psf21911 ETC-unknow, psf21911 Datasheet - Page 134

• Manufacturer Part Number: psf21911
• Description: Isdn Echocancellation Circuit Terminal Applications Iec-q
• Manufacturer: ETC-unknow

Semiconductor Group
U-transceiver Characteristics
Receive Path
Signal / (noise + total harmonic distortion)
DC-level at AD-output
Threshold of level detect
Input impedance AIN/BIN
Transmit Path
Signal / (noise + total harmonic distortion)
Output DC-level
Offset between AOUT and BOUT
Signal amplitude
Output impedance AOUT/BOUT:
Power-up
Power-down
Pin Capacitances
T
Pin
All pins
except
XIN, XOUT
XIN, XOUT
A
Note:
1) Test conditions: 1.3 Vpp antisemetric sine wave as input on AIN/BIN with long range (low, critical range).
2)
3)
4)
= 25 °C;
The signal amplitude measured over a period of 1 min. varies less than 1%.
Interpretation and test conditions: The sum of noise and total harmonic distortion,
The percentage of the “1“-values in the PDM-signal.
weighted with a low pass filter 0 to 80 kHz, is at least 65 dB below the signal for an
evenly distributed but otherwise random sequence of + 3, + 1, – 1, – 3.
V
DD
= 5 V
3)
Parameter
Pin capacitance
Pin capacitance
5 %;
V
SS
= 0 V;
f
C
= 1 MHz
1)
Symbol
C
C
2)
IO
IO
min.
60
45
4
50
65
2.05
3.10
134
min.
Limit Values
typ.
65
50
20
70
2.375
3.20
2
6
Limit Values
Electrical Characteristics
max.
7
5
max.
55
28
2.6
35.5
3.30
4
12
PSB 21911
PSF 21911
Unit
pF
pF
Unit
dB
%
mV
k
dB
dB
mV
V
4)
11.97