Si3226/7

Si3208/9

6

Preliminary Rev. 0.33

Table 4. AC Characteristics

Parameter

Test Condition

Min

Typ

Max

Unit

TX/RX Performance

Overload Level

2.5

—

—

Overload Compression

2-Wire – PCM

Figure 6

—

—

2-Wire – PCM or PCM – 2-Wire:

200Hz to 3.4kHz

——

–65

dB

PCM – 2-Wire – PCM:

200 Hz – 3.4 kHz,

16-bit Linear mode

——

–65

dB

Signal-to-(Noise + Distortion)

200Hz to 3.4kHz

D/A or A/D 8-bit

Figure 5

—

—

Audio Tone Generator Signal-to-

0 dBm0, Active off-hook, and

46

—

—

dB

Intermodulation Distortion

—

—

–41

dB

2-Wire to PCM or PCM to 2-Wire

1014 Hz, Any gain setting

–0.2

—

0.2

dB

Attenuation Distortion vs. Freq.

0 dBm 0

See AN317

Group Delay vs. Frequency

1014 Hz sine wave,

reference level –10 dBm

Signal level:

——

—

—

3 dB to –37 dB

—

—

0.25

dB

–37 dB to –50 dB

—

—

0.5

dB

–50 dB to –60 dB

—

—

1.0

dB

Round-Trip Group Delay

1014 Hz, Within same time-slot

—

450

500

µs

Crosstalk between channels

TX or RX to TX

TX or RX to RX

0dBm0,

300Hz to 3.4kHz

300Hz to 3.4kHz

—

—

—

—

–75

–75

dB

dB

200Hz to 3.4kHz

26

30

—

dB

300Hz to 3.4kHz

26

30

—

dB

Noise Performance

C-Message weighted

—

8

12

dBrnC

Psophometric weighted

—

–80

–78

dBmP

RX and TX, dc to 3.4 kHz

40

—

—

dB

Notes:

1. The input signal level should be 0 dBm0 for frequencies greater than 100 Hz. For 100 Hz and below, the level should

be –10 dBm0. The output signal magnitude at any other frequency is smaller than the maximum value specified.

3. The quantization errors inherent in the µ/A-law companding process can generate slightly worse gain tracking

performance in the signal range of 3 to –37 dB for signal frequencies that are integer divisors of the 8 kHz PCM

sampling rate.

coefficients.

5. The level of any unwanted tones within the bandwidth of 0 to 4 kHz does not exceed –55 dBm.