TZA3001BHL Philips Semiconductors, TZA3001BHL Datasheet - Page 15

• Manufacturer Part Number: TZA3001BHL
• Description: SDH/SONET STM4/OC12 laser drivers
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1999 Aug 24
handbook, full pagewidth
SDH/SONET STM4/OC12 laser drivers
(1) C7 is required to meet the minimum capacitance value on pin MONIN (optional, see Section “Automatic laser control”).
(2) C8 enhances modulation control loop time constant (optional).
(3) C9 enhances bias control loop time constant (optional).
(4) R1 and R2 are used for optical ZERO and ONE reference currents setting (see Section “Automatic laser control”).
(5) Z1 is required for balancing the output stage (see Section “Power supply connections”).
V CC
Fig.7 Application diagram showing the TZA3001BHL configured for 622 Mbits/s (STM4/OC12).
C7
(1)
C1
1 F
C3
1 F
C5
1 F
C8
C9
C10
L1
L2
L3
(2)
(3)
22 nF
TZERO
MONIN
TONE
BGAP
C2
22 nF
C4
22 nF
C6
22 nF
2
4
5
6
7
V CC(G)
1, 3, 8, 9, 11,
14, 16, 17,
24, 25, 32
11
10
V CC(B)
GND
18, 21,
27, 30
4
TZA3001BHL
MPD
V CC(R)
15
BIAS
L1
R3
18
31
(CML/PECL compatible)
ALS
15
13
LA
normal mode
data inputs
29
DINQ
12
28
LAQ
Z1
DIN
(5)
laser
TZA3001AHL; TZA3001BHL;
23
22
20
19
26
ENL
ZERO
ONE
DLOOPQ
DLOOP
C11
R1
(4)
loop mode inputs
(CML/PECL
compatible)
R2
Preliminary specification
(4)
TZA3001U
MGK275