MAX3656 データシートの表示（PDF） - Maxim Integrated

部品番号

コンポーネント説明

メーカー

MAX3656

155Mbps to 2.5Gbps Burst-Mode Laser Driver

Maxim Integrated 

155Mbps to 2.5Gbps Burst-Mode

Laser Driver

(TA = +25°C, unless otherwise noted.)

Typical Operating Characteristics (continued)

TIMING DIAGRAM, BURST ON

MAX3656 toc12

TIMING DIAGRAM, BURST OFF

MAX3656 toc13

VMOD+

VMOD+

VBIAS+

VBIAS+

BURST-ENABLE

SIGNAL

BURST-DISABLE

SIGNAL

500ps/div

1ns/div

Pin Description

PIN

1, 4, 9,

15, 18, 21

2

3

5

6

7

8, 11, 19

10

12

13

14

16

17

20

NAME

VCC

IN+

IN-

BEN+

BEN-

EN

GND

FAIL

LONGB

BIAS-

BIAS+

OUT+

OUT-

MD

FUNCTION

Power-Supply Voltage

Noninverting Data Input with On-Chip Biasing

Inverting Data Input with On-Chip Biasing

Noninverting Burst-Enable Input with On-Chip Biasing

Inverting Burst-Enable Input with On-Chip Biasing

TTL/CMOS Enable Input. Low for normal operation. Float or pull high to disable laser bias and

modulation currents.

Power-Supply Ground

TTL/CMOS Failure Output. Indicates APC failure when low.

TTL/CMOS Long Burst (See the Setting the LONGB Input Pin Section)

Inverting Laser Bias-Current Output. Connect through 15Ω to VCC.

Noninverting Laser Bias-Current Output. Bias current flows into this pin when BEN is high. Minimize

capacitance on this pin.

Noninverting Laser Modulation-Current Output. Modulation current flows into this pin when BEN and IN

are high.

Inverting Laser Modulation-Current Output. Connect through 15Ω to VCC.

Monitor Diode Input. Connect this pin to the anode of the monitor diode. Leave floating for open-loop

operation. Minimize capacitance on this pin.

Maximum Bias Current Set. A resistor connected from this pin to ground sets the maximum bias

22

BIASMAX current. The bias current cannot exceed this level. The APC loop controls the bias current up to the

level of the BIASMAX. For APC open-loop operation, this pin sets the laser bias current.

23

MODSET Modulation Current Set. A resistor connected from this pin to ground sets the desired modulation current.

24

APCSET

Average Power Control Set. A resistor connected from this pin to ground sets the desired average

optical power. Connect a 50kΩ resistor to ground for APC open-loop operation.

EP

Exposed Pad Ground. This pad must be soldered to ground.

_______________________________________________________________________________________ 7

Share Link: