PEB4265TV12NT Infineon Technologies, PEB4265TV12NT Datasheet - Page 128
PEB4265TV12NT
Manufacturer Part Number
PEB4265TV12NT
Description
Manufacturer
Infineon Technologies
Datasheet
1.PEB4265TV12NT.pdf
(383 pages)
Specifications of PEB4265TV12NT
On-hook Transmission
Yes
Polarity Reversal
Yes
On-chip Ring Relay Driver
Yes
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Pin Count
22
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant
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Preliminary
Example:
• Assumptions:
• Calculating parameter values:
Program Sequence:
• Set the following parameter values:
Parameter
Slope of ramp while testing
Ring frequency
Ring generator delay
Ring offset voltage 1
Ring offset voltage 2
Current for LM off-hook
threshold
• Integration time T
• Select the DC levelmeter by setting bits LM-SEL[3:0] in register LMCR2 to 0101
• Execute the levelmeter only once by setting bit LM-ONCE in register LMCR1 to 1.
• Apply Ring Offset voltage RO1 to Ring and Tip line by setting bits RNG-OFFSET[1:0]
• Enable the ramp generator by setting bit RAMP-EN in register LMCR2 to 1.
Data Sheet
– Capacitance as object to be determined: C
– Resistor R
–
– Choose Ring Offset voltage 1: RO1 = 70 V (Start voltage on Ring/Tip where the
– Choose Ring Offset voltage 2: RO2 = – 30 V (End voltage on Ring/Tip where the
– Choose slope of ramp while testing: dU/dt = 200 V/s
– Time from start to stop of the ramp from RO1 to RO2 is 100 V/200 V/s = 500 ms
– Time from start to zero cross is 70 V/200 V/s = 350 ms
– Choose Integration time: T
– Measure around zero cross
– T
– Check ring generator delay: T
– Expected current i = C
– Choose current for LM off-hook threshold I
in register LMCR3 to 01.
ramp should start; programmed by ring offset voltage RO1)
ramp should stop; programmed by ring offset voltage RO2)
Note: A current of 2 mA will result in LM
RING,DELAY
= R
Measure
Measure
*C
is programmed to 345 ms
Measure
I
= 1/f
in series to C
RING
= 67.9 ms
Measure
Symbol & Value
dU/dt = 200 V/s
f
T
RO1 = 70 V
RO2 = – 30 V
I
RING
LM,DC
= 1/100 Hz = 10 ms
RING,DELAY
I
= 1/f
*dU/dt = 1.96 mA
RING,DELAY
= from 345 ms to 355 ms
= 100 Hz
Measure
= 2 mA
RING
128
= 1/100 Hz = 10 ms
= 345 ms
: R
Result
Measure
> 3* = 204 ms
LM,DC
Measure
= 0.5 (half of the fullscale value)
= 2 mA
= 6930
= 9.8 µF
DuSLICOS
DC Control Parameter 3/3
DC Control Parameter 2/3
DC Control Parameter 2/3
DC Control Parameter 2/3
DC Control Parameter 2/3
DC Control Parameter 2/3
Operational Description
= OK!
2000-07-14
DuSLIC
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