MAX3737ETJ+T Maxim Integrated Products, MAX3737ETJ+T Datasheet - Page 7

• Manufacturer Part Number: MAX3737ETJ+T
• Description: IC LSR DRVR 2.7GBPS 3.63V 32TQFN
• Manufacturer: Maxim Integrated Products
• Type: Laser Diode Driver (Fiber Optic)r

Specifications of MAX3737ETJ+T

• Data Rate: 2.7Gbps
• Number Of Channels: 1
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 47mA
• Current - Modulation: 85mA
• Current - Bias: 100mA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-WFQFN Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3, 6, 11, 18, 23
1, 10, 15, 16
19, 20
21, 22
PIN
12
13
14
17
24
25
26
27
28
29
30
31
32
EP
2
4
5
7
8
9
MODBCOMP
Exposed Pad
MODTCOMP
TX_DISABLE
SHUTDOWN
TX_FAULT
APCFILT1
APCFILT2
MC_MON
TH_TEMP
PC_MON
BC_MON
MODSET
APCSET
_______________________________________________________________________________________
NAME
OUT+
OUT-
GND
BIAS
VMD
V
VBS
IN+
MD
IN-
CC
Multirate Laser Driver with Extinction
Ground
Transmitter Disable, TTL. Laser output is disabled when TX_DISABLE is asserted high or left
unconnected. The laser output is enabled when this pin is asserted low.
+3.3V Supply Voltage
Noninverted Data Input
Inverted Data Input
Photodiode-Current Monitor Output. Current out of this pin develops a ground-referenced voltage
across an external resistor that is proportional to the monitor-diode current.
Bias-Current Monitor Output. Current out of this pin develops a ground-referenced voltage across
an external resistor that is proportional to the bias current.
Modulation-Current Monitor Output. Current out of this pin develops a ground-referenced voltage
across an external resistor that is proportional to the modulation current amplitude.
Open-Collector Transmit Fault Indicator (Table 1)
Shutdown Driver Output. Voltage output to control an external transistor for optional shutdown
circuitry.
Bias Voltage Sense. Isolated tap (3kΩ ±15%) on the bias output reduces component count when a
precision bias sense resistor is used.
Laser Bias-Current Output
Inverted Modulation-Current Output (Connect Pins 19 and 20 Together). I
when input data is low.
Noninverted Modulation-Current Output (Connect Pins 21 and 22 Together). I
when input data is high.
Monitor Photodiode Input. Connect this pin to the anode of a monitor photodiode. A capacitor to
ground is required to filter the high-speed AC monitor photocurrent.
Monitor Photodiode Voltage Sense. Isolated tap (3kΩ ±15%) on the MD input reduces component
count when a precision photodiode current-sense resistor is used.
Connect a capacitor (C
pole of the APC feedback loop.
(See Pin 26.)
A resistor connected from this pin to ground sets the desired constant portion of the modulation
current.
Modulation-Current Compensation from Bias. Couples the bias current to the modulation current.
Mirrors I
Threshold for Temperature Compensation. A resistor at this pin programs the temperature, above
which compensation is added to the modulation current.
Modulation-Current Compensation from Temperature. A resistor at this pin sets the temperature
coefficient of the modulation current when above the threshold temperature. Leave open for zero
temperature compensation.
Ground. Solder the exposed pad to the circuit board ground for specified thermal and electrical
performance.
A resistor connected from this pin to ground sets the desired average optical power.
BIAS
through an external resistor. Leave open for zero coupling.
APC
) between pin 26 (APCFILT1) and pin 27 (APCFILT2) to set the dominant
FUNCTION
Ratio Control
Pin Description
MOD
MOD
flows into this pin
flows into this pin
7