MC145554 Datasheet, PDF (8/20 Pages) Motorola, Inc – PCM Codec-Filter

ANALOG TRANSMISSION PERFORMANCE
(VCC = + 5 V ± 5%, VBB = – 5 V ± 5%, GNDA = 0 V, 0 dBm0 = 1.2276 Vrms = + 4 dBm @ 600 Ω, FSX = FSR = 8 kHz,
BCLKX = MCLKX = 2.048 MHz Synchronous Operation, VFXI – Connected to GSX, TA = – 40 to + 85°C Unless Otherwise Noted)
End–to–End
A/D
D/A
Characteristic
Min Max Min Max Min Max Unit
Absolute Gain (0 dBm0 @ 1.02 kHz, TA = 25°C, VCC = 5 V, VBB = – 5 V)
—
Absolute Gain Variation with Temperature
0 to 70°C —
– 40 to + 85°C —
— – 0.25 – 0.25 – 0.25 + 0.25 dB
—
— ± 0.03 — ± 0.03 dB
—
— ± 0.06 — ± 0.06
Absolute Gain Variation with Power Supply (VCC = 5 V, ± 5%,
VBB = – 5 V, ± 5%)
—
—
— ± 0.02 — ± 0.02 dB
Gain vs Level Tone (Relative to – 10 dBm0, 1.02 kHz) + 3 to – 40 dBm0 – 0.4 + 0.4 – 0.2 + 0.2 – 0.2 + 0.2 dB
– 40 to – 50 dBm0 – 0.8 + 0.8 – 0.4 + 0.4 – 0.4 + 0.4
– 50 to – 55 dBm0 – 1.6 + 1.6 – 0.8 + 0.8 – 0.8 + 0.8
Gain vs Level Pseudo Noise CCITT G.712
(MC145557/67 A–Law Relative to – 10 dBm0)
– 10 to – 40 dBm0 —
– 40 to – 50 dBm0 —
– 50 to – 55 dBm0 —
— – 0.25 + 0.25 – 0.25 + 0.25 dB
— – 0.30 + 0.30 – 0.30 + 0.30
— – 0.45 + 0.45 – 0.45 + 0.45
Total Distortion, 1.02 kHz Tone (C–Message)
+ 3 dBm0 33
—
33
—
33
—
dBC
0 to – 30 dBm0 35
—
36
—
36
—
– 40 dBm0 29
—
30
—
30
—
– 45 dBm0 24
—
25
—
25
—
– 55 dBm0 15
—
15
—
15
—
Total Distortion With Pseudo Noise CCITT G.714
(MC145557/67 A–Law)
– 3 dBm0 27.5 —
28
—
28.5
—
dB
– 6 to – 27 dBm0 35
— 35.5 —
36
—
– 34 dBm0 33.1
—
33.5
—
34.2
—
– 40 dBm0 28.2 — 28.5 —
30
—
– 55 dBm0 13.2 — 13.5 —
15
—
Idle Channel Noise (For End–End and A/D, Note 1)
(MC145554/64 Mu–Law, C–Message Weighted)
(MC145557/67 A–Law, Psophometric Weighted)
—
15
—
15
—
7 dBrnC0
— – 70 — – 70 — – 83 dBm0p
Frequency Response (Relative to 1.02 kHz @ 0 dBm0)
15 Hz — – 40 — – 40 – 0.15 0
dB
50 Hz — – 30 — – 30 – 0.15 0
60 Hz — – 26 — – 26 – 0.15 0
200 Hz —
— – 1.0 – 0.4 – 0.15 0
300 to 3000 Hz – 0.3 0.3 – 0.15 + 0.15 – 0.15 + 0.15
3300 Hz – 0.70 + 0.3 – 0.35 + 0.15 – 0.35 + 0.15
3400 Hz – 1.6
0
– 0.8
0
– 0.8
0
4000 Hz — – 28 — – 14 — – 14
4600 Hz — – 60 — – 32 — – 30
In–Band Spurious
(1.02 kHz @ 0 dBm0, Transmit and Receive)
300 to 3000 Hz — – 48 — – 48 — – 48 dBm0
Out–of–Band Spurious at VFRO (300 – 3400 Hz @ 0 dBm0 In)
dB
4600 to 7600 Hz — – 30 —
—
— – 30
7600 to 8400 Hz — – 40 —
—
— – 40
8400 to 100,000 Hz — – 30 —
—
— – 30
Idle Channel Noise Selective (8 kHz, Input = GNDA, 30 Hz Bandwidth)
— – 70 —
—
— – 70 dBm0
Absolute Delay (1600 Hz)
—
—
—
315
—
215
µs
Group Delay Referenced to 1600 Hz
500 to 600 Hz —
—
—
220 – 40
—
µs
600 to 800 Hz —
—
—
145 – 40
—
800 to 1000 Hz —
—
—
75 – 40 —
1000 to 1600 Hz —
—
—
40 – 30 —
1600 to 2600 Hz —
—
—
75
—
90
2600 to 2800 Hz —
—
—
105
—
125
2800 to 3000 Hz —
—
—
155
—
175
Crosstalk of 1020 Hz @ 0 dBm0 from A/D or D/A (Note 2)
—
—
—
– 75
—
– 75
dB
Intermodulation Distortion of Two Frequencies of Amplitudes
– 4 to – 21 dBm0 from the Range 300 to 3400 Hz
— – 41 —
– 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.
MC145554•MC145557•MC145564•MC145567
8
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