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MT8960AE

Integrated PCM Filter Codec

Mitel Networks 

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

AC Electrical Characteristics (cont’d)

Characteristics

Sym Min Typ* Max Units

Test Conditions

17 D Propagation Delay

I Clock to SD Output

SD

tPCS

18 G SD Output Fall Time

SD

tSF

I

19 T SD Output Rise Time

SD

tSR

20 A Digital Loopback

L Time DSTi to DSTo

tDL

400

ns CL = 100 pF

200

ns CL = 20 pF

400 ns

122 ns

(See Figures 9a, 9b, 9c)

Note 3: The filter characteristics are totally dependent upon the accuracy of the clock frequency providing F1i is synchronized to

C2i. The A/D and D/A functions are unaffected by changes in clock frequency.

Note 4: This gives a 75 ns period, 50 ns before and 25 ns after the 50% point of C2i rising edge, when change in F1i will give an

undetermined state to to the internally synchronized enable signal.

AC Electrical Characteristics - Transmit (A/D) Path - Voltages are with respect to GNDD unless otherwise stated.

TA=0 to 70°C, VDD=5V±5%, VEE=-5V±5%, VRef=2.5V±0.5%, GNDA=GNDD=0V, Clock Frequency = 2.048MHz,

Filter Gain Setting = 0dB. Outputs unloaded unless otherwise specified.

Characteristics

Sym Min Typ* Max Units Test Conditions

1

Analog Input at VX equivalent to VIN

the overload decision level at

the codec

4.829

5.000

Level at codec:

VPP µ-Law: 3.17 dBm0

VPP A-Law: 3.14 dBm0

See Note 6

2

Absolute Gain (0dB setting)

GAX -0.25

3

Absolute Gain (+1dB to +7dB

settings)

-0.35

+0.25

+0.35

dB 0 dBm0 @ 1004 Hz

dB from nominal,

@ 1004 Hz

4

Gain Variation With Temp

GAXT

A

With Supplies GAXS

5 N Gain Tracking

GTX1

A (See Figure 12) CCITT G712

-0.25

L

(Method 1)

O

-0.25

G

-0.50

CCITT G712

(Method 2)

AT&T

GTX2

-0.25

-0.50

-1.50

0.01

0.04

+0.25

+0.25

+0.50

+0.25

+0.50

+1.50

dB

dB/V

dB

dB

dB

dB

dB

dB

TA=0°C to 70°C

Sinusoidal Level:

+3 to -20 dBm0

Noise Signal Level:

-10 to -55 dBm0

-55 to -60 dBm0

Sinusoidal Level:

+3 to -40 dBm0

-40 to -50 dBm0

-50 to -55 dBm0

6

Quantization

Distortion

DQX1

28.00

(See Figure 13) CCITT G712

35.60

(Method 1)

33.90

29.30

14.20

Noise Signal Level:

dB -3 dBm0

dB -6 to -27 dBm0

dB -34 dBm0

dB -40 dBm0

dB -55 dBm0

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

6-31

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