MN35503 Datasheet, PDF (7/9 Pages) Panasonic Semiconductor – D/A Converter for Digital Audio Equipment

For Audio Equipment
MN35503
Digital attenuation and reset (Parallel mode)
Table 4 shows how the inputs from the two pins MC (RSBUP) and MD (RSBDN) control digital attenuation
except the serial modes.
Table 4. Attenuation Modes
Pin Name
Pin States and Operating Modes
MC (RSBUP)
L
↑↓
L
↑
H
MD (RSBDN)
L
L
↑
H
↑
Mode
Reset
Mute
Normal
Attenuation control
Volume
Mute (–∞)
0dB
UP
DOWN
Note: The upward arrow indicates the rising edge change of the input signal; the paired arrows, the rising and falling edge
changes.
There are a total of 32 attenuation levels.
According to the attenuation control shown in Table-4, volume goes up or down in one step every input-signal
rising-edge. Still, in the 0 dB state, up-pulse does not change the volume. Similary, in the muting state (–∞), down-
pulse does not change the volume.
The change of the input signals is detected by inner clock of 16 f_s period, so always use a frequency of 8 f_s or less for
changes in the RSBUP and RSBDN signals. Note, however, that changes in attenuation level require a period corre-
sponding to 2 f_s to complete.
Do not simultaneously change the RSBUP and RSBDN signals unless setting up for a reset.
Conversion Characteristics
DV_DD=5.0V, DV_SS=0V, AV_DD=5.0V, AVss=0V, f=16.9344MHz, Ta=25˚C
Analog Characteristics for 20-bit, 1 f_s input
Parameter
Symbol Test Condition
min
typ
Signal-to-noise ratio
EIAJ (1kHz)
108
max
Unit
dB
Dynamic range
D.R.
EIAJ (1kHz)
107
dB
Total harmonic distortion
Output level
THD+N
EIAJ (1kHz)
1 kHz full scale
0.0008 0.0015
%
2.0
V_rms
The above analog characteristics are based on measurements with the sample application circuit using mode 5₀.