THS6043CD - 350mA ±12V ADSL Line Driver | Texas Instruments
部品番号: THS6043CD ✓ 生産中THS6043CD 概要
An ADSL line driver is a high-current differential output amplifier used at the customer-premises side of a broadband access interface. It sits between the codec or transceiver and the line-transformer network, providing sufficient current and voltage swing to drive a copper pair through the transformer while limiting bandwidth and noise that could disturb downstream channels. In the electronics hierarchy, the THS6043CD is a high-speed interface IC and line-driver circuit rather than a general-purpose precision amplifier.
The THS6043CD supports 120 MHz device bandwidth and provides differential output swing above 40 Vpp into a 200-ohm load with ±12 V supplies. Its noninverting current-noise density is approximately 2.1 pA/√Hz, helping limit broadband noise coupled through the hybrid into the downstream channel. A 43-Vpp differential output swing is identified for the THS6043 family at a 200-ohm load, giving the line driver useful headroom for transformer and copper-pair interfaces.
A dedicated shutdown function reduces quiescent current to approximately 300 µA per channel when the circuit is inactive. This low-power behavior is useful in CPE equipment that must reduce consumption between active communication periods. The dual-channel organization also allows one device to serve both directions of a line interface, reducing component count and helping keep transformer-driver routing symmetrical.
The THS6043CD is suitable for full-rate ADSL and G.Lite line cards, splitter or filter modules, central-office line-interface equipment, and test equipment that emulates subscriber-line conditions. Its 14-pin SOIC format supports conventional PCB assembly, while the high output-current capability is the defining consideration when selecting a line driver for transformer-coupled DSL interfaces.
Designers should verify external transformer ratios, load impedance, supply sequencing, and total channel dissipation before layout. Keep output-current paths short, provide adequate input and output bypassing, and confirm that the selected SOIC copper area limits junction-temperature rise. The shutdown pins should be controlled only after the downstream interface is in a safe state.
This product page combines the THS6043CD electrical identity, verified package information, drop-in alternatives, interface applications, and practical implementation guidance to support faster component selection and PCB design.
ドロップイン代替品: THS6043CD — 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: THS6043CD （同一形状・フットプリント） — 相違点: Maximum Output Current, Package, Product Type.
THS6043ID
✅ ドロップイン価格はお問い合わせください
データシートを見る →THS6043IDR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
THS6043CD 仕様
| Product Type | Dual ADSL CPE line driver |
| Number of Driver Channels | 2 channels |
| 最大出力電流 | 350 mA per channel |
| Nominal Supply | ±12 V |
| Device Bandwidth | 120 MHz |
| Differential Output Swing | 43 Vpp into a 200-ohm load |
| Noninverting Current-Noise Density | 2.1 pA/√Hz |
| Shutdown Quiescent Current | 300 µA per channel |
| パッケージ | 14-pin SOIC |
| Package Width | 3.90 mm |
| 実装タイプ | Surface mount |
THS6043CD 3.90 mm ピン配置ガイド
THS6043CD (3.90 mm 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: THS6043CD.
詳細は データシート をご参照ください。
主な用途
THS6043CD の用途: 6 件s: Full-Rate ADSL CPE Line Interface, G.Lite Customer Premises Equipment, ADSL Splitter and Filter Module, Central-Office Line Interface Equipment, Broadband Copper-Pair Test Equipment, Transformer-Coupled DSL Interface Card.
Full-Rate ADSL CPE Line Interface
The THS6043CD fits a full-rate ADSL customer-premises line driver because each channel can deliver 350 mA and the device operates from ±12 V supplies. It is compatible with a 1:1 transformer ratio, allowing the two amplifier channels to drive a bridged transformer interface efficiently. The documented 120 MHz bandwidth supports the line-driver function, while the approximately 2.1 pA/√Hz noninverting current-noise density helps limit broadband current noise. Designers should verify transformer loading, attenuation, output saturation, and the completed channel's return loss against the ADSL system requirements.
おすすめ
G.Lite Customer Premises Equipment
The THS6043CD is suitable for G.Lite CPE because it is identified for G.Lite operation and can drive a 1:1-ratio isolation transformer from ±12 V supplies. Two channels per package simplify the transmit and receive paths when the line interface uses a bridged transformer arrangement. Its 350 mA per-channel current capability provides margin for transformer and termination loading, but the design must still account for copper-pair attenuation and the system's spectral mask. Bypass placement and output routing should preserve the device's high-frequency behavior.
おすすめ
ADSL Splitter and Filter Module
The THS6043CD can provide the high-current differential drive required in an ADSL splitter or filtering module that connects to subscriber copper pair through a transformer. Its two channels support symmetrical line-driver routing, while the 43 Vpp differential output swing into a 200-ohm load provides useful voltage headroom. The approximately 2.1 pA/√Hz current-noise density is relevant when preserving signal quality through the passive network. Component placement should minimize loop area around power and output-current paths to reduce coupling into sensitive filtering stages.
おすすめ
Central-Office Line Interface Equipment
The THS6043CD is applicable to line-interface equipment requiring a dual high-current driver for transformer-coupled broadband circuits. A 350 mA per-channel capability and operation from ±12 V suit low-impedance line networks, while 120 MHz bandwidth provides ample device-level bandwidth for the intended ADSL channel. The low-power shutdown state, approximately 300 µA per channel, is useful in equipment that spends time between active line periods. Engineers should calculate channel dissipation and verify shutdown sequencing before integrating it into a shared line-card power architecture.
おすすめ
Broadband Copper-Pair Test Equipment
The THS6043CD can serve as the output stage in test equipment that reproduces the loading and drive conditions of an ADSL copper-pair interface. Its two channels can apply differential signals through a 1:1 transformer, while 350 mA output current per channel allows the fixture to emulate realistic line loading. The 120 MHz bandwidth supports broad test-signal generation, and shutdown control can reduce consumption between measurements. Test engineers must include appropriate protection, account for transformer reflections, and prevent excessive DC or transient conditions from stressing the output stage.
おすすめ
Transformer-Coupled DSL Interface Card
The THS6043CD is a practical choice for a dual-channel DSL interface card requiring high-current differential outputs. Its 14-pin SOIC package simplifies conventional surface-mount assembly, while ±12 V operation and 350 mA per channel align with transformer-coupled line-driver circuits. The dual-channel organization also keeps the two signal paths electrically similar. Layout should provide local supply bypassing, short output-current loops, and controlled return paths. Engineers should also compare the device's 43 Vpp differential swing and package dissipation against the worst-case load and temperature.
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: THS6043CD — 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 | THS6043ID | THS6043IDR |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-pin SOIC | 14-pin SOIC - same | 14-pin SOIC - same |
| Function | Dual ADSL CPE line driver | Dual ADSL CPE line driver | Dual ADSL CPE line driver |
| Number of Driver Channels | 2 channels | 2 channels | 2 channels |
| Maximum Output Current | 350 mA per channel | 350 mA per channel | 350 mA per channel |
| Nominal Supply | ±12 V | ±12 V | ±12 V |
| Device Bandwidth | 120 MHz | 120 MHz | 120 MHz |
| Noninverting Current-Noise Density | 2.1 pA/√Hz | 2.1 pA/√Hz | 2.1 pA/√Hz |
| Shutdown Quiescent Current | 300 µA per channel | 300 µA per channel | 300 µA per channel |
| Transformer Compatibility | 1:1 transformer ratio | 1:1 transformer ratio | 1:1 transformer ratio |
| Differential Output Swing | 43 Vpp into a 200-ohm load | 43 Vpp into a 200-ohm load | 43 Vpp into a 200-ohm load |
| Orderable Device Identifier | THS6043CD | THS6043ID | THS6043IDR |
主な差別化要因
- Documented no-modification replacement with matching interface （vs THS6043ID)
- High-current dual output in a standard 14-pin SOIC （vs THS6043IDR)
- Purpose-built ADSL line-driver feature set （vs THS6043ID)
設計ノート
Estimated: channel dissipation equals the average voltage dropped across the output stage multiplied by average output current. For a differential output swing of 43 Vpp at 200 ohms, the waveform-dependent peak and average currents must be calculated for the actual load rather than treating 350 mA as continuous. Check the resulting SOIC junction-temperature rise against the device's specified operating range and increase copper area if necessary.
Place the supply-bypass capacitors immediately beside the positive and negative supply pins, with short, low-inductance connections and an effective ground return. The high-current differential outputs should be routed as compact, symmetrical paths to the transformer network. Avoid sharing narrow return-current segments between channels, since common impedance in those paths can convert output current into supply ripple and degrade channel symmetry.
Keep sensitive input and shutdown routing away from the high-current output traces. If the shutdown-control nets are long, use suitable trace geometry and consider keeping them short to reduce capacitive pickup. Maintain symmetric placement of the two channel networks where possible, because small differences in transformer and routing parasitics can unbalance the differential output and affect return loss.
Do not assume that the 350 mA rating guarantees the same continuous current under every supply, load, temperature, and package condition. Confirm output saturation, thermal limits, and the transformer's DC and reflected AC loading. Shutdown should be sequenced so that downstream nodes are not exposed to unexpected transients, and the external protection network must handle lightning or fault-current events without overloading the output stage.
コンプライアンス情報
Compliance declarations for the exact THS6043CD ordering configuration were not identified in the manufacturer information used for this page.