Datasheet

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DRV602

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RIGHT

DAC

SOC

DRV602

www.ti.com

SLOS572D –DECEMBER 2008–REVISED OCTOBER 2010

DirectPath™, Pop-Free 3Vrms Line Driver with Adjustable Gain

Check for Samples: DRV602

Designed using TI's patented DirectPath™

FEATURES

technology, the DRV602 is capable of driving 3Vrms

234

• DirectPath™

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

– Eliminates Pop/Clicks

has differential inputs and uses external gain setting

resistors, that supports a gain range of ±1V/V to

– Eliminates Output DC-Blocking Capacitors

±10V/V. The use of external gain resistors also allows

– Provides Flat Frequency Response

the implementation of a 2nd order low pass filter to

20Hz–20kHz

compliment DAC's and SOC converters. The line

• Low Noise and THD

output of the DRV602 has ±8kV IEC ESD protection.

The DRV602 (referred to as the '602) has built-in

– SNR > 102 dB

shutdown control for pop-free on/off control.

– Typical V

< 15 mVms

Using the DRV602 in audio products can reduce

– THD+N < 0.05% 20 Hz–20 kHz

component count compared to traditional methods of

• Output Voltage into 2.5-kΩ Load

generating a 3Vrms output. The DRV602 doesn't

– 2 Vrms with 3.3-V Supply Voltage

require a power supply greater than 5V to generate

its 8.5V

output, nor does it require a split rail power

– 3 Vrms with 5-V Supply Voltage

supply. The DRV602 integrates its own charge pump

• 3Vrms Output Voltage into 2.5 kΩ Load With

to generate a negative supply rail that provides a

5V Supply Voltage

clean, pop-free ground biased 3Vrms output.

• Differential Input

The DRV602 is available in a 14 pin TSSOP

package.

APPLICATIONS

If higher SNR, trimmed DC-offset and external

• Set-Top Boxes

undervoltage-mute functions are beneficial in the

• PDP / LCD TV

application, TI recommends the footprint compatible

• Blu-ray Disc™, DVD-Players

DRV603 (SLOS617).

• Home Theater in a Box

For a stereo line and stereo HP driver see DRV604

(SLOS659).

DESCRIPTION

The DRV602PW is a 3Vrms 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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2DirectPath, TI FilterPro are trademarks of Texas Instruments.

3Blu-ray Disc is a trademark of Blu-ray Disc Association.

4All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (16 pages)

PAGE 1
DRV602 www.ti.com SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 DirectPath™, Pop-Free 3Vrms Line Driver with Adjustable Gain Check for Samples: DRV602 FEATURES 1 • DirectPath™ – Eliminates Pop/Clicks – Eliminates Output DC-Blocking Capacitors – Provides Flat Frequency Response 20Hz–20kHz • Low Noise and THD – SNR > 102 dB – Typical VN < 15 mVms – THD+N < 0.05% 20 Hz–20 kHz • Output Voltage into 2.5-kΩ Load – 2 Vrms with 3.
PAGE 2
DRV602 SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
PAGE 3
DRV602 www.ti.com SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 ABSOLUTE MAXIMUM RATINGS (1) (2) over operating free-air temperature range Supply voltage, VDD to GND VI Input voltage RL Minimum load impedance EN to GND VALUE UNIT –0.3 V to 5.5 V VSS – 0.3 to VDD + 0.3 V > 600 Ω –0.3 to VDD +0.
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DRV602 SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 www.ti.com OPERATING CHARACTERISTICS VDD = 3.3 V , TA = 25°C, RL = 2.5kΩ, C(PUMP) = C(PVSS) = 1 µF , CIN = 1 µF, RIN = 33 kΩ, Rfb = 68kΩ (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP THD = 1%, VDD = 3.3 V, f = 1 kHz 2.05 THD = 1%, VDD = 5 V, f = 1 kHz 3.01 VO Output Voltage (Outputs In Phase) THD+N Total harmonic distortion plus noise VO = 2 Vrms, f = 1 kHz VO = 2 Vrms, f = 6.
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DRV602 www.ti.com SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 TYPICAL CHARACTERISTICS VDD = 3.3V , TA = 25°C, C(PUMP) = C(PVSS) = 1 µF , CIN = 1 µF, RIN = 33 kΩ, Rfb = 68 kΩ, RL = 2.5 kΩ (unless otherwise noted) TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY 10 5 THD+N - Total Harmonic Distortion+Noise - % THD+N - Total Harmonic Distortion+Noise - % TOTAL HARMONIC DISTORTION + NOISE vs OUTPUT VOLTAGE 1 0.1 20 Hz 6.7 kHz 0.01 1 kHz 0.001 0.
PAGE 6
DRV602 SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 www.ti.com APPLICATION INFORMATION Line Driver Amplifiers Single-supply line driver amplifiers typically require dc-blocking capacitors. The top drawing in Figure 5 illustrates the conventional line driver amplifier connection to the load and output signal. DC blocking capacitors are often large in value, and a mute circuit is needed during power up to minimize click & pop.
PAGE 7
DRV602 www.ti.com SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 Charge Pump Flying Capacitor and PVSS Capacitor The charge pump flying capacitor, CPUMP, serves to transfer charge during the generation of the negative supply voltage. The PVSS capacitor must be at least equal to the charge pump capacitor in order to allow maximum charge transfer. Low ESR capacitors are an ideal selection, and a value of 1µF is typical.
PAGE 8
DRV602 SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 www.ti.com Input-Blocking Capacitors DC input-blocking capacitors are required to be added in series with the audio signal into the input pins of the DRV602. These capacitors block the DC portion of the audio source and allow the DRV602 inputs to be properly biased to provide maximum performance. The input blocking capacitors also limit the DC gain to 1, limiting the DC-offset voltage at the output.
PAGE 9
DRV602 www.ti.com SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 Pop-Free Power Up Pop-free power up is ensured by keeping the EN (enable pin) low during power supply ramp up and down. The EN pin should be kept low until the input ac-coupling capacitors are fully charged before asserting the EN pin high; this way, proper precharge of the ac-coupling is performed, and pop-free power-up is achieved. Figure 10 illustrates the preferred sequence.
PAGE 10
DRV602 SLOS572D – DECEMBER 2008 – REVISED OCTOBER 2010 www.ti.com REVISION HISTORY NOTE: Page numbers of current version may differ from previous versions. Changes from Revision A (December 2008) to Revision B • Page Changed crosstalk spec from -80dB to -100dB ....................................................................................................................
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.
PAGE 12
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant DRV602PWR TSSOP PW 14 2000 330.0 12.4 6.95 5.6 1.6 8.0 12.0 Q1 DRV602PWR TSSOP PW 14 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DRV602PWR TSSOP PW 14 2000 355.0 350.0 50.0 DRV602PWR TSSOP PW 14 2000 367.0 367.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.