DTMF Transceiver
Documents
| » PDF of this Data Sheet (376 KB) is
available. |
ML7005.pdf
|
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 µA 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 highspeed 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) |
