PSF21150 INFINEON [Infineon Technologies AG], PSF21150 Datasheet - Page 61

• Manufacturer Part Number: PSF21150
• Description: IPAC-X ISDN PC ADAPTER CIRCUIT
• Manufacturer: INFINEON [Infineon Technologies AG]

3.3.5
The full-bauded pseudo-ternary pulse shaping is achieved with the integrated transmitter
which is realized as a symmetrical current limited voltage source (V
I
The nominal pulse amplitude on the S-interface 750 mV (zero-peak) is adjusted with
external resistors (see
Figure 29
Data Sheet
max
VCM+0.525V
VCM
VCM-0.525V
VCM-0.525V
VCM
VCM+0.525V
= 26 mA). The equivalent circuit of the transmitter is shown in
Transmitter Characteristics
Equivalent Internal Circuit of the Transmitter Stage
'+0'
'+0'
'-0'
'-0'
'1'
'1'
Level
Chapter
3.3.7.1).
+
+
-
-
VCM
V=1
V=1
TR_CONF2.DIS_TX
61
Description of Functional Blocks
Figure
SX1/SX2
'+0' '1' '-0'
29.
PSB 21150
PSF 21150
SX1
SX2
2000-07-21
= +/-1.0V;
21150_28