TDA7540N
TDA7540N is AM/FM car radio tuner IC manufactured by STMicroelectronics.
Features
FM-part
- RF AGC generation by RF and IF detection
- I/Q mixer for 1st FM IF 10.7MHz with image rejection
- Mixer for 2nd IF 450k Hz
- Internal 450KHz bandpass filter with bandwidth control by ISS
- Fully integrated FM-demodulator with spike cancellation
AM-part
- Wide and narrow AGC generation
- Mixer for 1st IF 10.7MHz, AM upconversion
- Mixer for 2nd IF 450k Hz, AM downconversion
- Integrated AM-demodulator
- AM IF- and audio noise blanking
Stereodecoder
- PLL with adjustment free, fully integrated VCO
- Automatic pilot dependent mono/stereo switching
- Programmable ROLL-OFF pensation
- High cut and stereo blend-characteristics programmable
- Dedicated RDS-mute
- Internal noise blanker with several threshold controls
Table 1. Device summary
Order code
Temp range, C
TDA7540N TDA7540NTR
-40 to 85°C -40 to 85°C
LQFP80
Additional...
