Overview
The TDA18250HN/C1,557 from NXP USA Inc. is a highly integrated cable silicon tuner IC designed for high-definition cable Set-Top Boxes (STBs) and other digital TV applications. This IC is optimized to support worldwide digital cable standards and offers a comprehensive solution for RF front-end processing. It features a single 3.3 V power supply, low power consumption, and high linearity, making it an efficient choice for both portable and fixed applications. The TDA18250HN/C1,557 eliminates the need for costly external components such as low-noise amplifiers and Surface Acoustic Wave (SAW) filters, thereby reducing the overall system cost and complexity.
Key Specifications
| Parameter | Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| RF frequency (fRF) | edge | 42 | - | 1002 | MHz |
| Maximum input power (Pi(max)) | - | - | 106 | dBμV | |
| Tuner noise figure (NFtun) | fRF from 42 MHz to 862 MHz | - | 5 | 6 | dB |
| Tuner noise figure (NFtun) | fRF > 862 MHz | - | 5.5 | - | dB |
| Phase noise (φn) | 10 kHz | - | -85 | - | dBc/Hz |
| Phase noise (φn) | 100 kHz | - | -105 | - | dBc/Hz |
| Power dissipation (P) | - | - | 0.91 | W | |
| Image rejection (αimage) | - | 50 | 62 | - | dB |
| Supply voltage (VCC) | - | -0.3 | - | 3.6 | V |
| Operating temperature | - | -40 | - | 85 | °C |
Key Features
- RF frequency coverage up to 1002 MHz.
- Integrated wideband gain control and LOW IF (LIF) output.
- Single 3.3 V power supply.
- Low power consumption and high linearity.
- Supports multistandard cable receptions, including DVB-T and DVB-T2.
- Fully integrated IF selectivity, eliminating the need for external SAW filters.
- RF Loop-Through (LT) and enhanced RF and IF filters for increased selectivity and adjacent channel filtering.
- Alignment free and fully integrated oscillators with no external oscillator components required.
- I2C-bus interface for microcontroller compatibility, Received Signal Strength Indicator (RSSI) data access, and die temperature sensor data access.
- Lead-free (Pb) manufacturing.
Applications
- Digital terrestrial television receivers.
- Set-top boxes (STBs).
- Integrated digital TV modules).
- Portable TV devices).
- Automotive infotainment systems).
- Consumer electronics with digital TV functionality).
- Cable modem applications and digital TVs where reliable tuning is critical).
Q & A
- Q: What is the operational voltage of the TDA18250HN/C1,557?
A: The operational voltage required is 3.3 V.
- Q: Does the TDA18250HN/C1,557 support DVB-T2 applications?
A: Yes, it is optimized to support both DVB-T and DVB-T2 digital TV standards).
- Q: What is the temperature range for this product?
A: The operational temperature range is between -40°C to +85°C).
- Q: Does the IC require external components?
A: While it minimizes the need for external components, a few passive components may still be necessary depending on the application design).
- Q: Is there a need for a heatsink when operating this IC?
A: Typically, it operates efficiently without a heatsink, but thermal management may be required depending on the application and environmental conditions).
- Q: What is the package type of the TDA18250HN/C1,557?
A: It comes in a 48-VFQFN (7x7) exposed pad package).
- Q: Is the TDA18250HN/C1,557 RoHS compliant?
A: Yes, it is lead-free (Pb) and RoHS compliant).
- Q: What is the warranty period for the TDA18250HN/C1,557?
A: Different suppliers offer varying warranty periods, such as a 1-year warranty from Ovaga).
- Q: How can I obtain detailed information about the TDA18250HN/C1,557, such as application notes and datasheets?
A: You can find comprehensive details on the NXP website, or through suppliers like Ovaga and Bowell Electronics).
- Q: What is the return or replacement process for the TDA18250HN/C1,557?
A: Returns or replacements are accepted under specific conditions, such as reporting defects within a certain period and obtaining Return Authorization from the supplier).
