Sanyo LC73881M Specifications

Applications

• Remote controllers for telephone answering machines

and other telephone products

Features

• Detects 16 DTMF signals.

• Includes on-chip all filters required in a DTMF receiver

— Dial-tone filter

— High-frequency group bandpass filter

— Low-frequency group bandpass filter

• Serial data output

• Supports microprocessor-controlled guard times.

• Wide operating power-supply voltage range: 2.7 to 5.5 V

• Supports a low power mode that allows current

dissipation to be reduced.

Package Dimensions

unit: mm

3086A-MFP10S

Ordering number : EN5000A

DTMF Receiver LSI

63098HA (OT)/72595HA (OT) No. 5000-1/6

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Specifications

Absolute Maximum Ratings at Ta = 25°C

Allowable Operating Ranges at Ta = –35 to +70°C, V

= 0 V

DC Electrical Characteristics at Ta = 25°C, V

= 3 V, V

= 0 V

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

max –0.3 to + 6.0 V

Input voltage V

–0.3 to V

+ 0.3 V

Input current I

–10 to +10 mA

Output voltage V

OUT

–0.3 to V

+ 0.3 V

Allowable power dissipation Pd max Ta ≤ 70°C 120 mW

Operating temperature Topr –35 to +70 °C

Storage temperature Tstg –50 to +125 °C

Parameter Symbol Conditions min typ max Unit

Operating supply voltage V

2.7 5.5 V

Input high-level voltage V

Pin 7 0.7 V

Pin 2 0.85 V

Input low-level voltage V

Pin 7 0.3 V

Pin 2 0.15 V

Parameter Symbol Conditions min typ max Unit

Operating supply current I

(op) 1.6 2.8 mA

Standby supply current I

(st) PD pin = 3 V 20 µA

Output high-level current I

Pins 6, 8 and 9, V

OUT

= 2.6 V –0.3 mA

Output low-level current I

Pins 6, 8 and 9, V

OUT

= 0.4 V 0.6 mA

Input impedance Zin Pin 1 10 kΩ

Pull-down resistor current I

PD = 3 V 1.2 3.0 µA

CMOS LSI

LC73881M

SANYO: MFP10S

[LC73881M]

AC Electrical Characteristics at Ta = 25°C, V

= 3 V, V

= 0 V, f

OSC

= 4.194304 MHz

Note: 1. The dBm values are defined such that 0 dBm is the 1 mW power level for a 600 Ω load.

2. All 16 DTMF signals frequency

3. With a 40 ms DTMF signal period and a 40 ms pause period

4. Nominal DTMF signal frequencies

5. Low-group and high-group signal levels are the same.

6. DTMF signal frequency deviations within ±1.5% ± 2 Hz

7. Gaussian noise with a 0 to 3 kHz bandwidth

8. 350 and 440 Hz dial tone frequencies

9. Error rate of less than 1 error in 10,000 events

10.Referenced to the lowest component of the DTMF signal.

11.Twist =

Pin Assignment

High-frequency group tone level

Low-frequency group tone level

No. 5000-2/6

LC73881M

Parameter Symbol Conditions min typ max Unit

Input signal valid level — *1, 2, 3, 5, 6, 9 –45 –20 dBm

Positive twist accept — *2, 3, 6, 9, 11 ±10 dB

Frequency detection accept — *2, 3, 5, 9 ±1.5% ±2 Hz

Frequency rejection accept — *2, 3, 5 ±3.5 %

Third tone tolerance — *2, 3, 4, 5, 9, 10 –16 dB

Dial tone tolerance — *2, 3, 4, 5, 8, 9, 10 +22 dB

Noise tolerance — *2, 3, 4, 5, 7, 9, 10 –8 dB

Tone present detection time t

See the timing chart. 3 20 ms

Tone absent detection time t

See the timing chart. 0.5 20 ms

Tone duration accept t

REC

See the timing chart. 20 ms

Tone duration reject t

REC

See the timing chart. 45 ms

Inter-digit pause invalid time t

See the timing chart. 20 ms

Inter-digit pause valid time t

See the timing chart. 40 ms

Data shift speed — 1 MHz

Data output delay time t

PAD

See the ACK/SD timing chart 100 ns

Setup time delay t

See the ACK/SD timing chart 4 µs

Data hold time t

See the ACK/SD timing chart 30 ns

Oscillator frequency f

OSC

4.190109 4.194304 4.198498 MHz

Load capacitance C

The OSCI and OSCO pins 30 pF

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