ELECTRICAL CHARACTERISTICS

°C.

External components as listed in the ”Typical Values” column of EXTERNAL COMPONENTS Table.

Note: Testing of all parameter is performed at 25

°C. Characterisation as well as design rules used allow

correlation of tested performances at other temperatures. All parameters listed here are met in the oper-

ating range: -40 to +85

°C.

DC CHARACTERISTICS

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Line voltage

Il = 0, HI-Z

(High impedance feeding)

°C

44

50

V

Line voltage

Il = 0, HI-Z

(High impedance feeding)

°C

42

48

V

Line voltage

Il = 0, ACTIVE

°C

33

40

V

Line voltage

Il = 0, ACTIVE

°C

31

37

V

Ilim

Lim. current programming range ACTIVE mode

20

40

mA

Ilima

Lim. current accuracy

ACTIVE mode.

Rel. to programmed value

20mA to 40mA

-10

10

mA

Rfeed HI

Feeding resistance

HI-Z (High Impedance feeding)

2.4

3.6

k

Ω

Zrx

RX port input impedance

280

k

Ω

AC CHARACTERISTICS

L/T

Long. to transv.

(see Appendix for test circuit)

Rp = 41

Ω, 1% tol.,

Ω (*)

f = 300 to 3400Hz

48

50

dB

T/L

Transv. to long.

(see Appendix for test circuit)

Rp = 41

Ω, 1% tol.,

Ω (*)

f = 300 to 3400Hz

40

45

dB

T/L

Transv. to long.

(see Appendix for test circuit)

Rp = 41

Ω, 1% tol.,

Ω (*)

f = 1kHz

48

53

dB

2WRL

2W return loss

300 to 3400Hz,

Ω (*)

22

26

dB

THL

Trans-hybrid loss

300 to 3400Hz,

20Log|VRX/VTX|,

Ω (*)

30

dB

Ovl

2W overload level

at line terminals on ref. imped.

Ω (*)

10

dBm

TXoff

TX output offset

Ω (*)

-150

150

mV

G24

Transmit gain abs.

0dBm @ 1020Hz,

Ω (*)

-6.4

-5.6

dB

G42

Receive gain abs.

0dBm @ 1020Hz,

Ω (*)

-0.4

0.4

dB

G24f

TX gain variation vs. freq.

rel. 1020Hz; 0dBm,

300 to 3400Hz,

Ω (*)

-0.12

0.12

dB

STLC3055

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