MC145484 Просмотр технического описания (PDF) - Motorola => Freescale

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MC145484

5V PCM Codec-Filter

Motorola => Freescale 

ANALOG TRANSMISSION PERFORMANCE

(VDD = + 5 V ± 10%, VSS = 0 V, All Analog Signals Referenced to VAG, 0 dBm0 = 0.775 Vrms = + 0 dBm @ 600 Ω, FST = FSR = 8 kHz,

BCLKT = MCLK = 2.048 MHz Synchronous Operation, TA = – 40 to + 85°C, Unless Otherwise Noted)

A/D

D/A

Characteristics

Min Typ Max Min Typ Max Units

Peak Single Frequency Tone Amplitude without Clipping

Tmax — 1.575 —

— 1.575 —

Vpk

Absolute Gain (0 dBm0 @ 1.02 kHz, TA = 25°C, VDD = 5.0 V)

– 0.25 — + 0.25 – 0.25 — + 0.25 dB

Absolute Gain Variation with Temperature

(Referenced to 25°C)

0 to + 70°C —

– 40 to + 85°C —

— ± 0.03 —

— ± 0.05 —

— ± 0.03 dB

— ± 0.05

Absolute Gain Variation with Power Supply (TA = 25°C)

—

— ± 0.03 —

— ± 0.03 dB

Gain vs Level Tone (Mu–Law, Relative to – 10 dBm0, 1.02 kHz)

+ 3 to – 40 dBm0 – 0.30 — + 0.20 – 0.20 — + 0.20 dB

– 40 to – 50 dBm0 – 0.8 — + 0.40 – 0.40 — + 0.40

– 50 to – 55 dBm0 – 1.2 — + 0.80 – 0.80 — + 0.80

Gain vs Level Pseudo Noise, CCITT G.712

(A–Law, Relative to – 10 dBm0)

– 10 to – 40 dBm0 – 0.25 — + 0.25 – 0.25 — + 0.25 dB

– 40 to – 50 dBm0 – 0.60 — + 0.30 – 0.30 — + 0.30

– 50 to – 55 dBm0 – 1.00 — + 0.45 – 0.45 — + 0.45

Total Distortion, 1.02 kHz Tone

(Mu–Law, C–Message Weighting)

+ 3 dBm0 34

—

—

34

—

—

dBC

0 to – 30 dBm0 36

—

—

36

—

—

– 40 dBm0 30

—

—

30

—

—

– 45 dBm0 25

—

—

25

—

—

Total Distortion, Pseudo Noise, CCITT G.714 (A–Law)

– 3 dBm0 30

—

—

30

—

—

dB

– 6 to – 27 dBm0 36

—

—

36

—

—

– 34 dBm0 34

—

—

35

—

—

– 40 dBm0 29

—

—

30

—

—

– 50 dBm0 19

—

—

20

—

—

– 55 dBm0 14

—

—

15

—

—

Idle Channel Noise (For End–to–End and A/D, See Note 1)

(Mu–Law, C–Message Weighted) —

(A–Law, Psophometric Weighted) —

—

17

—

— – 69 —

—

11 dBr nc0

— – 79 dBm0p

Frequency Response (Relative to 1.02 kHz @ 0 dBm0)

15 Hz —

— – 40 – 0.5 —

0

dB

50 Hz —

— – 30 – 0.5 —

0

60 Hz —

— – 26 – 0.5 —

0

165 Hz — – 3.0 — – 0.5 —

0

200 Hz – 1.0 — – 0.4 – 0.5 —

0

300 to 3000 Hz – 0.20 — + 0.15 – 0.15 — + 0.15

3000 to 3200 Hz – 0.20 — + 0.20 – 0.20 — + 0.20

3300 Hz – 0.35 — + 0.15 – 0.35 — + 0.15

3400 Hz – 0.8 —

0 – 0.85 —

0

3600 Hz — – 3.0 —

— – 3.0 —

4000 Hz —

— – 14 —

— – 14

4600 Hz to 100 kHz —

— – 32 —

—

30

In–Band Spurious (1.02 kHz @ 0 dBm0, Transmit and Receive)

300 to 3400 Hz —

— – 48 —

dB

— – 48

Out–of–Band Spurious at RO+ (300 to 3400 Hz @ 0 dBm0 in)

4600 to 7600 Hz —

—

—

—

—

– 30

dB

7600 to 8400 Hz —

—

—

—

— – 40

8400 to 100,000 Hz —

—

—

—

— – 30

Idle Channel Noise Selective (8 kHz, Input = VAG, 30 Hz Bandwidth)

Absolute Delay (1600 Hz)

—

—

—

—

— – 70 dBm0

—

—

315

—

—

205

µs

Group Delay Referenced to 1600 Hz

500 to 600 Hz —

—

210 – 40

—

—

µs

600 to 800 Hz —

—

130 – 40

—

—

800 to 1000 Hz —

—

70 – 40 —

—

1000 to 1600 Hz —

—

35 – 30 —

—

1600 to 2600 Hz —

—

70

—

—

85

2600 to 2800 Hz —

—

95

—

—

110

2800 to 3000 Hz —

—

145

—

—

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)

dB

—

— – 41 —

— – 41

NOTES:

1. Extrapolated from a 1020 Hz @ – 50 dBm0 distortion measurement to correct for encoder enhancement.

2. Selectively measured while stimulated with 2667 Hz @ – 50 dBm0.

MOTOROLA

MC145484

13

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