Features: ` Reference oscillator up to 15 MHz` Two programmable 16 bit dividers adjustable from 2 to 65535` Fine tuning steps: AM 1 kHzFM 2 kHz`4 programmable switching outputs (open drain up to 15 V)` Few external component required due to integrated loop-push-pull stage for AM/FM` High signal/ n...
U4285BM: Features: ` Reference oscillator up to 15 MHz` Two programmable 16 bit dividers adjustable from 2 to 65535` Fine tuning steps: AM 1 kHzFM 2 kHz`4 programmable switching outputs (open drain up to 15 ...
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` Reference oscillator up to 15 MHz
` Two programmable 16 bit dividers adjustable from 2 to 65535
` Fine tuning steps:
AM 1 kHz
FM 2 kHz
`4 programmable switching outputs (open drain up to 15 V)
` Few external component required due to integrated loop-push-pull stage for AM/FM
` High signal/ noise ratio
Parameter |
Symbol |
Value |
Unit |
Supply voltage Pin 1 |
VDD |
0.3 to +6 |
V |
Input voltage Pins 2, 3, 4, 9, 11, 18 and 19 |
VI |
0.3 to VDD + 0.3 |
V |
Output current Pins 3, 5, 6, 7 and 8 |
I0 |
1 to +5 |
mA |
Output drain voltage Pins 5, 6, 7 and 8 |
VOD |
15 |
V |
Analogue supply voltage Pin 16 with 220 seriell resistance 2 minutes 1 |
VA |
6 to 15 |
V |
VA |
25 |
V | |
Output current Pins 12 and 15 |
IAO |
1 to +20 |
mA |
Ambient temperature |
Tamb |
25 to +85 |
°C |
Storage temperature |
Tstg |
40 to +125 |
°C |
Junction temperature |
Tj |
125 |
°C |
Electrostatic handling (MIL Standard 883D method 3015.7: all supply pins connected together) ) |
±VESD |
1000 |
V |
The U4285BM is an integrated circuit in BICMOS technology for frequency synthesizers. It performs all the functions of a PLL radio tuning system and is controlled by an I2C bus. The U4285BM is designed for all frequency synthesizer applications in radio receivers, as well as RDS ( Radio Data System ) applications.