SGM8903 Datasheet, PDF (1/14 Pages) SG Micro Corp – Capless 3Vrms Line Driver with Adjustable Gain

SGM8903
Capless 3Vrms Line Driver
with Adjustable Gain
GENERAL DESCRIPTION
The SGM8903 is a 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 SGM8903 is capable of driving 3Vrms into a 2.5kΩ
load with 5V supply voltage. The device has differential
inputs 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 SGM8903 has build-in shutdown
control for pop/click-free on/off control.
Using the SGM8903 in audio products can reduce
component count compared to traditional methods of
generating a 3Vrms output. The SGM8903 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 SGM8903 integrates a charge pump
to generate a negative supply rail that provides a clean,
pop/click-free ground-biased 3Vrms output.
The SGM8903 is available in Green TSSOP-14
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 = 5.5μVrms
Typical THD+N = 0.001% (f = 1kHz)
 3Vrms Output Voltage into 2.5kΩ Load with 5V
Supply Voltage
 Differential Input
 -40℃ to +85℃ Operating Temperature Range
 Available in the Green TSSOP-14 Package
APPLICATIONS
Set-Top Box
LCD TV
Blue-Ray DVD-Players
Home Theater in a Box
SG Micro Corp
www.sg-micro.com
DECEMBER 2016 – REV. C. 2