Datasheet
VCSEL Driver IC
25/28 Gbit/s
Product Code:
Product C
A25-120C80
Sample image only. Actual product may vary.
Preliminary
Product Description
The A25-120C80 is a high speed VCSEL driver IC designed for directly modulated VCSEL
in fiber optic transmission systems. The A25-120C80 operates from a single 3.3V supply
voltage typically dissipating less than 120mW of DC power. The device is available as
engineering sample.
Features
Applications
· up to 28 Gbit/s Laser Diode Driver for VCSELs
· differential input 100 Ω / single ended output
· low power consumption of 120mW
· small footprint 0.6 mm x 1.0 mm
· supply voltage 3.3V
· 25G Ethernet
· Fibre Channel FC32G
· Fiber optics systems tests
· Research and development
Parameter
Data rate
Typical
Up to 28 Gbit/s
Supply Voltage (VDD)
Power dissipation
3.3 V
120 mW
Differential Input Resistance
100 Ω
–25°C to +125°C
Ambient Operating Temperature
Notes
Controlled A
All product specifications and descriptions are subject to change without notice.
www.v-i-systems.com
No. 100411-Rev 1.9
VI Systems GmbH Hardenbergstrasse 7 D-10623 Berlin
February 2016
Datasheet
VCSEL Driver IC
A25-120C80
Preliminary
Absolute Maximum Ratings
Parameter
Power Supply Voltage
Vxing, Vmod, Vbias
Diff. Input
Operating Temperature
Symbol
Vcc
Vbias Vxing
Vmod
Vin+ VinTOP
Condition
w/ respect
to GND
w/ respect
to GND
Vin+ to Vin-
Min
Typ
Max
Unit
0
4
V
0
5
V
1.0
+125
V
°C
-1.0
-25
Electrical perfomance
Parameter
Power Supply Voltage
Bias current control, supply
voltage for output stage
Reference Voltage
Modulation current control
Symbol
Vcc
Condition
Min
3.2
Typ
3.3
Max
3.4
Unit
V
Vxing
1.0
2.2
3.3
V
Vmod
Vbias
1.0
1.0
2.2
1.0
3.3
3.3
V
V
Input Parameters
Parameter
Input Common Level
Input Amplitude
Reference Impedance
Input Return Loss
Symbol
VIN CM
VIN DIFF
Z0 DIFF
|S11|
Condition
Differential
Differential
Differential
Min
1.45
0.4
Typ
1.6
Max
1.75
0.8
100
10
Unit
V
Vpp
Ω
dB
Output Parameters
Parameter
Maximum Data rate
Rise / Fall Time
Max. Deterministic Jitter
Output Current Swing
Bias Current
Output Complence
www.v-i-systems.com
No. 100411-Rev 1.9
Symbol
tR / tF
JD
IMOD
IBIAS
VOUT
Condition
At ER >0 4dB
(20-80%)
Min
10
2
2
1.8
Typ
28
11
4
4
Max
13
3
6
6
2.8
Unit
Gbit/s
ps
Ps
mA
mA
V
VI Systems GmbH Hardenbergstrasse 7 D-10623 Berlin
February 2016
Datasheet
VCSEL Driver IC
A25-120C80
Preliminary
Pad Layout
Name
Pin
Symbol
Description
Function
In+
In VCSEL Anode
VCC1
VCC2
VCC3
Vxing
Vmod
Vbias
VCC_Thru
VCSEL cathode
GND
2
3
13
6
8
16
6
8
10
11
12,14
1,3,5,7,9,15,17,19
Vin +
Vin out
DC1
DC2
DC3
DC4
DC5
DC6
Thru
RF GND
GND
HF input (positive)
HF input (negative)
HF output
Supply voltage for bias ciruitry
Supply voltage for gain stage
Supply voltage for output stage
Zero crossing control voltage
Modulation current (IMOD) control
Bias current (BIAS) control
NC
Internally connected GND
Ground (0 V)
Input
Input
Output
Supply
Supply
Supply
Input
Input
Input
No use
Ground
Ground
www.v-i-systems.com
No. 100411-Rev 1.9
VI Systems GmbH Hardenbergstrasse 7 D-10623 Berlin
February 2016
Datasheet
VCSEL Driver IC
A25-120C80
Limited Qualification Notification
The A25-120C80 has been tested to meet specifications outlined in this data sheet at room
temperature. However, it has not undergone full qualification testing or characterization and
therefore may not meet the performance specifications over all extremes.
VI Systems GmbH
Hardenbergstrasse 7
10623 Berlin
Tel.: +49 30 3083143 30
Fax: +49 30 3083143 59
sales@v-i-systems.com
www.v-i-systems.com
www.facebook.com/VISystems
All product specifications and descriptions are subject to change without notice.
Please contact our sales department for additional information and to receive a quotation: sales@v-i-systems.com
www.v-i-systems.com
No. 100411-Rev 1.9
VI Systems GmbH Hardenbergstrasse 7 D-10623 Berlin
February 2016