MAX3946ETG+ Maxim Integrated Products, MAX3946ETG+ Datasheet - Page 7

• Manufacturer Part Number: MAX3946ETG+
• Description: IC LASER DVR SFP 11.3GBPS 24TQFN
• Manufacturer: Maxim Integrated Products
• Type: Laser Diode Driverr

Specifications of MAX3946ETG+

• Data Rate: 11.3Gbps
• Number Of Channels: 1
• Voltage - Supply: 2.85 V ~ 3.63 V
• Current - Supply: 68mA
• Current - Modulation: 80mA
• Current - Bias: 80mA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 12-WFQFN, Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(V
CC
-10
-15
-20
-25
-30
-35
-10
-15
-20
-25
-30
-35
-5
-5
= +3.3V, T
0
0
100
100
OUTPUT DIFFERENTIAL RETURN LOSS
INPUT DIFFERENTIAL RETURN LOSS
1.0625Gbps to 11.3Gbps, SFP+ Laser Driver
with Laser Impedance Mismatch Tolerance
A
1000
1000
vs. FREQUENCY
vs. FREQUENCY
= +25°C, data pattern = 2
FREQUENCY (MHz)
FREQUENCY (MHz)
_______________________________________________________________________________________
10.3Gbps OPTICAL EYE DIAGRAM
10,000
10,000
100,000
100,000
7
- 1 PRBS + 72 zeros + 2
MAX3946 toc01
-10
-15
-20
-25
-30
-35
-10
-15
-20
-25
-30
-35
-5
-5
0
0
1000
100
OUTPUT COMMON-MODE RETURN LOSS
INPUT COMMON-MODE RETURN LOSS
1000
vs. FREQUENCY
vs. FREQUENCY
FREQUENCY (MHz)
FREQUENCY (MHz)
10,000
7
Typical Operating Characteristics
- 1 PRBS (inverted) +72 ones, unless otherwise noted.)
10,000
10.3Gbps ELECTRICAL EYE DIAGRAM
2
50Ω LOAD
23
- 1 PRBS
100,000
100,000
20ps/div
-10
-20
-30
-40
-50
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
INPUT DIFFERENTIAL TO COMMON-MODE
100
0
11.3Gbps, 25Ω DIFFERENTIAL LOAD
1111 0000 PATTERN
RANDOM JITTER vs. MODULATION
10
RETURN LOSS vs. FREQUENCY
MAX3946 toc02
MODULATION CURRENT (mA
20
CURRENT (AT LOAD)
1000
FREQUENCY (MHz)
30
40
10,000
50
60
P-P
)
70
100,000
80
7