參數(shù)資料
型號： IDT821064PQF
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 編解碼器
英文描述： QUAD PROGRAMMABLE PCM CODEC WITH GCI INTERFACE
中文描述： A/MU-LAW, PROGRAMMABLE CODEC, PQFP64
封裝： PLASTIC, QFP-64
文件頁數(shù)： 27/33頁
文件大?。?/td> 510K
代理商： IDT821064PQF
27
INDUSTRIAL TEMPERATURE RANGE
IDT821064 QUAD PROGRAMMABLE PCM CODEC WITH GCI INTERFACE
TRANSMISSION CHARACTERISTICS
0 dBm0 is defined as 0.775 Vrms for A-law and 0.769 Vrms for
μ
-law, both for 600
load. Unless otherwise noted, the analog input is a 0 dBm0,
1020 Hz sine wave; the input amplifier is set for unity gain. The digital input is a PCM bit stream equivalent to that obtained by passing a 0 dBm0,
1020 Hz sine wave through an ideal encoder. The output level is sin(x)/x-corrected. Typical values are for V
DD
= 5V and T
A
=25
°
C.
Absolute Gain
Gain Tracking
Frequency Response
Group Delay
Parameter
G
XA
Description
Min
-0.25
Typ
Max
0.25
Units
dB
Test Conditions
Transmit Gain, Absolute
Signal input of 0 dBm0,
μ
-law or A-law
Measured relative to 0 dBm0,
μ
-law or A-law, PCM input of
0 dBm0 1020 Hz , R
L
= 10 k
G
RA
Receive Gain, Absolute
-0.25
0.25
dB
Parameter
GT
X
Description
Min
-0.25
-0.5
-1.4
-0.10
-0.25
-0.50
Typ
Max
0.25
0.50
1.4
0.10
0.50
0.50
Units
dB
dB
dB
dB
dB
dB
Test Conditions
Transmit Gain Tracking
+3 dBm0 to –37 dBm0 (exclude –37 dBm0)
-37 dBm0 to -50 dBm0 (exclude –50 dBm0)
-50 dBm0 to -55 dBm0
Receive Gain Tracking
+3 dBm0 to - 40 dBm0 (exclude –40 dBm0)
-40 dBm0 to -50 dBm0 (exclude –50 dBm0)
-50 dBm0 to -55 dBm0
Tested by Sinusoidal Method,
μ
-law/A-law
GT
R
Tested by Sinusoidal Method,
μ
-law/A-law
Parameter
G
XR
Description
Min
-0.10
-0.15
-0.60
Typ
Max
-30
-30
0.20
0.15
0.15
-0.10
-35
0
0.15
0.15
-0.20
-35
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Test Conditions
Transmit Gain, relative to G
XA
f = 50 Hz
f = 60 Hz
f = 300 Hz
f = 300 Hz to 3000 Hz (exclude 3000 Hz)
f = 3000 Hz to 3400 Hz
f = 3600 Hz
f
≥
4600 Hz
Receive Gain, relative to G
RA
f < 300 Hz
f = 300 Hz to 3000 Hz (exclude 3000 Hz)
f = 3000 Hz to 3400 Hz
f = 3600 Hz
f
≥
4600 Hz
The High-pass filter is enabled.
G
RR
-0.15
-0.60
Parameter
D
XR
Description
Min
Typ
Max
Units
Test Conditions
Transmit Delay, Relative to 1800 Hz
f = 500 Hz – 600 Hz
f = 600 Hz –1000 Hz
f = 1000 Hz – 2600 Hz
f = 2600 Hz – 2800 Hz
Receive Delay, Relative to 1800 Hz
f = 500 Hz – 600 Hz
f = 600 Hz –1000 Hz
f = 1000 Hz – 2600 Hz
f = 2600 Hz – 2800 Hz
280
150
80
280
μ
s
μ
s
μ
s
μ
s
D
RR
50
80
120
150
μ
s
μ
s
μ
s
μ
s
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