New wolfson spdif transceivers offer exceptional 8805. Single wolfson wm8742 24bit vs dual wolfson wm8740 24bit. The wm8740 also includes a digitally controllable mute and attenuator function on each channel. Getting the wolfson audio card working with volumio. You cd player probably has the wolfson chip that is even below the wm8741 so again it is hard to know. The 23 wire serial control interface provides access to all features. Since at least current dacmagic has its own separate dspbased digital filters that difference gets a completely different context. Wolfson, alldatasheet, datasheet, datasheet search site for electronic components and. Biggest difference between these two are the digital filters builtin. Meanwhile, wolfson microelectronics, an audio chip maker with far more sophisticated technology and. Differences among these or is this another speaker wirecables. A range of features can also be accessed by hardware control interface. Esss top competitor is the es9012 es9012 is the stereo version of the es9018 both sabre32 reference.
The wm8741 is available in a convenient 28ssop package, and is pin compatible with the. Smartphones have all but made the mp3 player obsolete, and consumers are demanding higher levels of quality each year. Wolfson, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. I was looking at the specs of the cambridge audio dacmagic 100 and dacmagic plus. It specialised in signal processing and mixedsignal chips for the consumer electronics market and had engineering and sales offices throughout asiapacific, europe and the united states. But then i was thinking maybe there is a better dac option in my situation. Description the wm8740 is a very high performance stereo dac designed for audio applications such as cd, dvd, home theatre systems, set top boxes and digital tv. Texas instruments tms 320vc5501 dsp upsampling to 24bit 192khz analogue filter. The wm8740 is a stereo digitalanalog converter dac that supports a spicompatible serial control interface to support onchip mute, attenuation and phase reversal, as well as a hardware controllable interface.
So when i heard that there is an audibly superior, newer, smoother, more analog, more liquid wm8741 i was very eager to try it. The wm8740 consists of a serial interface port, digital interpolation filter, multibit sigma delta modulator and stereo dac in a small 28pin ssop package. Smd capacitors and resistors have size 1206 that they can be easily soldered. Whereas the datasheet for the wm8740 refers to an acceptable typical range of 3. Wolfson wm5110 audio chip outputs studio master sound. One wolfson wm8741 dac chip as in my arcam rdac or. This device accepts data input from 16 to 24bits and sampling rates up to 192 khz. Thats why most dacs with the wm8741 are upsampling. The wm8741 is a stereo digitalanalog converter dac that provides fine resolution volume, soft mute control, digital deemphasis and a range of advanced digital filter responses, followed by a digital interpolation filter, multibit sigma delta modulator and stereo dac. The headers on the board then become the active source for. Apollo all four of the following cd players use the wolfson wm8740 dac. The wm8761 consists of a serial interface port, digital.
Wolfson microelectronics plc was a microelectronics and fabless semiconductor company headquartered in edinburgh, scotland. Unfortunately the wolfson dac isnt on their supported list. Wm8740 datasheethtml 1 page wolfson microelectronics plc. They also support a variety of i2s dacs since the default audio output on the raspberry pi is prone to lots of clicks and pops. If you are just comparing the specs of the chip itself you still have to know the exact model. Wm8740 datasheetpdf 1 page wolfson microelectronics plc. This bit of silicon isnt in any marketready handsets just yet, hence the diy setup. The wm8741 includes fine resolution volume and soft mute control, digital deemphasis and a range of advanced digital filter responses, followed by a digital interpolation filter, multibit sigma delta modulator and stereo dac. I prefer the tiny little shoebox of the dacmagic 100 but noticed that it comes with a single wolfson wm8742 dac chip whereas the bigger brother comes with dual wolfson wm8742 dac chips. Msl1 unlimited floor life at list all phones by gatordoug mar 2, 20 10.
On top of that, the dacmagic plus has digital and analog filters. This arrangement delivers 16 paralleled dacs per side as compared to the single wolfson wm8741 dac per channel of the a1. The device optimizes the dac linearity and provides maximum insensitivity. Its a lot more than just slapping together a bunch of parts onto a board.
The wm8741 supports two connection schemes for audio dac control. Very lightly used dacmagic digital to analogue converter includes all original. And the use of highprecision active 10ppm crystal quality has further improved. The reason why the wm8740 is still used a lot instead of the wm8741 is because the latter requires input on the sample rate which complicates the circuit. Wolfson tests its package types according to ipcjedec jstd020b for moisture sensitivity to determine acceptable storage conditions prior to surface mount assembly. Ultimate dac based on a pair of wolfson wm8741 chips 5 transformers every active component has its own transformer winding and power supply. What youre looking at above is a demo board carrying a nextgen wolfson wm5110 audio chip for smartphones. New wolfson spdif transceivers offer exceptional jitter suppression in the audio band. How things went wrong for the audio company that could. Wolfson is a very well venerated dac manufacturer that offers many types of dacs and weve chosen the wm8741 which is their flagship dac topoftheline most expensive best signaltonoiseratio adjustable filters. Ape, flac, wav, wma, aac, alac, aiff, ogg, mp3 support sdxc and sdhc microsd card, up to 2tb. The wm8740 supports data input word lengths from 16 to 24bits and sampling rates up to 192khz. For example, the wolfson wm8741 has better specs than the ak4458 that is probably the one in your 7702mkii but the wm8740 is not. The fact that the ibasso dzero mk2 uses 2 chips one per channel was impressive.
Wolfsons patented architecture optimises the linearity of the dac and provides maximum insensitivity to clock jitter. Two wolfson wm8740 in serial as found in the upcoming dacmagic plus from cambridge audio. Wm8740 datasheet pdf 1 page wolfson microelectronics plc. Wm8741 wolfson microelectronics plc, wm8741 datasheet. Wm8761 datasheetpdf 1 page wolfson microelectronics plc. The dac chip certainly matters a lot, but the surrounding stuff matters too.
Many thanks for your post, because of it i was able to diagnose and fix my own wm8741 dac design which exhibited fairly high distortion 70db highest harmonic, and great many of them. Dac and operational amplifier are not common available in my local store. Wolfson 192 khz24 bit wm8742 vs cirrus logic cs4382a vs analog devices ad1955 does anyone know if there are significant, if any. Wolfson 192 khz24 bit wm8742 vs cirrus logic cs43 the. I havent seen the schematic of the dacmagic, but in the. Mds is a technique for reducing conversion errors to improve the measurable. Analog devices ad1955 i added 12112 burr brown pcm1795. High performance stereo dac i ask because i have a pioneer elite dv 58av and a dacmagic and wanted to know if it would benefit to. The wm8804 and wm8805 are high performance solutions for spdif data recovery, routing and data transfer. Man i have been waiting for this moment after being enamourated in the old wm8740, i could not get enough of it.
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