tc9470fn TOSHIBA Semiconductor CORPORATION, tc9470fn Datasheet - Page 6

• Manufacturer Part Number: tc9470fn
• Description: Modulation Da Converter With Built-in 8-times Oversampling Digital Filter/dynamic Digital Bass Boost/analog Filter
• Manufacturer: TOSHIBA Semiconductor CORPORATION

3. Digital Filter
4. De-Emphasis Filter
í10.00
í20.00
í30.00
í40.00
í50.00
í60.00
í70.00
í80.00
í90.00
í100.0
0.000
during standard operations.
microcontroller setting mode for further details on serial mode settings.)
0
The 8-times oversampling IIR digital filter eliminates the noise returned from outside the bandwidth
The characteristics of the digital filter frequencies are shown below.
ON/OFF is controlled in the parallel mode (
This is set in the serial mode (
Table 2 De-Emphasis Filter Settings (when in the parallel mode)
Standard operations
44.1
Set Mode
Frequency (kHz)
Figure 3 Digital Filter Frequency Characteristics
Table 1 Basic Characteristics of Digital Filter
88.2
De-emphasis filter
132.3
Shift (EMP) Pin
Passband Ripple
P/
S
±0.11dB
= “L”) with a microcontroller or other equipment. (refer to 0.2
176.4
P/
S
6
= “H”) with the SHIFT (EMP) pin (pin 9).
Transient Bandwidth
20 k to 24.1 kHz
í0.00
í0.10
í0.20
í0.30
í0.40
í0.50
í0.60
í0.70
í0.80
í0.90
í1.00
0
ON
H
2.0
4.0 6.0 8.0
Frequency (kHz)
OFF
L
10.0
í26dB or less
Attenuation
12.0
14.0
16.0
18.0
20.0 22.0
TC9470FN
0.65dB
2002-02-27
24.0