Overview
The TDA18250BHN/C1K is a silicon tuner designed by NXP USA Inc. specifically for worldwide cable and terrestrial digital Set Top Boxes (STB). This component is engineered to meet current and future digital TV reception standards with its low-power consumption, high linearity, and very low noise figure. It integrates several key components, reducing the need for external Low-Noise Amplifiers, Surface Acoustic Wave (SAW) filters, and RF splitters, thus lowering the overall system cost and enhancing ease of use.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Supply Voltage | VCC | 3.3 V |
| RF Frequency Coverage | Up to 1 GHz | |
| Noise Figure | 3.8 dB (typical) | |
| ESD Protection | EIA/JESD22-A114 (HBM) | 8 kV on RF_IN and LT pins |
| Package Type | 32-HVQFN (5x5 mm) | |
| Interface | I2C-bus compatible with 3.3 V microcontrollers | |
| Reference Clock Frequency | 16 MHz, 24 MHz, 25 MHz, 27 MHz, 30 MHz | |
| Low IF Output Range | 3 MHz to 7.5 MHz | |
| Compliance | RoHS compliant |
Key Features
- Single 3.3 V supply voltage
- High immunity to wireless interferers (WLAN, LTE, GSM)
- Flexible low IF output from 3 MHz to 7.5 MHz
- Integrated splitter for dual tuner applications (Slave Tuner Output - STO)
- Fully integrated IF and RF selectivity, eliminating the need for external SAW filters
- Crystal oscillator output buffer to drive demodulator, SoC, or slave tuner
- Easy on-board integration and efficient PCB design
- Strong ESD protection (8 kV on RF input and loop-through pins)
Applications
The TDA18250BHN/C1K is primarily designed for use in digital Set Top Boxes (STB) for both cable and terrestrial TV reception. Its features make it suitable for a variety of applications, including:
- Digital TV receivers
- Cable and satellite TV systems
- Hybrid TV systems combining broadcast and internet content
- Other multimedia devices requiring high-performance TV tuning capabilities
Q & A
- What is the primary application of the TDA18250BHN/C1K?
The primary application is in digital Set Top Boxes (STB) for both cable and terrestrial TV reception. - What is the supply voltage for the TDA18250BHN/C1K?
The supply voltage is 3.3 V. - What is the RF frequency coverage of the TDA18250BHN/C1K?
The RF frequency coverage is up to 1 GHz. - What is the typical noise figure of the TDA18250BHN/C1K?
The typical noise figure is 3.8 dB. - Does the TDA18250BHN/C1K have built-in ESD protection?
Yes, it has 8 kV ESD protection on the RF input and loop-through pins. - What interface does the TDA18250BHN/C1K use?
The TDA18250BHN/C1K uses an I2C-bus interface compatible with 3.3 V microcontrollers. - What are the reference clock frequencies supported by the TDA18250BHN/C1K?
The supported reference clock frequencies are 16 MHz, 24 MHz, 25 MHz, 27 MHz, and 30 MHz. - Is the TDA18250BHN/C1K RoHS compliant?
Yes, it is RoHS compliant. - What is the package type of the TDA18250BHN/C1K?
The package type is 32-HVQFN (5x5 mm). - Does the TDA18250BHN/C1K require external SAW filters?
No, it has fully integrated IF and RF selectivity, eliminating the need for external SAW filters.
