Rainbow Electronics MAX3795 - Manual (Page 6)

MAX3795
1Gbps to 4.25Gbps Multirate VCSEL Driver
with Diagnostic Monitors
6 _______________________________________________________________________________________
BIAS CURRENT vs. R BIASSET
MAX3795 toc10
R BIASSET ( Ω)
BIAS CURRENT (mA)
10
1
10
100
0.1
1 100
MODULATION CURRENT vs. R MODSET
MAX3740A toc11
R MODSET (k Ω)
MODULATION CURRENT (mA
P-P
)
10
10
100
1
100 1 0.1
MODULATION CURRENT TEMPCO
vs. R TC
MAX3795 toc17
R TC ( Ω)
TEMPCO (ppm/
°C)
100k 10k 1k
500
1500
2500
3500
4500
5500
-500
100 1M
REFERENCED TO +25 °C
MONITOR DIODE CURRENT
vs. R
PWRSET
MAX3795 toc12
R PWRSET ( Ω)
MONITOR DIODE CURRENT (A)
1
10 µ
100 µ
1m
10m
1 µ
0 10
SUPPLY CURRENT vs. TEMPERATURE
MAX3795 toc13
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
60 35 10 -15
20
30
40
50
60
70
80
90
100
-40 85
I MOD = 2mA
I MOD = 15mA
INPUT RETURN LOSS
MAX3795 toc14
FREQUENCY (Hz)
S
11
(dB)
1G
-30
-25
-20
-15
-10
-5
0
-35
100 10G
DIFFERENTIAL
MEASUREMENT
AT IN
±
OUTPUT RETURN LOSS
MAX3795 toc15
FREQUENCY (Hz)
S
22
(dB)
1G
-40
-35
-30
-25
-20
-15
-10
-5
0
-45
100 10G
SINGLE-ENDED
MEASUREMENT
MODULATION CURRENT
vs. TEMPERATURE
MAX3795 toc16
TEMPERATURE ( °C)
MODULATION CURRENT (mA
P-P
)
80 70 60 50 40 30 20 10
5
6
7
8
9
10
11
4
0 90
R
MODSET
= 1.8k Ω
R TC = 1k Ω
R
TC
= 500k Ω
R TC = 100k Ω
R TC = 60k Ω
R TC = 10k Ω
R TC = 5k Ω
R
TC
= 100 Ω
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, R
TC
= 0 Ω, PEAKSET open, measured electrically with a 50Ω load AC-coupled to OUT+, T
A
= +25 °C, unless otherwise
noted.)