1 Chip CODEC for Digital Answering phone
KS8620
TRANSMISSION CHARACTERISTICS ( Continued )
Characteristic
System
Test Conditions
Min
Typ
Max
Unit
dB
Absolute trasmit gain
variations with temperature
Transmit gain
D GV(ATX) Ta = 0oCto 70oC
/D T
+ 0.1
D GV(TXL) Sinusoldal test method ;
Reference level = -10dBm0
VFXI + = -40dBm0 to +3dB0
VFXI + = -50dBm0 to -40dB0
variations with level
0.4
0.8
-0.4
-0.8
dB
Envelope Delay Distortion with Frequency
Receive Delay, Absolute
Receive Delay, Relative to
tD (ARX)
tD(ARX)
tD(RRX)
f = 1600Hz
200
ms
ms
f = 500Hz - 1000Hz
f = 1000Hz - 1600Hz
f = 1600Hz - 2600Hz
f = 2600Hz - 2800Hz
f = 2800Hz - 3000Hz
f = 1600Hz
-40
-30
90
125
175
315
220
145
75
Transmit Delay, Absolute
tD(ATX)
ms
ms
Transmit Delay, Relative to tD(RTX)
tD(ATX)
f = 500Hz - 600Hz
f = 600Hz - 800Hz
f = 800Hz - 1000Hz
f = 1000Hz - 1600Hz
f = 1600Hz - 2600Hz
f = 2600Hz - 2800Hz
f = 2800Hz - 3000Hz
40
75
105
155
Noise
Receive Noise,
NRXC
PCM code equals alternating
positive and negative zero, KS8620
KS8620
18
15
dBrnC0
dBrnC0
C Message Weighted
Transmit Noise,
NTXC
C Message Weighted
SAMSUNG [ SAMSUNG ]
