SI3232 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

SI3232

DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING

Silicon Laboratories 

Si3232

Table 4. AC Characteristics (Continued)

(VDD, VDD1–VDD4 = 3.13 to 3.47 V, TA = 0 to 70 °C for K-Grade, –40 to 85 °C for B-Grade)

Parameter

Test Condition

Min

Typ

Idle Channel Noise4

Noise Performance

C-Message weighted

—

12

Psophometric weighted

—

–78

3 kHz flat

—

—

PSRR from VDD1 – VDD4

PSRR from VBAT

RX and TX, dc to 3.4 kHz

40

—

RX and TX, dc to 3.4 kHz

60

—

Longitudinal Performance

Longitudinal to Metallic Bal-

ance (forward or reverse)

200 Hz to 1 kHz

1 kHz to 3.4 kHz

58

63

53

58

Metallic to Longitudinal Bal-

ance

200 Hz to 3.4 kHz

40

—

Longitudinal Impedance5

200 Hz to 3.4 kHz at TIP or RING

Register-dependent

OBIAS/ABIAS

Max Unit

15 dBrnC

–75 dBmP

18

dBrn

—

dB

—

dB

—

dB

—

dB

—

dB

Longitudinal Current per Pin5

00 = 4 mA

01 = 8 mA

10 = 12 mA

11 = 16 mA

Active off-hook

200 Hz to 3.4 kHz

Register-dependent

OBIAS/ABIAS

00 = 4 mA

01 = 8 mA

10 = 12 mA

11 = 16 mA

—

50

—

Ω

—

25

—

Ω

—

25

—

Ω

—

20

—

Ω

—

4

—

mA

—

8

—

mA

—

8

—

mA

—

10

—

mA

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 will be smaller than the maximum value

specified.

2. Analog signal measured as VTIP – VRING. Assumes ideal line impedance matching.

3. VDD = 3.3 V, VBAT = –52 V, no fuse resistors, RL = 600 Ω, ZS = 600 Ω synthesized using RS register coefficients.

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

5. The OBIAS and ABIAS registers program the dc bias current through the SLIC in the on-hook transmission and off-

hook active conditions, respectively. This per-pin total current setting should be selected such that it can

accommodate the sum of the metallic and longitudinal currents through each of the TIP and RING leads for a given

application.

Preliminary Rev. 0.96

9

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