tda1548tz NXP Semiconductors, tda1548tz Datasheet - Page 4

• Manufacturer Part Number: tda1548tz
• Description: Bitstream Continuous Calibration Filter-dac With Headphone Driver And Dsp
• Manufacturer: NXP Semiconductors

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Philips Semiconductors
BLOCK DIAGRAM
1995 Nov 15
Bitstream continuous calibration filter-DAC
with headphone driver and DSP
CEXT1
1.8 nF
SYSCLK
MODE0
MODE1
CLSEL
10
FILTCL
F
V
SSA
V ref
VOL
12
17
5
6
25
4
3
V
V
DDA
SSA
R CONV1
1.2 k
TIMING
6 k
6 k
OP1
V
SSO
1
IF1
13
V
(SAMPLE-AND-HOLD)
CALIBRATED
CALIBRATED
DDO
8 x OVERSAMPLING
IF2
SWITCHES
CURRENT
SOURCES
CURRENT
16 (4-bit)
16 (4-bit)
OUTPUT
NOISE SHAPER
28
14
SINKS
LEFT
2nd ORDER
ENCODER
DATA
DATA
LINEAR INTERPOLATOR
Fig.1 Block diagram.
SOFT MUTE CONTROL
9
VOLUME CONTROL
SERIAL DATA INPUT
SOUND CONTROL
FILTER STAGE 1
FILTER STAGE 2
REFERENCE
SOURCE
WS
V
4
OP3
8
COM
2
(SAMPLE-AND-HOLD)
8 x OVERSAMPLING
NOISE SHAPER
BCK
2nd ORDER
ENCODER
7
DATA
CALIBRATED
CALIBRATED
SWITCHES
CURRENT
SOURCES
CURRENT
16 (4-bit)
OUTPUT
16 (4-bit)
RIGHT
SINKS
1 f s
2 f s
4 f s
8 f s
V
DDA
23
V DDA
TDA1548T
V SSA
V
SSA
CONTROL
R CONV2
VOLUME
24
SOUND
OP2
1.2 k
OP4
AND
MGC668
16
15
22
20
19
18
26
27
21
11
10
Product specification
TDA1548T
FILTCR
VOR
MUTE
DEEM
ADVC
AD3S
ADBB
ADTR
AD ref
V
V DDD
1.8 nF
CEXT2
SSD