MAX3740A datasheet(6/15 Pages) MAXIM

Part #	MAX3740A

Description	3.2Gbps SFP VCSEL Driver with Diagnostic Monitors

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Manufacturer	MAXIM [Maxim Integrated Products]

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3.2Gbps SFP VCSEL Driver with Diagnostic

Monitors

6

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VCC = +3.3V, RTC = 0

Ω, PEAKSET open, measured electrically with a 50Ω load AC-coupled to OUT+, TA = +25°C, unless otherwise

noted.)

BIAS CURRENT vs. RBIASSET

RBIASSET (

Ω)

10k

1m

10m

100m

100

μ

1k

100k

MODULATION CURRENT vs. RMODSET

RMODSET (

Ω)

1k

10m

100m

1m

10k

100

MEASURED WITH A

50

Ω ELECTRICAL LOAD

MONITOR DIODE CURRENT

vs. RPWRSET

RPWRSET (

Ω)

1k

10

μ

100

μ

1m

10m

1

μ

100

10k

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

10

-15

20

30

40

50

60

70

80

10

-40

85

IMOD = 2mA

IMOD = 15mA

INPUT RETURN LOSS

FREQUENCY (Hz)

1G

-35

-30

-25

-20

-15

-10

-5

0

-40

100M

10G

DIFFERENTIAL

MEASUREMENT

OUTPUT RETURN LOSS

FREQUENCY (Hz)

1G

-16

-14

-12

-10

-8

-6

-4

-2

0

-18

100M

10G

SINGLE-ENDED

MEASUREMENT

MODULATION CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

80

70

60

50

40

30

20

10

5

6

7

8

9

10

11

4

090

RMOD = 1.35k

Ω

RTC = 1k

Ω

RTC = 500k

Ω

RTC = 100k

Ω

RTC = 60k

Ω

RTC = 10k

Ω

RTC = 5k

Ω

RTC = 100

Ω

MODULATION CURRENT TEMPCO

vs. RTC

RTC (

Ω)

100k

10k

1k

500

1500

2500

3500

4500

5500

-500

100

1M

REFERENCED TO +25

°C

MONITOR DIODE CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

60

35

-15

10

125

150

175

200

225

250

275

300

100

-40

85

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