Overview
The TDA18275HN/C1 is a high-performance hybrid silicon tuner designed by NXP USA Inc. for terrestrial and cable TV reception. This component supports both analog and digital TV standards, providing a Low IF (LIF) signal to a demodulator for analog TV and/or a channel demodulator for digital TV. It is notable for its alignment-free design, single 3.3 V supply voltage, and worldwide multistandard capabilities, making it a versatile solution for TV system designs.
Key Specifications
| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| fRF | RF frequency | full range of RF input | 42 | - | 1002 | MHz |
| NFtun | tuner noise figure | 75 Ω impedance source; maximum gain; RF < 870 MHz | - | 3.3 | 3.8 | dB |
| NFtun | tuner noise figure | 75 Ω impedance source; maximum gain; 870 MHz ≤ RF ≤ 1002 MHz | - | 3.9 | 4.5 | dB |
| φjit | phase jitter | integrated from 250 Hz to 4 MHz | - | 0.4 | 0.6 | degree |
| αimage | image rejection | worst case, measured at 4 MHz IF frequency and for image levels above 60 dBμV | - | 65 | - | dB |
| CSO | composite second-order distortion | worst interferer over RF frequency with respect to wanted carrier | -70 | - | -65 | dBc |
| CTB | composite triple beat | - | -70 | - | -65 | dBc |
| ICP1dB | 1 dB input compression point | at the tuner input and minimum gain | 120 | - | - | dBμV |
Key Features
- Single 3.3 V supply voltage
- Worldwide multistandard terrestrial and cable capabilities
- Alignment free
- RoHS compliant
- I2C-bus interface compatible with 3.3 V microcontrollers
- Fully integrated oscillators
- Fully integrated RF selectivity (no need for RF tracking filters coils)
- 2 programmable General-Purpose Outputs (GPO)
- Dual IF output ports
- Channel bandwidths: 1.7 MHz, 6 MHz, 7 MHz, 8 MHz, and 10 MHz
- LIF channel center frequency output ranging from 0.8 MHz to 7.5 MHz
- Fully integrated IF selectivity; eliminating the need for external SAW filters
- Large flexibility in the IF filtering stage to ease the matching with various demodulators circuits
- Single-ended RF input, no need for external balun
- Excellent return loss compatible with cable requirements
- Power Level Detector (PLD) embedded
- Integrated gain control
- Self-AGC synchronization mode (VSync) for analog reception
- Very fast tuning time
- Strong immunity to LTE interferers in the digital dividend bandwidth
- Strong immunity to WLAN interferers (802.11 a/b/g/n)
Applications
The TDA18275HN/C1 is designed for use in various TV reception systems, including:
- Terrestrial TV receivers
- Cable TV receivers
- Hybrid analog and digital TV systems
- Set-top boxes
- Digital video recorders (DVRs)
- Integrated digital TVs
Q & A
- What is the TDA18275HN/C1 used for?
The TDA18275HN/C1 is a hybrid silicon tuner used for terrestrial and cable TV reception, supporting both analog and digital TV standards.
- What is the supply voltage for the TDA18275HN/C1?
The TDA18275HN/C1 operates on a single 3.3 V supply voltage.
- Is the TDA18275HN/C1 RoHS compliant?
- What interface does the TDA18275HN/C1 use for communication?
The TDA18275HN/C1 uses an I2C-bus interface compatible with 3.3 V microcontrollers.
- Does the TDA18275HN/C1 require external RF tracking filters or coils?
No, the TDA18275HN/C1 has fully integrated RF selectivity, eliminating the need for external RF tracking filters or coils.
- What are the channel bandwidths supported by the TDA18275HN/C1?
The TDA18275HN/C1 supports channel bandwidths of 1.7 MHz, 6 MHz, 7 MHz, 8 MHz, and 10 MHz.
- Does the TDA18275HN/C1 have built-in gain control?
- How does the TDA18275HN/C1 handle analog reception?
The TDA18275HN/C1 features a self-AGC synchronization mode (VSync) for analog reception.
- Is the TDA18275HN/C1 resistant to LTE and WLAN interferers?
- What is the typical tuning time for the TDA18275HN/C1?
The TDA18275HN/C1 has a very fast tuning time.
- What package type is the TDA18275HN/C1 available in?
The TDA18275HN/C1 is available in a plastic thermal enhanced very thin quad flat package (HVQFN32) with 32 terminals.
