L3037 datasheet(13/22 Pages) STMICROELECTRONICS

13 / 22 page

ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

INSERTION LOSS

Transmit V Gain

0dBm, 1KHz

-6.22

-5.82

Receive V Gain

-0.2

0.2

INSERTION LOSS vs. FREQUENCY (rel 1KHz / 0dBm)

Transmit V Gain

0.3 to 3.4KHz

-0.1

0.1

Receive V Gain

-0.1

0.1

METERING INJECTION

GTTX

Transfer Gain

VTTXIN = 0.66Vrms ZL =200

Ω;

⋅ RP =80Ω;Vmoff =0

3.18

3.51

THD

Harmonic Distortion

GAIN LINEARITY (rel 1KHz, -4dBm)

Transmit V Gain

-55dBm to 7dBm (1)

-0.1

0.1

Receive V Gain

-0.1

0.1

GROUP DELAY (2-4, 4-2) 0DbM

TgABS

Absolute

3KHz

µs

TgDIS

4 to 2-wire

0.5 to 3,4KHz

µs

TOT HARMONIC DISTORTION

Thd4

2 to 4-wire

7dBm, 0.3 to 3.4KHz

-46

Thd2

4 to 2-wire

-46

IDLE CHANNEL NOISE

Vabp

2-wire port

psophometric

-78

-72

dBmP

Vtxp

4-wire transmit

psophometric

-82

-76

dBmP

Vabc

2-wire port

c message

dBr nC

Vtxc

4-wire transmit

c message

dBr nC

RINGING FUNCTION

0 cross

Zero Crossing Threshold Level

fRING = 16 to 66Hz

RGIN = 3Vrms

-70

IRT

Ring Trip Threshold

7.5

mA DC

TRTD

Ring Trip Detection Time

RL = 1.8k, fRING = 25Hz

150

BATTERY FEED CHARACTERISTIC

POWER DOWN STATE

ILGND

Loop Current

TIP or RING to BGND

0.5

ILBAT

Loop Current

TIP or RING to Vbat

0.5

Loop Current

RL =0

STAND BY STATE

Iloop Accuracy

constant region

VLOS

Line Voltage

@ IL = 0

ACTIVE STATE

VLO

Line Voltage

@ IL = 0

34.5

37.5

Rfeed

Feeding Resistance Accuracy

-10

+10

Ilim

Loop Current Limit Accuracy

Ilim = 25mA, 44mA, 55mA

-8

Ilim

GROUND START STATE

ZTIP

Tip Lead Impedance

100

Ω

IGS

Ring Lead Current

RING to GND

(1) For level lower than -40dB guaranteed by correlation.

L3037

13/22

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