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NXP Semiconductors TDA18250HN/C1,551
- Part No.:
- TDA18250HN/C1,551
- Manufacturer:
- NXP Semiconductors
- Category:
- Video Processing
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
TDA18250HN/C1,551.pdf
- Description:
- IC VIDEO TUNER 48HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,026
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Product details
Overview
TDA18250HN/C1,551 from NXP Semiconductors is a single-stream silicon cable tuner IC for HD Set-Top Boxes, supporting worldwide digital cable standards including DVB-C and ITU-T J.83B. It delivers 42–1002 MHz RF frequency coverage, 5–6 dB noise figure (42–862 MHz), and low 0.91 W power dissipation while eliminating external SAW filters and LNAs. It enables cost-effective, compact STB designs with integrated IF selectivity and RF loop-through.
For engineers reviewing the TDA18250HN/C1,551 datasheet, TDA18250HN/C1,551 pinout, TDA18250HN/C1,551 application, or TDA18250HN/C1,551 equivalent, key selection criteria include its LIF output architecture, 3.3 V single-supply operation, I²C-based RSSI/temperature monitoring, and HVQFN48 thermal-enhanced package for high-density STB layouts.
Technical Context
The TDA18250HN/C1,551 implements a fully integrated PLL-based synthesizer with on-chip 16 MHz crystal oscillator buffer, enabling single-crystal system design. Its RF front-end includes alignment-free wideband gain control and enhanced RF/IF filtering for >62 dB image rejection.
It generates a LOW IF (LIF) output pair (IFO_P/IFO_N) compatible with downstream demodulators, supports RF loop-through for multi-tuner PVR architectures, and integrates die temperature sensing and RSSI reporting via I²C-bus (SCL/SDA) at 3.3 V logic levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 42–1002 MHz - Covers full global cable spectrum including DOCSIS upstream/downstream and DVB-C channel plans. |
| Noise Figure | 5–6 dB (42–862 MHz) - Enables robust reception in weak-signal urban cable environments without external LNA. |
| Power Dissipation | 0.91 W typical - Reduces thermal load and eliminates need for heatsinking in space-constrained STB PCBs. |
| Image Rejection | 50–62 dB - Suppresses adjacent-channel interference without external filtering components. |
| Supply Voltage | 3.3 V ±10% - Simplifies power delivery with single rail; compatible with standard STB PMIC outputs. |
| Phase Noise | −85 dBc/Hz @ 10 kHz offset - Ensures clean local oscillator performance for low BER in QAM-256 systems. |
| Input Power Handling | +106 dBµV maximum - Withstands high-level cable plant signals without front-end compression or damage. |
Pinout & Package
HVQFN48 plastic thermal-enhanced very thin quad flat package; 7 × 7 × 0.85 mm body, no leads, exposed thermal pad (pin 48), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF_IN (Pin 3) | RF input port | Accepts 75 Ω cable signal; internal ESD protection per JEDEC Class IV. |
| LT (Pin 4) | RF loop-through output | Drives secondary tuner in PVR configurations; maintains impedance match and signal integrity. |
| IFO_P / IFO_N (Pins 30–31) | Differential LIF output | Provides 3.5 MHz ±1 MHz IF to demodulator; eliminates need for balun or AC coupling. |
| SCL / SDA (Pins 35–36) | I²C-bus interface | 3.3 V tolerant; enables real-time RSSI readback and die temperature monitoring. |
| XTAL_P / XTAL_N (Pins 16–17) | Crystal oscillator terminals | Supports 16 MHz fundamental-mode crystal; internal buffer eliminates external driver. |
| VIFAGC (Pin 22) | IF AGC voltage output | Analog voltage proportional to IF signal level; used for system-level gain calibration. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated IF selectivity | Replaces discrete SAW filters and matching networks, reducing BOM count by ≥4 components and PCB area by >15 mm². |
| Single 3.3 V supply operation | Eliminates dual-rail power design complexity and associated decoupling overhead in STB mainboard layout. |
| RF loop-through with gain compensation | Enables seamless dual-tuner PVR functionality without external amplification or level-shifting circuitry. |
| On-die temperature sensor + RSSI | Provides real-time thermal derating and signal health diagnostics over I²C-no external sensors required. |
| Alignment-free architecture | Removes factory tuning steps during STB assembly, cutting test time and calibration labor costs. |
Applications
| Cable Set-Top Box (HD) | Personal Video Recorder (PVR) |
|---|---|
Use Scenario: High-definition digital cable reception in residential STBs with single-stream decoding. IC Role / Device Role / Timing Role: Primary RF-to-LIF silicon tuner delivering compliant IF output to QAM demodulator. Use Value: Eliminates external SAW filter and LNA, reducing total tuner subsystem cost by ~30% and board space by 25%. |
Use Scenario: Dual-tuner recording/playback architecture where one tuner captures live TV while another records. IC Role / Device Role / Timing Role: Master tuner providing RF loop-through signal to slave tuner; synchronized I²C control. Use Value: Enables simultaneous watch-and-record without requiring separate RF splitters or active distribution amplifiers. |
| Digital Cable Modem Termination System (CMTS) Edge QAM | Multi-Room DVR Gateway |
Use Scenario: Edge QAM modulator in headend equipment generating downstream DOCSIS channels. IC Role / Device Role / Timing Role: Reference tuner for signal quality verification and spectral analysis of QAM outputs. Use Value: Provides calibrated, repeatable IF output for BER testing and MER measurement without external downconversion. |
Use Scenario: Whole-home DVR hub distributing recorded content to multiple client devices via MoCA or Ethernet. IC Role / Device Role / Timing Role: Tuner subsystem handling primary channel acquisition and transport stream extraction. Use Value: Integrated RSSI and temperature telemetry supports remote health monitoring and predictive maintenance alerts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar cable tuner applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3542ETJ+T | Wider RF range (47–1218 MHz); higher 1.2 W power; requires external crystal load capacitors. | Supports DOCSIS 3.1 upstream; less optimized for cost-sensitive STB BOM reduction. | Preferred when extended upstream coverage or higher linearity at >1 GHz is required. |
| SI2151-A10-GM | Hybrid analog/digital tuner; 3.3 V supply; lower 0.65 W power; narrower 42–870 MHz RF range. | Limited to legacy DVB-C; lacks RF loop-through and integrated 16 MHz buffer. | Selected for ultra-low-power STBs where PVR functionality is not needed. |
Compared with MAX3542ETJ+T and SI2151-A10-GM, the TDA18250HN/C1,551 uniquely balances full-cable-band coverage, integrated loop-through, and BOM-minimized architecture-making it optimal for mainstream HD STBs targeting production cost and thermal efficiency.
Availability
TDA18250HN/C1,551 is available at Aetrix Electronics and suitable for cable Set-Top Boxes, Personal Video Recorders, and multi-room DVR gateways requiring stable component supply, long-term lifecycle support, and thermal-reliable tuner performance.
Supply support for TDA18250HN/C1,551 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, with leadership in RF and mixed-signal ICs.
The TDA18250HN/C1,551 belongs to NXP's silicon tuner product line, engineered specifically for cost-sensitive, high-volume digital cable reception in Set-Top Boxes-prioritizing integration, thermal efficiency, and system-level BOM simplification.
FAQ
What is the RF input frequency range supported by the TDA18250HN/C1,551?
The TDA18250HN/C1,551 supports an RF input frequency range of 42 MHz to 1002 MHz. This covers all major global digital cable standards including DVB-C, ITU-T J.83B, and DOCSIS downstream channels. The specification is validated across the full band per the NXP short data sheet Rev. 6, with guaranteed performance up to 1002 MHz at maximum gain settings.
Does the TDA18250HN/C1,551 require an external crystal oscillator?
No, the TDA18250HN/C1,551 integrates a complete crystal oscillator circuit with a 16 MHz output buffer. It only requires a 16 MHz fundamental-mode crystal connected to XTAL_P (Pin 16) and XTAL_N (Pin 17); no external oscillator IC or load capacitors are needed. This is confirmed in Section 2 of the NXP short data sheet under "Fully integrated oscillators".
What type of IF output does the TDA18250HN/C1,551 provide?
The TDA18250HN/C1,551 provides a differential LOW IF (LIF) output on pins IFO_P (30) and IFO_N (31), centered at approximately 3.5 MHz with ±1 MHz bandwidth. This LIF architecture eliminates the need for external baluns or IF transformers and directly interfaces with standard QAM demodulators such as the NXP TDA10025 or ST STV0900.
Can the TDA18250HN/C1,551 be used in dual-tuner PVR systems?
Yes, the TDA18250HN/C1,551 includes dedicated RF loop-through (LT) functionality on Pin 4, enabling it to serve as the master tuner in dual-tuner PVR architectures. It drives a second tuner without external amplification, maintaining signal integrity and impedance matching-explicitly cited in the "Features and benefits" section for "2 tuner functions specifically aimed for PVR boxes".
What is the thermal package type of the TDA18250HN/C1,551?
The TDA18250HN/C1,551 uses the HVQFN48 package (SOT619-1): a 7 × 7 × 0.85 mm thermal-enhanced very thin quad flat no-lead package with an exposed thermal pad (Pin 48). This construction improves heat dissipation in high-density STB PCBs and is specified in Table 2 of the NXP short data sheet.
TDA18250HN/C1,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Tuner
- Applications:
- Consumer Video
- Standards:
- -
- Control Interface:
- I2C
- Voltage - Supply:
- 3.3V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 48-HVQFN (7x7)
TDA18250HN/C1,551 FAQ
1.How can I place an order for TDA18250HN/C1,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA18250HN/C1,551 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 TDA18250HN/C1,551 reliable?
The price and inventory of TDA18250HN/C1,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA18250HN/C1,551 is usually 5 days.
3.What payment methods are accepted for TDA18250HN/C1,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA18250HN/C1,551 transactions.
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4.How is shipping managed for TDA18250HN/C1,551?
TDA18250HN/C1,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA18250HN/C1,551 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 TDA18250HN/C1,551?
For technical support, including TDA18250HN/C1,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA18250HN/C1,551 requirements.
6.How does Aetrix verify that TDA18250HN/C1,551 is sourced from the original manufacturer or authorized distributors?
All TDA18250HN/C1,551 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 TDA18250HN/C1,551 meets industry standards.
7.What is the process for return or replacement of TDA18250HN/C1,551?
All TDA18250HN/C1,551 units undergo pre-shipment inspection (PSI). If there is an issue with TDA18250HN/C1,551, 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 TDA18250HN/C1,551 part is unused and in its original packaging.
Return procedure for TDA18250HN/C1,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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