THS6182DW - Low-Power ADSL/PLC Line Driver | Texas Instruments
料号： THS6182DW ✓ 量产中THS6182DW 概述
An ADSL line driver is a specialized interface-circuit component that converts upstream data into a high-current differential signal suitable for transmission over copper telephone lines. This device belongs to the interface IC hierarchy: line driver → differential transceiver → communications interface → semiconductor. Unlike a general-purpose voltage-output amplifier, a current-feedback line driver combines high-frequency signal capability with output-current control designed specifically for line networks.
Key operating features include 11 mA per channel in full-bias mode, 7.5 mA per channel in mid-bias mode, 4 mA per channel in low-bias mode, and 0.25 mA per channel in shutdown mode. The manufacturer also identifies operation down to 1.8 mA per channel, an adjustable-current input, and a low-noise result of 3.2 nV/√Hz inverting current noise. These selectable modes allow designers to balance transmission performance against power dissipation.
The current-feedback differential architecture supports full-rate ADSL applications while maintaining high linearity without the complexity and power burden of conventional designs. The adjustable bias input lets the circuit user control the operating-current condition, making it useful in designs where line length, transformer characteristics, aggregate line load, or central-office power density affect the preferred drive level. The THS6182 is also identified as pin-compatible with the EL1503C and EL1508C.
Typical uses include ADSL central-office line-card equipment, DSL access concentrators, splitters, remote-terminal and line-unit equipment, and PLC interface circuits. The device is particularly relevant where multiple line channels share a constrained power budget, because its low-bias and shutdown modes reduce dissipation when channel activity is low or a port must be disabled.
The primary design trade-off is current setting versus signal performance and power consumption. Select full-bias operation for maximum line drive, lower modes for reduced dissipation, and shutdown when the port is inactive. Place the device and its associated line-network components carefully because long high-current transmission paths can introduce impedance discontinuities and signal-integrity problems that are not corrected by changing bias mode.
This product page combines the manufacturer’s functional description, operating-mode data, package information, interface use cases, and replacement guidance with practical selection notes. It also highlights the distinction between electrically equivalent order codes and genuinely pin-compatible drop-in choices, helping engineers assess whether a redesign or package-level substitution is actually required.
直接替换替代料： THS6182DW ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： THS6182DW （相同外形与封装尺寸） ——差异在于 Package, Product Type.
THS6182DW 规格参数
| Product Type | Low-power differential ADSL/PLC line driver |
| Architecture | Current-feedback differential line driver |
| Logic Type | 1/0 DSL driver |
| Functions | 2 driver functions |
| Receivers | 2 bits |
| 封装 | 20-pin SOIC |
| 安装类型 | Surface mount |
| 工作温度范围 | -40°C to +85°C |
| Full-Bias Mode Current | 11 mA/channel |
| Mid-Bias Mode Current | 7.5 mA/channel |
| Low-Bias Mode Current | 4 mA/channel |
| Shutdown Mode Current | 0.25 mA/channel |
| Minimum Stable Operating Current | 1.8 mA/channel |
| Inverting Current Noise | 3.2 nV/√Hz |
| Bias Control | User-controlled through IADJ pin |
| Power Control Modes | Full bias, mid bias, low bias, and shutdown |
| Target Application | Full-rate ADSL and PLC systems |
| Pin Compatibility | Pin compatible with EL1503C and EL1508C |
THS6182DW 20-pin soic 引脚配置指南
THS6182DW（20-pin soic 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： THS6182DW.
请参阅 数据手册 以查看完整引脚配置。
典型应用
THS6182DW 适用于 6 应用s: ADSL Central-Office Line Cards, Full-Rate DSL Access Equipment, Power-Line Communication Interfaces, DSL Splitters and Line Units, High-Density Communication Racks, Industrial Copper-Line Interfaces.
ADSL Central-Office Line Cards
The THS6182DW fits ADSL line-card channels because it combines a current-feedback differential output with four selectable drive-current states. Full-bias operation provides 11 mA per channel when line drive is required, while mid-bias, low-bias, and shutdown modes reduce current to 7.5 mA, 4 mA, and 0.25 mA per channel. According to the Texas Instruments THS6182 datasheet, this low-dissipation architecture supports high-density central-office equipment. System designers can also use the IADJ input to tailor bias current when transformer ratios, line length, or crosstalk requirements call for a different operating condition.
推荐
Full-Rate DSL Access Equipment
The THS6182DW is suitable for full-rate DSL access equipment requiring a differential line interface with adjustable power and drive behavior. The Texas Instruments THS6182 product information describes the device as a current-feedback differential line driver with stable operation down to 1.8 mA per channel. This allows one design to cover changing line loads and activity patterns: full-bias mode can support the most demanding channel state, while low-bias or shutdown reduces dissipation on inactive ports. The 20-pin SOIC package also supports conventional surface-mount board assembly and thermal analysis without a specialized high-pin-count package.
推荐
Power-Line Communication Interfaces
The THS6182DW can be used in PLC interface circuits where selectable output current helps balance signal strength against equipment power consumption. The manufacturer lists 11 mA per channel for full-bias operation, 7.5 mA per channel for mid-bias operation, and 4 mA per channel for low-bias operation. According to the Texas Instruments THS6182 datasheet, the IADJ pin permits user-controlled bias current, which is useful when a communication network requires line drive to be adjusted during normal operation. Engineers should still validate attenuation, noise, and conducted-emissions margins in the complete line network.
推荐
DSL Splitters and Line Units
The THS6182DW is appropriate for DSL splitters, line units, and remote-terminal interfaces where multiple channels can be active for different periods. Its selectable per-channel bias states reduce unnecessary dissipation while preserving a higher-current drive option for active lines. The Texas Instruments THS6182 datasheet identifies 0.25 mA per channel in shutdown mode, which is useful when an individual port must be isolated from an active card. The device’s differential current-feedback architecture supports high-linearity communications, while the 20-pin SOIC format simplifies assembly and inspection in production equipment.
推荐
High-Density Communication Racks
The THS6182DW addresses power-density requirements in central-office racks where a conventional line driver would consume excessive energy across many channels. According to the Texas Instruments THS6182 product information, the architecture is intended to lower quiescent current while maintaining high linearity. Full-bias, mid-bias, low-bias, and shutdown settings allow equipment policy to select the appropriate current for channel demand. The specified -40°C to +85°C operating range supports deployment across industrial temperature zones, subject to correct PCB layout, thermal analysis, and line-network qualification.
推荐
Industrial Copper-Line Interfaces
The THS6182DW can support industrial copper-line interfaces when low power and controlled differential drive are important. Its four operating-current modes allow the hardware to reduce dissipation when line activity falls, while the IADJ input offers an additional user-controlled bias mechanism. The listed inverting current noise of 3.2 nV/√Hz provides a useful starting point for receiver-sensitivity and system-noise analysis. Because industrial environments can introduce temperature variation and grounding disturbances, the completed design should verify the full -40°C to +85°C specification and test the external line interface for conducted and radiated emissions.
推荐
工程参考数据： THS6182DW ——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 | THS6182DR |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 20-pin SOIC | 20-pin SOIC |
| Product Type | Low-power ADSL/PLC line driver | Low-power ADSL/PLC line driver |
| Architecture | Current-feedback differential | Current-feedback differential |
| Full-Bias Current | 11 mA/channel | 11 mA/channel |
| Mid-Bias Current | 7.5 mA/channel | 7.5 mA/channel |
| Low-Bias Current | 4 mA/channel | 4 mA/channel |
| Shutdown Current | 0.25 mA/channel | 0.25 mA/channel |
| Minimum Stable Current | 1.8 mA/channel | 1.8 mA/channel |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C |
关键差异点
- Four programmable operating-current states （对比 THS6182DR)
- User-controlled bias-current capability （对比 THS6182DR)
- Low-current operation for density-oriented equipment （对比 THS6182DR)
设计说明
Choose the operating mode according to line demand rather than leaving every channel in full-bias mode. The listed current is 11 mA per channel in full bias, 7.5 mA in mid bias, 4 mA in low bias, and 0.25 mA in shutdown. Use shutdown for inactive ports and low or mid bias for channels with lighter loading. If the IADJ connection is adjusted in the final design, recheck output linearity, signal amplitude, and power dissipation across the complete allowed control range.
Use the manufacturer’s THS6182 pin-description table and typical line-interface circuit when assigning the 20-pin SOIC footprint. Keep the IADJ and mode-control routing short, and place the associated bias-setting and decoupling components close to their relevant pins to limit noise pickup. Maintain a continuous return path beneath the device where the recommended layout permits, and verify that copper geometry and thermal performance match the board stack-up rather than assuming SOIC thermal behavior from a generic package drawing.
Validate the complete differential line path rather than evaluating only the IC output. The current-feedback driver, line transformer or coupling network, termination, protection components, and cable together determine rise time, return loss, and crosstalk. Measure both differential and common-mode behavior at the intended operating current, and compare full-bias operation with the selected production mode. Also check that mode transitions do not create transients that violate downstream receiver limits.
Estimated: when each of two channels operates at 11 mA, the combined device current is 22 mA. Multiply this current by the actual supply voltage to obtain device power before adding the external network loss. Compare the resulting dissipation with the thermal rating for the exact 20-pin SOIC package and board construction. Because line-card designers commonly use many channels, reducing the current in low-load modes can materially lower rack-level heat and cooling demand.
合规信息
Compliance status must be confirmed against the manufacturer’s current product documentation or declaration for the exact order code.
