Overview
The TDA18250HN/C1518 is a silicon tuner IC designed by NXP USA Inc., specifically for high-definition cable Set-Top Boxes (STBs) and other consumer video applications. This integrated circuit is optimized for single-streaming digital cable TV reception, supporting all worldwide digital cable standards. It features a single 3.3 V power supply, integrated wideband gain control, and LOW IF (LIF) output, making it a comprehensive solution for modern cable TV systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | NXP USA Inc. | - |
| Package | 48-HVQFN (7x7) | - |
| Function | Tuner | - |
| Voltage - Supply | 3.3 V | V |
| Control Interface | I²C | - |
| RF Frequency Coverage | 42 MHz to 1002 MHz | MHz |
| Maximum Input Power | 106 dBμV | dBμV |
| Tuner Noise Figure | 5 dB (fRF from 42 MHz to 862 MHz), 5.5 dB (fRF > 862 MHz) | dB |
| Phase Noise | -85 dBc/Hz at 10 kHz, -105 dBc/Hz at 100 kHz | dBc/Hz |
| Power Dissipation | 0.91 W | W |
| Image Rejection | 50 dB to 62 dB | dB |
Key Features
- RF frequency coverage up to 1002 MHz
- Integrated wideband gain control
- LOW IF (LIF) output
- Single 3.3 V power supply
- Low power consumption
- High linearity and low noise figure
- Fully integrated IF selectivity, eliminating the need for external SAW filters
- Enhanced RF and IF filters for increased selectivity and adjacent channel filtering
- Alignment free
- Fully integrated oscillators with no external oscillator components required
- I²C-bus interface for microcontroller compatibility, RSSI data access, and die temperature sensor data access
- Lead-free (Pb) manufacturing
Applications
The TDA18250HN/C1518 is primarily used in consumer video applications, particularly in high-definition cable Set-Top Boxes (STBs) and Personal Video Recorder (PVR) boxes. It supports single-streaming digital cable TV reception and is compatible with all worldwide digital cable standards.
Q & A
- What is the primary function of the TDA18250HN/C1518?
The primary function of the TDA18250HN/C1518 is to act as a silicon tuner IC for high-definition cable Set-Top Boxes (STBs) and other consumer video applications. - What is the voltage supply requirement for the TDA18250HN/C1518?
The TDA18250HN/C1518 operates on a single 3.3 V power supply. - What is the RF frequency coverage of the TDA18250HN/C1518?
The RF frequency coverage of the TDA18250HN/C1518 is from 42 MHz to 1002 MHz. - Does the TDA18250HN/C1518 require external SAW filters?
No, the TDA18250HN/C1518 has fully integrated IF selectivity, eliminating the need for external SAW filters. - What interface does the TDA18250HN/C1518 use for communication with microcontrollers?
The TDA18250HN/C1518 uses an I²C-bus interface for communication with microcontrollers. - What are the key benefits of using the TDA18250HN/C1518 in terms of system cost and complexity?
The TDA18250HN/C1518 reduces system cost by eliminating costly components such as low-noise amplifiers and SAW filters. It also simplifies the system design by integrating many functions and reducing the number of external components required. - Is the TDA18250HN/C1518 lead-free and RoHS compliant?
Yes, the TDA18250HN/C1518 is lead-free (Pb) and RoHS compliant. - What is the package type of the TDA18250HN/C1518?
The TDA18250HN/C1518 comes in a 48-HVQFN (7x7) package. - Does the TDA18250HN/C1518 support multiple tuner functions?
Yes, the TDA18250HN/C1518 supports 2 tuner functions, specifically aimed for PVR boxes. - What is the status of the TDA18250HN/C1518 in terms of production?
The TDA18250HN/C1518 is listed as obsolete, meaning it is no longer in active production.
