參數(shù)資料
型號(hào): IDT821024PP
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 編解碼器
英文描述: QUAD NON-PROGRAMMABLE PCM CODEC
中文描述: A/MU-LAW, PCM CODEC, PQFP44
封裝: TQFP-44
文件頁(yè)數(shù): 8/13頁(yè)
文件大小: 247K
代理商: IDT821024PP
8
INDUSTRIAL TEMPERATURE RANGE
IDT821024 QUAD NON-PROGRAMMABLE PCM CODEC
TRANSMISSION CHARACTERISTICS
0dBm0 is defined as 0.6832Vrms for A-law and 0.6778 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 value are tested at V
DD
= 5V and T
A
= 25
°
C.
Absolute Gain
Gain Tracking
Frequency Response
Group Delay
Note*: Minimum value in transmit and receive path.
Parameter
G
XA
Description
Min
-0.25
-0.35
-0.25
-0.35
Typ
Max
0.25
0.35
0.25
0.35
Units
dB
dB
dB
dB
Test Conditions
Transmit Gain, Absolute
0°C to 85°C
-40°C
Receive Gain, Absolute
0°C to 85°C
-40°C
Signal input of 0 dBm0,
μ
-law or A-law
G
RA
Measured relative to 0 dBm0,
μ
-law or A-law, PCM input of 0
dBm0 1020 Hz , R
L
= 10 k
Parameter
GT
X
Description
Min
-0.10
-0.25
-0.50
-0.10
-0.25
-0.50
Typ
Max
0.10
0.50
0.50
0.10
0.50
0.50
Units
dB
dB
dB
dB
dB
dB
Test Conditions
Transmit Gain Tracking
+3 dBm0 to –40 dBm0
-40 dBm0 to -50 dBm0
-50 dBm0 to -55 dBm0
Receive Gain Tracking
+3 dBm0 to –40 dBm0
-40 dBm0 to -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
Typ
Max
-40
-40
0.15
-0.1
-35
0
0.15
-0.2
-35
Units
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 to 3400 Hz
f = 3600 Hz
f = 4600 Hz and above
Receive Gain, Relative to G
RA
f below 300 Hz
f = 300 Hz to 3400 Hz
f = 3600 Hz
f = 4600 Hz and above
-0.15
G
RR
-0.15
Parameter
D
XA
D
XR
Description
Min
Typ
Max
340
Units
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
μ
s
Test Conditions
Transmit Delay, Absolute *
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, Absolute *
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
260
D
RA
D
RR
50
80
120
150
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