參數(shù)資料
型號： IDT821068PX
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 編解碼器
英文描述： OCTAL PROGRAMMABLE PCM CODEC
中文描述： A/MU-LAW, PROGRAMMABLE CODEC, PQFP128
封裝： PLASTIC, QFP-128
文件頁數(shù)： 36/45頁
文件大小： 589K
代理商： IDT821068PX
INDUSTRIAL TEMPERATURE RANGE
IDT821068 OCTAL PROGRAMMABLE PCM CODEC
36
Note: Crosstalk into the transmit channels (VIN) can be significantly affected by parasitic capacitive coupling from VOUT outputs. PCB layouts should be arranged to minimize these parasitics.
Interchannel Crosstalk
Distortion
Noise
Parameter
N
XC
N
XP
N
RC
N
RP
N
RS
Description
Min
Typ
Max
18
-68
12
-78
-53
Units
dBrnC0
dBm0p
dBrnC0
dBm0p
dBm0
Test Conditions
Transmit Noise, C Message Weighted for
μ
-law
Transmit Noise, Psophometric Weighted for A-law
Receive Noise, C Message Weighted for
μ
-law
Receive Noise, Psophometric Weighted for A-law
Noise, Single Frequency
f = 0 kHz – 100 kHz
Power Supply Rejection Transmit
f = 300 Hz – 3.4 kHz
f = 3.4 kHz – 20 kHz
Power Supply Rejection Receive
f = 300 Hz – 3.4 kHz
f = 3.4 kHz – 20 kHz
Spurious Out-of-Band Signals at VOUT Relative to
Input PCM code applied:
4600 Hz – 20 kHz
20 kHz – 50 kHz
VIN = 0 Vrms, tested at VOUT
PSR
X
40
25
dB
dB
VDD = 5.0 VDC + 100 mVrms
PSR
R
40
25
dB
dB
PCM code is positive one LSB, VDD = 5.0 VDC +
100 mVrms
SOS
-40
-30
dB
dB
0 dBm0, 300 Hz – 3400 Hz input
Parameter
Description
Min
Typ
Max
Units
Test Conditions
XT
X-R
Transmit to Receive Crosstalk
-85
-78
dB
300 Hz – 3400 Hz, 0 dBm0 signal into VIN of interfering channel.
Idle PCM code into channel under test.
300 Hz – 3400 Hz, 0 dBm0 PCM code into interfering channel. VIN
= 0 Vrms for channel under test.
300 Hz – 3400 Hz, 0 dBm0 signal into VIN of interfering channel.
VIN = 0 Vrms for channel under test.
300 Hz – 3400 Hz, 0 dBm0 PCM code into interfering channel. Idle
PCM code into channel under test.
XT
R-X
Receive to Transmit Crosstalk
-85
-80
dB
XT
X-X
Transmit to Transmit Crosstalk
-85
-78
dB
XT
R-R
Receive to Receive Crosstalk
-85
-80
dB
Parameter
STD
X
Description
Min
Typ
Max
Units
Test Conditions
Transmit Signal to Total Distortion Ratio
A-law :
Input level = 0 dBm0
Input level = -30 dBm0
Input level = -40 dBm0
Input level = -45 dBm0
μ
-law :
Input level = 0 dBm0
Input level = -30 dBm0
Input level = -40 dBm0
Input level = -45 dBm0
Receive Signal to Total Distortion Ratio
A-law :
Input level = 0 dBm0
Input level = -30 dBm0
Input level = -40 dBm0
Input level = -45 dBm0
μ
-law :
Input level = 0 dBm0
Input level = -30 dBm0
Input level = -40 dBm0
Input level = -45 dBm0
Single Frequency Distortion, Transmit
36
36
30
24
36
36
31
27
36
36
30
24
36
36
31
27
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm0
ITU-T O.132
Sine Wave Method,Psophometric Weighted for A-
law, C Message Weighted for
μ
-law.
STD
R
ITU-T O.132
Sine Wave Method,Psophometric Weighted for A
law;Sine Wave Method,C Message Weighted for
μ
-
law;
SFD
X
-42
200 Hz - 3400 Hz, 0 dBm0 input, output any other
single frequency
≤
3400 Hz
200 Hz - 3400 Hz, 0 dBm0 input, output any other
single frequency
≤
3400 Hz
Transmit or receive,two frequencies in the range
(300 Hz
3400 Hz) at
6 dBm0
SFD
R
Single Frequency Distortion, Receive
-42
dBm0
IMD
Intermodulation Distortion
-42
dBm0
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