U4224B
Description
The U4224B is a bipolar integrated straight through receiver circuit in the frequency range of 40 to 80 kHz
Key Features
- Specifications are valid for Q > 30
- An optimal signal to noise ratio will be achieved by a resonant resistance of 50 to 200 kW
- SB A resistor RSB is connected between SB and GND
- It controls the bandwidth of the crystal filters
- It is remended: RSB = 0 W for DCF 77.5 kHz, RSB = 10 kW for 60 kHz WWVB and RSB = open for JG2AS 40 kHz
