VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
VSC7969
Table 3: Pad Coordinates
Signal
Name
GND
BG_VREF
GND
SD_TP
SD_ADJ
VOUTN
SD_OUT
GND
VOUTN
GND
VOUTP
GND
IMON
VOUTP
GMD
CSDN
CSDP
GND
GND
GND
GND
FILTER
IN
GND
VCCS
VCCD
3.125Gb/s Integrated Transimpedance
and Limiting Amplifier with Signal Detect
Pad
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Coordinates (µm)
Description
X
130
130
130
130
130
137
280
405
530
655
780
905
1030
1173
1180
1180
1180
1180
1180
1030
905
780
530
405
280
137
Y
250
375
500
625
750
875
875
875
875
875
875
875
875
875
750
625
500
375
250
125
125
125
125
125
125
125
Negative power supply rail (typically 0V)
Band Gap voltage reference 1.24V for testpoint, no connect
Negative power supply rail (typically 0V)
Signal Detect test point, DO NOT CONNECT.
Signal Detect threshold adjustment (see
Application amd Usage
section)
Complementary logic output (logic LOW when photocurrent is
HIGH)
Signal detect output (logic HIGH when photocurrent exceeds
SD
A
)
Negative power supply rail (typically 0V)
Complementary logic output (logic LOW when photocurrent is
HIGH)
Negative power supply rail (typically 0V)
Positive logic output (logic HIGH when photocurrent is HIGH)
Negative power supply rail (typically 0V)
Photocurrent Monitor
Positive logic output (logic HIGH when photocurrent is HIGH)
Negative power supply rail (typically 0V)
Test point for Signal Detect capacitor. DO NOT CONNECT.
Test point for Signal Detect capacitor. DO NOT CONNECT.
Negative power supply rail (typically 0V)
Negative power supply rail (typically 0V)
Negative power supply rail (typically 0V)
Negative power supply rail (typically 0V)
Photodetector cathode connection (filtered V
CC
)
Photodetector anode connection
Negative power supply rail (typically 0V)
Positive power supply rail for 3.3V operation
Positive power supply rail for 5V operation
G52355-0, Rev 2.0
02/09/01
©
VITESSE
SEMICONDUCTOR CORPORATION
• 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Page 5
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