MN35502 Datasheet, PDF (1/8 Pages) Panasonic Semiconductor – D/A Converter for Digital Audio Equipment

For Audio Equipment
MN35502
D/A Converter for Digital Audio Equipment
Overview
The MN35502 is a CMOS digital-to-analog converter
designed especially for PCM digital audio equipment. It
features a built-in digital filter with 16/20-bit input.
It uses pulse edge modulation (PEM) and JVC advanced
noise shaping (VANS) to yield the high resolution and
low distortion ratio equivalent to those of 20-bit systems
covering the range between 0 and 20 kHz.
The chip incorporates an 8-fold oversampling digital
filter that eliminates a low-pass filter after the D/A
converter and thus greatly reduces the power consumption
of the overall D/A conversion system.
Use of single-channel 4PEM output yields a D/A
converter with a low distortion ratio and high signal-to-
noise ratio.
The chip makes a major contribution to reducing the
cost and size of CD players and other digital audio
equipment.
Features
Built-in 20-bit, 8-fold oversampling digital filter
• 2-fold oversampling digital filters with 3-stage cascade
configuration
Bandwidth ripple: within ±0.0042 dB for 0 to 0.454 f_s
Cutoff band attenuation
1±0.454 f_s: min. 94.8dB
2±0.454 f_s: min. 77.4dB
4±0.454 f_s: min. 66.8dB
Transition bandwidth
0.469 f_s:
0.531 f_s:
• Digital filter output: 24 bits
– 0.12dB
–38dB
(Output after data compression with primary noise
shaper)
Built-in digital de-emphasis
fs=44.1 kHz 0 to 18kHz max. deviation ±0.055dB
18 to 20kHz max. deviation 0.115dB
Built-in digital attenuation
Up/down over 32 steps
Support for double-speed operation (192 f_s clock)
Pin Assignment
DIN 1
LRCK 2
BCK 3
M4 4
DV_DD2
5
CKO 6
DV_SS2
7
M1 8
OUT1C 9
OUT1B 10
AV_DD1
11
OUT1D 12
OUT1A 13
AV_SS1
14
28
RSBDN
27
RSBUP
26
M3
25
DV_DD1
24
XIN
23
XOUT
22
DV_SS1
21
M2
20
OUT2C
19
OUT2B
18
AV_DD2
17
OUT2D
16
OUT2A
15
AV_SS2
(TOP VIEW)
SOP028-P-0375
8PEM output configuration (4PEM output per channel)
Support for low-voltage (3.3-volt) operation
Choice of system clocks:
192 f_s, 256 f_s, 384 f_s, 512 f_s, 576 f_s
Choice of input data formats: left-packed, right-
packed, I²S bus (16 or 20 bits, alternating channel input,
MSB first)
Applications
CD players and other digital audio equipment