Overview
The TDA18275AHN/C1Y 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, delivering a Low IF (LIF) signal to a demodulator for analog TV and/or a channel demodulator for digital TV. It is optimized for professional video applications, including broadcast systems, set-top boxes, and video capture devices. Although the TDA18275AHN/C1Y is now an obsolete product, it remains a significant example of advanced video processing technology.
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 |
| VCC | supply voltage | - | - | 3.3 | V | |
| Tstg | storage temperature | - | -40 | 150 | °C | |
| Tj | junction temperature | - | - | 150 | °C | |
| Tamb | ambient temperature | -20 | - | - | °C |
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
- Professional video equipment
- Broadcast systems
- Set-top boxes
- Video capture devices
Q & A
- What is the TDA18275AHN/C1Y used for?
The TDA18275AHN/C1Y is a hybrid silicon tuner used for terrestrial and cable TV reception, supporting both analog and digital TV standards.
- What are the key features of the TDA18275AHN/C1Y?
Key features include a single 3.3 V supply voltage, worldwide multistandard capabilities, alignment-free design, RoHS compliance, and fully integrated oscillators and RF selectivity.
- What is the operating voltage of the TDA18275AHN/C1Y?
The operating voltage is 3.3 V.
- Is the TDA18275AHN/C1Y compatible with various microcontrollers?
Yes, it has an I2C-bus interface compatible with 3.3 V microcontrollers.
- What are the channel bandwidths supported by the TDA18275AHN/C1Y?
The supported channel bandwidths are 1.7 MHz, 6 MHz, 7 MHz, 8 MHz, and 10 MHz.
- Does the TDA18275AHN/C1Y require external SAW filters?
No, it has fully integrated IF selectivity, eliminating the need for external SAW filters.
- What is the tuning time of the TDA18275AHN/C1Y?
The TDA18275AHN/C1Y has a very fast tuning time.
- Is the TDA18275AHN/C1Y immune to LTE and WLAN interferers?
Yes, it has strong immunity to LTE interferers in the digital dividend bandwidth and WLAN interferers (802.11 a/b/g/n).
- What are the typical applications of the TDA18275AHN/C1Y?
Typical applications include professional video equipment, broadcast systems, set-top boxes, and video capture devices.
- Is the TDA18275AHN/C1Y still in production?
No, the TDA18275AHN/C1Y is an obsolete product and is no longer in active production.
- Where can I find more information or a replacement for the TDA18275AHN/C1Y?
You can contact the sales team of NXP Semiconductors or other manufacturers for more information or assistance in finding a suitable replacement.
