描述 Description

The SGM89112 is a 3Vrms pop/click-free stereo line driver. The device is ideal for single supply applications. Capless design can eliminate output DC-blocking capacitors for less-component count and low-cost. The SGM89112 also has a single rail-to-rail 5th-order video filter with a slew rate of 33V/μs and a -3dB bandwidth of 8MHz. It can operate from 3.0V to 5.5V power supply.
The SGM89112 has single input and is capable of driving 3Vrms into a 2.5kΩ load with 5V supply voltage. Build-in shutdown control also helps for pop/click-free on/off control. The gain can be set by users from ±1V/V to ±10V/V through external gain setting resistors that also allows the implementation of a 2nd-order low pass filter to compliment SOC and DAC's converters. The video driver of the SGM89112 uses an internal level shift circuit to allow DC-coupled output and avoid synchronous pulse clipping.
SGM89112 does not require a power supply. An integrated charge pump generates a 3Vrms output negative power rail that provides a clean, pop/click-free ground offset.
The SGM89112 is available in a Green TSSOP-16 package. It operates over an ambient temperature range of -40℃?to +85℃.

特性 Features

? Supply Voltage Range: 3V to 5.5V

? Output Voltage into 2.5kΩ Load
3Vrms at 5V Supply Voltage

? Input Voltage Range Includes Ground

? Capless Structure
Pop/Click-Free
Eliminates Output DC-Blocking Capacitors
Provides Flat Frequency Response

? Video Driver Gain: 6dB

? 5th-Order Video Filter

? Video Driver can Drive Two Video Loads

? Support Single Audio Signal Input

? Excellent SD Video Performance

? Low Noise and THD
SNR = 107dB (TYP)
VN?= 9μVrms (TYP)
THD+N = 0.001% (f = 1kHz)

? -40℃?to +85℃?Operating Temperature Range

? Available in a Green TSSOP-16 Package

應(yīng)用 Application

LCD TV
Set-Top Box
Communication Devices
Home Theater
Blue-Ray DVD-Players