TZA3047B Ver la hoja de datos (PDF) - Philips Electronics
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Lista de partido
TZA3047B Datasheet PDF : 28 Pages
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Philips Semiconductors
30 Mbits/s up to 1.25 Gbits/s laser drivers
Product specification
TZA3047A; TZA3047B
12.4 TZA3047B with average loop control
A simplified application using the TZA3047B with average loop control and a DC-coupled laser at 3.3 or 5 V laser voltage
is illustrated in Fig.9. The ER pin is short-circuited to ground for the average loop control. The average power level is
determined by the resistor RAVR. The average loop controls the bias current and the BIASOUT output is connected to
the BIASIN input. The modulation current is determined by the MODIN input voltage which is generated by the resistor
RMODIN and the 100 µA source current of the MODIN pin.
handbook, full pagewidth
3.3 V or 5 V
VCCA
3.3 V
1 32 31 30 29 28 27 26 25
3.3 V VCCD 2
DIN
3
DINQ
4
TEST
5
CIN
6
CINQ
7
GND
8
TZA3047B
BIAS
24
GND
23
LA
22
LA
21
LAQ
20
LAQ
19
GND
18
ALRESET
9 10 11 12 13 14 15 16 17
laser with
monitor diode
MDB315
Fig.9 TZA3047B with DC-coupled laser and average loop control.
2003 Jun 05
20
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