TC9490F Datasheet, PDF (12/15 Pages) Toshiba Semiconductor – Digital Servo Single-Chip Processor for Use in CD Player

7. Data Slicer Circuit
(1) Comparator
Characteristics
Input amplitude
Test
Circuit
Test Condition
¾ V_REF refenence
(2) R-2R DAC (digital slicer DAC)
Characteristics
Test
Circuit
Output conversion range
¾
Output impedance
¾
Test Condition
¾
¾
TC9490F/FA
Min Typ. Max Unit
0.6
1.2
2.0
V_pp
Min Typ. Max Unit
AV_SS3 ¾ AV_DD3 V
¾
2.5
¾
kW
8. Audio DAC Characteristics
Characteristics
Total harmonic distortion + noise
S/N ratio
Dynamic range
Crosstalk
Analog output amplitude
Symbol
Test
Circuit
Test Condition
Min Typ. Max Unit
THD + N
1 1 kHz sine wave, full-scale input ¾
-85 -80 dB
S/N
1
¾
87
92
¾
dB
DR
1
1 kHz sine wave,
-60 dB input conversion
85
90
¾
dB
CT
1 1 kHz sine wave, full-scale input ¾ -90 -85 dB
DACout
1 1 kHz sine wave, full-scale input 810 860 910 mV_rms
Test Circuit 1: Application circuit is used.
TC9490F/FA
application circuit
Lout
Rout
20 kHz
ideal LPF
Distortion
meter
LPF: Filter with built-in Shibasoku 725C
Distortion meter: Shibasoku 725 equivalent
Characteristic
THD + N, CT
S/N, DR
Distortion Filter Setting
A-weight
OFF
ON
A-weight: IEC-A equivalent
Application Circuit
TC9490F/FA
3.3 V
XV_DD3
XI
16.9344 MHz
XO
XV_SS3
DV_SS3
RO
150 W 150 W 3.3 mF
3.3 V
DV_DD3
DVR
22 mF
150 W 150 W 3.3 mF
LO
DV_SS3
R-ch analog output
L-ch analog output
12
2001-09-03