FEDL7005-01

Issue Date: Oct. 18, 2011

ML7005

DTMF Transceiver

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GENERAL DESCRIPTION

The ML7005 is a multi-functional DTMF transceiver LSI with built-in a DTMF signal generator, a

DTMF signal receiver, a call progress tone generator, a call progress tone detector, and a FAX (FX)

signal detector.

Each functional block can be controlled by an external MCU via a 4-bit processor interface.

The ML7005 does not contains a modem.

However, the DTMF system data transmission is possible at less than 66 bps by setting the DTMF

receiver to the high-speed detection mode.

The ML7005 operates with low-power consumption and is suitable for remote control systems,

especially for ACR (Automatic Cost Routing) controllers.

FEATURES

• Wide range of power supply voltage : +2.7 V to +5.5 V

• Low power consumption

Operating mode : 4.0 mA (VDD = 3 V) Typ.

Operating mode : 5.0 mA (VDD = 5 V) Typ.

Power down mode : 1 mA Typ.

• The 4-bit processor interface supports both the Intel processor mode in which a read signal and

a write signal are used independently of each other, and the Motorola processor mode in which

a read signal and a write signal are used in common.

• The DTMF receiver can select either the high-speed detection mode (signal repeat time: more than

60 ms) or the normal detection mode (signal repeat time: more than 90 ms).

• Built-in call progress tone generator

• Built-in FAX signal (FX: 1300 Hz) detector

• The DTMF signal generator, DTMF signal detector, call progress tone generator, and call progress

tone detector can operate concurrently.

• Built-in 3.579545 MHz crystal oscillator circuit

• Package :

32-pin plastic SSOP (SSOP32-P-430-1.00-K) (Product name: ML7005MB)