參數(shù)資料
型號(hào)： TP3076
廠商： National Semiconductor Corporation
元件分類： Codec
英文描述： COMBO II Programmable PCM CODEC/Filter for ISDN and Digital Phone Applications
中文描述： 組合二可編程PCM編解碼器/濾波器ISDN和數(shù)字電話應(yīng)用
文件頁(yè)數(shù)： 15/18頁(yè)
文件大?。?/td> 222K
代理商： TP3076
Transmission Characteristics
(Continued)
Unless otherwise noted, limits printed in
BOLD
characters are guaranteed for V
= +5V
±
5%, V
BB
= 5V
±
5%; T
= 0C to
+70C by correlation with 100% electrical testing at T
= 25C. f = 1015.625 Hz, VF
I = 0 dBm0, D
1 = 0 dBm0 PCM code.
Transmit and receive gains programmed for maximum 0 dBm0 test levels (0 dB Gain). All other limits are assured by correla-
tion with other production tests and/or product design and characterization. All signals referenced to GND. Typicals specified
at V
CC
= +5V, V
BB
= 5V, T
A
= 25C.
Symbol
Parameter
Conditions
AMPLITUDE RESPONSE
G
XAL
Transmit Gain
Sinusoidal Test Method.
Variation with
Reference Level = 0 dBm0
Signal Level
VF
X
I = 40 dBm0 to +3 dBm0
VF
X
I = 50 dBm0 to 40 dBm0
VF
X
I = 55 dBm0 to 50 dBm0
G
RA
Receive Gain
Receive Gain Programmed for Maximum
Absolute Accuracy
0 dBm0 Test Level. Apply 0 dBm0
PCM Code to D
R
1. Measure VF
R
0.
T
A
= 25C
G
RAG
Receive Gain
T
A
= 25C, V
CC
= 5V, V
BB
= 5V
Variation with
Programmed Gain from 0 dB to 19 dB
Programmed Gain
(0 dBm0 Levels of 1.964 Vrms to 0.220 Vrms)
Programmed Gain from 19.1 dB to 25.4 dB
(0 dBm0 Levels of 0.218 Vrms to 0.105 Vrms)
Min
Typ
Max
Units
0.2
0.4
1.2
0.2
0.4
1.2
dB
dB
dB
0.15
0.15
dB
0.1
0.1
dB
0.3
0.3
dB
Note:
±
0.1 dB Min/Max is Available as a Selected Part
Measured Relative to G
RA
.
V
CC
= 5V, V
BB
= 5V.
Minimum Gain
<
G
R
<
Maximum Gain
Relative to 1015.625 Hz, (Note 18)
D
R
1 = 0 dBm0 Code.
Minimum Gain
<
G
R
<
Maximum Gain
f = 200 Hz
f = 300 Hz to 3000 Hz
f = 3400 Hz
f = 4000 Hz
G
R
= 0 dB, D
R
1 = 0 dBm0 Code,
G
X
= 0 dB (Note 18)
f = 296.875 Hz
f = 1875.00 Hz
f = 2906.25 Hz
f = 2984.375 Hz
f = 3406.250 Hz
f = 3984.375 Hz
Sinusoidal Test Method.
Reference Level = 0 dBm0.
D
R
1 = 40 dBm0 to +3 dBm0
D
R
1 = 50 dBm0 to 40 dBm0
D
R
1 = 55 dBm0 to 50 dBm0
DR
1
= 3.1 dBm0 0.5
R
L
= 600
, G
R
= 0.5 dB
R
L
= 300
, G
R
= 1.2 dB
G
RAT
Receive Gain
Variation with
Temperature
Receive Gain
Variation with
Frequency
0.1
0.1
dB
G
RAF
0.25
0.15
0.7
0.15
0.15
0.0
14
dB
dB
dB
dB
0.15
0.15
0.15
0.15
0.74
0.15
0.15
0.15
0.15
0.0
13.5
dB
dB
dB
dB
dB
dB
G
RAL
Receive Gain
Variation with
Signal Level
0.2
0.4
1.2
0.2
0.4
1.2
dB
dB
dB
0.2
0.2
0.2
0.2
dB
dB
ENVELOPE DELAY DISTORTION WITH FREQUENCY
D
XA
Tx Delay, Absolute
f = 1600 Hz
315
μs
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