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Infineon Technologies TDA18250AHN/C1,557
- Part No.:
- TDA18250AHN/C1,557
- Manufacturer:
- Infineon Technologies
- Category:
- Video Processing
- Package:
- -
- Datasheet:
-
TDA18250AHN/C1,557.pdf
- Description:
- TDA18250CabSilicTuner
- Quantity:
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Inventory:2,435
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Product details
Overview
TDA18250AHN/C1,557 from NXP Semiconductors is a single-chip silicon tuner IC for digital cable and terrestrial TV reception in Set Top Boxes, operating from 42 MHz to 1002 MHz RF input, featuring 3.8 dB typical noise figure, 8 kV HBM ESD protection on RF_IN and LT pins, and flexible low-IF output (3–7.5 MHz) for demodulator interfacing.
For engineers reviewing the TDA18250AHN/C1,557 datasheet, TDA18250AHN/C1,557 pinout, TDA18250AHN/C1,557 application, or TDA18250AHN/C1,557 equivalent, key selection criteria include RF frequency coverage, integrated IF/RF selectivity eliminating external SAW filters, I²C-bus interface compatibility with 3.3 V microcontrollers, and dual-tuner support via Slave Tuner Output (STO).
Technical Context
The TDA18250AHN/C1,557 integrates RF and IF signal chains with fully embedded synthesizer, crystal oscillator buffer, and automatic gain control. It delivers alignment-free operation using integrated RSSI and temperature sensing, and supports multi-reference clock inputs (16/24/25/27/30 MHz).
Its architecture eliminates external baluns (single-ended RF input), SAW filters (integrated RF/IF selectivity), and RF splitters (integrated STO), while maintaining high immunity to WLAN, LTE, and GSM interferers through optimized front-end linearity and image rejection ≥62 dB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 42–1002 MHz - Covers full DVB-C, DVB-T, and DVB-T2 broadcast bands without external band switching. |
| Noise Figure | 3.8 dB (typ.) at fRF < 862 MHz - Enables robust weak-signal reception in noisy cable plant environments. |
| Image Rejection | ≥62 dB at IF = 5 MHz - Suppresses adjacent-channel interference without external filtering. |
| ESD Protection | 8 kV HBM on RF_IN and LT pins - Reduces or eliminates need for discrete ESD diodes at RF front end. |
| Low-IF Output Range | 3–7.5 MHz - Matches standard demodulator IF input requirements across multiple SoC platforms. |
| Supply Voltage | Single 3.3 V - Simplifies power delivery and eliminates need for multi-rail supplies in STB designs. |
| Phase Jitter | 0.4–0.6° (250 Hz–4 MHz) - Meets stringent timing stability requirements for QAM64/256 and OFDM demodulation. |
Pinout & Package
Package: HVQFN32 (SOT617-3), 5 × 5 × 0.85 mm, thermally enhanced, leadless quad flat package with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RF_IN | Single-ended RF input | Accepts unbalanced 75 Ω cable signal; no external balun required. |
| LT | Loop-through output | Passes RF signal to secondary tuner or splitter; supports daisy-chain topology. |
| IFO_P / IFO_N | Differential low-IF output | Drives demodulator ADC input with 3–7.5 MHz IF; enables DC-coupled interface. |
| XTAL_P / XTAL_N | Crytal oscillator terminals | Supports 16–30 MHz fundamental-mode crystals; internal load caps eliminate external capacitors. |
| SCL / SDA | I²C-bus interface | 3.3 V tolerant; enables configuration, RSSI readback, and AGC monitoring. |
| STO | Slave tuner output | Integrated RF splitter output for dual-tuner architectures; reduces BOM count. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated RF/IF selectivity | Eliminates external SAW filters and associated matching networks, reducing PCB area by ≥15 mm². |
| Integrated crystal oscillator buffer | Drives demodulator/SoC clock input directly-no external buffer IC needed for 16–30 MHz references. |
| On-chip RSSI and temperature sensor | Enables closed-loop signal strength calibration and thermal derating without external ADC or sensors. |
| Enhanced ESD protection | 8 kV HBM on RF_IN and LT pins meets IEC 61000-4-2 Level 4 system-level ESD requirements. |
| Alignment-free tuning | Factory-trimmed synthesizer and AGC eliminate production-line RF alignment steps and test fixtures. |
Applications
| Cable Set Top Box | Terrrestrial DVB-T/T2 Receiver |
|---|---|
Use Scenario: Digital cable TV reception in residential STBs with multi-channel recording and time-shift functionality. IC Role / Device Role / Timing Role: Primary RF tuner converting 50–1002 MHz QAM signals to low-IF for downstream demodulation. Use Value: Integrated STO and loop-through enable dual-tuner PVR systems without external RF splitters or amplifiers. |
Use Scenario: Indoor/rooftop antenna-based DVB-T/T2 reception in portable and fixed consumer receivers. IC Role / Device Role / Timing Role: High-immunity tuner front-end rejecting LTE/GSM cellular interferers near broadcast bands. Use Value: 62 dB image rejection and 3.8 dB NF maintain MER > 32 dB under co-site cellular interference conditions. |
| Hybrid Broadcast-Broadband Terminal | Professional Cable Headend Monitor |
Use Scenario: HbbTV-enabled STBs requiring simultaneous broadcast and IP streaming with minimal RF footprint. IC Role / Device Role / Timing Role: Low-power tuner (0.74 W) enabling fanless enclosure design and thermal compliance. Use Value: Single 3.3 V supply and integrated AGC reduce power management complexity versus multi-rail tuner solutions. |
Use Scenario: Field-deployable spectrum monitoring units verifying signal integrity across cable distribution nodes. IC Role / Device Role / Timing Role: Calibration-grade RSSI reporting via I²C for real-time signal level trending and fault detection. Use Value: On-die temperature sensor compensates RSSI drift across −20°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon tuner applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3542ETJ+T | Higher NF (4.5 dB typ.), requires external crystal load caps, no integrated STO | Lacks dual-tuner support; needs discrete RF splitter for PVR use cases | Select when legacy MAXIM platform reuse is prioritized over ESD robustness and integration. |
| SI2151-A10-GM | Lower RF max (862 MHz), no loop-through pin, 4 kV HBM ESD rating | Not suitable for full 1 GHz DOCSIS 3.1 cable upstream monitoring or extended-band DVB-T2 | Select only for cost-sensitive terrestrial-only receivers where 862 MHz cap is acceptable. |
Compared with MAX3542ETJ+T and SI2151-A10-GM, the TDA18250AHN/C1,557 provides broader RF coverage, superior ESD resilience, and native dual-tuner capability-reducing total system BOM count by up to 7 components in PVR STB designs.
Availability
TDA18250AHN/C1,557 is available at Aetrix Electronics and suitable for cable Set Top Boxes, terrestrial DVB-T/T2 receivers, hybrid broadcast-broadband terminals, and professional signal monitoring equipment requiring stable component supply and long-term lifecycle support.
Supply support for TDA18250AHN/C1,557 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 global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer electronics markets.
The TDA18250AHN/C1,557 belongs to NXP's silicon tuner product line, engineered specifically to replace legacy can-based tuners in digital TV platforms with monolithic, low-cost, high-integration RF solutions for global broadcast standards.
FAQ
What reference clock frequencies does the TDA18250AHN/C1,557 support?
The TDA18250AHN/C1,557 supports five standard crystal reference frequencies: 16 MHz, 24 MHz, 25 MHz, 27 MHz, and 30 MHz. Its integrated crystal oscillator includes programmable load capacitance, eliminating external tuning capacitors and enabling direct connection of fundamental-mode crystals.
Does the TDA18250AHN/C1,557 require external SAW filters?
No. The TDA18250AHN/C1,557 integrates both RF and IF selectivity circuitry, achieving ≥62 dB image rejection and channel selectivity sufficient for DVB-C/T/T2 compliance without external SAW filters. This integration reduces PCB area and eliminates filter matching uncertainties.
How is dual-tuner functionality implemented on this device?
Dual-tuner operation is enabled via the Slave Tuner Output (STO) pin, which provides an internally buffered, split RF path. Combined with the loop-through (LT) pin, it allows one TDA18250AHN/C1,557 to feed two independent demodulator paths-eliminating external splitters and preserving signal integrity in PVR and multi-stream STBs.
What is the maximum input power handling capability?
The TDA18250AHN/C1,557 supports a maximum single-channel RF input power of 115 dBµV (≈ −19 dBm into 75 Ω). This headroom accommodates strong cable plant signals and prevents front-end compression in dense multi-channel environments without external attenuation.
TDA18250AHN/C1,557 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Applications:
- -
- Standards:
- -
- Control Interface:
- -
- Voltage - Supply:
- -
- Mounting Type:
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- Grade:
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- Qualification:
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- Supplier Device Package:
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TDA18250AHN/C1,557 FAQ
1.How can I place an order for TDA18250AHN/C1,557 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA18250AHN/C1,557 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 TDA18250AHN/C1,557 reliable?
The price and inventory of TDA18250AHN/C1,557 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA18250AHN/C1,557 is usually 5 days.
3.What payment methods are accepted for TDA18250AHN/C1,557?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA18250AHN/C1,557 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA18250AHN/C1,557?
TDA18250AHN/C1,557 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA18250AHN/C1,557 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 TDA18250AHN/C1,557?
For technical support, including TDA18250AHN/C1,557 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA18250AHN/C1,557 requirements.
6.How does Aetrix verify that TDA18250AHN/C1,557 is sourced from the original manufacturer or authorized distributors?
All TDA18250AHN/C1,557 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 TDA18250AHN/C1,557 meets industry standards.
7.What is the process for return or replacement of TDA18250AHN/C1,557?
All TDA18250AHN/C1,557 units undergo pre-shipment inspection (PSI). If there is an issue with TDA18250AHN/C1,557, 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 TDA18250AHN/C1,557 part is unused and in its original packaging.
Return procedure for TDA18250AHN/C1,557:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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