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参数资料
| 型号： | TZA1020A |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | Pre-amplifiers for CD-RW systems |
| 中文描述： | 前级放大器的CD - RW系统 |
| 文件页数： | 16/36页 |
| 文件大小： | 153K |
| 代理商： | TZA1020A |
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2000 Oct 30
23
Philips Semiconductors
Product specication
Pre-ampliers for CD-RW systems
TZA1020; TZA1020A
Laser power calibration signals (beta circuit); see Fig.5 and Table 30
Ip1 =Ip2 =10 TO 90 A; 2.1 × Ip1;Ibetascl =Ip1
Vref(beta)
reference voltage for beta
detector
AMON = 0
1.1
1.25
1.4
V
AMON = 1
0
V
VA1/VA2
ratio between A1 and A2
0.9
1
1.1
VA1/VCALF
ratio between CALF and
A1
0.8
1
1.2
ΣIc1 = 100 A; Ibetascale =Ip1
B3dB
bandwidth (
3 dB) of CALF
and CALFI signal
CCALPF =15nF
betactrl = 00
500
Hz
betactrl = 01
1000
Hz
betactrl = 10
2000
Hz
betactrl = 11
4000
Hz
tcpeak
time constant peak
detector
CHCA1 =CHCA2 =10nF
betactrl = 00
500
s
betactrl = 01
250
s
betactrl = 10
125
s
betactrl = 11
60
s
Ro
output resistance pins A1,
A2 and CALF
250
Vo
output voltage pins A1, A2
and CALF
VDD1 = 5.0 V
0
4.5
V
Laser power calibration signals (alpha circuit); see note 9 and Tables 31 and 32
GAIN SETTINGS
Galpha(CD-RW)
gain in alpha CD-RW
circuit
ERON = 1
0.88
1
1.12
ERON = 0
0
GCD-R(i)
gain in CD-R input circuit
AINTON = 1
0.53
0.62
0.72
GCD-R(norm)
gain in CD-R normalizer
ASTROBE = 1
38126
48158
6190
A/V
Gsub
subtractor gain
ALS = 1
0.94
0.97
1.0
ALS=0
0
V
AINT-ASTROBE
change in voltage
measured behind
ASTROBE switch
ASTROBE 1
→ 0
130
mV
VAINT
voltage range pin AINT
0.5
3V
Blpf
bandwidth of low-pass lter ERON = 1
48
60
72
kHz
Ipeak
current to peak detector
0.3
2mA
IL(peak)
leakage current of peak
detector
algctr6 = 1; algctr4 = 0
100
A/s
tcpeak
time constant peak
detector time discrete to
time continues
switching AINTON at
realistic data speed = N
5/N
s
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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