2-26

MH88422

Preliminary Information

† Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.

‡ Typical figures are at 25

°C and are for design aid only.

† Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.

‡ Typical figures are at 25

°C and are for design aid only.

Characteristics

Sym

Min

Max

Units

Test Conditions

1

2-Wire input Impedance

(200

Ω + 820Ω //115nF)

Zin

900

Ω

@ 1kHz

2

Return Loss at 2-Wire

(200

Ω + 820Ω //115nF)

RL

20

20

20

22

24

26

dB

dB

dB

300-500Hz

500-2500Hz

2500-3400Hz

3

Longitudinal to Metallic Balance

40

55

53

65

60

60

dB

dB

dB

50-300Hz

300-1000Hz

1000-4000Hz

4

Idle Channel Noise

at 2-Wire

At VX

Nc

-72

-72

-58

dBmp

dBmp

5

Transmit Gain (2-Wire to VX)

-0.4

dB

Input 0.5V @ 1kHz

Off -Hook

6

Frequency Response Gain

(relative to gain @ 1kHz)

-0.6

-0.6

dB

dB

300Hz

3400Hz

Characteristics

Sym

Min

Max

Units

Test Conditions

1

2-Wire Input Impedance

(600

Ω)

ZIn

600

Ω

@ 1kHz

2

Return Loss at 2-Wire

(Reference 600

Ω)

ERL

SFRL

20

14

20

18

dB

500-2500Hz

200-3200Hz

3

Longitudinal to Metallic Balance

Metallic to Longitudinal Balance

58

53

60

40

60

55

dB

dB

dB

dB

200-1000Hz

1k-3kHz

200-1000Hz

1k-4kHz

4

Idle Channel Noise

at 2-Wire

at VX

Nc

13

13

20

dBrnC

dBrnC

5

Transmit Gain (2-Wire to Vx)

-0.4

dB

Input 0.5V @ 1kHz

Off- Hook

6

Frequency Response Gain

(relative to gain @ 1kHz)

-0.6

-0.6

dB

dB

200Hz

3400Hz