SGM8904 Datasheet, PDF (1/12 Pages) SG Micro Corp – Capless 2Vrms to 3Vrms Line Driver

SGM8904
Capless 2Vrms to 3Vrms Line Driver
with Adjustable Gain
GENERAL DESCRIPTION
The SGM8904 is a 2Vrms to 3Vrms pop/click-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.
The SGM8904 is capable of driving 3Vrms into a 2.5kΩ
load with 5V supply voltage. The device has single
input and uses external gain setting resistors that
supports a gain range of ±1V/V to ±10V/V. The use of
external gain resistors also allows the implementation
of a 2nd-order low pass filter to compliment DAC's and
SOC converters. The SGM8904 has build-in shutdown
control for pop/click-free on/off control.
Using the SGM8904 in audio products can reduce
component count compared to traditional methods of
generating a 3Vrms output. The SGM8904 doesn't
require a power supply greater than 5V to generate an
8.5V_PP output, nor does the device require a split rail
power supply. The SGM8904 integrates a charge pump
to generate a negative supply rail that provides a clean,
pop/click-free ground-biased 3Vrms output.
The SGM8904 is available in Green MSOP-10 package.
It operates over an ambient temperature range of -40℃
to +85℃.
FEATURES
● Capless Structure
Eliminates Pop/Clicks
Eliminates Output DC-Blocking Capacitors
Provides Flat Frequency Response from DC to 20kHz
● Low Noise and THD
Typical SNR = 114dB
Typical V_N = 5.4μVrms
Typical THD+N = 0.001% (f = 1kHz)
● 2Vrms Output Voltage into 2.5kΩ Load with 3.3V
Supply Voltage
● 3Vrms Output Voltage into 2.5kΩ Load with 5V
Supply Voltage
● -40℃ to +85℃ Operating Temperature Range
● Available in the Green MSOP-10 Package
APPLICATIONS
Set-Top Box
LCD TV
Blue-Ray DVD-Players
Home Theater in a Box
SG Micro Corp
www.sg-micro.com
MARCH 2017 –REV. C. 2