TDA18214AHN/C1,557 - Silicon TV Tuner IC DVB-T | NXP
料号： TDA18214AHN-C1557 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.9 | $7,900.00 |
TDA18214AHN-C1557 概述
A silicon tuner is an integrated RF receiver front-end that replaces the can-tuned varactor modules used in legacy analog televisions. Within the receiver signal chain hierarchy, it sits at the top: antenna or cable input -> silicon tuner (RF amplification, image-reject mixing, channel filtering) -> Low IF output -> demodulator IC -> transport stream. Because tuning, gain control, and filtering are all implemented on-chip, the TDA18214 family dramatically reduces board area, BOM count, and factory alignment effort compared with discrete tuner designs.
Key features of the TDA18214AHN include single-conversion architecture delivering a Low IF signal, full I2C bus control for channel selection and gain programming, support for all digital terrestrial and cable TV standards (DVB-T, DVB-C, ISDB-T, ATSC, DTMB families), and an exposed-pad 40-HVQFN package suitable for compact set-top box and TV main boards. Surface-mount construction supports standard reflow assembly.
Architecturally, the TDA18214 integrates a low-noise RF amplifier, image-reject downconversion mixer, broadband synthesizer, and channel-selection filtering in a single CMOS/BiCMOS die. Delivering LIF directly to the demodulator eliminates SAW-filter-heavy IF stages in many designs, and the digital-controlled gain distribution optimizes linearity versus noise figure across the received channel.
Typical applications include digital set-top boxes, integrated digital TV (iDTV) main boards, USB TV tuner dongles, PC-TV capture cards, and cable/terrestrial hybrid receivers. Its broad standards support lets one design serve multiple regional markets with firmware changes only.
Design consideration: as a 6x6 mm HVQFN with exposed pad, the thermal and ground path depends on the PCB land pattern; the exposed pad must be soldered to a solid ground plane with thermal vias, and the I2C bus requires proper pull-up sizing for reliable 100/400 kHz communication.
This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Note that this part is marked Obsolete (last buy March 31, 2016; last delivery June 30, 2016), so availability is limited to remaining distributor and broker stock as of 2026-10-11.
直接替换替代料： TDA18214AHN-C1557 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TDA18214HN/C1,557
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TDA18254HN/C1,518
✅ 直接替换📋 参考替代料（不在目录中）
TDA18214AHN-C1557 最大额定值与电气特性
| Product Type | Silicon Tuner IC (Video Tuner) |
| Manufacturer | NXP Semiconductors (NXP USA Inc.) |
| Application | TV - digital terrestrial and digital cable reception |
| Broadcast Standards Supported | All digital TV standards (DVB-T etc.) |
| Output Signal | Low IF (LIF) to demodulator |
| Control Interface | I2C serial bus |
| Standard Supported (DigiKey listing) | DVB-T |
| 封装 / 外壳 | 40-VFQFN Exposed Pad |
| Supplier Device Package | 40-HVQFN (6x6 mm) |
| 安装类型 | Surface Mount |
| Part Status | Obsolete |
| Last Time Buy Date | 2016-03-31 |
| Last Delivery Date | 2016-06-30 |
| Packaging | Tray, Bakeable, Multiple in Drypack |
| Minimum Pack Quantity | 2450 |
| Condition | New and original |
TDA18214AHN-C1557 40-hvqfn (6x6 mm) 引脚配置指南
TDA18214AHN-C1557（40-hvqfn (6x6 mm) 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： TDA18214AHN-C1557.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TDA18214AHN-C1557 适用于 6 应用s: Digital Terrestrial Set-Top Boxes, Integrated Digital TV (iDTV) Main Boards, USB TV Tuner Dongles, PC TV Capture Cards, Hybrid Terrestrial/Cable Receivers, Automotive and Mobile Broadcast TV Modules.
Digital Terrestrial Set-Top Boxes
The TDA18214AHN/C1,557 fits DVB-T and multi-standard set-top box front ends because it integrates the entire RF tuner chain - low-noise RF amplification, image-reject downconversion, synthesizer, and channel filtering - in a single 40-HVQFN (6x6 mm) die, replacing discrete tuner modules and cutting BOM count and board area. Delivering a Low IF (LIF) output lets it pair directly with digital demodulator ICs over a short IF trace, while I2C control lets firmware switch between terrestrial and cable standards without hardware changes. Designers should reserve solid ground plane under the exposed pad and keep the IF path short and impedance-controlled to preserve noise performance. Because the part is obsolete (last delivery June 30, 2016), it suits service, repair, and legacy production only.
推荐
Integrated Digital TV (iDTV) Main Boards
In integrated digital television main boards, the TDA18214AHN provides the silicon tuner stage feeding the demodulator inside the TV SoC signal chain. Its support for all digital TV standards allows a single main-board layout to serve DVB-T, DVB-C, and other regional broadcast markets with firmware-only variation, which is a major supply-chain advantage for TV OEMs. The 6x6 mm HVQFN surface-mount package reflows alongside other main-board ICs, unlike can-type tuner modules that need manual insertion. Key layout considerations include isolating the tuner RF input from switching-noise sources on the board and grounding the exposed pad through an array of thermal vias. As the device is discontinued, new TV platforms should adopt active successor tuners from the TDA182 series.
推荐
USB TV Tuner Dongles
Compact USB TV receiver dongles benefit directly from the TDA18214AHN's single-die integration: the tuner plus an external USB demodulator bridge fits within the tight constraints of a stick enclosure. The 40-HVQFN 6x6 mm exposed-pad package minimizes height and footprint, and the LIF output architecture eliminates bulky IF SAW filters in many designs, keeping the RF section small enough for the antenna-in connector to feed the tuner with a minimal matching network. I2C control links the tuner to the bridge IC over two wires. Thermal load is modest at tuner power levels, so a modest ground copper area suffices. Note the part's obsolete status means dongle repairs rely on remaining stock; new dongle designs need an active tuner.
推荐
PC TV Capture Cards
PCIe and PCI TV capture cards use the TDA18214AHN as the RF front end ahead of a digital demodulator and video capture bridge. Its multi-standard coverage (all digital TV standards, DVB-T confirmed in distributor listings) lets one card SKU address multiple geographies, and the silicon tuner's on-chip filtering removes factory alignment steps required by analog tuner modules, lowering manufacturing cost. The Low IF output interfaces cleanly with demodulator IF inputs placed adjacent on the card. Layout should route the 75-ohm antenna input to the tuner with controlled impedance and keep the I2C bus away from the IF signal path to avoid pulling. For continued card production, plan migration to an active tuner family given the 2016 discontinuation.
推荐
Hybrid Terrestrial/Cable Receivers
Hybrid receivers that must tune both terrestrial (DVB-T) and cable (DVB-C) channels use the TDA18214AHN's wide RF coverage and standard-agnostic architecture: the same silicon handles VHF/UHF terrestrial and cable channel plans, with the demodulator selecting the standard under I2C firmware control. This eliminates the dual-tuner or switchable-front-end complexity of earlier designs and reduces the tuning time between source types, improving channel-change user experience. The 40-HVQFN package allows a common PCB footprint across regional product variants. Engineers should verify synthesizer lock time and image-reject performance in the hybrid band plan during validation. As with all uses of this part, its obsolete status constrains it to legacy and service applications.
推荐
Automotive and Mobile Broadcast TV Modules
Mobile broadcast TV receiver modules - historically used in portable navigation devices and in-vehicle entertainment - leveraged the TDA18214AHN's single-die tuner in the compact 6x6 mm HVQFN package, which withstands automotive-style vibration better than mechanical tuner modules because it contains no moving or mechanically tuned elements. The Low IF output and I2C control integrate naturally with mobile demodulator chipsets, and low power consumption suits battery-operated receivers. Design attention should focus on power-supply filtering, since alternator and switching-regulator noise can enter through the RF front end and degrade sensitivity. This application is now strictly legacy: the part's June 30, 2016 final delivery date means automotive service replacements depend on residual broker stock.
推荐
推荐产品汇总
工程参考数据： TDA18214AHN-C1557 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TDA18214HN/C1,557 | TDA18254HN/C1,518 | TDA18292HN/C1 |
|---|---|---|---|---|
| Package | 40-HVQFN (6x6 mm) Exposed Pad | 40-HVQFN (6x6 mm) - same family footprint | 40-HVQFN - verify pin map | 32-HVQFN (5x5 mm) - smaller, not pin-compatible |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Function | Silicon tuner, LIF output to demodulator | Silicon tuner, LIF output | Silicon tuner, robust I2C device | Video tuner IC, I2C |
| Control Interface | I2C serial bus | I2C serial bus | I2C serial bus | I2C serial |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Application | Digital terrestrial and cable TV | Digital terrestrial and cable TV | Digital TV systems | Digital TV system |
关键差异点
- Complete single-die tuner integration （对比 TDA18292HN/C1)
- Multi-standard coverage from one footprint （对比 TDA18254HN/C1,518)
- Lifecycle status - a genuine trade-off （对比 TDA18292HN/C1)
设计说明
The 40-HVQFN (6x6 mm) exposed pad is the primary ground and thermal path for the TDA18214AHN. The PCB land pattern must include a solderable exposed-pad island connected to a solid ground plane through an array of at least 9 thermal vias (approximately 0.3 mm diameter, filled or tented). Partially soldered exposed pads are a leading cause of intermittent I2C failure and degraded RF sensitivity in HVQFN tuner designs. Follow NXP HVQFN application soldering guidelines for paste stencil apertures to avoid bridging on the 0.5 mm pitch perimeter pins.
Keep the Low IF (LIF) output trace from the tuner to the demodulator as short as practical and route it away from the I2C bus and any DC-DC converter nodes. The I2C bus requires pull-up resistors sized for the bus capacitance; at 400 kHz with several devices, keep total bus capacitance under 400 pF and use 2.2k to 4.7k pull-ups depending on supply voltage. Consult the NXP TDA18214 datasheet for the recommended IF coupling network values rather than assuming generic values.
The most common pitfall with this part is lifecycle, not electrical: the TDA18214AHN/C1,557 has been obsolete since the June 30, 2016 last delivery date, so any design based on it has no factory supply guarantee. For production programs, qualify a successor (e.g., TDA1825x family) in parallel. When purchasing broker stock, insist on date-code traceability and bakeable dry-pack handling (the original NXP pack type was Tray, Bakeable, Multiple in Drypack, minimum pack quantity 2450) to avoid moisture-related reflow defects.
合规信息
Compliance data not present in the retrieved web data. The /C1 ordering suffix historically indicates lead-free/RoHS-grade packaging in NXP ordering conventions, but this must be confirmed on the official NXP product page before procurement claims. Condition reported as new and original by broker sources.
