Overview
The TDA18250HN/C1557 is a cable silicon tuner IC designed by NXP USA Inc., specifically for high-definition cable Set-Top Boxes (STBs) that support single streaming. This integrated circuit is optimized to reduce system costs by integrating components such as low-noise amplifiers and surface acoustic wave (SAW) filters, thereby simplifying the overall system design.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| RF Frequency (fRF) | edge | 42 | - | 1002 | MHz |
| Maximum Input Power (Pi(max)) | - | - | 106 | dBμV | |
| Tuner Noise Figure (NFtun) at fRF from 42 MHz to 862 MHz | - | 5 | 6 | dB | |
| Tuner Noise Figure (NFtun) at fRF > 862 MHz | - | 5.5 | - | dB | |
| Phase Noise (φn) at 10 kHz | worst case in the RF frequency range | -85 | - | dBc/Hz | |
| Phase Noise (φn) at 100 kHz | worst case in the RF frequency range | -105 | - | dBc/Hz | |
| Power Dissipation (P) | - | - | 0.91 | W | |
| Image Rejection (αimage) | - | 50 | 62 | dB | |
| Supply Voltage (VCC) | - | -0.3 | 3.6 | V |
Key Features
- I2C-bus interface providing 3.3 V microcontroller compatibility, Received Signal Strength Indicator (RSSI) data access, and die temperature sensor data access.
- Lead-free (Pb) manufacturing, compliant with RoHS standards.
- Automatic Gain Control (AGC) and selectivity features to enhance signal quality.
- Integrated low-noise amplifiers and surface acoustic wave (SAW) filters to reduce external component requirements.
Applications
The TDA18250HN/C1557 is primarily used in high-definition cable Set-Top Boxes (STBs) and Personal Video Recorders (PVRs) that require single streaming capabilities. It is also suitable for other cable TV applications where a compact, low-power, and high-performance tuner is necessary.
Q & A
- What is the primary application of the TDA18250HN/C1557? The primary application is in high-definition cable Set-Top Boxes (STBs) and Personal Video Recorders (PVRs).
- What is the RF frequency range of the TDA18250HN/C1557? The RF frequency range is from 42 MHz to 1002 MHz.
- Does the TDA18250HN/C1557 have an I2C-bus interface? Yes, it has an I2C-bus interface for microcontroller compatibility and data access.
- What is the maximum input power the TDA18250HN/C1557 can handle? The maximum input power is 106 dBμV.
- Is the TDA18250HN/C1557 lead-free and RoHS compliant? Yes, it is lead-free and RoHS compliant.
- What is the typical power dissipation of the TDA18250HN/C1557? The typical power dissipation is 0.91 W.
- What is the image rejection capability of the TDA18250HN/C1557? The image rejection is typically 62 dB.
- Does the TDA18250HN/C1557 integrate low-noise amplifiers and SAW filters? Yes, it integrates these components to reduce external component requirements.
- What is the supply voltage range for the TDA18250HN/C1557? The supply voltage range is from -0.3 V to 3.6 V.
- What type of package does the TDA18250HN/C1557 come in? It comes in an HVQFN48 plastic thermal enhanced very thin quad flat package.
