參數(shù)資料
型號(hào)： 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(yè)數(shù)： 16/18頁(yè)
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
ENVELOPE DELAY DISTORTION WITH FREQUENCY
D
XR
Tx Delay, Relative to DXA
f = 500 Hz–600 Hz
f = 600 Hz–800 Hz
f = 800 Hz–1000 Hz
f = 1000 Hz–1600 Hz
f = 1600 Hz–2600 Hz
f = 2600 Hz–2800 Hz
f = 2800 Hz–3000 Hz
D
RA
Rx Delay, Absolute
f = 1600 Hz
D
RR
Rx Delay, Relative to DRA
f = 500 Hz–1000 Hz
f = 1000 Hz–1600 Hz
f = 1600 Hz–2600 Hz
f = 2600 Hz–2800 Hz
f = 2800 Hz–3000 Hz
NOISE
N
XC
Transmit Noise, C Message
(Note 15) 11111111
Weighted, μ-Law Selected
in Gain Register
N
XP
Transmit Noise, P Message
(Note 15) 11111111
Weighted, A-Law Selected
in Gain Register
N
RC
Receive Noise, C Message
PCM Code is Alternating Positive
Weighted, μ-Law Selected
N
RP
Receive Noise, P Message
PCM Code Equals Positive Zero
Weighted, A-Law Selected
N
RS
Noise, Single Frequency
f = 0 kHz to 100 kHz, Loop Around
Measurement, VF
X
I = 0 Vrms
PPSR
X
Positive Power Supply
V
CC
= 5.0 V
DC
+ 100 mVrms
Rejection, Transmit
f = 0 kHz–4 kHz (Note 16)
f = 4 kHz–50 kHz
NPSR
X
Negative Power Supply
V
BB
= 5.0 V
DC
+100 mVrms
Rejection, Transmit
f = 0 kHz–4 kHz (Note 16)
f = 4 kHz–50 kHz
PPSR
R
Positive Power Supply
PCM Code Equals Positive Zero
Rejection, Receive
V
CC
= 5.0 V
DC
+ 100 mVrms
Measure VF
R
O
f = 0 Hz–4000 Hz
f = 4 kHz–25 kHz
f = 25 kHz–50 kHz
NPSR
R
Negative Power Supply
PCM Code Equals Positive Zero
Rejection, Receive
V
BB
= 5.0 V
DC
+ 100 mVrms
Measure VF
R
O
f = 0 Hz–4000 Hz
f = 4 kHz–25 kHz
f = 25 kHz–50 kHz
Min
Typ
Max
Units
220
145
75
40
75
105
155
200
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
40
30
90
125
175
12
15
dBrnC0
74
67
dBm0p
8
11
dBrnC0
82
79
dBm0p
53
dBm0
36
30
dBC
dBC
36
30
dBC
dBC
36
40
36
dBC
dB
dB
36
40
36
dBC
dB
dB
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