THS6042ID - 350mA ADSL CPE Line Driver | Texas Instruments
部品番号: THS6042ID ✓ 生産中THS6042ID 概要
A DSL line driver is a specialized interface IC that conditions high-frequency signals for transmission over copper, telephone, or power-line networks. The THS6042 belongs to the broader line-driver and interface-IC hierarchy, where its role is to combine high-speed signal handling with enough output drive to overcome line impedance and losses. Its dual-driver configuration suits equipment requiring more than one transmitted signal channel.
Key characteristics include 350 mA output drive, operation from dual ±12 V supplies, and low distortion of -79 dBc when driving a 100 ohm load with a 2 Vpp signal. The device draws only 8.2 mA of supply current per channel. Its noninverting current noise is 2.1 pA/Hz, and the family supports full-rate ADSL and G.Lite service while remaining compatible with a 1:1 transformer ratio.
The architecture is tailored for low-voltage, high-speed differential line transmission. A high 43 Vpp output swing provides useful dynamic range for overcoming attenuation in subscriber-line networks, while the current capability allows direct coupling to suitable external networks and transformers. Low noise and distortion help preserve signal integrity in the transmit path, particularly when small analog or mixed-signal information is represented by a high-speed line waveform.
Typical applications include ADSL customer-premises equipment, central-office line-interface equipment, PLC line drivers, telephone-line termination circuits, and other high-speed copper-pair transmitters. The THS6042 is especially relevant where a ±12 V rail is already available and the designer needs a dedicated line-driver function rather than a general-purpose operational amplifier.
Design attention should focus on supply decoupling, transformer or termination-network selection, controlled board layout, and thermal behavior at maximum output drive. Keep high-current return paths short and place input and output components to minimize parasitic feedback. Because the device dissipates power in proportion to output voltage and current, verify worst-case load conditions and provide adequate copper area around the SOIC pins.
This page organizes the key electrical characteristics, application guidance, package details, and qualified replacement information into an engineering-focused reference for selecting and implementing the THS6042ID in high-speed DSL line-interface designs.
ドロップイン代替品: THS6042ID — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: THS6042ID （同一形状・フットプリント） — 相違点: Operating Temperature Range, Package, Product Type.
THS6042CDDAR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
THS6042IDG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
THS6042ID 仕様
| Product Type | High-speed dual DSL line driver |
| Driver Configuration | 2 driver channels |
| 最大出力電流 | 350 mA |
| Nominal Supply Voltage | +/-12 V |
| 電源電流 | 8.2 mA per channel |
| Total Harmonic Distortion | -79 dBc with 100 ohm load and 2 Vpp output |
| Noninverting Current Noise | 2.1 pA/Hz |
| Maximum Output Swing | 43 Vpp |
| Supported DSL Service | Full-rate ADSL and G.Lite |
| Transformer Compatibility | 1:1 transformer ratio |
| 動作温度範囲 | -40 C to +85 C |
| パッケージ | 8-pin SOIC |
| 実装タイプ | Surface mount |
THS6042ID 8-pin soic ピン配置ガイド
THS6042ID (8-pin soic パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: THS6042ID.
詳細は データシート をご参照ください。
主な用途
THS6042ID の用途: 6 件s: ADSL Customer-Premises Equipment, Power-Line Communication Transmitter, Central-Office Line Interface, Telephone-Line Termination Circuit, High-Speed Copper-Pair Transmitter, Broadband Remote-Terminal Interface.
ADSL Customer-Premises Equipment
The THS6042ID fits the transmit stage of ADSL customer-premises equipment because it combines up to 350 mA of output drive with operation from a ±12 V supply. Its low distortion of -79 dBc into a 100 ohm load at 2 Vpp preserves waveform quality through a transformer-coupled line interface. The device supports both full-rate ADSL and G.Lite and is compatible with a 1:1 transformer ratio, making it suitable for designs that reuse an existing dual-rail transmit architecture. Its principal design trade-off is higher power use than a low-voltage CMOS line driver when operated continuously at large signal amplitudes.
おすすめ
Power-Line Communication Transmitter
The THS6042ID is suitable for power-line communication transmitters that require a high-current output stage to overcome attenuation in a wired communication channel. Its 350 mA drive capability and 43 Vpp output swing provide useful signal range, while the -79 dBc distortion specification limits unwanted harmonics when driving a 100 ohm load at 2 Vpp. The 8.2 mA per-channel supply current also helps control consumption in continuously transmitting equipment. The line filter, coupling network, protective circuitry, and isolation strategy must be designed independently for the deployed power network and regulatory environment.
おすすめ
Central-Office Line Interface
The THS6042ID can serve as the high-speed line transmitter in central-office interface equipment where multiple DSL channels require consistent drive into terminated copper pairs. Its dual-driver configuration supports two driven channels in one 8-pin SOIC, reducing board area compared with separate single-channel solutions. The 350 mA output current, 43 Vpp swing, and low 2.1 pA/Hz noninverting current noise support signal integrity in demanding line paths. Thermal qualification must account for maximum continuous transmit duty cycle, while transformer and termination components should be placed to minimize loop area and parasitic feedback.
おすすめ
Telephone-Line Termination Circuit
The THS6042ID is applicable to telephone-line termination and transmit circuits because it is engineered as a high-speed line driver rather than a conventional low-power amplifier. Its 350 mA current capability allows it to drive the intended terminated network, and the ±12 V operating point provides useful signal swing for broadband line signals. Compatibility with a 1:1 transformer ratio simplifies the use of standard isolation or coupling transformers. Engineers should validate pulse behavior, channel bandwidth, return loss, and distortion at the actual line length because those system parameters are not determined by the component specifications alone.
おすすめ
High-Speed Copper-Pair Transmitter
The THS6042ID can be used in specialized copper-pair transmitters where high output current and controlled distortion are more important than minimum power consumption. Its 43 Vpp output swing and low distortion into a 100 ohm load are useful when the line requires a comparatively large signal amplitude. The dual ±12 V supply architecture is compatible with established telecom analog designs, while 8.2 mA supply current per channel keeps baseline demand controlled. PCB implementation should preserve short supply connections and carefully terminate unused inputs and outputs according to the manufacturer guidance.
おすすめ
Broadband Remote-Terminal Interface
The THS6042ID fits broadband remote-terminal equipment that sends high-speed signals between a customer location and a central office. Its support for full-rate ADSL and G.Lite allows designers to reuse the transmitter across different access-service profiles, while the 350 mA drive capability provides margin for line attenuation and transformer loading. The low -79 dBc distortion at a 2 Vpp output into 100 ohms supports clean signal generation. A robust implementation should include defined test points, controlled impedance for high-frequency routing, and protection appropriate to the external line interface.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: THS6042ID — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | THS6042CDDAR | THS6042IDG4 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin SOIC | 8-pin SOIC - same package | 8-pin SOIC - same package |
| Product Type | Dual high-speed DSL line driver | THS6042-family DSL line driver | THS6042-family DSL line driver |
| Ordering Difference | THS6042ID | CDDAR environmental and ordering suffix | G4 environmental and ordering suffix |
主な差別化要因
- Purpose-built high-current DSL line drive （vs THS6042CDDAR)
- Low distortion for transformer-coupled line transmission （vs THS6042IDG4)
- Compact dual-channel implementation （vs THS6042CDDAR)
設計ノート
Place the input, output, and decoupling components directly beside their associated THS6042ID pins. Keep the ±12 V current loops compact and provide a low-impedance return path to the supply plane. Because the driver can reach 350 mA, trace widths and copper connections should be evaluated for the maximum continuous channel load rather than only for signal-routing convenience.
Separate the high-current output path from sensitive input and reference nodes to minimize feedback through shared supply impedance. Route the line-driver output toward its transformer or termination network without long loops that can pick up noise. Keep unused-input and unused-output states consistent with the manufacturer guidance rather than leaving high-impedance nodes floating.
Estimated: with a 12 V output swing and 350 mA output current, the output load power is 4.2 W, calculated as 12 V times 0.35 A. Actual device dissipation depends on the internal topology, supply levels, load waveform, and duty cycle. Check the worst-case continuous-drive condition, provide adequate board copper, and use thermal measurement when the operating profile is severe.
Do not interpret the 350 mA rating as a guarantee that any external line or transformer can be driven continuously without thermal analysis. Confirm the maximum output swing, load behavior, supply limits, and unused-channel configuration in the manufacturer datasheet. Also verify that a proposed suffix has the required temperature grade, environmental compliance, traceability, and production status before releasing it as a drop-in part.
コンプライアンス情報
The G4 suffix identifies an environmental-ordering variant, but explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status was not established for this exact ordering code. Confirm the current manufacturer product declaration and material-compliance documentation before production release.