tza1020 NXP Semiconductors, tza1020 Datasheet - Page 23

• Manufacturer Part Number: tza1020
• Description: Pre-amplifiers For Cd-rw Systems
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2000 Oct 30
Laser power calibration signals (beta circuit); see Fig.5 and Table 30
I
V
V
V
B
tc
R
V
Laser power calibration signals (alpha circuit); see note 9 and Tables 31 and 32
G
G
G
G
G
V
B
I
I
tc
p1
peak
L(peak)
I
V
ref(beta)
A1
A1
o
AINT
lpf
o
Pre-amplifiers for CD-RW systems
peak
AIN SETTINGS
alpha(CD-RW)
CD-R(i)
CD-R(norm)
sub
peak
c1
3dB
AINT-ASTROBE
SYMBOL
= I
/V
/V
= 100 A; I
p2
A2
CALF
= 10
TO
betascale
90 A; 2.1
reference voltage for beta
detector
ratio between A1 and A2
ratio between CALF and
A1
bandwidth ( 3 dB) of CALF
and CALFI signal
time constant peak
detector
output resistance pins A1,
A2 and CALF
output voltage pins A1, A2
and CALF
gain in alpha CD-RW
circuit
gain in CD-R input circuit
gain in CD-R normalizer
subtractor gain
change in voltage
measured behind
ASTROBE switch
voltage range pin AINT
bandwidth of low-pass filter ERON = 1
current to peak detector
leakage current of peak
detector
time constant peak
detector time discrete to
time continues
= I
PARAMETER
p1
I
p1
; I
betascl
= I
p1
AMON = 0
AMON = 1
C
C
betactrl = 00
betactrl = 01
betactrl = 10
betactrl = 11
V
ERON = 1
ERON = 0
AINTON = 1
ASTROBE = 1
ALS = 1
ALS = 0
ASTROBE 1
algctr6 = 1; algctr4 = 0
switching AINTON at
realistic data speed = N
DD1
CALPF
HCA1
betactrl = 00
betactrl = 01
betactrl = 10
betactrl = 11
CONDITIONS
= 5.0 V
= C
= 15 nF
HCA2
23
= 10 nF
0
1.1
0.9
0.8
0.88
0.53
38126
0.94
0.5
48
0.3
0
MIN.
TZA1020; TZA1020A
1.25
0
1
1
500
1000
2000
4000
500
250
125
60
250
1
0
0.62
48158
0.97
0
130
60
100
5/N
TYP.
1.4
1.1
1.2
4.5
1.12
0.72
6190
1.0
3
72
2
Product specification
MAX.
V
V
Hz
Hz
Hz
Hz
V
mV
V
kHz
mA
s
s
s
s
A/V
A/ s
s
UNIT