270Mbps SFP LED Driver

2

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ABSOLUTE MAXIMUM RATINGS

Current into OUT+, OUT- ................................-40mA to +160mA

Differential Output Voltage (OUT+ to OUT-) .........-3.3V to +3.3V

Voltage at PB1, PB2, PB3,

Voltage at TCMIN, TCNOM, TC, MODSET, MON ....-0.5V to +2V

24-Lead Thin QFN (derate 20.8mW/C

°

above +85

°C).............................................................1354mW

Operating Junction Temperature Range ...........-40°C to +150°C

Die Attach Temperature...................................................+400°C

Storage Temperature Range .............................-50°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Data Input High Voltage

-1.165

-0.880

V

Data Input Low Voltage

-1.810

-1.475

V

Supply Current

(Note1)

30

39

mA

Input Current at IN+ or IN-

-50

+50

µA

°C

110

°C

124

Ω

(Note 2)

°C

139

°C14

°C18

Ω

(Note 3)

°C22

Modulation Current

(Note 3)

66.0

75

84.5

mA

PB1, PB2, PB3 = (open, open, open)

0.368

0.400

0.451

0.575

0.625

0.696

Prebias Voltage

0.848

0.925

1.026

V

Maximum tempco (TC open)

12,000

Nominal tempco (TC shorted to TCNOM)

3600

Temperature Coefficient of

Modulation Current

Minimum tempco (TC shorted to TCMIN)

2500

ppm/°C

Prebias Resistor

66

78

90

Ω

TX_DISABLE Resistance

50

65

100

k

Ω

TX_DISABLE High

2.0

V

TX_DISABLE Low

0.8

V

Monitor Gain

Ω, TC = TCMIN

0.92

1

1.08

A/A

Note 2: TC connected to TCMIN.

approximately 80mA), TC connected to TCNOM.

Note 4: The TX_DISABLE pin is internally pulled low. The driver is enabled when TX_DISABLE is left open.