MAX3271 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – +3.3V, 2.5Gbps Low-Power Transimpedance Amplifier

19-2105; Rev 0; 7/01
+3.3V, 2.5Gbps Low-Power
Transimpedance Amplifier
General Description
The MAX3271 transimpedance amplifier provides a
compact low-power solution for 2.5Gbps communica-
tions. It features 495nA input-referred noise, 2GHz
bandwidth, and 2mA AC input overload.
The MAX3271 is a compact 30mil x 50mil die and
requires no external compensation capacitor. It oper-
ates from a single +3.3V supply and consumes 83mW.
A space-saving filter connection is provided for positive
bias to the photodiode through a 750Ω resistor to V_CC.
These features allow easy assembly into a TO-46 or
TO-56 header with a photodiode.
The MAX3271 has a typical optical dynamic range of
-21dBm to +3dBm in a shortwave configuration or
-24dBm to 0dBm in a longwave configuration. The
MAX3271 and MAX3272* provide a two-chip solution
for Gigabit Ethernet and Fibre Channel receiver appli-
cations.
Applications
Gigabit Ethernet Optical Receivers
Fibre Channel Optical Receivers
System Interconnects
2.5Gbps Optical Receivers
SONET/SDH Receivers
o Single +3.3V Power Supply
o 83mW Power Consumption
o 495nA Input-Referred-Noise
o 2GHz Bandwidth
o 2mA AC Input Overload
o 30mil x 50mil Die Size
Features
Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX3271E/D
-40°C to +85°C
Dice^**
MAX3271E/W
-40°C to +85°C
Wafer^**
**_{Dice/wafers are designed to operate from -40°C to +85°C, but}
are tested and guaranteed only at T_A = +25°C.
Typical Application Circuit
+3.3V
0.1µF
C_FILTER
470pF
V_CC
750Ω
FILTER
PHOTODIODE
IN
TIA
0.1µF
OUT+
100Ω
0.1µF
OUT-
GND ^MAX3271
LIMITING
AMPLIFIER
OUT+
OUT-
MAX3272*
*Future product
________________________________________________________________ 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.