19-2391; Rev 0; 4/02
+3.3V, 10.7Gbps Limiting Amplifier
General Description
Features
The MAX3971A is a compact 10.7Gbps limiting amplifier.
It accepts signals over a wide range of input voltage levels
and provides constant-level output voltages with con-
trolled edge speeds. It functions as a data quantizer with
o Single +3.3V Power Supply
o 2mV Input Sensitivity
P-P
o 1.8ps Typical Deterministic Jitter (V = 800mV
)
IN
P-P
a 240mV
differential CML output signal with a 100Ω dif-
P-P
o Dice and 4mm × 4mm QFN Package Available
o Output Disable Feature
ferential termination. The MAX3971A has a disable func-
tion that allows the outputs to be squelched if required by
the application.
The MAX3971A is designed to work with the MAX3970
transimpedance amplifier (TIA). The limiting amplifier
operates on a single +3.3V supply and functions over a
0°C to +85°C temperature range.
The MAX3971A is offered in die form and in a compact
4mm × 4mm 20-pin QFN package.
Applications
VSR OC-192 Receivers
Ordering Information
10Gbps Ethernet Optical Receivers
10Gbps Fibre Channel Receivers
PART
TEMP RANGE
0°C to +85°C
0°C to +85°C
PIN-PACKAGE
20 QFN-EP*
Dice**
MAX3971AUGP
MAX3971AU/D
*EP = exposed pad
**Dice are designed to operate over a 0°C to +110°C junction
temperature (T ) range, but are tested and guaranteed at
J
T
A
= +25°C.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
+3.3V
0.1µF
SUPPLY FILTER
+3.3V
CZ-
CZ+
V
V
V
CC2 CC3
CC1
GNDIN+
IN+
0.1µF
0.1µF
0.1µF
50Ω
50Ω
OUT+
OUT-
TIA
100Ω
0.1µF
IN-
GNDIN-
MAX3970
MAX3971A
DISABLE
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.