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NXP Semiconductors TDA18271HD/C2,551
- Part No.:
- TDA18271HD/C2,551
- Manufacturer:
- NXP Semiconductors
- Category:
- Video Processing
- Package:
- 64-PowerLFQFN
- Datasheet:
-
TDA18271HD/C2,551.pdf
- Description:
- IC VIDEO SILICON TUNER 64HLFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,723
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Product details
Overview
TDA18271HD/C2,551 from NXP Semiconductors is a silicon TV tuner IC for terrestrial analog and digital TV reception, delivering low-IF output to demodulators or channel decoders. It integrates RF tracking filters, IF selectivity, crystal oscillator, and dual-tuner synchronization logic. Key specs include 45–864 MHz RF range, 5.5 dB noise figure, −89 dBc/Hz phase noise (1 kHz), 65 dB image rejection, and −82 dBm DVB-T sensitivity.
For engineers reviewing the TDA18271HD/C2,551 datasheet, TDA18271HD/C2,551 pinout, TDA18271HD/C2,551 application, or TDA18271HD/C2,551 equivalent, this page provides verified functional context, validated pin roles, multistandard TV/FM interface details, and real-world dual-tuner configuration guidance - all grounded in NXP's Rev. 04 product data sheet.
Technical Context
The TDA18271HD/C2,551 implements a dual-synthesizer architecture: a main synthesizer for RF-to-IF downconversion and a calibration synthesizer for on-chip RF tracking filter and image rejection tuning. Its polyphase RF and IF filters enable image rejection without external SAW components.
It supports master/slave dual-tuner operation via MASTERSYNC and FREEZE signals, with XTOUT_MS pin voltage selection (0 V–0.1VCC = master; 0.4VCC–0.6VCC = slave). Crystal input is fixed at 16 MHz, and XTOUTP/XTOUTN provide buffered sine-wave output for driving secondary tuners or demodulators like TDA8295.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 45–864 MHz - covers full terrestrial TV band (VHF/UHF) and FM radio input via dedicated FM_IN pin. |
| Noise Figure | 5.5 dB typ - ensures high sensitivity for weak signal reception in noisy environments. |
| Phase Noise | −89 dBc/Hz @ 1 kHz offset - minimizes reciprocal mixing and preserves adjacent-channel selectivity. |
| Image Rejection | 65 dB min - achieved via integrated polyphase mixer and calibration, eliminating need for external image-reject filters. |
| Digital Sensitivity | −82 dBm @ DVB-T 64-QAM 2/3, BER = 2×10⁻⁴ - enables robust reception under multipath conditions. |
| Power Supply | Single 3.3 V - simplifies power design and reduces BOM count versus legacy 5 V/12 V tuner solutions. |
| Crystal Reference | 16 MHz - drives internal PLLs; XTOUTP/XTOUTN deliver buffered output for multi-tuner clock distribution. |
Pinout & Package
Package: HLQFN64R - plastic thermal-enhanced low-profile quad flat package, 9 × 9 × 1.6 mm, 64-terminal, leadless, resin-based (SOT903-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF_IN (10) | Unbalanced RF input | Primary antenna interface for TV signals; supports up to 103 dBµV input compression level. |
| FM_IN (8) | Unbalanced FM input | Dedicated path for 76–108 MHz FM radio; independent LNA optimized for FM bandwidth. |
| STO (15) | Slave tuner output | Drives RF input of second TDA18271HD in dual-tuner systems; gain auto-compensated via MASTERSYNC/FREEZE. |
| LT (13) | Loop-through output | 0 dB gain pass-through for cascading tuners or feeding auxiliary devices without signal loss. |
| XTALP/XTALN (26,27) | Crystal oscillator inputs | Accept 16 MHz fundamental-mode crystal (e.g., NDK NX5032); require 5.6 pF shunt capacitor per datasheet. |
| XTOUTP/XTOUTN (30,31) | Crystal output buffer | Deliver symmetrical 16 MHz sine wave to slave tuner or TDA8295 IF demodulator; load-matching critical for jitter control. |
| SCL/SDA (38,39) | I²C-bus interface | 3.3 V/5 V tolerant; supports up to four tuners via programmable MA[1:0] address bits on AS pin. |
| MASTERSYNC (19) | Dual-tuner sync signal | Enables time-aligned tuning across master/slave pair; required for simultaneous channel scanning. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated RF tracking filters | Eliminates external varactor-tuned LC tanks; enables automatic frequency alignment across full 45–864 MHz band. |
| No external SAW filters required | On-die IF polyphase filtering achieves 1.5/6/7/8 MHz channel bandwidths - reduces board area and insertion loss. |
| Three configurable standby modes | Includes device-off mode (lowest power), crystal-on standby, and full-loop-through active standby - supports dynamic power management. |
| Integrated wide-band AGC | Combines RF and IF AGC loops with programmable TOP points (EB22 registers) for seamless gain control across analog/digital standards. |
| Alignment-free calibration | On-chip CAL PLL performs RFCAL and IRCAL during startup - no factory trimming or external test equipment needed. |
Applications
| Hybrid Analog/Digital TV Receiver | Dual-Tuner PCTV System |
|---|---|
Use Scenario: Integrated TV tuner in set-top boxes supporting both legacy NTSC/PAL and modern DVB-T/MPEG-2 decoding. IC Role / Device Role / Timing Role: Primary RF front-end providing low-IF output to TDA10048HN channel decoder and analog demodulator. Use Value: Single-chip solution replaces discrete can tuner + SAW + VCO, reducing footprint by >60% and power by 40% vs. legacy designs. | Use Scenario: Picture-in-Picture (PiP) or time-shift recording in PC-TV cards with independent main and secondary tuners. IC Role / Device Role / Timing Role: Master TDA18271HD/C2,551 drives slave unit via STO and synchronizes tuning via MASTERSYNC/FREEZE. Use Value: Enables zero-latency channel switching between tuners and eliminates inter-tuner interference through calibrated LO sharing. |
| FM Radio Front-End | Multi-Standard Broadcast Receiver |
Use Scenario: Embedded FM radio in DVD recorders or smart TVs using shared antenna infrastructure. IC Role / Device Role / Timing Role: Configured via I²C to route FM_IN signal through dedicated LNA and IF path; outputs baseband audio to codec. Use Value: Avoids separate FM tuner IC; leverages same 16 MHz crystal and power domain as TV function - lowers BoM cost. | Use Scenario: Global broadcast receiver deployed across Europe (DVB-T), North America (ATSC), and Asia (ISDB-T). IC Role / Device Role / Timing Role: Multistandard support enabled by software-configurable IF level (EP4[4:2]), AGC mode (EP3[4:3]), and standard ID (EP3[2:0]). Use Value: One hardware platform serves all regions - reduces inventory complexity and accelerates regional certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon tuner applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3543ETJ+T | Higher 7.5 dB NF; requires external 27 MHz crystal; no integrated slave output or loop-through. | Targeted at single-tuner ATSC receivers; lacks dual-tuner sync protocol and FM_IN path. | Choose when prioritizing ATSC performance over multistandard flexibility and system integration. |
| SI2151-A10-GM | Lower 4.8 dB NF; supports DVB-T2/DTMB; uses 24 MHz crystal; no FM radio mode. | Optimized for next-gen digital-only deployments; no analog TV or FM capability. | Choose for DVB-T2 field trials or emerging markets where analog sunset is complete. |
Compared with MAX3543ETJ+T and SI2151-A10-GM, the TDA18271HD/C2,551 uniquely combines worldwide analog/digital TV + FM support, dual-tuner synchronization, and full on-die filtering - making it optimal for hybrid broadcast platforms requiring backward compatibility and compact layout.
Availability
TDA18271HD/C2,551 is available at Aetrix Electronics and suitable for hybrid TV receivers, dual-tuner PCTV systems, embedded FM radios, and multistandard broadcast equipment requiring stable component supply across global production cycles.
Supply support for TDA18271HD/C2,551 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a Dutch semiconductor company specializing in secure connectivity solutions for automotive, industrial, and consumer electronics.
The TDA18271HD/C2,551 belongs to NXP's Silicon Tuner product line, designed to replace legacy can-based TV tuners with monolithic CMOS ICs that integrate RF, IF, and control functions - targeting size reduction, power efficiency, and multistandard interoperability in broadcast receivers.
FAQ
What is the primary function of the TDA18271HD/C2,551 in a TV receiver system?
The TDA18271HD/C2,551 serves as a fully integrated silicon TV tuner IC that receives terrestrial analog and digital TV signals (45–864 MHz), performs RF-to-low-IF downconversion, and delivers conditioned IF output to demodulators like TDA10048HN. It replaces traditional can tuners while integrating RF tracking filters, IF selectivity, and dual-tuner synchronization logic - all within a single HLQFN64R package.
Does the TDA18271HD/C2,551 support both analog and digital TV standards globally?
Yes, the TDA18271HD/C2,551 is explicitly designed for worldwide multistandard terrestrial reception, supporting all analog TV standards (NTSC, PAL, SECAM) and digital standards (DVB-T, ATSC, ISDB-T) as confirmed in its general description and quick reference data. Its software-configurable IF level, AGC mode, and standard ID registers (EP3[2:0]) enable seamless adaptation across regional broadcast requirements without hardware changes.
How does the TDA18271HD/C2,551 implement dual-tuner operation?
The TDA18271HD/C2,551 implements dual-tuner operation via master/slave configuration: one unit operates in Master mode (XTOUT_MS = 0–0.1VCC) providing 16 MHz clock via XTOUTP/XTOUTN, while the second operates in Slave mode (XTOUT_MS = 0.4–0.6VCC) using that clock. Synchronization is enforced through MASTERSYNC and FREEZE pins, enabling time-aligned tuning and automatic gain compensation on the STO output - eliminating inter-tuner drift.
What crystal specifications are required for reliable operation of the TDA18271HD/C2,551?
The TDA18271HD/C2,551 requires a 16 MHz fundamental-mode crystal with ≥100 µW drive level capability and a typical shunt capacitance of 5.6 pF. NXP validates performance with specific part numbers including NDK NX5032, Siward SX-5032, TXC 9C series, and Chungho Elcom HC49S profile crystals. Deviations may impact phase noise, lock stability, or calibration accuracy.
Can the TDA18271HD/C2,551 be used for FM radio reception?
Yes, the TDA18271HD/C2,551 supports FM radio reception via its dedicated FM_IN pin (pin 8), which connects to an optimized FM LNA. Configuration is performed over I²C by setting FM_RFN = 1 (EP4[7]) and selecting appropriate AGC mode (AGCK_MODE = 11 for FM). The IC outputs baseband audio-compatible IF signals and maintains the same 3.3 V supply and 16 MHz crystal infrastructure as its TV function.
TDA18271HD/C2,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 64-PowerLFQFN
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Tuner
- Applications:
- Consumer Video
- Standards:
- -
- Control Interface:
- I2C
- Voltage - Supply:
- 3.13V ~ 3.47V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 64-HLQFN (9x9)
TDA18271HD/C2,551 FAQ
1.How can I place an order for TDA18271HD/C2,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA18271HD/C2,551 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TDA18271HD/C2,551 reliable?
The price and inventory of TDA18271HD/C2,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA18271HD/C2,551 is usually 5 days.
3.What payment methods are accepted for TDA18271HD/C2,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA18271HD/C2,551 transactions.
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4.How is shipping managed for TDA18271HD/C2,551?
TDA18271HD/C2,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA18271HD/C2,551 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TDA18271HD/C2,551?
For technical support, including TDA18271HD/C2,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA18271HD/C2,551 requirements.
6.How does Aetrix verify that TDA18271HD/C2,551 is sourced from the original manufacturer or authorized distributors?
All TDA18271HD/C2,551 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDA18271HD/C2,551 meets industry standards.
7.What is the process for return or replacement of TDA18271HD/C2,551?
All TDA18271HD/C2,551 units undergo pre-shipment inspection (PSI). If there is an issue with TDA18271HD/C2,551, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TDA18271HD/C2,551 part is unused and in its original packaging.
Return procedure for TDA18271HD/C2,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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