MAX3946ETG+T Maxim Integrated Products, MAX3946ETG+T Datasheet - Page 11

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

Specifications of MAX3946ETG+T

• 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

Figure 2. Functional Diagram
19, 24
20, 23
PIN
18
21
22
—
DISABLE
1.0625Gbps to 11.3Gbps, SFP+ Laser Driver
FAULT
BMAX
with Laser Impedance Mismatch Tolerance
CSEL
TIN+
TIN-
SDA
SCL
NAME
V
TIN+
75kI
50I
SCL
V
TIN-
EP
EET
CC
______________________________________________________________________________________
V
V
CM
CCD
V
75kI
Serial-Clock Input, CMOS. This pin has 75kI internal pulldown.
Ground
Power-Supply Connections. Provides supply voltage to the core circuitry.
Noninverted Data Input
Inverted Data Input
Exposed Pad. Ground. Must be soldered to circuit board ground for proper thermal and electrical
performance (see the Exposed-Pad Package and Thermal Considerations section).
CCD
50I
75kI
7.5kI
INTERFACE
EQ
3-WIRE
TX_EN
TX_POL
1
0
CONTROL
REGISTER
LOGIC
SET_TXEQ
SET_PWCTRL
9b DAC SET_IMOD
6b DAC SET_TXDE
9b DAC SET_IBIAS
OUTPUT CONTROL
CURRENT LIMITER
POWER-ON RESET
EYE SAFETY AND
LASER BIAS
CONTROL
PW
FUNCTION
I
MOD_DAC
+ I
Pin Description (continued)
DE_DAC
V
CC
MAX3946
25I
25I
I
I
100
BIAS
BIAS
TOUT+
V
TOUT-
BIAS
BMON
CCT
11