The ST70136 ADSL Analog Front End (AFE) chip implements the analog transceiver functions required in a Customer Premise ADSL modem. It connects the digital modem chip with the loop driver and hybrid balance circuits. The AFE has been designed with high dynamic range in order to greatly reduce the external filtering requirements at the front end. The AFE chip and its companion digital chip along with a loop driver, implement the complete G.992.2 and G.992.1 DMT modem solution.
The ST70136 is a Customer Premise ADSL Analog Front End (AFE) chip designed to implement analog transceiver functions. It connects the digital modem chip with loop driver and hybrid balance circuits, supporting G.992.2 and G.992.1 DMT modem solutions.
The device features high dynamic range to reduce external filtering requirements. The receive path includes a programmable gain amplifier (0 to 31dB) and a 12-bit A/D converter, while the transmit path utilizes a 14-bit D/A converter with programmable gain from 0 to -15dB.
| Transmit Programmable Gain | 0 to -15dB in 1dB steps |
|---|---|
| Transmit D/A Converter | 14-bit |
| Technology | 0.50um, 5V BICMOS |
| Digital Interface Voltage | 3.3V |
| Analog Interface Voltage | 5V |
It implements the analog transceiver functions required in a Customer Premise ADSL modem.
Yes, it implements complete G.992.2 and G.992.1 DMT modem solutions.