MV8870 Ver la hoja de datos (PDF) - Zarlink Semiconductor Inc

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componentes Descripción

Fabricante

MV8870

INTEGRATED DTMF RECEIVER

Zarlink Semiconductor Inc 

MV8870/MV8870-1

DYNAMIC CHARACTERISTICS: DETECTOR

Characterslic

Value (MV8870) Value (MV8870-1)

Symbol

Min Typ Max Min Typ Max

Units

Notes

Valid input level (GS)

Invalid input level (GS)

Acceptable positive twist

Acceptable negative twist

Frequency deviation accept

VVL

77 7

PVL

-29

2458 6-1 7

1.0 -31

2458 mVp-p 1, 2, 3, 5, 6, 9

10

dBm

VlL

30.8 mVp-p 1, 2, 3, 5, 6. 9

PIL

-37 dBm

TAP

10

6.0 10

dB

2, 3, 6, 9

TAN

10

6.0 10 _

dB

2, 3, 6, 9

∆FA

-1.5

-2.0

+1.5 -1.5

+ 2.0 -2.0

+1.5 %

+2.0 Hz

2, 3, 5, 9

Frequency deviation rejected as too low ∆FRL

-5.0 -3.5

-5.0 -3.5 %

2, 3, 5, 9

Frequency deviation rejected as too high ∆FRH

3.5 5.0 .

3.5 5.0 _

2, 3, 5, 9

Third tone tolerance

PITT

-16

-18

dB

2, 3, 4, 5, 9,12

Noise tolerance

PNT

-12

-12

dB

2, 3, 4, 5, 7, 9, 10

Dial tone tolerance

PDTT

+ 22

+ 22

dB

2, 3, 4, 5, 8, 9, 11

Tone present detect time

tDP

5 11 14 5

11 14

ms

Tone absent detect time

tDA

0.5 4.0 8.5 0 5 4 0 8.5 ms

NOTES

1. dBm = decibels above or below a reference power of 1 mW into a 600Ω load.

2. Digit sequence consists of all DTMF tones.

3. Tone duration = 40ms, tone pause = 40ms.

4. Signal condition consists of nominal DTMF frequencies.

5. Both tones in composite signal have equal amplitudes.

6. Tone pair is deviated by ± (1.5% + 2Hz).

7. Bandwidth limited (3kHz) Gaussian noise.

8. The precise dial tone frequencies are (350Hz and 440Hz) ± 2%.

9. For an error rate of better than 1 in 10,000.

10. Referenced to lowest frequency component in DTMF signal.

11. Referenced to the minimum valid input level.

12. Refer to Fig.11. Input DTMF Tone Level at - 25dBm (- 28dBm at GS pin). Interference Frequency Range is 480 to 3400Hz.

DYNAMIC CHARACTERISTICS: DECODER

Characteristic

Propagation delay (SVGT to Q)

Propagation delay (SVGT to StD)

Output data set-up time (Q to StD)

Enable propagation delay (TOE to Q)

Value (MV8870/MV8870-1)

Symbol

Units

Min Typ

Max

tPQ

tPSID

tQSID

tPTE

8

11

µs

12

µs

3.4

µs

50

60

ns

Disable propagation delay (TOE to Q) tPTD

300

ns

Conditions

TOE high. See Fig.14

See Fig. 14

TOE high. See Fig.14

RL = 10kΩ(pulldown) CL = 50pF

See Fig. 15.

RL = 10kΩ(pulldown) CL = 50pF

See Fig. 15.

9

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