MAX3971 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – +3.3V, 10.3Gbps Limiting Amplifier

19-2086; Rev 1; 12/02
+3.3V, 10.3Gbps Limiting Amplifier
General Description
The MAX3971 is a compact, low-power, 10.3Gbps limit-
ing amplifier. It accepts signals over a wide range of input
voltage levels and provides constant-level output volt-
ages with controlled edge speeds. It functions as a data
quantizer. The output of the amplifier is a 250mV_P-P differ-
ential CML signal with a 100Ω differential termination.
The MAX3971 is designed to work with the MAX3970, a
10.3Gbps transimpedance amplifier (TIA). The limiting
amplifier operates on a single +3.3V supply and con-
sumes only 155mW. The part functions over the 0°C to
+85°C temperature range. It also has a disable function
that allows the outputs to be squelched if required by
the application.
The MAX3971 is offered in die form and in a compact
4mm x 4mm, 20-pin QFN plastic package.
____________________________Features
o Single +3.3V Power Supply
o 155mW Power Consumption
o 9.5mV_P-P Input Sensitivity
o 800mV_P-P Input Overload
o 3.4ps_P-P Deterministic Jitter
o Dice and 4mm x 4mm QFN Packages
o Output Disable Feature
Applications
10-Gigabit Ethernet Optical Receivers
VSR OC-192 Receivers
10-Gigabit Fibre Channel Receivers
Pin Configuration appears at end of data sheet.
Ordering Information
PART
MAX3971UGP
TEMP. RANGE
0°C to +85°C
PIN-PACKAGE
20 QFN*
MAX3971U/D
0°C to +85°C
Dice**
*Exposed pad
**Dice are designed to operate over a 0°C to +110°C junction
temperature (T_J) range, but are tested and guaranteed at
T_A = +25°C.
Typical Application Circuit
+3.3V
0.1µF
TIA
0.1µF
MAX3970
0.1µF
+3.3V
SUPPLY FILTER
CZ- CZ+
GNDIN+
IN+
V_CC1 V_CC2 V_CC3
0.1µF
OUT+
100Ω
IN-
GNDIN-
MAX3971
0.1µF
OUT-
DISABLE
100Ω
________________________________________________________________ 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.