VSC7959W Просмотр технического описания (PDF) - Vitesse Semiconductor
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VSC7959W Datasheet PDF : 10 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
3.125Gb/s CML Limiting Amplifier with LOS Detect
Advance Product Information
VSC7959
Package Pin Descriptions
Figure 1: Pin Diagram
Top View
TSSOP-16 Package
CZ1
1
16
CZ2
2
15
GND
3
14
IN+
4
13
IN-
5
VSC7959
12
GND
6
11
LEVEL
7
10
TH
8
9
NC
SQUELCH
VCC
OUT+
OUT-
VCC
LOS
LOS
Table 5: Pin Identifications
Pin Name Pin No.
Description
CZ1
CZ2
GND
IN+
IN-
GND
LEVEL
TH
LOS
LOS
VCC
OUT-
OUT+
VCC
SQUELCH
NC
1
Offset Correction Loop Capacitor. Place capacitor between this pin and CZ2 to alter time constant
of offset correction loop. See Detailed Description section.
2
Offset Correction Loop Capacitor. Place capacitor between this pin and CZ1 to alter time constant
of offset correction loop. See Detailed Description section.
3
Supply Ground
4
Noninverted Input Signal
5
Inverted Input Signal
6
Supply Ground
Output Current Level. This pin may either be connected to ground or left unconnected. Connecting
7
to ground causes output current to be 20mA. The output is 16mA when left unconnected. See
Detailed Description section.
8
Loss of Signal (LOS) Threshold. Connect a resistor from this pin to ground to set the input signal
level at which LOS outputs will be asserted. See Application Information section.
9
Inverted Loss of Signal Output. LOS is HIGH for input signals above the threshold programmed by
TH. See Detailed Description section.
10
Noninverted Loss of Signal Output. LOS is LOW for input signals above the threshold programmed
by TH. See Detailed Description section.
11
Power Supply
12
Inverted Data Output
13
Noninverted Data Output
14
Power Supply
15
Squelch Input. Squelch is disabled if this pin is unconnected or set LOW. When SQUELCH is
HIGH, OUT+ and OUT- are forced to static levels.
16
No Connection
Page 4
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
G52358-0, Rev 2.0
02/09/01
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