lx1705 Microsemi Corporation, lx1705 Datasheet
lx1705
Related parts for lx1705
lx1705 Summary of contents
Page 1
... The stereo BTL (Bridge-tied-load) configuration uses 3-level PWM modulation. This allows eliminating the LC filter to reduce the system cost and simplify the system design. The LX1705 outputs 8W into each of two channels with better than 90% efficiency. The entire signal path from input to output is differential to reject any sources of common-mode noise or distortion ...
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... Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 8+8W Stereo Filterless Class-D Amplifier ® θ A 21.6°C/W MBIENT JA x θ Microsemi Analog Mixed Signal Group LX1705 RODUCTION ATA HEET STBY ...
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... PVSS, connect at one point to the power ground plane. Differential analog audio inputs for each channel. The common mode voltage will be set by the LX1705 to around 2.25V. Differential high power audio outputs for each channel. Each output will swing between PVDD and PVSS. These outputs are driven by an on-chip H-bridge output driver which uses low R NFETs ...
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... DSON REC MUTE Mute Mode TH STBY TH Microsemi Analog Mixed Signal Group LX1705 D S RODUCTION ATA HEET < 85°C except where A = 24.9kΩ ROSC LX1705 Units Min Typ Max 250 300 350 4.5 4.9 500 4.5 5.5 4.25 4.50 250 ...
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... F = 20Hz~20khz IN RMS IN SNR F = 1kHz @ 20Hz-20kHz A-weighted IN V Input short, non A-weighted @ 20Hz-20kHz N Microsemi Analog Mixed Signal Group LX1705 D S RODUCTION ATA HEET = 25kΩ 8Ω. OSC L LX1705 Min Typ Max 1kHz IN 0.2 = 1kHz IN 0.5 0 -40 90 200 µV Units W % ...
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... PWM - OSC MUTE PVDD CONTROL BLOCK -UVLO -De-Pop Mute -Thermal + PWM - Figure 1 – Simplified Block Diagram Microsemi Analog Mixed Signal Group LX1705 D S ATA HEET PVDD1 PVSS1P BOOT1P OUT1P NFET H-BRIDGE BOOT1N OUT1N PVSS1N ROSC VREF STATUS TMON ...
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... AUDIO ANALYZER CHB OUTPUT J2 LX1705 EVALUATION BOARD Note: Speaker Load is simulated with 8Ω resistor in series with 66µH inductor for 8Ω speaker and 4Ω resistor in series with 33µH inductor for 4Ω speaker Copyright © 2007 Rev. 1.2, 2007-03-20 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 8+8W Stereo Filterless Class-D Amplifier ® ...
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... C13 1µF C16 1µ TP8 TP9 2P 2N CR8 1N5817 CR7 1N5817 Figure 3 – Typical Application Microsemi Analog Mixed Signal Group LX1705 RODUCTION ATA HEET TEST PURPOSE TP4 RT-P R8 470 R9 470 C23 C24 4.7nF 2.2nF OUTR+ OUTR- TEST PURPOSE ...
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... Above 150°C, the LX1705 forces all outputs to PVSS so that no power is dissipated until the chip cools down to 110°C. A dynamic thermal protection scheme operates by placing temperature sensors near each of the output devices ...
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... PCB DESIGN GUIDELINES Component placement for the LX1705 should be done See such that low-level inputs to the LX1705 are routed away from the high frequency switching outputs. Special care should be given to the bypass and bootstrap capacitors. Capacitors (C7, C10, C13, C16, C8, C9, C14, and C15 in the application schematic), should be placed as close to the IC as possible ...
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... Via Barrel diameter: 0.3mm Min. Via Barrel plating: 0.025mm Center to center spacing: 1.2mm For the LX1705 5x5mm MLPQ package, there will be enough space for 9 vias. This method is recommended for use on a multilayer board, and will give the best thermal performance. Thermal vias may be used on a two layer board as well, with reduced performance ...
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... Microsemi Analog Mixed Signal Group LX1705 D S RODUCTION ATA HEET 12V, 8 Ohm Load with External Diodes 200m 500m 9V, 4 Ohm Load, With External Diodes 200m 500m 12V, 8 Ohm Load, With External Diodes ...
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... 10k 20k Microsemi Analog Mixed Signal Group LX1705 D S RODUCTION ATA HEET 9V, 4 Ohm Load, With External Diodes 50 100 200 500 10k Hz 4 Ohm Load, 5V, 6V, 7V, 8V, 9V ...
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... RMS Microsemi Analog Mixed Signal Group LX1705 D S RODUCTION ATA HEET Channel Crosstalk @ 8 ohm 100 200 500 10k Hz Noise Floor @ 8 ohm 100 200 500 10k ...
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... Stereo Filterless Class-D Amplifier ® +30 +28 +26 +24 +22 +20 +18 +16 +14 +12 + 750k 850k 950k 1,050k 1,150k +0 20 Microsemi Analog Mixed Signal Group LX1705 RODUCTION ATA HEET GAIN @ 8 ohm 50 100 200 500 10k 20k 50k Hz 80k Page 15 ...
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... L Note Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall not include solder coverage. Pin 1 ID Bottom Microsemi Analog Mixed Signal Group LX1705 RODUCTION ATA HEET M I ILLIMETERS NCHES ...
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... Copyright © 2007 Rev. 1.2, 2007-03-20 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 8+8W Stereo Filterless Class-D Amplifier ® P RODUCTION Microsemi Analog Mixed Signal Group LX1705 D S ATA HEET Page 17 ...