DC AND OPERATING CHARACTERISTICS (continued)

Electrical characteristics are guaranteed over the complete temperature range, with typical load unless

otherwise specified. Typical values are given for : V

Symbol

Parameter

Test Conditions

Min.

Typ. Max.

Unit

Absolute Gain at 2100Hz

–

0

–

dB

Gain Relative to Gain at 1700Hz

Band-pass

< 390Hz

= 390Hz

= 450Hz

= 1100Hz

Band-pass or Low-pass

1100Hz to 2300Hz

3300Hz

5800Hz

> 16000Hz

–

–

–

- 0.5

- 0.5

–

–

–

–

–

–

–

–

–3

–

–

-30

-35

-35

+0.5

+0.5

–

-15

-35

dB

dB

dB

dB

dB

dB

dB

dB

Group Delay (modem transmission)

Main Channel : from 380 to 460Hz

Back Channel : from 1100 to 2300Hz

90

1.04

–

–

110

1.08

µs

ms

ATTENUATOR TRANSFER FUNCTION

Absolute Gain for 0dB Programmed

0.3

0

0.3

dB

Attenuation Relative to Programmed Value

Attenuation for Programmed Value =

∞

- 0.5

70

-

-

+0.5

dB

dB

Relative Attenuation between two Consecutive Steps

0.8

-

1.2

dB

TRANSMIT GENERAL CHARACTERISTICS

Modem Amplitude (Att = 0dB)

390Hz

450Hz

1300Hz

2100Hz

+3.5

+3.5

+3.5

+3.5

–

–

–

–

+4.5

+4.5

+4.5

+4.5

dBm

dBm

dBm

dBm

DTMF Amplitude (Att = 0dB)

- Low Frequency Group

- Low Frequency Group versus Low Frequency Group

-3

+1.5

–

–

- 1.5

+2.5

dBm

dB

Psophometric Noise

–

–

250

µV

RECEIVE FILTER TRANSFER FUNCTION

Absolute Gain at 1100Hz - Main Channel

(0dB programmed)

– 0.5

–

+ 0.5

dB

Gain Relative to the Gain at 1300Hz

(0dB programmed)

< 150Hz

150Hz to 450Hz

1300Hz

2100Hz

2300Hz

5500Hz to 10000Hz

> 10000Hz

–

–

– 0.5

1.1

–

–

–

–

–

–

1.8

–

–

–

–60

–50

0.5

2.3

2.7

–50

–60

dB

dB

dB

dB

dB

dB

dB

Absolute Gain at 420Hz

(back channel - narrow band) (0dB programmed)

0.5

–

+ 0.5

dB

Gain Relative to Gain at 420Hz (0dB programmed)

< 150Hz

380Hz

400Hz to 440Hz

460Hz

1100Hz to 10000Hz

> 10000Hz

–

–

– 0.5

–

–

–

–

–

–

–

–

–

–50

+ 0.5

+ 0.5

+ 0.5

–50

–60

dB

dB

dB

dB

dB

dB

Absolute Gain at 425Hz (tone detection or back

channel wide band) (0dB programmed)

– 0.5

–

+ 0.5

dB

Gain Relative to Gain at 425Hz (0dB programmed)

< 112Hz

275Hz

300Hz to 525Hz

575Hz

1375Hz to 10000Hz

> 10000Hz

–

–

– 0.5

–

–

–

–

–

–

–

–

–

–50

+ 0.5

+ 0.5

+ 0.5

–50

–60

dB

dB

dB

dB

dB

dB

Psophometric Noise

–

–

300

µV

TS7514

13/19