The TDA18250A is a silicon tuner designed specifically for worldwide cable and terrestrial digital Set Top Boxes (STB).
- The TDA18250A ensures a low system cost by saving external components such as:
- Low-Noise Amplifiers
- Surface Acoustic Wave (SAW) filters
- RF splitter
Moreover, thanks to its 8 kV ESD capability, EIA/JESD22-A114 (HBM), on the RF input pin and the loop-through pin, the application level ESD protection can be reduced.
- The TDA18250A silicon tuner meets current and future digital cable and terrestrial TV reception with:
- Low-power consumption
- High linearity
- Very low noise figure (3.8 dB typical)
- High immunity to wireless interferers (WLAN, LTE and GSM)
- The TDA18250A ensures ease of use with:
- Easy on-board integration
- Efficient and effective PCB design
- Reduced external components
- Integrated Zero Power Loop-Through (ZPLT)
Feature
- Single 3.3 V supply voltage
- RF frequency coverage up to 1 GHz
- Flexible low IF output from 3 MHz to 7.5 MHz to ease the matching with various demodulators
- RoHS compliant
- I²C-bus interface compatible with 3.3 V microcontrollers
- Strong Immunity to wireless interferers (WLAN, GSM, LTE)
- Multi-reference clock frequency compliant: 16 MHz, 24 MHz, 25 MHz, 27 MHz, 30 MHz
- Crystal oscillator output buffer to drive demodulator, SoC or slave tuner
- Slave Tuner Output (STO), integrated splitter for dual tuner applications
- Fully integrated oscillators
- LT output, both in active and Zero Power Loop-Through mode (ZPLT)
- Fully integrated IF and RF selectivity; eliminating the need for external SAW filters
- Single-ended RF input (no need for external balun)
- Enhanced ESD protection (8 kV) on RF_IN and ZPLT pins
- Alignment free
- Excellent return loss compatible with cable requirements
- Integrated RSSI function, readable through I²C-bus
- Integrated temperature sensor
- Integrated gain control
- Digital cable STB applications:
- DVB-C
- J83.B
- J83.C
- Digital terrestrial STB applications:
- DTMB
- DVB-T/DVB-T2 (NORDIG 2.4, DTG D-Book 7)
- ISDB-T
- ATSC
- PVR
- DOCSIS 2.0 and EuroDOCSIS 2.0 cable modem
- DOCSIS 3.0 and EuroDOCSIS 3.0
