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For Audio Equiment
MN6475A
D/A Converter for Digital Audio Equipment
Overview
The MN6475A is a CMOS digital-to-analog converter by noise shaping technology and is designed for PCM digital audio equipment. It features a built-in 4 times oversampling and 16-bit input digital filter. It includes a digital de-emphasis circuit and analog post filter to reduce the parts count and power consumption of the overall D/A conversion system. And also it includes two noise-shaping 1-bit D/A converters, one each for the left and right channels.
Pin Assignment
LRCLK BCLK SRDATA COT1 COT2 TEST VDD
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
XOUT COUT CSEL DEMPH WVEL TP PWML RSTB VDDR OUTR VSSR VSSL
Features
Built-in 4 times oversampling digital filter (Bandwidth ripple of 0.051dB and attenuation of 47.99dB dB) Built-in second order analog post filter with a cutoff frequency of 100 kHz Built-in digital de-emphasis circuit with a deviation between +0.47 dB and - 0.07 dB Choice of normal or double-speed playback Built-in overflow limiter No zero cross distortion Sample-and-hold circuit is unnecessary Choice of 768fs or 384fs operation Single 5V power supply
X2 X1 VSS VDDL OUTL
(TOP VIEW) SOP024-P-0375
Applications
CD players and other digital audio equipment
SDJ00005BEM
1
MN6475A
Block Diagram
For Audio Equipment
PWML
18
12
+
-
15
-
OUTR
OUTL
+
WVEL X1 X2 CSEL COUT XOUT RSTB
20 9 8 22 23 24 17
Timing gen.
PWM Logic (L)
PWM Logic (R)
LR selector
Noise shaping logic
4 times oversampling Digital filter TP 19 Digital de-emphasis 6 S/P converter
21 DEMPH
TEST
3
2
SRDATA
2
LRCLK
BCLK
1
For Audio Equipment
Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Symbol LRCLK BCLK SRDATA COT 1 COT2 TEST VDD X2 X1 VSS VDDL OUTL VSSL VSSR OUTR VDDR RSTB PWML TP WVEL DEMPH CSEL Function Description LRCLK input pin. "H" level; left channel data input "L" level; right channel data Bit clock input pin for serial data Serial data input pin L Stereo output L LSI test mode pin. Crystal oscillator pin Crystal oscillator pin (external clock input pin) Ground pin for digital circuits (0V) Power supply pin for left channel analog circuits (+5V) Left channel analog signal output pin Ground pin for left channel analog circuits (0V) Ground pin for right channel analog circuits (0V) Right channel analog signal output pin Power supply pin for right channel digital circuits (+5V) Reset pin (Active low). Pull this pin low once after applying the power. LSI test output pin. Leave this pin open. Input/Output pin for LSI test mode. Internal operation mode selection pin Digital De-emphasis ON/OFF pin. ON at "H" level. Clock frequency selection pin for COUT pin output. Keep this pin at "L" level. H L Left channel output only H L Right channel output only H H
MN6475A
Output with channels reversed
Keep this pin at "L" level.
Power supply pin for digital circuits (+5V)
"L" level; 1/4 clock frequency from crystal oscillator or external clock signal "H" level; 1/2 clock frequency 23 24 COUT XOUT Frequency-divided clock output Output using frequency from crystal oscillator or external clock signal
3
MN6475A
Conversion Characteristics
VDD=5.0V, VSS=0V, f=33.8688MHz, Ta=25C
For Audio Equipment
Parameter Analog characteristics *1 Signal-to-noise ratio Dynamic range Total harmonic distortion Crosstalk Output level 1 *2 Output level 2 *3
Symbol S/N D.R. THD+N
Test Conditions EIAJ EIAJ EIAJ EIAJ 1kHz F.S. 1kHz F.S.
min 97 90 84 2.0 1.0
typ 104 97 0.003 100 2.3 1.2
max dB 0.006 2.6 1.4
Unit dB dB % dB Vrms Vrms
Notes *1: These analog characteristics are based on measurements in the application circuit example next page. *2: This level is measured at point B in that circuit. *3: This level is measured at point A (LSI output pin) in that circuit.
4
For Audio Equipment
Application Circuit Example
MN6475A
VDDR
VSS
100
+
47F
- +
470F
A
2.2k 0.001F - + 4.7k 4.7k
1000pF
B
560 18k 22F 47k 0.001F
1F SX SX SX SX SX
1200pF 47k
18k
LRCLK BCLK SRDATA COT1 COT2 TEST VDD X2 X1 VSS VDDL OUTL
XOUT COUT CSEL DEMPH WVEL TP PWML RSTB VDDR OUTR VSSR VSSL
24 23 22 21 20 19 18 17 16 15 14 13
MN6475A
A
2.2k 0.001F - +
1000pF 4.7k 4.7k - 22F 1200pF 47k + 560 18k 18k 22F
1 2 3 4 5 6 7 8 9 10 11 12
4.7k
SX SX SX
5pF 5pF
+
1F
+
330F 0.1F
+
+
4.7k
470F
- -
100F
+ -
47F 100
22F
+ -
220F
VDD
VDDL
-
22F
+
-
B
47k 0.001F
-
-
5
MN6475A
Package Dimensions (Unit: mm)
SOP024-P-0375
For Audio Equipment
15.30.3
7.20.2 9.40.3
+0.1 0.15-0.05
2.00.2
0.10.1
0.3 min.
Note) The package of this product will be changed to the following lead-free type (SOP024-P-0375B).
6
0.9
0.40.1
1.27
0.45
For Audio Equipment
New Package Dimensions (Unit: mm)
* SOP024-P-0375B (Lead-free package)
MN6475A
15.270.20
24
13
1.100.20
7.200.20
9.400.30
0.15-0.05
+0.10
0 to 10 0.30 min.
1 (0.67) 1.27 0.40+0.10 -0.05
12 2.000.20 2.40 max. Seating plane 0.100.10
Seating plane
7
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(1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: * Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. * Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company.
Please read the following notes before using the datasheets
A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited.
2001 MAR

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