Si3230
Table 3. AC Characteristics (Continued)
(V
DDA
, V
DDD
= 3.13 to 5.25 V, T
A
= 0 to 70°C for K-Grade, –40 to 85°C for B-Grade)
Parameter
Longitudinal to Metallic Balance
Test Condition
Longitudinal Performance
200 Hz to 3.4 kHz,
β
Q1,Q2
≥
150, 1% mismatch
β
Q1,Q2
=
60 to 240
4
β
Q1,Q2
=
300 to 800
4
Using Si3201
Min
56
43
53
TBD
40
Typ
60
60
60
60
—
Max
—
—
—
—
—
Unit
dB
dB
dB
dB
dB
Metallic to Longitudinal Balance
Longitudinal Impedance
200 Hz to 3.4 kHz
200 Hz to 3.4 kHz at TIP or
RING
Register selectable
ETBO/ETBA
00
01
10
Longitudinal Current per Pin
Active off-hook
200 Hz to 3.4 kHz
Register selectable
ETBO/ETBA
—
—
—
33
17
17
—
—
—
Ω
Ω
Ω
00
01
10
—
—
—
4
8
8
—
—
—
mA
mA
mA
Notes:
1.
Analog signal measured as VTIP – VRING. Assumes ideal line impedance matching.
2.
The quantization errors inherent in the
µ/A-law
companding process can generate slightly worse gain tracking
performance in the signal range of 3 dB to –37 dB for signal frequencies that are integer divisors of the 8 kHz PCM
sampling rate.
3.
The level of any unwanted tones within the bandwidth of 0 to 4 kHz does not exceed –55 dBm.
4.
Assumes normal distribution of betas.
6
Preliminary Rev. 0.96
SILABS [ SILICON LABORATORIES ]
