TZA3001BHL_C1 Ver la hoja de datos (PDF) - Philips Electronics
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TZA3001BHL_C1 Datasheet PDF : 32 Pages
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Philips Semiconductors
SDH/SONET STM4/OC12 laser drivers
Product specification
TZA3001AHL; TZA3001BHL;
TZA3001U
handbook, full pagewidth
GND 1
MONIN 2
GND 3
TONE 4
TZERO 5
BGAP 6
VCC(G) 7
GND 8
TZA3001BHL
24 GND
23 ZERO
22 ONE
21 VCC(R)
20 DLOOPQ
19 DLOOP
18 VCC(R)
17 GND
MGK272
Fig.4 Pin configuration of TZA3001BHL.
FUNCTIONAL DESCRIPTION
The TZA3001AHL, TZA3001BHL and TZA3001U laser
drivers accept a 622 Mbits/s STM4 Non-Return to Zero
(NRZ) input data stream, and generate an output signal
with sufficient current to drive a solid state Fabry Perot
(FP) or Distributed FeedBack (DFB) laser. They also
contain dual loop control circuitry for stabilizing the true
laser optical power levels representing logic 1 and logic 0.
The input buffers present a high impedance to the data
stream on the differential inputs (pins DIN and DINQ);
see Fig.5. The input signal can be at a CML level of
approximately 200 mV (p-p) below the supply voltage, or
at a PECL level up to 800 mV (p-p). The inputs can be
configured to accept CML signals by connecting pins DIN
and DINQ to VCC(R) via external 50 Ω pull-up resistors.
If PECL compatibility is required, the usual Thevenin
termination can be applied.
handbook, full pagewidth
10 kΩ
DIN, DLOOP
100 Ω
VCC(R)
10 kΩ
100 Ω
DINQ, DLOOPQ
2002 Aug 13
GND MGS910
Fig.5 DIN/DINQ and DLOOP/DLOOPQ inputs.
6
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