INTEGRATED CIRCUITS
DATA SHEET
TZA3001AHL; TZA3001BHL;
TZA3001U
SDH/SONET STM4/OC12 laser
drivers
Preliminary specification
Supersedes data of 1997 Sep 08
File under Integrated Circuits, IC19
1999 Aug 24
Philips Semiconductors
Preliminary specification
SDH/SONET STM4/OC12 laser drivers
FEATURES
•
622 Mbits/s data input, both Current-Mode Logic (CML)
and Positive Emitter Coupled Logic (PECL) compatible;
maximum 800 mV (p-p)
•
Adaptive laser output control with dual loop, stabilizing
optical ONE and ZERO levels
•
Optional external control of laser modulation and biasing
currents (non-adaptive)
•
Automatic laser shutdown
•
Few external components required
•
Rise and fall times of 120 ps (typical value)
•
Jitter <50 mUI (p-p)
•
RF output current sinking capability of 60 mA
•
Bias current sinking capability of 90 mA
•
Power dissipation of 430 mW (typical value)
•
Low cost LQFP32 plastic package
•
Single 5 V power supply.
TZA3001AHL
•
Laser alarm output for signalling extremely low and high
bias current conditions.
TZA3001BHL
•
Extra STM4 622 Mbits/s loop mode input; both CML and
PECL compatible.
TZA3001U
•
Bare die version with combined bias alarm and loop
mode functionality.
ORDERING INFORMATION
TYPE
NUMBER
TZA3001AHL
TZA3001BHL
TZA3001U
−
bare die; 2000
×
2000
×
380
µm
TZA3001AHL; TZA3001BHL;
TZA3001U
APPLICATIONS
•
SDH/SONET STM4/OC12 optical transmission systems
•
SDH/SONET STM4/OC12 optical laser modules.
GENERAL DESCRIPTION
The TZA3001AHL, TZA3001BHL and TZA3001U are fully
integrated laser drivers for STM4/OC12 (622 Mbits/s)
systems, incorporating the RF path between the data
multiplexer and the laser diode. Since the dual loop bias
and modulation control circuits are integrated on the IC,
the external component count is low. Only decoupling
capacitors and adjustment resistors are required.
The TZA3001AHL features an alarm function for signalling
extreme bias current conditions. The alarm low and high
threshold levels can be adjusted to suit the application
using only a resistor or a current Digital-to-Analog
Converter (DAC).
The TZA3001BHL is provided with an additional RF data
input to facilitate remote (loop mode) system testing.
The TZA3001U is a bare die version for use in compact
laser module designs. The die contains 40 pads and
features the combined functionality of the TZA3001AHL
and the TZA3001BHL.
PACKAGE
NAME
LQFP32
DESCRIPTION
plastic low profile quad flat package; 32 leads; body 5
×
5
×
1.4 mm
VERSION
SOT401-1
−
1999 Aug 24
2
Philips Semiconductors
Preliminary specification
SDH/SONET STM4/OC12 laser drivers
BLOCK DIAGRAM
TZA3001AHL; TZA3001BHL;
TZA3001U
handbook, full pagewidth
ALARM TONE TZERO ALARMLO ALARMHI
26
4
5
21
LASER
CONTROL
BLOCK
data input
(differential)
18
2
22
23
13
MONIN
ONE
ZERO
LA
LAQ
BIAS
DIN
DINQ
28
29
CURRENT
SWITCH
12
15
TZA3001AHL
19, 20
27, 30
4
VCC(R) VCC(G) VCC(B)
ALS
BAND GAP
REFERENCE
6
BGAP
7
10
31
1, 3, 8, 9,
11, 14, 16, 17
24, 25, 32
11
GND
MGK271
Fig.1 Block diagram of TZA3001AHL.
handbook, full pagewidth
ENL
26
TONE
4
TZERO
5
LASER
CONTROL
BLOCK
2
22
23
13
MONIN
ONE
ZERO
LA
LAQ
BIAS
DIN
DINQ
DLOOP
DLOOPQ
28
29
19
20
BAND GAP
REFERENCE
6
MUX
CURRENT
SWITCH
12
15
BGAP
TZA3001BHL
18, 21
27, 30
4
VCC(R) VCC(G) VCC(B)
ALS
7
10
31
1, 3, 8, 9,
11, 14, 16, 17
24, 25, 32
11
GND
MGK270
Fig.2 Block diagram of TZA3001BHL.
1999 Aug 24
3
Philips Semiconductors
Preliminary specification
SDH/SONET STM4/OC12 laser drivers
PINNING
PIN
SYMBOL
TZA3001AHL TZA3001BHL
GND
MONIN
GND
IGM
TONE
TZERO
BGAP
V
CC(G)
V
CC(G)
GND
GND
V
CC(B)
V
CC(B)
GND
LAQ
LA
GND
BIAS
GND
GND
GND
ALARMHI
V
CC(R)
V
CC(R)
DLOOP
V
CC(R)
DLOOPQ
V
CC(R)
ALARMLO
V
CC(R)
ONE
ZERO
GND
GND
ALARM
ENL
V
CC(R)
1999 Aug 24
1
2
3
−
4
5
6
7
−
8
9
10
−
11
12
13
14
15
16
17
−
18
−
19
−
20
−
−
21
−
22
23
24
25
26
−
27
1
2
3
−
4
5
6
7
−
8
9
10
−
11
12
13
14
15
16
17
−
−
18
−
19
−
20
−
−
21
22
23
24
25
−
26
27
TZA3001U
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
−
24
−
25
26
27
−
28
29
30
31
32
33
34
4
ground
PAD
TZA3001AHL; TZA3001BHL;
TZA3001U
DESCRIPTION
monitor photodiode current input
ground
not used; leave unbonded
connection for external capacitor used to set optical
ONE control loop time constant (optional)
connection for external capacitor used to set optical
ZERO control loop time constant (optional)
connection for external band gap decoupling capacitor
supply voltage (green domain)
supply voltage (green domain)
ground
ground
supply voltage (blue domain)
supply voltage (blue domain)
ground
laser modulation output inverted
laser modulation output
ground
laser bias current output
ground
ground
ground
maximum bias current alarm reference level input
supply voltage (red domain)
supply voltage (red domain)
loop mode data input
supply voltage (red domain)
loop mode data input inverted
supply voltage (red domain)
minimum bias current alarm reference level input
supply voltage (red domain)
optical ONE reference level input
optical ZERO reference level input
ground
ground
alarm output
loop mode enable input
supply voltage (red domain)
Philips Semiconductors
Preliminary specification
SDH/SONET STM4/OC12 laser drivers
TZA3001AHL; TZA3001BHL;
TZA3001U
PIN
SYMBOL
TZA3001AHL TZA3001BHL
DIN
DINQ
V
CC(R)
ALS
GND
GND
28
29
30
31
32
−
28
29
30
31
32
−
PAD
DESCRIPTION
TZA3001U
35
36
37
38
39
40
data input
data input inverted
supply voltage (red domain)
automatic laser shutdown input
ground
ground
27 VCC(R)
30 VCC(R)
29 DINQ
handbook, full pagewidth
26 ALARM
25 GND
32 GND
31 ALS
28 DIN
GND
MONIN
GND
TONE
TZERO
BGAP
VCC(G)
GND
1
2
3
4
24 GND
23 ZERO
22 ONE
21 ALARMLO
TZA3001AHL
5
6
7
8
20 VCC(R)
19 VCC(R)
18 ALARMHI
17 GND
VCC(B) 10
GND 11
LAQ 12
LA 13
GND 14
BIAS 15
GND 16
GND
9
MGK273
Fig.3 Pin configuration of TZA3001AHL.
1999 Aug 24
5
