ADN2880 Просмотр технического описания (PDF) - Analog Devices
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ADN2880 Datasheet PDF : 12 Pages
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ADN2880
PIN Photodiode for a Non-SDH/SONET Application
RSSI
VCC
SC
OUTB
CB
OUT
RSSI
VCC
SC
OUTB
CB
OUT
Figure 22. Coplanar PIN and RSSI Layout for a 5-Pin TO-46
VCC B.W.
CB
B.W.
B.W.
VCCFILTER VCC
B.W.
FILTER
B.W. IN
200Ω
50Ω 50Ω
B.W.
B.W.
OUT
OUTB
20pF
0.85V
B.W.
RSSI
GND
B.W.
GND CAP
B.W.
Figure 23. Equivalent Circuit with Bond Wires, as Shown in Figure 22
Figure 24. Dual Planar PIN and RSSI Layout for a 5-Pin TO-46
ADN2880
PD SC
CB
Figure 25. Side View of the Assembly, as Shown in Figure 22
Table 5. Bill of Materials (BOM)
Component Description
PD
1× vendor specific, 2.5 Gbps, photodiode
TIA
1× ADN2880 (0.7 mm × 1.2 mm), 3.2 Gbps,
transimpedance amplifier
CB
1× 200 pF, RF single-layer capacitor
Sc
1× ceramic standoff or 1× optional capacitor
Notes
One mil thickness, gold wire, ball bond recommended.
Minimize all GND bond-wire lengths.
Minimize IN, FILTER, OUT, and OUTB bond-wire lengths.
Maintain symmetry in length and orientation between OUT
and OUTB bond wires.
Maintain symmetry in length and orientation between IN and
FILTER bond wires.
Maintain symmetry between IN/FILTER and OUT/OUTB
bond wires.
Rev. 0 | Page 10 of 12
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