CD2025B
DESCRIPTION
The CD2025B is a monolithic integrated circuit consisting of a 2-channel po wer amplifier. It is suitable for stereo and bridge amplifier application of radio cassette tape recorder.
Outline Drawing
FEATURES z High ou tput power Stereo: Po=2.3W (Typ) at Vcc=9V, R L =4 Ω Bridge: Po=4.7W (Typ) at Vcc=9V, R L =8 Ω z z z z z z Low switching distortion at high frequency. Small shock noise at th e time of power on/off due to a built-in mu ting circuit Good ripple rejection due to a built-in ripple filter. Good ch annel separation. Soft tone at the time of output saturation. Closed loop voltage gain fixed 45 d B (Bridge: 51d B) but availability with external resistor added. z z Minimu m nu mb er of external parts required. Easy to design radiator fin.
BLOCK DIAGRAM AND PIN CONNECTION
PRE GND 7 IN1 8 NF1 POWER GND 9 Fin INPUT AMP 1 + BS1 10 OUT1 11 Vcc 12
SHOCK NOISE REJECTOR
OUT AMP 1 RIPPLE FILTER
INPUT AMP 2 + 6 R.R 5 IN2
OUT AMP 2
4 Fin 3 NF2 POWER GND BS2
2...
