LG1626DXC データシートの表示（PDF） - Agere -> LSI Corporation
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LG1626DXC Datasheet PDF : 10 Pages
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Data Sheet
February 1999
Electrical Characteristics (continued)
LG1626DXC Modulator Driver
VSS = –5.2 V
10 Ω
0.1 µF
2.5 kΩ*
VTH
DATA
IN
0.047 µF
VIN
+
50 Ω
Zo = 50 Ω
0.047 µF
50 Ω
0.1 µF
DATA
GENERATOR
2.5 kΩ
10 Ω
24 23 22 21 20 19
1
18
2
17
LG1626DXC
3
16
MODULATOR
4
DRIVER
15
5
14
6
13
7 8 9 10 11 12
BG2P5
LM4040
MOD_E
VSS = –5.2 V
MK MK
10 Ω
8
7
dc
SUPPLY
9
6
0.1 µF
VOUT-DC
VOUT
Zo = 50 Ω
100 µH
10
5
E2500
10 µH
EM-ILM
11
4
+2 V
0.047 µF
INPUT
MAX
12
3
Zo = 50 Ω
10 µH
13
2
DMM
14
1
50 Ω
5-6554(F).b
*A 2.5 kΩ resistor will set the eye crossing at 50%. A 5 kΩ potentiometer will allow the eye crossing to be varied.
Notes:
All bypass caps should be mounted close to the package.
ISS3 can be measured and used to control VMOD.
ISS2 can be measured and used to control VOUT-DC.
For optimal performance, the proximity of the two components should be minimized and the package bottom must be soldered to the circuit
board (GND).
For proper impedance matching, high-speed transmission lines should be 50 Ω controlled impedance lines.
Figure 5. Typical Optical Evaluation of the LG1626DXC and EM2500 EM-ILM
Lucent Technologies Inc.
7
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