SGM89000 Datasheet, PDF (1/14 Pages) SG Micro Corp – Capless 2Vrms Line Driver

SGM89000
Capless 2Vrms Line Driver
with Adjustable Gain
GENERAL DESCRIPTION
The SGM89000 is a 2Vrms 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 SGM89000 is capable of driving 2Vrms into a
2.5kΩ load with 3.3V 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
SGM89000 has build-in shutdown control for
pop/click-free on/off control.
Using the SGM89000 in audio products can reduce
component count compared to traditional methods of
generating a 2Vrms output. The SGM89000 doesn't
require a power supply greater than 3.3V to generate a
5.6V_PP output, nor does the device require a split rail
power supply. The SGM89000 integrates a charge
pump to generate a negative supply rail that provides a
clean, pop/click-free ground-biased 2Vrms output.
The SGM89000 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)
 2Vrms Output Voltage into 2.5kΩ Load with 3.3V
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
FEBRUARY 2017 – REV. C. 1