© Semiconductor Components Industries, LLC, 2014
October, 2014 − Rev. 0
1 Publication Order Number:
NCS603/D
NCS603
NOCAP], Pop-Free, 3 V
RMS
Audio Line Driver with
Adjustable Gain
The NCS603 is a pop−free stereo line driver. It uses
ON Semiconductor’s patented NOCAP technology which allows the
elimination of the external DC−blocking capacitors by providing
ground−referenced outputs through the generation of an internal
negative supply rail. The device can drive 3 V
RMS
into a 600 W load at
5 V power supply. By eliminating the two external heavy coupling
capacitors, the NOCAP approach offers significant space and cost
savings compared to similar audio solutions.
The NCS603 has differential inputs and is available with an external
adjustable gain ranging from ±1 V/V to ±10 V/V. The gain is adjusted
with external resistors. The device can also be configured as a 2nd
order low pass filter to complement DAC’s and SOC converters. In
addition to the NOCAP architecture, it contains specific circuitry to
prevent “Pop & Click” noise from occurring during Enable /
Shutdown transitions. The Signal-to-Noise Ratio reaches 105 dB,
offering high fidelity audio sound. The NCS603 exhibits a high power
supply rejection with a typical value of 90 dB. This device also
features an Under−Voltage Protection (UVP) function which can be
adjusted using an external resistor bridge. The device is available in a
TSSOP−14 package.
Features
• NOCAP
♦ Eliminates Pop/Clicks
♦ Eliminates Output DC−Blocking Capacitors –
Provides Flat Frequency Response 20 Hz – 20 kHz
• Supply Voltage from 2.2 V to 5.5 V
• Low Noise and THD
♦ SNR = 105 dB
♦ Typical V
n
at 8 mVrms, A−Weighted
♦ THD+N < 0.001% at 1 kHz
• Output Voltage into 600 W Load
♦ 2 V
RMS
with 3.3 V Supply Voltage
♦ 3 V
RMS
with 5 V Supply Voltage
• Adjustable Gain from ± 1 V/V to ± 10 V/V
• Differential Input
• High PSRR: 90 dB
• External Under−Voltage Detection Function
• Enhanced Pop & Click Suppression Function
• Offset Voltage ≤ ±400 mV
• Outputs pass ±8 kV contact discharge according to
IEC61000−4−2 under application conditions
• Available in a TSSOP−14 package
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
Applications
• Set−Top Boxes
• PDP / LCD TV
• Blu−ray™ Player, DVD Players
• Home Theater in a Box
• Laptops, Notebook PCs
MARKING
DIAGRAM
http://onsemi.com
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
1
14
TSSOP−14
CASE 948G
NCS
603
ALYWG
G
1
14
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
ORDERING INFORMATION
*For additional marking information, refer to
Application Note AND8473/D.
(*Note: Microdot may be in either location)
