The MAX3744/MAX3745 transimpedance amplifiers provide
a compact, low-power solution for communication
up to 2.7Gbps. They feature 330nA input-referred noise
at 2.1GHz bandwidth (BW) with 0.85pF input capacitance.
The parts also have >2mAP-P AC input overload.
Both parts operate from a single +3.3V supply and consume
93mW. The MAX3744/MAX3745 are in a compact
30-mil x 50-mil die and require no external compensation
capacitor. A space-saving filter connection is provided
for positive bias to the photodiode through an
on-chip 580Ω resistor to VCC. These features allow
easy assembly into a low-cost TO-46 or TO-56 header
with a photodiode.
The MAX3744 and MAX3748A receiver chip set provides
an RSSI output using a Maxim-proprietary* interface
technique. The MAX3744 preamplifier, MAX3748A
postamplifier, and DS1858/DS1859 SFP controller meet
all the SFF-8472 digital diagnostic requirements.
Key Features
Applications/Uses
Up to 2.7Gbps (NRZ) Data Rates
RSSI Implementation in 4-Pin TO-46 Header
(MAX3744)
10psP-P Deterministic Jitter for <100µAP-P Input
Current
330nARMS Input-Referred Noise at 2.1GHz
Bandwidth
28mA Supply Current at +3.3V
2GHz Small-Signal Bandwidth
2.0mAP-P AC Overload
Die Size: 30 mils x 50 mils
Optimized for Small-Form-Factor Pluggable (SFP) Optical Receivers
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