The DRV604 is a 2Vrms Pop-Free stereo line driver with stereo headphone output designed to allow the removal of the output DC-blocking capacitors for reduced component count and cost. The device is ideal for single supply electronics where size and cost are critical design parameters.

Designed using TI’s patented DirectPath™ technology, The DRV604 is capable of driving 2 Vrms into a 5k load. The headphone output can generate a clean 40mW into 32 load from a 3.3V supply. The device has differential inputs and uses external gain setting resistors that supports a gain range of –1V/V to –10V/V. Headphone and line outputs have ±8kV IEC ESD protection enabling a simple ESD protection circuit. The DRV604 has built-in enable control for pop-free on/off control. DRV604 can monitor an external supply voltage using its built in comparator enabling it to shut down during a brown out condition before up stream audio DAC’s can produce click and pop artifacts.

Using the DRV604 in audio products can reduce component count considerably compared to traditional methods of generating headphone output and 2Vrms output. The DRV604 does not require a power supply greater than 3.3V to generate its 5.6Vpp output, nor does it require a split rail power supply. The DRV604 integrates its own charge pump to generate a negative supply rail that provides a clean, pop-free ground biased 2Vrms output.

The DRV604 is available in a 28-pin HTSSOP. For a stereo line driver with no HP amp see DRV603.

• DirectPath?
  • Eliminates Pop/Clicks
  • Eliminate Output DC-Blocking Capacitors
• 3.0V to 3.7V Supply Voltage
• Low Noise and THD
  • SNR > 109dB
  • Typical Vn < 7μVrms 20–20kHz
  • THD+N < 0.002% at 10k
• Output Voltage into 5k Load
  • 2Vrms at 3.3V Supply Voltage
• Stereo DirectPath? Headphone:
  • 40mW into 32 at 3.3V Supply Voltage
  • 16 to ∞ Stable Load Range
• Differential Input
• Power Sense UVP for Brown Out Protection
• Short Circuit and Thermal Protection
• ±8kV IEC ESD Protection
• Footprint Compatible with DRV602 and DRV603
• Supports Dual Line Driver Configuration
• APPLICATIONS
  • LCD and PDP TV
  • Blu-ray Disc?, DVD Players
  • Mini/Micro Combo Systems
  • Soundcards

DirectPath, FilterPro are trademarks of Texas Instruments. Blu-ray Disc is a trademark of Blu-ray Disc Association.

• Gain (V/V)
• Adjustable
• Iq (Typ) (mA)
• 11
• Load capacitance (μF)
• 2.20E-04
• Number of channels (#)
• 4
• THD + N @ 1 kHz (%)
• 0.001
• Noise floor (RTO, 20 kHz BW) (dBu)
• 122.7
• Slew rate (Typ) (V/us)
• 4.5
• Small-Signal bandwidth (Typ) (MHz)
• 8
• Operating temperature range (C)
• -40 to 85

DRV604的完整型号有：DRV604PWP、DRV604PWPR，以下是这些产品的关键参数及官网采购报价：

DRV604PWP，工作温度：-40 to 85，封装：HTSSOP (PWP)-28，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网DRV604PWP的批量USD价格：1.068（1000+）

DRV604PWPR，工作温度：-40 to 85，封装：HTSSOP (PWP)-28，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网DRV604PWPR的批量USD价格：.89（1000+）

DRV604PWPEVM — DRV604PWP 评估模块

DRV604PWPEVM 客户评估模块演示了德州仪器 (TI) 的 DRV604PWP 集成电路 (IC)。

DRV604PWP 是 2 Vrm 无杂音立体声线路驱动器，配有立体声耳机驱动器，旨在消除输出直流阻隔电容器的使用，以便减少组件数和降低成本。该器件是单电源电子产品的理想选择，对于这类产品，大小和成本是关键设计参数。

采用 TI 的 DirectPath 专利技术设计，DRV604 通过单个 3.3V 电源电压即可为 5kΩ 负载驱动 2 Vrm，为 32Ω 耳机再驱动 40mW。该器件采用差动输入并使用外部增益设置电阻，支持 ±1V/V 至 ±10V/V (...)

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