Vdd Vdd Vdd ADC ADC ADC GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO PWM PWM PWM SCI/I2C SCI/I2C SCI/I2C SCI/UART SCI/UART SCI/UART ADC ADC ADC GPIO GPIO GPIO

MCU

RA Arm Cortex-M MCUs

DC/DC Buck

Buck Regulators (Integrated FETs)

LDO

Linear Regulators (LDO)

RIAA Preamp

Precision Op Amps (Vos <1mV)

Turntable System with USB Output

WS132-2 Connected signals line Connector Arrow.124 Connector Line.146 Connector Arrow.254 Sheet.1 Sheet.2 Sheet.3 Sheet.4 WS132-2 WS132-2 WS132-2 SPST NO Switch Sheet.30 Sheet.31 Sheet.32 Sheet.33 Sheet.34 Sheet.35 Connector Arrow Connector Arrow.37 24V 24V 24V Connector Arrow.39 3.3V 3.3V 3.3V Connected signals arrow Connected signals arrow.42 3.3V 3.3V 3.3V Resistor - Fixed Diode - LED Sheet.82 Sheet.83 Sheet.84 Sheet.85 Sheet.86 Darlington.651 Sheet.88 Darlington.254 Connector Line Ground Sheet.104 Sheet.105 On/Off Light On/Off Light On/Off Light Resistor - Fixed.108 Connector Arrow.109 Connector Line.110 Pitch Control Pitch Control Pitch Control Connector Arrow.112 Switch for Pitch Control Switch for Pitch Control Switch for Pitch Control Connector Arrow.114 33/45/78 RPM Control Buttons 33/45/78 RPM Control Buttons 33/45/78 RPM Control Buttons Connector Arrow.116 Vertical Wire Bundle 2 2 2 Sheet.119 Play/Pause Play/Pause Play/Pause Connector Arrow.121 Connector Arrow.122 3V 3V 3V Vertical Wire Bundle.125 6 6 6 Sheet.127 Bi-directional Vertical Wire Bundle.130 2 2 2 Sheet.132 IPS IPS IPS Bi-directional.134 Vertical Wire Bundle.135 3 3 3 Sheet.137 Resistor - Fixed.138 Connector Line.139 Ground.141 Sheet.142 Sheet.143 Resistor - Fixed.144 Resistor - Fixed.145 Connector Line.147 Vertical Wire Bundle.148 2 2 2 Sheet.150 Diode - LED.151 Sheet.152 Sheet.153 Sheet.154 Sheet.155 Sheet.156 Darlington.651 Sheet.158 Darlington.254 Diode - LED.160 Sheet.161 Sheet.162 Sheet.163 Sheet.164 Sheet.165 Darlington.651 Sheet.167 Darlington.254 Ground.169 Sheet.170 Sheet.171 Ground.172 Sheet.173 Sheet.174 Strobe Light Strobe Light StrobeLight Landing Light Landing Light LandingLight Connector Arrow.177 3.3V 3.3V 3.3V BLDC Motor Square.40 Inductor.10 Sheet.182 Sheet.183 Sheet.184 Inductor.14 Sheet.186 Sheet.187 Sheet.188 Inductor.18 Sheet.190 Sheet.191 Sheet.192 Dynamic connector Dynamic connector.27 Dynamic connector.25 Square Sheet.197 Square.41 Sheet.199 Sheet.200 Sheet.201 Connector Arrow.202 Vertical Wire Bundle.203 3 3 3 Sheet.205 Tonearm/ Cartridge Tonearm/ Cartridge Tonearm/ Cartridge Connector Line.229 Connected signals arrow.230 Connector Line.231 Connector 2 Connector Arrow.233 Connector Line.234 Connector 2.235 Connector 2.236 Line Connector Line.239 Connector Arrow.240 Connector Arrow.246 Connector Line.247 Connector Arrow.248 3.3V 3.3V 3.3V Line Line Line Phono Phono Phono Laptop Vertical Wire Bundle.255 2 2 2 Sheet.257 Input DC/DC Buck DC/DC Buck DC/DC Buck LDO LDO LDO RIAA Preamp RIAA Preamp RIAA Preamp Audio Codec Audio Codec Audio Codec HVPAK HVPAK HVPAK Sheet.259 MCU MCU MCU Vdd Vdd Vdd ADC ADC ADC GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO PWM PWM PWM SCI/I2C SCI/I2C SCI/I2C SCI/UART SCI/UART SCI/UART ADC ADC ADC GPIO GPIO GPIO SPI/I2C SPI/I2C SPI/I2C USB USB USB RCA OUT RCA OUT RCA OUT

MCU

RA Arm Cortex-M MCUs

DC/DC Buck

Buck Regulators (Integrated FETs)

LDO

Linear Regulators (LDO)

RIAA Preamp

Precision Op Amps (Vos <1mV)

Audio Codec

Audio Codecs