CM88L70PEI datasheet(3/8 Pages) CALMIRCO

Part #	CM88L70PEI

Description	CMOS INTEGRATED DTMF RECEIVER, 3 VOLT VERSION

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Manufacturer	CALMIRCO [California Micro Devices Corp]

Direct Link	http://www.calmicro.com

Logo

3 / 8 page

6/16/2000

3

CM88L70/70C

CALIFORNIA MICRO DEVICES

215 Topaz Street, Milpitas, California 95035

Tel: (408) 263-3214

Fax: (408) 263-7846

www.calmicro.com

AC Characteristics: All voltages referenced to V

SS, VDD=3.0V + 20% / -10%, TA=-40°C to +85°C, fCLK=3.579545 MHz

using test circuit (Fig. 1) unless otherwise noted.

Notes:

1. dBm = decibels above or below a reference power

of 1 mW into a 600 ohm load.

2. Digit sequence consists of all 16 DTMF tones.

3. Tone duration = 40mS. Tone pause = 40 mS.

4. Nominal DTMF frequencies are used.

5. Both tones in the composite signal have

an equal amplitude.

6. Bandwidth limited (0 to 3 KHz) Gaussian Noise.

7. The precise dial tone frequencies are

(350 Hz and 440 Hz) ±2%.

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

9. Referenced to lowest level frequency component

in DTMF signal.

10. Minimum signal acceptance level is measured with

specified maximum frequency deviation.

11. Input pins defined as IN+, IN-, and TOE.

12. External voltage source used to bias V

REF.

13. This parameter also applies to a third tone injected onto

the power supply.

14. Referenced to Figure 1. Input DTMF tone level

at -28 dBm.

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