vsc7928 Vitesse Semiconductor Corp, vsc7928 Datasheet
vsc7928
Available stocks
Related parts for vsc7928
vsc7928 Summary of contents
Page 1
... Enhanced Pinout General Description The VSC7928 is a single 5V supply, 3.2Gb/s laser diode driver with direct access to the laser modulation and bias FETs. Laser bias and modulation currents are set by external components allowing precision monitor- ing and setting of the current levels. Data density outputs are provided to allow the user to adjust the laser bias in high unbalanced data applications ...
Page 2
... No connection (leave floating or connect to GND) * — 24/32 Rating Min Typ Max — — 0 -5.5 -5.2 -4.9 (1) (2) — -40 85 — — 125 Internet: www.vitesse.com Preliminary Data Sheet VSC7928 Description Limit V to -6.0V CC -55° 125°C -65°C to +150°C Units Conditions V V °C Power dissipation = 1.3W °C G52246-0, Rev 3.0 04/05/01 ...
Page 3
... Preliminary Data Sheet VSC7928 Table 5: High Speed Inputs and ECL Outputs Symbol Parameter V Single-ended Input Voltage Swing IN V Differential Input Common Mode Range CM V ECL Output High Voltage OH V ECL Output Low Voltage OL V On-Chip Terminations IN Table 6: Power Dissipation Symbol Parameter ...
Page 4
... VSS DINTERM to -2.0V for Differential ECL Inputs Figure 2: Single-Ended Operation 0.1µf 0.1µf 0.1µf GND GND 0.1µf 0.1µf 0.1µf GND GND Internet: www.vitesse.com Preliminary Data Sheet VSC7928 GND DATA BUFFER (CLOCK BUFFER) VSS 7928 DIN DINTERM NDIN CLK CLKTERM NCLK G52246-0, Rev 3.0 04/05/01 ...
Page 5
... Preliminary Data Sheet VSC7928 SOURCE SOURCE SOURCE G52246-0, Rev 3.0 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 04/05/01 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com VITESSE SEMICONDUCTOR CORPORATION SONET/SDH 3.2Gb/s Laser Diode Driver Figure 3: Single-Ended AC-Coupled ...
Page 6
... VSS + 1.5 Volts (Typical) Typical Bias Current v.s. Bias Voltage I (MIP) VIP VSS + 1.5 Volts (Typical) Typical Modulation Current v.s. Modulation Voltage Figure 7: Simplified Output Structure NIOUT IOUT IBIAS OUTPUT DIFF PAIR I MOD X MIP Internet: www.vitesse.com Preliminary Data Sheet VSC7928 VIB X I BIAS X MIB G52246-0, Rev 3.0 04/05/01 ...
Page 7
... Preliminary Data Sheet VSC7928 Figure 8: Pad Assignments for VSC7928 Die 50 m PAD 34 PAD 33 PAD 32 PAD 31 PAD 30 PAD 29 PAD 28 PAD 27 PAD 26 120 DCC VSS PAD 1 120 m N/C 150 m PAD 2 NDIN PAD 3 DIN 30 m PAD 4 DINT PAD 5 CLOCKT PAD 6 CLOCK PAD 7 NCLOCK PAD 8 N/C SEL ...
Page 8
... VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com VITESSE SEMICONDUCTOR CORPORATION Note: Package lid and bottom heat spreader are electrically connected to GND within the package. Internet: www.vitesse.com Preliminary Data Sheet VSC7928 Dimension mm Tolerance A 1.60 MAX A1 .10 ± ...
Page 9
... Preliminary Data Sheet VSC7928 32-Pin Plastic Package Pin Designation GND NDIN DIN DINT CLKT CLK NCLK GND G52246-0, Rev 3.0 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 04/05/01 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com VITESSE SEMICONDUCTOR CORPORATION SONET/SDH 3 ...
Page 10
... Ordering Information The order number for this product is formed by a combination of the device number, and package style. Device Type VSC7928: 3.2Gb/s Laser Diode Driver Notice Vitesse Semiconductor Corporation (“Vitesse”) provides this document for informational purposes only. This document contains pre-production information about Vitesse products in their concept, development and/or testing phase ...