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MT8960AE

Integrated PCM Filter Codec

Mitel Networks 

MT8960/61/62/63/64/65/66/67 ISO2-CMOS

Transmit (A/D) Path (cont’d)

Characteristics

Sym Min Typ* Max Units

Test Conditions

Quantization

Distortion

(cont’d)

(See Figure 13)

CCITT G712

(Method 2)

AT&T

DQX2

35.30

29.30

24.30

Sinusoidal Input Level:

dB 0 to -30 dBm0

dB -40 dBm0

dB -45 dBm0

7

Idle Channel

C-message

NCX

Noise

Psophometric NPX

8 Single Frequency Noise

NSFX

9 Harmonic Distortion

(2nd or 3rd Harmonic)

18 dBrnC0 µ-Law Only

-67 dBm0p CCITT G712

-56 dBm0 CCITT G712

-46

dB Input Signal:

0 dBm0 @ 1.02 kHz

10 Envelope Delay

DAX

11 Envelope Delay 1000-2600 Hz DDX

Variation With 600-3000 Hz

Frequency

400-3200 Hz

270

60

150

250

µs @ 1004 Hz

µs Input Signal:

µs 400-3200 Hz Sinewave

µs at 0 dBm0

12 Intermodulation

Distortion

A

N

A

L

O

G

CCITT G712

50/60 Hz

CCITT G712

2 tone

AT&T

4 tone

13 Gain Relative to ≤50 Hz

Gain @ 1004 Hz 60 Hz

(See Figure 10) 200 Hz

300-3000 Hz

3200 Hz

3300 Hz

3400 Hz

4000 Hz

≥4600 Hz

IMDX1

IMDX2

IMDX3

IMDX4

GRX

-1.8

-0.125

-0.275

-0.350

-0.80

-55

-41

-47

-49

-25

-30

0.00

0.125

0.125

0.030

-0.100

-14

-32

dB 50/60 Hz @ -23 dBm0

and any signal within

300-3400 Hz at -9 dBm0

dB 740 Hz and 1255 Hz

@ -4 to -21 dBm0.

Equal Input Levels

dB 2nd order products

dB 3rd order products

dB 0 dBm0 Input Signal

dB

dB Transmit

dB Filter

dB Response

dB

dB

dB

dB

14 Crosstalk D/A to A/D

CTRT

-70

dB 0 dBm0 @ 1.02 kHz

in D/A

15 Power Supply

Rejection

VDD PSSR1 33

VEE PSSR2 35

dB Input 50 mVRMS at

dB 1.02 kHz

16 Overload Distortion (See Fig.15)

Input frequency=1.02kHz

* Typical figures are at 25°C with nominal ±5V supplies. For design aid only: not guaranteed and not subject to production testing.

Note 6:

0dBm0=1.185 VRMS for the µ-Law codec.

0dBm0=1.231 VRMS for the A-Law codec.

6-32

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