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ASAHI KASEI

[AKD4385-SC]

<KM082701> 1 2006/04

General Description

The AKD4385-SC is an evaluation board for AK4385, which is 192kHz sampling 24Bit

∆Σ

DAC. The

AKD4385-SC includes a LPF which can add differential analog outputs from the AK4385 and also has a digital
interface. Therefore, it is easy to evaluate the AK4385.

Ordering Guide

AKD4385-SC --- Evaluation board for AK4385

Function

On-board Analog output buffer circuit

On-board digital audio interface. (AK4113)

AK4385

AK4113

COAX In

Rch

Lch

DIR

Opt In

2nd Order

LPF

AGND -15V

+3.3V

Reg

+15V

Reg

+5V

PORT1
EXT

PORT2
Control
Data

Figure 1. Block diagram

* Circuit diagram and PCB layout are attached at the end of this manual.

COAX is recommended for an evaluation of the Sound quality.

AK4385 Evaluation board Rev.1

AKD4385-SC

Содержание AKD4385-SC

Страница 1: ...is easy to evaluate the AK4385 Ordering Guide AKD4385 SC Evaluation board for AK4385 Function On board Analog output buffer circuit On board digital audio interface AK4113 AK4385 AK4113 COAX In Rch L...

Страница 2: ...nected to power supply 15V Blue 12 15V For op amps This jack should be always connected to power supply AGND Black 0V GND This jack should be always connected to power supply Table 1 Set up of power s...

Страница 3: ...disk The DIR generates MCLK BICK LRCK and SDATA from the received data through optical connector PORT3 TORX176 Setting of jumper is shown below JP4 OPT COAX RX Figure 3 Jumper setting when using DIR...

Страница 4: ...nal LPF is required Analog signal is output through BNC connectors on the board And the output level of the AK4382A is 5 5Vpp 5V LOUT ROUT LOUT ROUT 15V 15V NJM4580D R1 C1 R3 R2 C2 R1 R3 R2 C2 22u 10k...

Страница 5: ...low Keep the following flow 1 Set up the control program according to explanation above 2 Click Port Reset button Explanation of each buttons 1 Port Reset Set up the USB interface board AKDUSBIF A in...

Страница 6: ...AK4385 click OK button If not click Cancel button 3 Function2 Dialog Dialog to evaluate ATT Address Box Input registers address in 2 figures of hexadecimal Start Data Box Input starts data in 2 figur...

Страница 7: ...ion of file name is akr Operation flow 1 Click Save Button 2 Set the file name and push Save Button The extension of file name is akr 4 2 Open The register setting data saved by Save is written to AK4...

Страница 8: ...Interval time Set 1 to the address of the step where the sequence should be paused 3 Click Start button Then this sequence is executed The sequence is paused at the step of Interval 1 Click START butt...

Страница 9: ...KD4385 SC KM082701 9 2006 04 6 Function4 Dialog The sequence that is created on Function3 can be assigned to buttons and executed When F4 button is clicked the window as shown in Figure 5 opens Figure...

Страница 10: ...is executed 6 2 SAVE and OPEN buttons on right side SAVE The sequence file names can assign be saved The file name is ak4 OPEN The sequence file names assign that are saved in ak4 are loaded 6 3 Note...

Страница 11: ...utton and select the register setting file akr 2 Click WRITE button then the register setting is executed 7 2 SAVE and OPEN buttons on right side SAVE The register setting file names assign can be sav...

Страница 12: ...3 dB DR 1kHz 60dB 22kLPF A weighted 108 7 dB 108 7 dB S N 0 data 22kLPF A weighted 109 3 dB 109 3 dB fs 96kHz Parameter Input signal Measurement filter Lch Rch S N D 1kHz 0dB 40kLPF 91 3 dB 91 5 dB 4...

Страница 13: ...0 140 130 120 110 100 90 80 70 60 50 40 30 20 10 d B r A 20 20k 50 100 200 500 1k 2k 5k 10k Hz Figure 8 FFT fin 1kHz 0dBFS input AKM AK4385 FFT VDD 5V fs 44 1kHz MCLK 512 60dBFS input fin 1kHz 180 0 1...

Страница 14: ...20 110 100 90 80 70 60 50 40 30 20 10 d B r A 20 20k 50 100 200 500 1k 2k 5k 10k Hz Figure 10 FFT Noise Floor AKM AK4385 FFT Out of band noise VDD 5V fs 44 1kHz MCLK 512fs fin No signal 180 0 170 160...

Страница 15: ...15 110 105 100 95 90 85 80 75 d B r A 120 0 110 100 90 80 70 60 50 40 30 20 10 dBFS Figure 12 THD N vs Input level fin 1kHz AKM AK4385 THD N vs Input Frequency VDD 5V fs 44 1kHz MCLK 512fs 0dBFS input...

Страница 16: ...0 50 40 30 20 10 d B r A 120 0 110 100 90 80 70 60 50 40 30 20 10 dBFS Figure 14 Linearity fin 1kHz AKM AK4385 Frequency Response VDD 5V fs 44 1kkHz MCLK 512fs 0dBFS input 1 1 0 9 0 8 0 7 0 6 0 5 0 4...

Страница 17: ...2701 17 2006 04 fs 44 1kHz AKM AK4385 Crosstalk Red Lch Blue Rch VDD 5V fs 44 1kHz MCLK 512fs 0dBFS input 140 80 135 130 125 120 115 110 105 100 95 90 85 d B 20 20k 50 100 200 500 1k 2k 5k 10k Hz Figu...

Страница 18: ...0 110 100 90 80 70 60 50 40 30 20 10 d B r A 40 40k 50 100 200 500 1k 2k 5k 10k 20k Hz Figure 17 FFT fin 1kHz 0dBFS input AKM AK4385 FFT fs 96kHz MCLK 256fs fin 1kHz 0dBFS input Notch ON 180 0 170 160...

Страница 19: ...160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 d B r A 40 40k 50 100 200 500 1k 2k 5k 10k 20k Hz Figure 19 FFT fin 1kHz 60dBFS input AKM AK4385 FFT VDD 5V fs 96kHz fin No signal 180 0 170 160...

Страница 20: ...110 105 100 95 90 85 80 75 d B r A 120 0 110 100 90 80 70 60 50 40 30 20 10 dBFS Figure 21 THD N vs Input level fin 1kHz AKM AK4385 THD N vs Input Frequency VDD 5V fs 96kHz MCLK 256fs 0dBFS input 120...

Страница 21: ...r A 130 0 120 110 100 90 80 70 60 50 40 30 20 10 dBFS Figure 23 Linearity fin 1kHz AKM AK4385 Frequency Response VDD 5V fs 96kHz MCLK 256fs 0dBFS input 1 1 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 1 0...

Страница 22: ...2701 22 2006 04 fs 96kHz AKM AK4385 Crosstalk Red Lch Blue Rch VDD 5V fs 96kHz MCLK 256fs 0dBFS input 140 80 135 130 125 120 115 110 105 100 95 90 85 d B 40 40k 50 100 200 500 1k 2k 5k 10k 20k Hz Figu...

Страница 23: ...0 110 100 90 80 70 60 50 40 30 20 10 d B r A 90 80k 200 500 1k 2k 5k 10k 20k 50k Hz Figure 26 FFT fin 1kHz 0dBFS input AKM AK4385 FFT VDD 5V fs 192kHz MCLK 128fs 0dBFS input fin 1kHz Notch ON 180 0 17...

Страница 24: ...0 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 d B r A 90 80k 200 500 1k 2k 5k 10k 20k 50k Hz Figure 28 FFT fin 1kHz 60dBFS input AKM AK4385 FFT VDD 5V fs 192kHz MCLK 128fs fin No signal 180 0 1...

Страница 25: ...5 110 105 100 95 90 85 80 75 d B r A 120 0 110 100 90 80 70 60 50 40 30 20 10 dBFS Figure 30 THD N vs Input level fin 1kHz AKM AK4385 THD N vs Input Frequency VDD 5V fs 192kHz MCLK 128fs 0dBFS input 1...

Страница 26: ...0 10 d B r A 130 0 120 110 100 90 80 70 60 50 40 30 20 10 dBFS Figure 32 Linearity fin 1kHz AKM AK4385 Frequency Response VDD 5V fs 192kHz MCLK 128fs 0dBFS input 3 1 2 8 2 6 2 4 2 2 2 1 8 1 6 1 4 1 2...

Страница 27: ...2701 27 2006 04 fs 192kHz AKM AK4385 Crosstalk Red Lch Blue Rch VDD 5V fs 192kHz MCLK 128fs 0dBFS input 140 80 135 130 125 120 115 110 105 100 95 90 85 d B 90 80k 200 500 1k 2k 5k 10k 20k 50k Hz Figur...

Страница 28: ...e designed or intended for life support or maintenance of safety or for applications in medicine aerospace nuclear energy or other fields in which its failure to function or perform may reasonably be...

Страница 29: ...6 4 2 1 3 5 7 9 PORT2 uP I F PORT2 uP I F R23 470 R23 470 R2 open R2 open R13 5 1 R13 5 1 C6 open C6 open R15 100 R15 100 C5 10p C5 10p 1A 2 1Y 4 1B 3 2A 5 2Y 7 2B 6 3A 11 3Y 9 3B 10 4A 14 4Y 12 4B 1...

Страница 30: ...0 R36 220 R36 220 C54 22u C54 22u R31 4 7K R31 4 7K C49 22u C49 22u R38 4 7K R38 4 7K 3 2 1 8 4 U7A NJM4580 U7A NJM4580 R28 4 7K R28 4 7K C21 470p C21 470p 5 6 7 8 4 U7B NJM4580 U7B NJM4580 C24 NC C24...

Страница 31: ...2Y 4 1Y 2 74HC14 U3 74HC14 U3 2 1 D1 HSU119 D1 HSU119 JP4 RX JP4 RX C19 0 1u C19 0 1u 1 2 L1 short L1 short C16 10u C16 10u R26 short R26 short C29 0 1u C29 0 1u OUT 1 VCC 3 GND 4 GND 2 6 6 5 5 PORT3...

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