MAX3263CAG

MAX3263CAG Datasheet

The MAX3263 is a complete, easy-to-program, single +5V-powered, 155Mbps laser diode driver with complementary enable inputs and automatic power control APC . The MAX3263 accepts differential PECL inputs and provides complementary output currents. A temperature-stabilized reference voltage is provided to simplify laser current programming. This allows modulation current to be programmed up to 30mA and bias current to be programmed from up to 60mA with two external resistors.

Part	Datasheet
MAX3263CAG	MAX3263CAG (pdf)

Related Parts	Information
MAX3263CAG+T	MAX3263CAG+T
MAX3263CAG+	MAX3263CAG+

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Single +5V, Fully Integrated, 155Mbps Laser Diode Driver The MAX3263 is a complete, easy-to-program, single +5V-powered, 155Mbps laser diode driver with complementary enable inputs and automatic power control APC . The MAX3263 accepts differential PECL inputs and provides complementary output currents. A temperature-stabilized reference voltage is provided to simplify laser current programming. This allows modulation current to be programmed up to 30mA and bias current to be programmed from up to 60mA with two external resistors. An APC circuit is provided to maintain constant laser power in transmitters that use a monitor photodiode. Only two external resistors are required to implement the APC function. The MAX3263’s fully integrated feature set includes a TTL-compatible laser failure indicator and a programmable slow-start circuit to prevent laser damage. The slow-start is preset to 50ns and can be extended by adding an external capacitor. o Rise Times Less than 1ns o Differential PECL Inputs o Single +5V Supply o Automatic Power Control o Temperature-Compensated Reference Voltage o Complementary Enable Inputs Ordering Information PART MAX3263CAG TEMP. RANGE 0°C to +70°C PIN-PACKAGE 24 SSOP Laser Diode Transmitters 155Mbps SDH/SONET 155Mbps ATM Configuration TOP VIEW VREF2 1 IPINSET 2 FAILOUT 3 GNDB 4 VIN+ 5 VIN- 6 GNDB 7 VCCB 8 ENB- 9 ENB+ 10 VREF1 11 OSADJ 12 MAX3263 SSOP 24 SLWSTRT 23 IPIN 22 VCCA 21 GNDA 20 OUT+ 19 GNDA 18 OUT17 GNDA 16 IBIASOUT 15 IMODSET 14 IBIASSET 13 IBIASFB Operating Circuit +5V 0.01µF +5V 0.01µF PECL INPUTS VCCA VCCB VIN+ OUT+ VIN- GNDA GNDB IPIN PHOTODIODE +5V LASER MAX3263 ENB+ IBIASOUT ENBSLWSTRT VREF1 OUTFAILOUT IBIASFB For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at Single +5V, Fully Integrated, 155Mbps Laser Diode Driver MAX3263 ABSOLUTE MAXIMUM RATINGS Terminal Voltage with respect to GND Supply Voltages VCCA, VCCB .............................-0.3V to +6V VIN+, VIN-, FAILOUT to VCC OUT+, OUT-, IBIASOUT to VCC ENB+, ENB- ......................VCC or +5.5V, whichever is smaller Differential Input Voltage \|VIN+ - VIN-\| .........................+3.8V Input Current IBIASOUT to 75mA OUT+, OUT- to 40mA IBIASSET to 1.875mA to 2mA IPIN, IPINSET, to 2mA to 10mA to 2mA Output Current VREF1, to 20mA SLWSTRT to 5mA Continuous Power Dissipation TA = +70°C SSOP derate 8mW/°C above +70°C ..........................640mW Operating Temperature Range...............................0°C to +70°C Junction Temperature Storage Temperature Range .............................-55°C to +175°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 VCC = VCCA = VCCB = +4.75V to +5.25V, TA = 0°C to +70°C, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS Range of Programmable Laser Bias Current IBIAS Reference Voltage Available Reference Current Supply Current PECL Input High PECL Input Low TTL High Input TTL Low Input FAILOUT Output High FAILOUT Output Low VREF IREF IVCC VIH VIL VIH VIL VOH VOL TA = +25°C Note 1 Loaded with pull-up resistor to VCC Loaded with pull-up resistor to VCC VCC - VCC - V Note 1 IVCC = IVCCA + IVCCB, IBIAS = 60mA, IMOD = 30mA, and IPIN = 140µA. AC ELECTRICAL CHARACTERISTICS VCC = VCCA = VCCB = +4.75V to +5.25V, RLOAD at OUT+ and OUT- = connected to VCC, TA = 0°C to +70°C, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C. Note 2 PARAMETER CONDITIONS MIN TYP MAX UNITS Range of Programmable Modulation Current IMOD Minimum differential input swing is 1100mVp-p Note 3 Modulation-Current Rise and Fall Time tR, tF IBIAS = 25mA, IMOD = 12mA, 4ns unit interval measured from 10% to 90% Aberrations, Rising and Falling Edge OS IMOD = 12mA, TA = +25°C ±15 Modulation-Current PulseWidth Distortion PWD IBIAS = 25mA, IMOD = 12mA, 8ns period Note 2 AC characteristics are guaranteed by design and characterization. Note 3 An 1100mVp-p differential is equivalent to complementary 550mVp-p signals on VIN+ and VIN-. Single +5V, Fully Integrated, 155Mbps Laser Diode Driver

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Single +5V, Fully Integrated, 155Mbps Laser Diode Driver

The MAX3263 is a complete, easy-to-program, single +5V-powered, 155Mbps laser diode driver with complementary enable inputs and automatic power control APC . The MAX3263 accepts differential PECL inputs and provides complementary output currents. A temperature-stabilized reference voltage is provided to simplify laser current programming. This allows modulation current to be programmed up to 30mA and bias current to be programmed from up to 60mA with two external resistors.

An APC circuit is provided to maintain constant laser power in transmitters that use a monitor photodiode. Only two external resistors are required to implement the APC function.

The MAX3263’s fully integrated feature set includes a TTL-compatible laser failure indicator and a programmable slow-start circuit to prevent laser damage. The slow-start is preset to 50ns and can be extended by adding an external capacitor.
o Rise Times Less than 1ns o Differential PECL Inputs o Single +5V Supply o Automatic Power Control o Temperature-Compensated Reference Voltage o Complementary Enable Inputs
Ordering Information

PART MAX3263CAG

TEMP. RANGE 0°C to +70°C

PIN-PACKAGE 24 SSOP

Laser Diode Transmitters 155Mbps SDH/SONET 155Mbps ATM

Configuration

TOP VIEW

VREF2 1

IPINSET 2

FAILOUT 3

GNDB 4

VIN+ 5

VIN- 6

GNDB 7

VCCB 8

ENB- 9

ENB+ 10

VREF1 11

OSADJ 12

MAX3263

SSOP
24 SLWSTRT 23 IPIN 22 VCCA 21 GNDA 20 OUT+ 19 GNDA 18 OUT17 GNDA 16 IBIASOUT 15 IMODSET 14 IBIASSET 13 IBIASFB

Operating Circuit
+5V 0.01µF
+5V 0.01µF

PECL INPUTS

VCCA VCCB

VIN+

OUT+

VIN-

GNDA

GNDB

IPIN

PHOTODIODE
+5V LASER

MAX3263

ENB+

IBIASOUT

ENBSLWSTRT

VREF1

OUTFAILOUT IBIASFB
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at

Single +5V, Fully Integrated, 155Mbps Laser Diode Driver

MAX3263

ABSOLUTE MAXIMUM RATINGS

Terminal Voltage with respect to GND Supply Voltages VCCA, VCCB .............................-0.3V to +6V VIN+, VIN-, FAILOUT to VCC OUT+, OUT-, IBIASOUT to VCC ENB+, ENB- ......................VCC or +5.5V, whichever is smaller

Differential Input Voltage |VIN+ - VIN-| .........................+3.8V

Input Current IBIASOUT to 75mA OUT+, OUT- to 40mA IBIASSET to 1.875mA to 2mA

IPIN, IPINSET, to 2mA to 10mA to 2mA Output Current VREF1, to 20mA SLWSTRT to 5mA Continuous Power Dissipation TA = +70°C SSOP derate 8mW/°C above +70°C ..........................640mW Operating Temperature Range...............................0°C to +70°C Junction Temperature Storage Temperature Range .............................-55°C to +175°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

VCC = VCCA = VCCB = +4.75V to +5.25V, TA = 0°C to +70°C, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Range of Programmable Laser Bias Current

IBIAS

Reference Voltage Available Reference Current Supply Current PECL Input High PECL Input Low TTL High Input TTL Low Input FAILOUT Output High FAILOUT Output Low

VREF IREF IVCC VIH VIL VIH VIL VOH VOL

TA = +25°C Note 1

Loaded with pull-up resistor to VCC Loaded with pull-up resistor to VCC

VCC -

VCC - V

Note 1 IVCC = IVCCA + IVCCB, IBIAS = 60mA, IMOD = 30mA, and IPIN = 140µA.

AC ELECTRICAL CHARACTERISTICS

VCC = VCCA = VCCB = +4.75V to +5.25V, RLOAD at OUT+ and OUT- = connected to VCC, TA = 0°C to +70°C, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C. Note 2

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Range of Programmable Modulation Current

IMOD

Minimum differential input swing is 1100mVp-p Note 3

Modulation-Current Rise and Fall Time
tR, tF

IBIAS = 25mA, IMOD = 12mA, 4ns unit interval measured from 10% to 90%

Aberrations, Rising and Falling Edge

OS IMOD = 12mA, TA = +25°C
±15

Modulation-Current PulseWidth Distortion

PWD IBIAS = 25mA, IMOD = 12mA, 8ns period

Note 2 AC characteristics are guaranteed by design and characterization. Note 3 An 1100mVp-p differential is equivalent to complementary 550mVp-p signals on VIN+ and VIN-.

Single +5V, Fully Integrated, 155Mbps Laser Diode Driver

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Datasheet ID: MAX3263CAG 647297