WM3100 Datasheet, PDF (1/13 Pages) Wolfson Microelectronics plc – High Performance Stereo 2Vrms Line Driver

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WM3100
High Performance Stereo 2Vrms Line Driver
DESCRIPTION
FEATURES
The WM3100 is a high performance stereo 2VRMS line driver
with ground referenced outputs.
The device is ideal for cost-sensitive applications requiring line
level outputs, minimal external components and small PCB
area. The WM3100 offers excellent audio performance.
The two high performance amplifiers are capable of driving a
wide variety of loads. The device supports single-ended or
differential input configurations. The input and feedback
resisitors around both amplifiers are integrated within the
WM3100, giving a high impedance input and a fixed signal gain
of +6.4dB.
An on-board charge pump is provided to generate the negative
supply for the ground-referenced drivers; the charge pump
requires only two external capacitors for normal operation.
The line outputs can be muted using a hardware control input. A
high impedance mute state is also supported, where the outputs
are undriven - this is useful in applications where a common
external connector is used as an input and an output.
The device uses a single 3.3V supply, and is available in a 14-
pin SOIC.
• 108dB SNR (‘A’ weighted)
• -95dB THD+N
• 108dB dynamic range
• Single-ended or differential input
• Fixed gain +6.4dB
• Digital control inputs
- Mute pin
- High impedance output mode
• Pop and click suppression
• Fast start-up
- 200μs start-up from OFF
- 100μs start-up from MUTE
• 3.3V supply
• 14-pin SOIC
APPLICATIONS
• Digital televisions
• DVD players & recorders
• Blu-ray disc players
• Gaming consoles
• Set-top boxes
BLOCK DIAGRAM
WOLFSON MICROELECTRONICS plc
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Preliminary Technical Data, October 2010, Rev 2.0
Copyright ©2010 Wolfson Microelectronics plc