X450

Raspberry pi HD Audio X450

Switching power supply for X450

Overview

X450 DAC+AMP Expansion Board

Features


	Item	Description
	Compatible with	Raspberry Pi 1 Model B+/ 2 Model B / 3 Model B / 3 Model B+
	Operating System	Moode Audio Player OSMC Openelec Raspbian Jessie Volumio Pi Core Player
	Key Features	Full-HD audio – up to 24-bit/192kHz playback Audiophile ESS Technology Sabre premier stereo DAC ES9023 ES9023 delivers jitter-free studio quality audio with 112dB DNR Built in High quality Class-D stereo audio amplifiers (TI TPA3116D2 x2) Up to 2×100W Into a 4-Ω BTL Load at 21Vdc Capable of driving 4 Ohm speakers (also works with higher impedance speakers) Uses the Texas Instruments ultra-low-noise voltage regulator (output noise< 10μVRMS) Uses the Texas Instruments high efficiency step-Down DC converter (up to 95%) 6V~26Vdc converted to 5.1V, 3A to power the Raspberry Pi Uses the genuine ALPS RK163 series potentiometer for smooth volume adjustment Built in high quality IR sensor (Vishay -the world's leading supplier of infrared receivers) Onboard 3.5mm stereo headphone jack allowing audio input form other audio devices Onboard pluggable speaker & power screw terminals Onboard PH2.0 connector allowing to connect a lighted power switch Onboard XH2.54 connector providing 5V output to power other devices Onboard gold-plated high-current DC power jack (5.5x2.5mm) Uses the digital I2S audio signals to reduce CPU load over USB audio solutions Connects directly to the Raspberry Pi - No wiring required Powers the Raspberry Pi - no additional power supply Reserved Raspberry Pi GPIO pin header (2x13Pins) Pop-noise can be improved by enabling GPIO control AMP can be enabled / disabled with jumper link Heat-sink attached to amplifiers for perfect heat dissipation
	Specification	Power supply: 6-26Vdc，≥3A recommended GPIO used : LRCK - IO19, BCK - IO18, DATA - IO21, IR - IO26, AMP mute - IO22 Analog audio input level via onboard headphone jack : 2V RMS Amplifier max output power: 2×100W at 4Ω BTL Load at 21Vdc Resolution/Sampling Rate: upto 24bit / 192KHz (Raspberry Pi I2S) PCB size 87 x 56mm
	Note	WARNING: Do not apply power to your Raspberry Pi via the PI's Micro USB socket.

Packing List

1 x X450
1 x Installation screw pack

Document

Function Description

Software Configuration: X450/X5500_Software_Configuration

Power Supply

This is single output 24V 10A 250W Switching power supply, and it can provide upto 250W power output.

Generay Specification

	Item	Description
	Model	S-250-24
	DC output voltage, current	24V, 0~10A
	Wave and noise	150mVp-p
	Inlet wire stability	±1%
	Load stability	±1%
	Efficiency	81.50%
	Adjustable range for DC voltage	±10%
	Input voltage range	90~132VAC / 180~264VAC by Switch
	Impact current (Cold start current)	25A/114VAC 50A/230VAC
	OverLoad protection	105% ~ 135% cut off the output, automatic recovery
	Over voltage protection	115%~150% shut down O/P voltage, re-power on the recovery
	Setup, rise, hold up time	200ms, 50ms, 16ms/230vac at full load
	Withstand voltage	I/P-O/P 1.5kV I/P-FG 1.5kV O/P-FG 0.5kV 1minute
	Isolation resistance	I/P-O/P I/P-FG O/P-FG 500VDC/100MΩ
	Working temperature	-10℃ ~ +50℃
	Dimension	215 x 115 x 50mm

FAQ

1. How to use the pin header marked “PWR ON” , “SPK MUTE” and “AMP OFF”?.

PWR ON: Short - Auto power on when power applied, Open – Using an external latching switch to control power on/off
SPK MUTE: Short – Speaker un-muted, Open – Mute enabled and it is controlled by GPIO22 with additional software setting e.g high = speaker unmuted, Low=speaker muted
AMP OFF: Short – speaker in shutdown mode, Open – Speaker in operation mode