TDA6502 Datasheet

Single-chip 5 V mixer/oscillator and synthesizer for cable TV and VCR tuners
Pin-to-pin compatible with TDA6402, TDA6402A, TDA6403 and TDA6403A
Universal bus protocol (I²C-bus or 3-wire bus):
- Bus protocol for 18 or 19-bit transmission (3-wire bus)
- Extra protocol for 27-bit transmission (test modes and features for 3-wire bus)
- Address + 4 data bytes transmission (I²C-bus ?write? mode)
- Address + 1 status byte (I²C-bus ?read? mode)
- 4 independent I²C-bus addresses.
1 PMOS buffer for UHF band selection (25 mA)
3 PMOS buffers for general purpose, e.g. 2 VHF sub-bands, FM sound trap (25 mA)
33 V tuning voltage output
In-lock detector
5-step analog-to-digital converter (3 bits in I²C-bus mode)
15-bit programmable divider
Programmable reference divider ratio (64, 80 or 128)
Programmable charge pump current (60 or 280 mA)
Varicap drive disable
Balanced mixer with a common emitter input for VHF (single input)
Balanced mixer with a common base input for UHF (balanced input)
2-pin common emitter oscillator for VHF
4-pin common emitter oscillator for UHF
IF preamplifier with asymmetrical 75 Ohm output impedance able to drive loads from 75 Ohm upwards
Low power
Low radiation
Small size
The TDA6502A and TDA6503A differ from the TDA6502 and TDA6503 by the UHF port protocol in the I²C-bus mode .

TDA6502