INTEGRATED CIRCUITS
DATA SHEET
TZA1029
Pre-amplifier for CD-RW systems
Product specification
Supersedes data of 2000 Oct 30
File under Integrated Circuits, IC01
2000 Oct 31
Philips Semiconductors
Product specification
Pre-amplifier for CD-RW systems
CONTENTS
1
2
3
4
5
6
7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
8
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.1.6
8.1.7
8.1.8
8.1.9
8.1.10
8.2
FEATURES
GENERAL DESCRIPTION
QUICK REFERENCE DATA
ORDERING INFORMATION
BLOCK DIAGRAM
PINNING
FUNCTIONAL DESCRIPTION
Data amplifier
Normalizer
Wobble pre-processor
Beta detector
Alpha detector
Fast track count
Spot position measurement
I
2
C-BUS PROTOCOL
Addressing and data bytes
Write mode
Read mode
Control byte subaddress 00
Control byte subaddress 01
Control byte subaddress 02
Control byte subaddress 03
Control byte subaddress 04
Control byte subaddress 05
Control byte subaddress 06
Control byte subaddress 07
Characteristics of the I
2
C-bus
9
10
11
11.1
11.2
11.3
12
13
14
14.1
14.2
14.3
14.4
14.5
15
16
17
LIMITING VALUES
TZA1029
THERMAL CHARACTERISTICS
CHARACTERISTICS
Transfer functions for normalized servo signals
Laser power control signals (alpha circuit)
Wobble pre-processor
APPLICATION AND TEST INFORMATION
PACKAGE OUTLINE
SOLDERING
Introduction to soldering surface mount
packages
Reflow soldering
Wave soldering
Manual soldering
Suitability of surface mount IC packages for
wave and reflow soldering methods
DEFINITIONS
LIFE SUPPORT APPLICATIONS
PURCHASE OF PHILIPS I
2
C COMPONENTS
2000 Oct 31
2
Philips Semiconductors
Product specification
Pre-amplifier for CD-RW systems
1
FEATURES
TZA1029
•
Data amplifier for read speed up to twelve times nominal
data speed
•
Normalized and filtered error signals for servo control
•
Wobble pre-processor with switchable low-pass filter
•
Calculation of signals for real-time laser power control
for write speed up to eight times
•
Calculation of signals for optimum laser calibration for
write speed up to eight times
•
Fast track count amplifier
•
Spot position measurement for alignment of photo
diodes
•
Reference voltage for laser controller
•
On-chip band gap and DACs for accurate and
adjustable current/gain settings
•
I
2
C-bus microcontroller interface for programmable
gain, speed switching and function selection
•
All functions available for CD-R and CD-RW systems.
2
GENERAL DESCRIPTION
TZA1029 (Aeger 3) is an analog pre-processor IC for
CD-R and CD-RW systems with 3-spots push-pull tracking
system. The IC interfaces directly to the photo diodes. The
device generates signals for laser power calibration and
laser power control during disc writing. Normalized error
signals are generated for servo control and wobble
detection. An HF current amplifier is implemented to detect
the actual HF data signal. The Fast Track Count (FTC)
amplifier generates a radial error signal to allow fast track
counting. The device is identical to the TZA1020 (Aeger 2)
except for non-clamped MIRN for compatibility with Iguana
and the by-pass of the high-speed part of the laser power
control.
3
QUICK REFERENCE DATA
SYMBOL
PARAMETER
positive supply voltage
negative supply voltage
central diode input current range
−3
dB bandwidth normalized
error signals (servo)
−3
dB bandwidth pin CAHF
group delay variations pin CAHF
current gain pin CAHF
reference current
ambient temperature
C
i
= 12 pF
f = 0.1 to 12 MHz;
C
i
= 12 pF
cdrwsel = 1
cdrwsel = 0
CONDITIONS
MIN.
4.5
−5.5
0
48
17
−
−
−
−
0
TYP.
5.0
−5.0
−
60
−
−
35
8.25
−900
−
MAX.
5.5
−4.5
4000
−
−
0.9
−
−
−
70
µA
°C
UNIT
V
V
µA
kHz
MHz
ns
V
DD
V
SS
I
i(cd)
B
−3dB(norm)
B
−3dB(CAHF)
∆t
d(g)(CAHF)
G
I(CAHF)
I
RREF
T
amb
4
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
QFP44
DESCRIPTION
plastic quad flat package; 44 leads (lead length 1.3 mm);
body 10
×
10
×
1.75 mm
VERSION
SOT307-2
TZA1029H
2000 Oct 31
3
Philips Semiconductors
Product specification
Pre-amplifier for CD-RW systems
5
BLOCK DIAGRAM
TZA1029
handbook, full pagewidth
ERON
15
35
FEN
REN
TLN
XDN
MIRN
CAGAIN
11
INPUT
STAGE 3
LPF 1
DIODE
INPUT
STAGE 1
LPF 2
WOBBLE
PREPROCESSOR
NORMALIZER
36
37
34
38
SA1
SA2
SB1
SB2
C1
C2
C3
C4
AMON
4
8
5
9
10
3
6
7
14
DIODE
INPUT
STAGE 2
27
26
20
22
21
CWBL
PPN
CAWR
AINT
ALS
ASTROBE
DALPHA
AZIN
ALPHA
DETECTOR
19
24
25
TZA1029
control
switches
control
currents
CURRENT
AMPLIFIER
23
CAHF
REGISTER
12
I
2
C-BUS
13
INTERFACE
DACs
UOUT
1
DRIVER
POR
BETA
DETECTOR
44
43
CALF
A1
A2
CALPF
HCA1
HCA2
SDA
SCL
42
39
40
41
32
2
BAND GAP
REFERENCE
MEAS
33
MEAS1
MEAS2
RREF
FAST
TRACK
COUNT
28
16
30
18
29
17
31
RE
MGU210
VDD1 VDD2 VSS1 VSS2 GND1 GND2
Fig.1 Block diagram.
2000 Oct 31
4
Philips Semiconductors
Product specification
Pre-amplifier for CD-RW systems
6
PINNING
SYMBOL
UOUT
RREF
C2
SA1
SB1
C3
C4
SA2
SB2
C1
CAGAIN
SDA
SCL
AMON
ERON
V
DD2
GND2
V
SS2
ASTROBE
CAWR
ALS
AINT
CAHF
DALPHA
AZIN
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
DESCRIPTION
reference voltage output
reference current input
central photo diode current input
satellite photo diode current input
satellite photo diode current input
central photo diode current input
central photo diode current input
satellite photo diode current input
satellite photo diode current input
central photo diode current input
set-point laser power on disc,
current input
I
2
C-bus
data input/output
FEN
REN
TLN
MIRN
CALPF
HCA1
HCA2
A2
A1
CALF
35
36
37
38
39
40
41
42
43
44
I
2
C-bus clock input
alpha measurement on switch
(write/read state)
normalized error signals on switch
positive supply voltage 2
ground 2
negative supply voltage 2
control signal sample-and-hold in
alpha measurement
high speed central aperture
output signal during write
DALPHA output enabled/disabled
ALPHA input signal from ALPHA
discrete
central aperture high-frequency
current output
alpha error signal for laser power
control
set-point alpha control
V
DD1
GND1
V
SS1
RE
MEAS1
MEAS2
XDN
28
29
30
31
32
33
34
CWBL
27
TZA1029
SYMBOL
PPN
PIN
26
DESCRIPTION
normalized, balanced push-pull
signal voltage
capacitor for EFM noise reduction
loop
positive supply voltage 1
ground 1
negative supply voltage 1
fast track count signal voltage
output
combination of photo diode
currents for adjustment 1
combination of photo diode
currents for adjustment 2
normalized spot position error
current output
normalized focus error current
output
normalized radial error current
output
normalized track-loss current
output
mirror output (disc reflection)
current output
capacitor to define CALF
bandwidth
capacitor to define time constant
peak detector A1
capacitor to define time constant
peak detector A2
pit amplitude relative to CALF,
voltage output
land amplitude relative to CALF,
voltage output
low-pass filtered aperture signal,
voltage output
2000 Oct 31
5
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