1. General description
The TDA18275 is a high performance silicon tuner designed for terrestrial and cable TV
reception for both analog and digital broadcasts.
The TDA18275 supports all analog and digital TV standards and delivers a Low IF (LIF)
signal to a demodulator for analog TV and/or a channel demodulator for digital TV.
The TDA18275 facilitates TV design by:
• Allowing on-board integration
• Drastically reducing the tuner Bill Of Material (BOM)
• Providing flexibility in system solution development
2. Features and benefits
Single 3.3 V supply voltage
Worldwide multistandard terrestrial and cable capabilities
Alignment free
RoHS compliant
I
2
C-bus interface compatible with 3.3 V microcontrollers
Fully integrated oscillators
Fully integrated RF selectivity (no need for RF tracking filters coils)
2 programmable General-Purpose Outputs (GPO)
Dual IF output ports
1.7 MHz, 6 MHz, 7 MHz, 8 MHz and 10 MHz channel bandwidths
LIF channel center frequency output ranging from 0.8 MHz to 7.5 MHz
Fully integrated IF selectivity; eliminating the need for external SAW filters
Large flexibility in the IF filtering stage to ease the matching with various demodulators
circuits
Single-ended RF input, no need for external balun
Excellent return loss compatible with cable requirements
Power Level Detector (PLD) embedded
Integrated gain control
Self-AGC synchronization mode (VSync) for analog reception
Very fast tuning time
Strong immunity to LTE interferers in the digital dividend bandwidth
Strong immunity to WLAN interferers (802.11 a/b/g/n)
TDA18275
Hybrid (analog and digital) silicon tuner for terrestrial and
cable TV reception
Rev. 2 — 14 October 2013 Product short data sheet
