DRV603PW中文资料德州仪器数据手册PDF规格书

1FEATURES

234• DirectPath™

– Eliminates Pop/Clicks

– Eliminates Output DC-Blocking Capacitors

– Provides Flat Frequency Response 20

Hz–20 kHz

• Low Noise and THD

– SNR > 109 dB

– Typical Vn < 7 μVms

– THD+N < 0.002%

• Output Voltage Into 2.5-kΩ Load

– 2 Vrms With 3.3-V Supply Voltage

– 3 Vrms With 5-V Supply Voltage

• Differential Input

• External Undervoltage Mute

APPLICATIONS

• PDP / LCD TV

• Blu-ray Disc™, DVD Players

• Home Theater in a Box

• Set-Top Boxes

DESCRIPTION

The DRV603PW is a 3-VRMS pop-free stereo line

driver 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 DRV603 is capable of driving 3 Vrms

into a 2.5-kΩ load with 5-V supply voltage. The

device has differential inputs and uses external gain-setting resistors to support a gain range of ±1

V/V to ±10 V/V, and line outputs that have ±8 kV IEC

ESD protection. The DRV603 (occasionally referred

to as the ‘603) has built-in shutdown control for

pop-free on/off control. The DRV603 has an external

and internal undervoltage detector that mutes the

output.

Using the DRV603 in audio products can reduce

component count considerably compared to

traditional methods of generating a 3-Vrms output. The

DRV603 does not require a power supply greater

than 5 V to generate its 8.5-Vpp output, nor does it

require a split-rail power supply. The DRV603 integrates its own charge pump to generate a

negative supply rail that provides a clean, pop-free

ground biased 3-Vrms output.

The DRV603 is available in a 14-pin TSSOP.

If the low noise and trimmed dc-offset and external

undervoltage mute function are not beneficial in the

application, TI recommends the footprint compatible

DRV602.