Overview
The TDA18250BHN/C1E is a silicon tuner IC designed by NXP USA Inc., specifically for use in worldwide cable and terrestrial digital Set Top Boxes (STB). This component is engineered to ensure low system costs by integrating several key functions, reducing the need for external components. It is compliant with the latest environmental standards, including ROHS certification and the REACH directive, making it an environmentally friendly option.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 3.3 | V |
| RF Frequency Coverage | Up to 1 GHz | |
| Low IF Output Range | 3 MHz to 7.5 MHz | |
| Noise Figure (Typical) | 3.8 dB | |
| ESD Protection (RF_IN and LT pins) | 8 kV (HBM) | |
| Package Type | HVQFN32 (5x5 mm) | |
| Reference Clock Frequencies | 16 MHz, 24 MHz, 25 MHz, 27 MHz, 30 MHz |
Key Features
- Single 3.3 V supply voltage
- Low-power consumption
- High linearity and very low noise figure
- High immunity to wireless interferers (WLAN, LTE, GSM)
- I2C-bus interface compatible with 3.3 V microcontrollers
- Integrated splitter for dual tuner applications (Slave Tuner Output - STO)
- Fully integrated IF and RF selectivity, eliminating the need for external SAW filters and Low-Noise Amplifiers
- Crystal oscillator output buffer to drive demodulator, SoC, or slave tuner
- Easy on-board integration and efficient PCB design
Applications
The TDA18250BHN/C1E is primarily used in digital Set Top Boxes (STB) for both cable and terrestrial TV reception. Its features make it suitable for a variety of digital TV applications where low system cost, high performance, and ease of integration are critical.
Q & A
- What is the primary application of the TDA18250BHN/C1E?
The primary application is in digital Set Top Boxes (STB) for cable and terrestrial TV reception. - What is the supply voltage for the TDA18250BHN/C1E?
The supply voltage is 3.3 V. - What is the RF frequency coverage of the TDA18250BHN/C1E?
The RF frequency coverage is up to 1 GHz. - Does the TDA18250BHN/C1E require external SAW filters or Low-Noise Amplifiers?
No, it has fully integrated IF and RF selectivity, eliminating the need for these external components. - What is the noise figure of the TDA18250BHN/C1E?
The typical noise figure is 3.8 dB. - Is the TDA18250BHN/C1E compliant with environmental standards?
Yes, it is ROHS compliant and meets the REACH directive. - What is the ESD protection level for the RF_IN and LT pins?
The ESD protection level is 8 kV (HBM). - What are the supported reference clock frequencies?
The supported frequencies are 16 MHz, 24 MHz, 25 MHz, 27 MHz, and 30 MHz. - Does the TDA18250BHN/C1E support dual tuner applications?
Yes, it has an integrated splitter for dual tuner applications (Slave Tuner Output - STO). - How does the TDA18250BHN/C1E interface with microcontrollers?
It uses an I2C-bus interface compatible with 3.3 V microcontrollers.
