MH88632B 데이터 시트보기 (PDF) - Mitel Networks

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MH88632B

Central Office Interface Circuit

Mitel Networks 

Preliminary Information

MH88632B

AC Electrical Characteristics† (continued)

Characteristics

Sym

12 Frequency response gain

(relative to gain at 1kHz)

Note 2

13 Receive Gain, (RX/2-Wire):

Default Gain (0dB)

Min Typ‡ Max Units Test Conditions

Test Circuit Fig. 5

Input 0.5V

-1.3

0

0.1

dB 200 Hz

-0.3

0

0.1

dB 300 Hz

-0.3

0

0.1

dB 3000 Hz

-0.7

0

0.1

dB 3400 Hz

Test Circuit Fig. 4

Input 0.5V

-0.2

0

0.2

dB 1000Hz

Programmable Range

-12

6

dB 1000Hz

14 Frequency response gain

(relative to gain at 1kHz)

Note 2

Test Circuit Fig. 4

Input 0.5V

-1.3

0

0.1

dB 200 Hz

-0.3

0

0.1

dB 300 Hz

-0.3

0

0.1

dB 3000 Hz

-0.7

0

0.1

dB 3400 Hz

15 Signal Output Overload Level

at 2-wire

4

at TX

4

dBm

dBm

THD < 5%

Ref. 600Ω

Ref. 600Ω

16 Total Harmonic Distortion

at 2-Wire

at TX

THD

0.2

1

0.4

1

Input 0.5V, 1kHz

%

%

17 Idle Channel Noise

Nc

at 2-Wire

at TX

10 13 dBrn

11 13

C

dBrn

C

18 Common Mode Rejection Ratio

CMRR 48 65

dB 540Hz

Test Circuit Fig. 8

19 Power Supply Rejection Ratio

PSRR

at 2-Wire and TX

VCC

20 42

VEE

20 28

Ripple 0.1V, 1kHz

dB

dB

20 On-Hook Transmit Gain (2-Wire/TX)

Default Gain 0dB

-1

0

1

dB 1000Hz

Programmable Range

-12

6

21 On-Hook frequency Response

-1

0

1

Gain (relative to off-hook gain)

¦Electrical Characteristics are over recommended operating conditions unless otherwise stated

‡Typical figure are at 25°C with nominal 5V supplies and are for design aid only

*All test conditions use a test source impedance which matches the device’s input impedance

dBm is referenced to 600Ω unless otherwise stated

Notes: Impedance set by external network equal to 10 times the required input impedance

Test conditions use a transmit and receive gain set to 0dB default

"Net" indicates network balance impedance

dB 1000Hz

dB Input 0.5V, 1kHz

2-249

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