MT88L70AN1 Zarlink, MT88L70AN1 Datasheet - Page 10

• Manufacturer Part Number: MT88L70AN1
• Description: DTMF RX 3.58MHz CMOS 3V 20-Pin SSOP Tube
• Manufacturer: Zarlink

Specifications of MT88L70AN1

• Package: 20SSOP
• Operating Frequency: 3.58 MHz
• Typical Supply Current: 2 mA
• Typical Operating Supply Voltage: 3 V
• Minimum Operating Supply Voltage: 2.7 V
• Maximum Operating Supply Voltage: 3.6 V

‡ Typical figures are at 25
*
10. Referenced to lowest level frequency component in DTMF signal.
11. Referenced to the minimum valid accept level.
12. Guaranteed by design and characterization.
AC Electrical Characteristics
1. dBm= decibels above or below a reference power of 1 mW into a 600 ohm load.
2. Digit sequence consists of all DTMF tones.
3. Tone duration= 40 ms, tone pause= 40 ms.
4. Signal condition consists of nominal DTMF frequencies.
5. Both tones in composite signal have an equal amplitude.
6. Tone pair is deviated by
7. Bandwidth limited (3 kHz) Gaussian noise.
8. The precise dial tone frequencies are (350 Hz and 440 Hz)
9. For an error rate of better than 1 in 10,000.
NOTES
1
2
3
4
5
6
7
8
Valid input signal levels
(each tone of composite
signal)
Negative twist accept
Positive twist accept
Frequency deviation accept
Frequency deviation reject
Third zone tolerance
Noise tolerance
Dial zone tolerance
Characteristics
°
C and are for design aid only: not guaranteed and not subject to production testing.
±
1.5%
±
2 Hz.
- V
DD
= 3.0 V +20%/-10%, V
Sym
Zarlink Semiconductor Inc.
±1.5% ± 2 Hz
MT88L70
±3.5%
Min.
15.4
±
-34
SS
2%.
10
= 0 V, -40
°
C ≤ T
Typ
+22
-16
-12
O
‡
≤ +85
Max
-4.0
489
°
8
8
C, using Test Circuit shown in Fig. 6.
mV
Units
dBm
dB
dB
dB
dB
dB
RMS
1,2,3,5,6,9
Min @ V
Max @ V
2,3,6,9,12
2,3,6,9,12
2,3,5,9
2,3,5,9
2,3,4,5,9,10
2,3,4,5,7,9,10
2,3,4,5,8,9,11
Notes*
Data Sheet
DD
DD
=3.6 V
=2.7 V