AN6425K
Key Features
- Speech network IC for the multifunctional telephone sets
- Capable of interfacing with the light-weight small receivers and ECM transmitters
- Built-in 2V REG constant voltage source (2V typ) for ECM
- Built-in non-linear circuits in the transmitter and receiver systems in order to eliminate ambient noises
- Built-in speaker amplifier and capable of driving with a main wire current
- Built-in hold-tone amplifier, key-in-tone amplifier, and DTMF transmitter, and capable of setting the mode with the control pins
- Automatic gain control (automatic pad function) according to a circuit curret
- Built-in tertiary active filter circuit and capable of sending a DTMF circuit with much higher harmonic at a low distortion factor
- Measure the output between the Pins22 and 23 when a signal (-55dBm) is input to the Pin18. Open between the Pins19 and
- Measure the output between the Pins28 and 1 when a signal (-45dBm) is input to the Pin12. Open between the Pins3 and
