TZA3011AVHW-S NXP Semiconductors, TZA3011AVHW-S Datasheet - Page 17

• Manufacturer Part Number: TZA3011AVHW-S
• Manufacturer: NXP Semiconductors

Specifications of TZA3011AVHW-S

• Number Of Channels: 1
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
12. Application information
9397 750 14437
Product data sheet
Fig 4. Bias current as a function of BIASIN voltage
I
(mA)
BIAS
110
0.2
0
I
12.1.1 Bias and modulation currents
BIAS(min)
12.1 Design equations
0.5
The bias and modulation currents are determined by the voltages on pins BIASIN and
MODIN. These voltages are applied by pins BIASOUT and MODOUT for dual-loop
control. For average loop control the BIASIN voltage is applied by pin BIASOUT and the
MODIN voltage is applied by an external voltage source or an external resistor R
For direct setting of bias and the modulation current, the BIASIN and MODIN voltages
have to be applied by external voltage sources or by R
connected on pins BIASIN and MODIN:
I
I
The bias and modulation current sources operate with an input voltage range from 0.5 V
to 1.5 V. The output current is at its minimum level for an input voltage below 0.4 V;
see
The bias and modulation current sources are temperature compensated and the adjusted
current level remains stable over the temperature range.
The bias and modulation currents increase with increasing resistor values for R
R
BIAS
mod
MODIN
110 mA/V
g
m(bias)
Figure 4
= (R
= (R
=
respectively, this allows resistor tuning to start at a minimum current level.
V
MODIN
BIASIN
BIASIN
and
(V)
100 A
100 A
Figure
1.5
Rev. 06 — 20 January 2005
mgt890
5.
0.5 V)
0.5 V)
Fig 5. Modulation current as a function of MODIN
g
g
m(mod)
m(bias)
I
mod
30 Mbit/s up to 3.2 Gbit/s A-rate
(mA)
= I
LA current when LA output is on.
V
voltage
TZA3011A; TZA3011B
o(LA)
+ 5 [mA]
o(LA)
[mA]
105
5
0
= V
I
CCO
o(LA)(min)
.
BIASIN
0.5
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
and R
100 mA/V
g
m(mod)
MODIN
=
V
MODIN
external resistors
(V)
laser drivers
BIASIN
1.5
MODIN
mgt891
17 of 30
and
.