SI3021 datasheet(4/54 Pages) ETC

4 / 54 page

Si 30 35

Rev. 1.2

Electrical Specifications

Figure 1. Test Circuit for Loop Characteristics

Table 1. Recommended Operating Conditions

Parameter1

Symbol

Test Condition

Min2

Typ

Max2

Unit

Ambient Temperature

K-Grade

°C

Si3021 Supply Voltage, Analog

4.75

5.0

5.25

Si3021 Supply Voltage, Digital3

3.0

3.3/5.0

5.25

Notes:

1. The Si3035 specifications are guaranteed when the typical application circuit (including component

tolerances) and any Si3021 and any Si3012 are used. See Figure 16 on page 15 for typical application

circuit.

2. All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.

Typical values apply at nominal supply voltages and an operating temperature of 25 °C unless otherwise stated.

3. The digital supply, VD, can operate from either 3.3 V or 5.0 V. The Si3021 supports interface to 3.3 V logic when

operating from 3.3 V. The 3.3 V operation applies to both the serial port and the digital signals

RGDT, OFHK, RESET, M0, and M1.

Table 2. Loop Characteristics

(VA = Charge Pump, VD = +3.3 V ± 0.3 V, TA = 0 to 70°C for K-Grade, Refer to Figure 1)

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

DC Termination Voltage

VTR

IL = 20 mA

—

7.7

DC Termination Voltage

VTR

IL = 105 mA

—

DC Ring Current (with caller ID)

IRDC

——

DC Ring Current (w/o caller ID)

IRDC

——

µA

AC Termination Impedance

ZACT

—600

—

Ω

Operating Loop Current

ILP

—

120

Loop Current Sense Bits

LCS

LCS = Fh

180

155

—

Ring Voltage Detect

VRD

VRMS

Ring Frequency

—

On-Hook Leakage Current

ILK

VBAT = –48 V

—

µA

Ringer Equivalence Num. (with caller ID)

REN

—

1.0

1.67

—

Ringer Equivalence Num. (w/o caller ID)

REN

—

0.2

—

TIP

RING

–

Si3012 VTR

600

Ω

µF

SI3021 Datasheet(PDF) 4 Page - List of Unclassifed Manufacturers

SI3021 Datasheet(HTML) 4 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

Datasheet Download

Link URL