RF radio frequency chip/antenna

Chip DTMF Receiver Function Introduction: No external filter required, excellent performance Minimum supply voltage: 2.5V Maximum supply voltage: 5.5V Minimum operating temperature : -20°C Maximum operating temperature: 75°C Digital chip encapsulation form: SOP Number of pins: 18 Operating temperature range: -20°C to +75 °C Supply Voltage DC Max: 5.5V Supply Voltage DC Min: 2.5V Supply Voltage Range: 2.5V to 5.5V Supply Current: 3mA Input /Number of outputs: 4 Communication function: DTMF receiver

SP6T RF switch chip