VITESSE

SEMICONDUCTOR CORPORATION

G52203-0, Rev 3.0

Page 7

05/11/01

© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012

Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

Internet: www.vitesse.com

Preliminary Data Sheet

VSC7923

SONET/SDH 2.5Gb/s Laser Diode Driver

Figure 6: Control Signals VIP and VIB

Figure 7: Simplified Output Structure

50 mA

60 mA

I (MIB)

I (MIP)

VIP

VIB

1.5V (Typical)

2.1V (Maximum)

1.5V (Typical)

2.1V (Maximum)

Typical Bias Current v.s. Bias Voltage

Typical Modulation Current v.s. Modulation Voltage

X

X

X

X

X

X

NIOUT

IOUT

OUTPUT

DIFF

PAIR

VIB

MIB

MIP

IP