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PDF TZA1020 Data sheet ( Hoja de datos )
| Número de pieza | TZA1020 | |
| Descripción | Pre-amplifiers for CD-RW systems | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
TZA1020; TZA1020A
Pre-amplifiers for CD-RW systems
Product specification
File under Integrated Circuits, IC01
2000 Oct 30
1 page  
Philips Semiconductors
Pre-amplifiers for CD-RW systems
Product specification
TZA1020; TZA1020A
6 PINNING
SYMBOL
UOUT
RREF
C2
SA1
SB1
C3
C4
SA2
SB2
C1
CAGAIN
SDA
SCL
AMON
ERON
VDD2
GND2
VSS2
ASTROBE
AINTON
ALS
AINT
CAHF
DALPHA
AZIN
PIN DESCRIPTION
1 reference voltage output
2 reference current input
3 central photo diode current input
4 satellite photo diode current input
5 satellite photo diode current input
6 central photo diode current input
7 central photo diode current input
8 satellite photo diode current input
9 satellite photo diode current input
10 central photo diode current input
11 set-point laser power on disc,
current input
12 I2C-bus data input/output
13 I2C-bus clock input
14 alpha measurement on switch
(write/read state)
15 normalized error signals on switch
16 positive supply voltage 2
17 ground 2
18 negative supply voltage 2
19 control signal sample-and-hold in
alpha measurement
20 control signal integrator in alpha
measurement
21 DALPHA output enabled/disabled
22 integrator capacitor for alpha
measurement
23 central aperture high-frequency
current output
24 alpha error signal for laser power
control
25 set-point alpha control
SYMBOL
PPN
CWBL
VDD1
GND1
VSS1
RE
MEAS1
MEAS2
XDN
FEN
REN
TLN
MIRN
CALPF
HCA1
HCA2
A2
A1
CALF
PIN DESCRIPTION
26 normalized, balanced push-pull
signal voltage
27 capacitor for EFM noise reduction
loop
28 positive supply voltage 1
29 ground 1
30 negative supply voltage 1
31 fast track count signal voltage
output
32 combination of photo diode
currents for adjustment 1
33 combination of photo diode
currents for adjustment 2
34 normalized spot position error
current output
35 normalized focus error current
output
36 normalized radial error current
output
37 normalized track-loss current
output
38 mirror output (disc reflection)
current output
39 capacitor to define CALF
bandwidth
40 capacitor to define time constant
peak detector A1
41 capacitor to define time constant
peak detector A2
42 pit amplitude relative to CALF,
voltage output
43 land amplitude relative to CALF,
voltage output
44 low-pass filtered aperture signal,
voltage output
2000 Oct 30
5
5 Page 
Philips Semiconductors
Pre-amplifiers for CD-RW systems
Product specification
TZA1020; TZA1020A
Table 11 Control bits for current negain-DAC; note 1
negain4
0
0
0
1
1
1
negain3
0
0
0
1
1
1
negain2
0
0
0
:
code
1
1
1
negain1
0
0
1
0
1
1
negain0
0
1
0
1
0
1
CURRENT negain-DAC
3.125 µA
6.250 µA
9.375 µA
:
100 µA (code + 1)/32
93.750 µA
96.900 µA
100 µA
Note
1. The currents of all DACs is controlled by reference current (IRREF). The given currents are valid at IRREF = −900 µA.
8.1.6 CONTROL BYTE SUBADDRESS 03
Table 12 Control bit for tmdac
tmdac
0
1
DESCRIPTION
DAC test off
DAC test on
Table 13 Control bits for tlnlimit
tlnlim1
0
X
1
tlnlim0
0
1
0
DESCRIPTION
clamp off
clamp on 1 (0.6 V; Tamb = 25°C)
clamp on 2 (1.2 V; Tamb = 25°C)
Table 14 Control bits for current sumref-DAC; note 1
sumref4
0
0
0
1
1
1
sumref3
0
0
0
1
1
1
sumref2
0
0
0
:
code
1
1
1
sumref1
0
0
1
0
1
1
sumref0
0
1
0
1
0
1
CURRENT sumref-DAC
0.468 µA
0.937 µA
1.40 µA
:
15 µA (code + 1)/32
14.06 µA
14.53 µA
15.00 µA
Note
1. The currents of all DACs is controlled by reference current (IRREF). The given currents are valid at IRREF = −900 µA.
2000 Oct 30
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TZA1020.PDF ] | |
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