MH88437-P

Advance Information

10

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

‡ Typical figures are at 25

°C with nominal + 5V supplies and are for design aid only.

10

Return Loss at 2-Wire

(Reference 600

Ω)

RL

14

20

18

24

24

24

dB

dB

dB

Test circuit(Figure 9)

200-500Hz

500-2500Hz

2500-3400Hz

11

Longitudinal to Metallic Balance

Metallic to Longitudinal Balance

Nc

46

46

60

40

58

53

dB

dB

dB

dB

Test circuit (Figure 10)

300-1000Hz

1000-3400Hz

Test circuit (Figure 11)

200-1000Hz

1000-4000Hz

12

Idle Channel Noise

at 2-Wire

at VX

at 2-Wire

at VX

15

15

-65

-65

20

20

dBrnC

dBrnC

dBm

dBm

Cmess filter

300-3400Hz filter

13

Transmit Gain (2-Wire to VX)

Off-Hook

On-Hook

-1

0

0

+1

dB

dB

Test circuit (Figure 7)

Input 0.5V @ 1kHz

LC = 0V

14

Frequency Response Gain

(relative to Gain @ 1kHz)

-0.5

-0.5

0

0

0.5

0.5

dB

dB

300Hz

3400Hz

15

Intermodulation Distortion

products at VX and 2W

IMD

75

dB

F1 = 1kHz at -6dBm

F2 = 800Hz at -6dBm

Total signal power =

-3dBm

16

Distortion at VX due to near end

echo

(300Hz - 3400Hz bandwidth)

75

dB

F1 = 1kHz at -6dBm

F2 = 800Hz at -6dBm

Total signal power =

-3dBm

17

Common Mode Rejection at VX

CMR

50

dB

Test circuit (Figure 10)

1-100Hz Note 4

18

Common Mode overload

CML

100V

Test circuit (Figure 10)

1-100Hz Note 4

Variations from Standard AC Electrical Characteristics

Characteristics

Sym

Min

Typ

Max

Units

Test Conditions

1

Receive Gain (VR to 2-Wire)

-1.1

dB

Test circuit (Figure 8)

Input 0.5V at 1kHz

2

Frequency Response Gain

(Relative to Gain @ 1kHz)

-1.2

dB

300Hz to 3400Hz

3

Transhybrid Loss

THL

-12

-15

dB

300Hz to 1kHz

1kHz to 3400Hz

Characteristics

Sym

Min

Max

Units

Test Conditions