msm7557 Oki Semiconductor, msm7557 Datasheet - Page 17

• Manufacturer Part Number: msm7557
• Description: Single Chip Msk Modem With Compandor For Cordless Telephone
• Manufacturer: Oki Semiconductor

¡ Semiconductor
OPERATION DESCRIPTION
Limiter Circuit
2. In case of using external voltage reference
DYN = "0"
DYN = "1"
LIM pin shall be supplied over VSG voltage.
Notes
LIM
HPF1 or PRE – EMPHASIS
: Clamp level = VSG 0.50 V
: Clamp level = VSG 1.26 V
1 ) R11 is protection resister from external extra voltage.
2 ) Resistor value of R11 and R12 changes 0.7 to 1.3 times from the typical value
by lot variation and temperature variation.
R11
R12
+
–
Reverse
A
Limiter
R11 : 1 kW
R12 : 200 kW
Splatter filter
MSM7557
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