6-32

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

Note 6:

Transmit (A/D) Path (cont’d)

Characteristics

Sym

Min

Typ*

Max

Units

Test Conditions

A

N

A

L

O

G

Quantization

CCITT G712

Distortion

(Method 2)

(cont’d)

AT&T

(See Figure 13)

35.30

29.30

24.30

dB

dB

dB

Sinusoidal Input Level:

0 to -30 dBm0

-40 dBm0

-45 dBm0

7

Idle Channel

C-message

18

dBrnC0 µ-Law Only

Noise

Psophometric

-67

dBm0p

CCITT G712

8

Single Frequency Noise

-56

dBm0

CCITT G712

9

Harmonic Distortion

(2nd or 3rd Harmonic)

-46

dB

Input Signal:

0 dBm0 @ 1.02 kHz

10

Envelope Delay

270

µs

@ 1004 Hz

11

Envelope Delay

1000-2600 Hz

Variation With

600-3000 Hz

Frequency

400-3200 Hz

60

150

250

µs

µs

µs

Input Signal:

400-3200 Hz Sinewave

at 0 dBm0

12

Intermodulation

CCITT G712

Distortion

50/60 Hz

-55

dB

50/60 Hz @ -23 dBm0

and any signal within

300-3400 Hz at -9 dBm0

CCITT G712

2 tone

-41

dB

740 Hz and 1255 Hz

@ -4 to -21 dBm0.

Equal Input Levels

AT&T

-47

dB

2nd order products

4 tone

-49

dB

3rd order products

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

-1.8

-0.125

-0.275

-0.350

-0.80

-25

-30

0.00

0.125

0.125

0.030

-0.100

-14

-32

dB

dB

dB

dB

dB

dB

dB

dB

dB

0 dBm0 Input Signal

Transmit

Filter

Response

14

Crosstalk D/A to A/D

-70

dB

0 dBm0 @ 1.02 kHz

in D/A

15

Power Supply

Rejection

33

35

dB

dB

1.02 kHz

16

Overload Distortion (See Fig.15)

Input frequency=1.02kHz