MOTOROLA MC10SX1130D, MC10SX1130DR2 Datasheet

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SEMICONDUCTOR TECHNICAL DATA

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by MC10SX1130/D

The MC10SX1 130 is high speed LED Driver/current switch specifically

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targeted for use in FDDI PMD and ANSI X3T9.3 FibreChannel 266
Mbits/s optical transmitters. The integrated circuit contains several
unique functional blocks which makes it easily configurable for use with a
variety of high performance LED devices. The part is fabricated using
Motorola’s proven MOSAIC III advanced bipolar process. The logic is
designed so that a data HIGH input results in the modulation current
flowing through the I

• Differential Data Inputs

• 300MHz Operation

• 100mA Peak Drive Current

• Extremely Low Jitter

• Duty Cycle Distortion Compensation

• Adjustable Output Current Tracking With Temperature

• Thermally Enhanced 16-Lead SOIC Package

• 75kΩ Data Input Pulldown Resistors

• +5V or –5.2V Operation

• V

Reference Available

BB

The device incorporates open collector outputs with a capability of
driving peak currents of 100mA. Since the output current switching
circuitry simply switches current between the complementary outputs, the
dynamic switching demands on the system power supply are greatly reduced. In addition, because the design is pure bipolar, the
device current drain is insensitive to the data pattern and frequency of operation.

The LED drive current is adjustable through the selection of an external set resistor, RSET. In addition, to allow for open loop
compensation for the LED’s negative optical output power tracking over temperature, a circuit is included to provide an
adjustable positive temperature tracking coefficient to the LED drive current. This is controlled through the selection of an
external resistor, RTCO.

The MC10SX1 130 incorporates novel pulse stretching circuitry which is intended to compensate for the turn-on delay and rise
and fall time asymmetry inherent in LED devices. The stretch circuitry can be used to pre-distort the input signal pulse width to
minimize the duty cycle distortion of the transmitted optical eye pattern. The stretch circuitry supports three different selections of
pre-distortion. This choice is accomplished through a unique ‘tri-state’ input which can be left open, tied to VCC, or tied to VEE to
determine the pre-distortion amount.

The device provides a VBB output for either single-ended use or as a DC bias for AC coupling the signal into the device. The
VBB pin should only be used as a bias for the MC10SX1 130 as its current sink/source capability is limited. Whenever used, the
VBB pin should be bypassed to ground via a 0.01µF capacitor.

pin to turn on the LED.

OUT

LED DRIVER

16

1

D SUFFIX

SOIC PACKAGE

CASE 751B-05

Pinout: 16-Lead Plastic Package (Top View)

Stretch VEEI

V

EE

1516 14 13 12 11 10

21 34567

VEEVCCVBBDIND

MOSAIC III is a trademark of Motorola.

3/94

OUT

RSET I

OUTVCCVEE

RTCO1RTCO2V

IN

 Motorola, Inc. 1994

9

8

EE

BLOCK DIAGRAM

ECL

BUFFER

D

IN

D

IN

V

BB

Stretch

PULSE WIDTH

ADJUST CIRCUIT

BIAS

CONTROL

1

REV 1

RTCO

2

I

OUTIOUT

RSETRTCO

PIN FUNCTION TABLE

Pin

D

IN

I

OUT

STRETCH Control input to select the amount of duty cycle pre-distortion. When the pin is left open, no pre-distortion is introduced.

RSET Resistor to set LED drive current. This resistor sets the tail current of the output current switch and should be connected

RTCO1, RTCO

V

CC

V

EE

V

BB

Differential data inputs.
Differential open collector outputs.

If the pin is connected to VCC, the output LOW state current pulse width is increased by 155ps. When it is connected to
VEE, the current pulse width is increased by 310ps.

to the VEE plane. Since the RSET voltage compensation circuit is referenced to VEE, the RSET voltage will track 1:1 with
VEE changes, thus the voltage across the RSET resistor will remain constant.

Terminals for positive temperature tracking resistor. This resistor controls the temperature tracking rate of the voltage at

2

the RSET pin, which in turn sets the LED drive current tracking. If the two pins are shorted together, the nominal tracking
rate is 1.4mV/°C and when a 2kΩ resistor is connected across the pins, the nominal tracking rate is 4.9mV/°C.

Most positive power supply input. +5V for PECL operation or ground for standard ECL operation.
Most negative power supply input. Ground for PECL operation or –5.2V for standard ECL operation.
Reference voltage for use in single ended applications or when the input signal is AC coupled into the device.

Function

V

EE

V

EE

Stretch V

V

10

Ω

1516 14 13 12 11 10

50

I

OUT

D

IN

Ω

IN

EE

PECL

BIAS

V

BB

CC

21 34567

RSET I

D

IN

50

IN

10

Ω

OUT

RTCO1RTCO

1k

Ω

PECL
BIAS

Ω

9

V

CC

V

EE

V

2

EE

8

Figure 1. T ypical +5V Applications Circuit

SUPPLY

+5.0V

DECOUPLING
CAPACITORS

MOTOROLA High Performance Frequency
2

Control Products — BR1334

ABSOLUTE MAXIMUM RATINGS

Symbol

V
V
I

out

T
V

EE

I

A

EE

Power Supply (VCC = 0V) –7.0 to 0 VDC
Input Voltage (VCC = 0V) 0 to –6.0 VDC
Output Current Continuous

Operating Temperature Range –40 to +85 °C
Operating Range (VCC = 0) –5.5 to –4.5 VDC

*

Parameter Value Unit

Surge

* Absolute maximum rating, beyond which, device life may be impaired.

100
110

mA

DC CHARACTERISTICS1 (RTCO = 1kΩ ±5%, R

Symbol Characteristic Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit

I

IH

I

IL

I

CC

V

IH

V

IL

V

BB

V

SET

IO

IO

V

TR

1. 10SX circuits are designed to meet the DC specifications shown in the table after thermal equilibrium has been established. The circuit is mounted in a test socket

or mounted on a printed circuit board and transverse air greater than 500lfm is maintained.

2. Note that in PECL applications, VIH, VIL, VBB will vary 1:1 with the VCC supply.

3. V

4. VTR tracking measures the rate of change of the V

Input HIGH Current
(DIN, DIN

Input LOW Current
(DIN, DIN

Quiescent Supply Current
(No Load on RSET Pin)

Input HIGH Voltage

Input LOW Voltage

Output Reference Voltage

Output Voltage at RSET Pin
VCC = 5.0V, RTCO = Short
VEE = GND RTCO = 1kΩ

VCC = GND
VEE = –5.2V RTCO = 1kΩ

Output ‘ON’ Current

on

(IOUT, IOUT
Output ‘OFF’ Current

off

(IOUT, IOUT
VSET Tracking

tracks 1:1 with the VEE supply to maintain the same voltage across the RSET resistor.

SET

Pins)

Pins)

2

VCC = 5.0V, VEE = GND

VCC = GND, VEE = -4.5 to -5.5V

2

VCC = 5.0V, VEE = GND

VCC = GND, VEE = -4.5 to -5.5V

2

VCC = 5.0V, VEE = GND

VCC = GND, VEE = -4.5 to -5.5V

RTCO = 2kΩ

3

Pins)

Pins)

Short Between RTCO1 and RTCO2

1kΩ Between RTCO1 and RTCO2
2kΩ Between RTCO1 and RTCO2

RTCO = Short

RTCO = 2kΩ

4

0.5 0.5 0.5 0.5

12 17 24 12 17 24 12 18 24 12 19 24

3770

-1230

3050

-1950

3570

-1430

30 75 30 75 30 75 30 100

voltage over temperature.

SET

= R at I

SET

-40°C 0°C 25°C 85°C

200 200 200 200

4110

-890

3500

-1500

3700

-1300

600
430
230

-4400

-4570

-4770

50 50 50 50

1.4

3.4

4.9

OUT

3830

-1170

3050

-1950

3620

-1380

= R at I

635
515
355

-4365

-4485

-4645

1.4

3.4

4.9

= 10Ω ±1%, Unless Otherwise Noted)

OUT

4160

-840

3520

-1480

3730

-1270

3870

-1130

3050

-1950

3650

-1350

610
570
470

-4390

-4430

-4530

690
650
550

-4310

-4350

-4450

1.4

3.4

4.9

4190

-810

3520

-1480

3750

-1250

770
730
630

-4230

-4270

-4370

3940

-1060

3050

-1950

3690

-1310

775
855
845

-4225

-4145

-4155

1.4

3.4

4.9

µA

µA

mA

mV

4280

-720
mV

3555

-1445
mV

3810

-1190
mV

mA

µA

mV/

°C

Control Products — BR1334

MOTOROLAHigh Performance Frequency

3