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參數(shù)資料
| 型號： | TP3076J |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 編解碼器 |
| 英文描述： | COMBO II Programmable PCM CODEC/Filter for ISDN and Digital Phone Applications |
| 中文描述： | A/MU-LAW, PROGRAMMABLE CODEC, CDIP20 |
| 封裝： | CERAMIC, DIP-20 |
| 文件頁數(shù)： | 17/18頁 |
| 文件大?。?/td> | 222K |
| 代理商： | TP3076J |
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
NOISE
SOS
Spurous Out-of-Band
0 dBm0 300 Hz to 3400 Hz Input PCM Code
Signals Applied at the
at D
R
1
Channel Output
4600 Hz–7600 Hz
7600 Hz–8400 Hz
8400 Hz–50,000 Hz
DISTORTION
STD
X
Signal to Total Distortion
Sinusoidal Test Method
STD
R
Transmit or Receive
Level = 3.0 dBm0
Half-Channel, μ-Law
= 0 dBm0 to 30 dBm0
Selected
= 40 dBm0
= 45 dBm0
STD
RL
Single to Total Distortion
Sinusoidal Test Method
Receive with Resistive
Level = +3.1 dBm0
Load
R
L
= 600
, G
R
= 0.5 dB
R
L
= 300
, G
R
= 1.2 dB
SFD
X
Single Frequency
Distortion, Transmit
SFD
R
Single Frequency
Distortion, Receive
IMD
Intermodulation Distortion
Transmit or Receive
Two Frequencies in the Range
300 Hz–3400 Hz
CROSSTALK
CT
X-R
Transmit to Receive Crosstalk,
f = 300 Hz–3400 Hz
0 dBm0 Transmit Level
D
R
= Idle Code
CT
R-X
Receive to Transmit Crosstalk,
f = 300 Hz–3400 Hz
0 dBm0 Receive Level
(Note 16)
Min
Typ
Max
Units
30
40
30
dB
dB
dB
33
36
30
25
dBC
dBC
dBC
dBC
33
33
dBC
dBC
dB
46
46
dB
41
dB
90
75
dB
90
70
dB
Note 15:
Measured by grounded input at V
FXI
.
Note 16:
PPSR
X
, NPSR
X
, and CT
R-X
are measured with a 50 dBm0 activation signal applied to VF
X
I.
Note 17:
A signal is Valid if it is above V
IH
or below V
IL
and Invalid if it is between V
IL
and V
IH
. For the purposes of this specification the following conditions apply:
a) All input signals are defined as: V
IL
= 0.4V, V
IH
= 2.7V, t
R
<
10 ns, t
F
<
10 ns.
b) t
R
is measured from V
IL
to V
IH
. t
F
is measured from V
IH
to V
IL
.
c) Delay Times are measured from the input signal Valid to the output signal Valid.
d) Setup Times are measured from the data input Valid to the clock input Invalid.
e) Hold Times are measured from the clock signal Valid to the data input Invalid.
f) Pulse widths are measured from V
IL
to V
IL
or from V
IH
to V
IH
.
Note 18:
A multi-tone test technique is used.
www.national.com
17
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