ltc5100 Linear Technology Corporation, ltc5100 Datasheet - Page 8

• Manufacturer Part Number: ltc5100
• Description: 3.3v, 3.2gbps Vcsel Driver
• Manufacturer: Linear Technology Corporation

LTC5100
V
100 W/DIV
8
TYPICAL PERFOR A CE CHARACTERISTICS
0.5mA/DIV
DD
= V
DD(HS)
EMCORE MODE LC-TOSA VCSEL
2
PWR, 2.4GHz 4TH ORDER BESSEL-THOMPSON
LOWPASS FILTER
Electrical Eye Diagram at 25 C
3.2Gbps, 2
49ps RISING
54ps FALLING
Im_rng = 0
PEAKING = 16
Optical Eye Diagram at 3.2Gbps
with 850nm VCSEL
15
PRBS, 7dB EXTINCTION RATIO, 300 W AVG
= 3.3V, T
23
2mA/DIV
PRBS, I
50ps/DIV
50ps/DIV
A
= 25 C, Cml_en = 0, Lpc_en = 1, transmitter enabled, unless otherwise noted. Test circuit shown in Figure 5.
Electrical Eye Diagram at –40 C,
3.2Gbps, 2
47ps RISING
56ps FALLING
Im_rng = 2
PEAKING = 16
MPP
W
= 3mA
23
U
5100 G01
5100 G04
PRBS, I
50ps/DIV
125 W/DIV
2mA/DIV
MPP
= 12mA
EMCORE MODE LC-TOSA VCSEL
2
PWR, 1.87GHz 4TH ORDER BESSEL-THOMPSON
LOWPASS FILTER
Electrical Eye Diagram at 25 C
3.2Gbps, 2
51ps RISING
59ps FALLING
Im_rng = 2
PEAKING = 16
Optical Eye Diagram at 2.5Gbps
with 850nm VCSEL
15
5100 G07
PRBS, 10dB EXTINCTION RATIO, 300 W AVG
23
PRBS, I
60ps/DIV
50ps/DIV
2mA/DIV
MPP
= 12mA
Electrical Eye Diagram at 85 C,
3.2Gbps, 2
57ps RISING
67ps FALLING
Im_rng = 2
PEAKING = 16
5100 G05
5100 G02
23
3mA/DIV
4mA/DIV
PRBS, I
50ps/DIV
2mA/DIV
Effect of Peaking Control on the
Electrical Eye Diagram
3.2Gbps, 2
PEAKING = 4, 8, 16, 30
50ps RISING
62ps FALLING
Im_rng = 3
PEAKING = 16
Electrical Eye Diagram at 25 C
3.2Gbps, 2
MPP
= 12mA
23
PRBS, Im_rng = 2, I
5100 G09
23
PRBS, I
50ps/DIV
50ps/DIV
MPP
MPP
sn5100 5100fs
= 24mA
= 12mA,
5100 G03
5100 G06