622Mbps, Low-Noise, High-Gain
Transimpedance Preamplifier
VCC
75Ω
75Ω
MAX3658
OUTPUT
STAGE
*COMPONENT NOT REQUIRED IF L < 5cm
Figure 6a. 50Ω AC-Coupled Interface
150Ω∗ 150Ω∗
50Ω∗
50Ω∗
L
50Ω
50Ω
0.1μF
0.1μF
DIFFERENTIAL
INPUT STAGE
VCC
150Ω∗ 50Ω
150Ω∗
75Ω
75Ω
50Ω
50Ω∗
L
MAX3658
OUTPUT
STAGE
NOTE: THE PARALLEL COMBINATION AT THE UNUSED OUTPUT
CAN BE REPLACED BY A SINGLE EQUIVALENT 37.5Ω RESISTOR.
*COMPONENT NOT REQUIRED IF L < 5cm
Figure 6b. 50Ω DC-Coupled Single-Ended Output Interface
SINGLE-ENDED
INPUT STAGE
10 ______________________________________________________________________________________