TC9470FN Datasheet, PDF (17/19 Pages) Toshiba Semiconductor – Modulation DA Converter with Built-in 8-Times Oversampling Digital Filter/Dynamic Digital Bass Boost/Analog Filter

· Test circuit 1: With the use of a sample application circuit
TC9470FN
DATA
LOUT
SG
BCK Application circuit example
LRCK
ROUT
MCK
20 kHz
Ideal LPF
Distortion
factor
gauge
SG: Anritsu: MG-22A or equivalent
LPF: Shibasoku: Built-in 725C distortion factor gauge filter
Distortion: Shibasoku: 725C or equivalent
Parameter
Measured
THD + N, CT
S/N, DR
Distortion Factor Gauge
Filter Setting
A Weight
OFF
A weight: IEC-A or equivalent
ON
· AC characteristics stipulated point (input signal stipulation: LRCK, BCK, DATA)
BCK
DATA
LRCK
50%
50% _td
50% ^td
10% 90%
t_f
10% 90%
t_f
Application Circuit
The following diagram is for reference purposes only and does not guarantee operations.
30 pF
16.9344 M
30 pF
2.7 V
2.7 V
XI
EMPH
TC9236AF
Single-chip processor _Aout
for CD players
BCK
CHCK
MCK
GNDX
XI
XO
V_DX
LATCH
(SM)
SHIFT
(EMP)
ATT
(DBB1)
(DBB2)
DATA
BCX
LRCK
GNDD
ZD
V_DA
LO
GNDA
VR
GNDA
RO
V_DA
P/S
T1
V_DD
2.7 V
220 Ω
ZD
L-ch Analog OUT
22 µF
220 Ω
2.7 V
R-ch Analog OUT
2.7 V
17
2002-02-27