SY88722VKG-TR Datasheet Information Summary

General Description

The SY88722VKG-TR is a high-speed laser diode driver designed for optical transmission applications. It features a single 3.3V or 5V power supply and can operate at speeds up to 622Mbps. The device is capable of delivering a modulation current up to 30mA and offers PECL output enable and differential PECL inputs. It is available in a compact 10-pin MSOP package.

Applications

• 622Mbps SONET

Features

• Single 3.3V or 5V power supply
• Up to 622Mbps operation
• Modulation current up to 30mA
• PECL output enable
• Differential PECL inputs
• Tiny 10-pin (3mm) MSOP package

Functional Block Diagram

The functional block diagram includes the following key components:

• External resistor REXT between /OUT and VCC
• External resistor RSET for setting the reference current
• Internal logic for controlling the modulation current
• Differential open collector current outputs

Pin Description

TableCopy

Truth Table

TableCopy

Notes:

1. L = LOW, H = HIGH, X = don't care.
2. H = IOUT = 0mA.

Package/Ordering Information

• Part Number: SY88722VKG-TR
• Package Type: K10-1
• Operating Range: Industrial
• Lead Finish: Pb-Free bar-line indicator NiPdAu
• Ordering Information: Available in tape and reel format.

Absolute Maximum Ratings

• Power Supply Voltage (VCC): 0V to +7.0V
• Input Voltage (VIN): 0V to VCC
• Output Current (IOUT): 30mA
• Power Dissipation (PD): 250mW
• Lead Temperature (soldering, 20 sec.): +260°C
• Storage Temperature Range (TS): –55°C to +125°C

Operating Ratings

• Supply Voltage (VIN): +3.0V to +3.6V or +4.5V to +5.5V
• Ambient Temperature (TA): –40°C to +85°C
• Junction Temperature (TJ): –40°C to 100°C
• Resistor to Dissipate Power (REXT): 10Ω to 50Ω
• Laser Diode Serial Resistor (RSER): 0Ω to 50Ω
• Resistor to Adjust Current (RSET): 700Ω to 20,000Ω

DC Electrical Characteristics

• VIH (Input HIGH Voltage): VCC–1.165 to VCC–0.880 V
• VIL (Input LOW Voltage): VCC–1.810 to VCC–1.475 V
• VREF (Reference Voltage): 1.7 to 2.3 V
• IIL (Input LOW Current): 0.5 µA
• IIH (Input HIGH Current): 100 µA
• ICC (Supply Current): 25 mA (IMOD = 25mA)
• IOUT_OFF (Output LOW Current): 450 to 1000 µA (/EN = HIGH)
• IOUT (Modulation Current): 30 mA
• ARSET (IOUT/IRSET): 30 to 44
• VOUT (Voltage at OUT, /OUT): VCC–1.4 to VCC V
• COUT (Capacitance on OUT, /OUT): 2.5 pF

AC Electrical Characteristics

• Propagation Delay (DIN – OUT, /EN – OUT): 1000 ps (IOUT = 10mA)
• Rise/Fall Time: 400 ps (20% to 80%)
• Output Current Ringing: 10% (IOUT = 5 to 30mA)

Typical Operating Characteristics

• IMOD vs. RSET: The modulation current (IMOD) is inversely proportional to the resistance of RSET. The typical operating characteristics show that at VCC = 3.3V and VCC = 5.0V, the modulation current varies with the value of RSET.

Package Information

• Package Type: 10-lead MSOP (K10-1)
• Manufacturer: Micrel, Inc.
• Address: 2180 Fortune Drive, San Jose, CA 95131, USA