參數(shù)資料
型號： MC145502FN
廠商： MOTOROLA INC
元件分類： 編解碼器
英文描述： PCM Codec-Filter Mono-Circuit
中文描述： A/MU-LAW, PCM CODEC, PQCC28
封裝： PLASTIC, LCC-28
文件頁數(shù)： 5/28頁
文件大?。?/td> 539K
代理商： MC145502FN
MC145500
MC145501
MC145502
MC145503
MC145505
MOTOROLA
5
ANALOG TRANSMISSION PERFORMANCE
(VDD = + 5 V
±
5%, VSS = – 5 V
±
5%, VLS = VAG = 0 V, Vref = RSI = VSS (Internal 3.15 V Reference), 0 dBm0 = 1.546 Vrms = + 6 dBm @
600
, TA = – 40 to + 85
°
C, TDC = RDC = CC = 2.048 MHz, TDE = RCE = MSI = 8 kHz, Unless Otherwise Noted)
Characteristic
End–to–End
A/D
D/A
Min
Max
Min
Max
Min
Max
Unit
Absolute Gain (0 dBm0 @ 1.02 kHz, TA = 25
°
C, VDD = 5 V, VSS = – 5 V)
Absolute Gain Variation with Temperature 0 to + 70
°
C
—
—
– 0.30
+ 0.30
– 0.30
+ 0.30
dB
—
—
—
±
0.03
—
±
0.03
dB
Absolute Gain Variation with Temperature – 40 to +85
°
C
—
—
—
±
0.1
—
±
0.1
dB
Absolute Gain Variation with Power Supply (VDD = 5 V, VSS = – 5 V, 5%)
Gain vs Level Tone (Relative to – 10 dBm0, 1.02 kHz)
—
—
—
±
0.02
—
±
0.02
dB
+ 3 to – 40 dBm0
– 40 to – 50 dBm0
– 50 to – 55 dBm0
– 0.4
– 0.8
– 1.6
+ 0.4
+ 0.8
+ 1.6
– 0.2
– 0.4
– 0.8
+ 0.2
+ 0.4
+ 0.8
– 0.2
– 0.4
– 0.8
+ 0.2
+ 0.4
+ 0.8
dB
Gain vs Level Pseudo Noise (A–Law Relative to – 10 dBm0)
CCITT G.714
– 10 to – 40 dBm0
– 40 to – 50 dBm0
– 50 to – 55 dBm0
—
—
—
—
—
—
– 0.25
– 0.30
– 0.45
+ 0.25
+ 0.30
+ 0.45
– 0.25
– 0.30
– 0.45
+ 0.25
+ 0.30
+ 0.45
dB
Total Distortion – 1.02 kHz Tone (C–Message)
0 to – 30 dBm0
– 40 dBm0
– 45 dBm0
35
29
24
—
—
—
36
29
24
—
—
—
36
30
25
—
—
—
dBC
Total Distortion With Pseudo Noise (A–Law)
CCITT G.714
– 3 dBm0
– 6 to – 27 dBm0
– 34 dBm0
– 40 dBm0
– 55 dBm0
27.5
35
33.1
28.2
13.2
—
—
—
—
—
28
35.5
33.5
28.5
13.5
—
—
—
—
—
28.5
36
34.2
30.0
15.0
—
—
—
—
—
dB
Idle Channel Noise (For End–End and A/D, See Note 1)
Mu–Law, C–Message Weighted
A–Law, Psophometric Weighted
—
—
15
– 69
—
—
15
– 69
—
—
9
– 78
dBrnC0
dBm0p
Frequency Response (Relative to 1.02 kHz @ 0 dBm0)
15 to 60 Hz
300 to 3000 Hz
3400 Hz
4000 Hz
≥
4600 Hz
—
– 0.3
– 1.6
—
—
– 23
+ 0.3
0
– 28
– 60
—
– 0.15
– 0.8
—
—
– 23
+ 0.15
0
– 14
– 32
—
– 0.15
– 0.8
—
—
0.15
+ 0.15
0
– 14
– 30
dB
Inband Spurious (1.02 kHz @ 0 dBm0, Transmit and RxO)
300 to 3000 Hz
—
—
—
– 43
—
– 43
dBm0
Out–of–Band Spurious at RxO (300 – 3400 Hz @ 0 dBm0 In)
4600 to 7600 Hz
7600 to 8400 Hz
8400 to 100,000 Hz
—
—
—
– 30
– 40
– 30
—
—
—
—
—
—
—
—
—
– 30
– 40
– 30
dB
Idle Channel Noise Selective @ 8 kHz, Input = VAG, 30 Hz Bandwidth
Absolute Delay @ 1600 Hz (TDC = 2.048 MHz, TDE = 8 kHz)
—
– 70
—
—
—
– 70
dBm0
—
—
—
310
—
180
μ
s
Group Delay Referenced to 1600 Hz (TDC = 2048 kHz,
TDE = 8 kHz)
500 to 600 Hz
600 to 800 Hz
800 to 1000 Hz
1000 to 1600 Hz
1600 to 2600 Hz
2600 to 2800 Hz
2800 to 3000 Hz
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
200
140
70
40
75
110
170
– 40
– 40
– 30
– 20
—
—
—
—
—
—
—
90
120
160
μ
s
Crosstalk of 1020 Hz @ 0 dBm0 From A/D or D/A (Note 2)
—
—
—
– 75
—
– 80
dB
Intermodulation Distortion of Two Frequencies of Amplitudes – 4 to
– 21 dBm0 from the Range 300 to 3400 Hz
—
—
—
– 41
—
– 41
dB
NOTES:
1. Extrapolated from a 1020 Hz @ – 50 dBm0 distortion measurement to correct for encoder enhancement.
2. Selectively measured while the A/D is stimulated with 2667 Hz @ – 50 dBm0.
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