OPTOELECTRONIC PRODUCTS
PHYSICAL LAYER PRODUCT
VSC7997, VSC7998
10.7 Gb/s Transimpedance Amplifier
V
+5V
500Ω
10kΩ
OFFP
I
IN
OUTP
10kΩ
4.8kΩ
7.2kΩ V
EE
OUTN
OFFN
=0V
CC
F E AT U R E S :
5KW Differential Transimpedance (VSC7997)
1.4KW Differential Transimpedance (VSC7998)
70mA Typical Supply Current
12pA/rtHz Typical Input Noise Current Density
Adjustable Output Offset
Low Group Delay
FBIN
V
EE
= -5.2V
PA D D I A G R A M :
The outputs of the VSC7997 and VSC7998 are linear for inputs up to
250mAp-p and 1000mAp-p respectively. For higher inputs, the output limits at
typically 1000mV differential, increasing the dynamic range of the system by
reducing the possibility of exceeding the input voltage range of the limiting
amplifier or clock and data recovery circuit.
1957µ (77.0mil)
BENEFITS:
High Gain with Low Power
Direct Connection to a Demux without a Post Amplifier
APD or PIN Diode Compatible
1800µ (70.9mil)
Pad 21
GND
Pad 20
FBIN
Pad 19
GND
Pad 18
OFFP
Pad 17
GND
Pad 16
OFFN
Pad 15
GND
Pad 14
GND
Pad 13
GND
Pad 12
OUTP
Pad 11
GND
Pad 10
OUTN
Pad 9
GND
Pad 8
GND
Pad 1
GND
Pad 2
VEE
Pad 3
VEE
Pad 4
VEE
Pad 5
VEE
Pad 6
VEE
Pad 7
GND
A P P L I C AT I O N S :
SONET/SDH Networking
Transponder Modules
DWDM Systems
G.975/709 Forward Error Correction (FEC)
Gigabit Ethernet
Telecommunications Transmission Systems
Test Equipment
1957µ
(77.0mil)
Pad 22
GND
Pad 23
GND
Pad 24
GND
Pad 25
IIN
Pad 26
GND
Pad 27
GND
Pad 28
GND
Top View
PB-VSC7997/7998-002
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
