Datasheet LM4985TM/NOPB - Texas Instruments Audio Amplifiers
Part Number: LM4985TM/NOPB
Detailed Description
Manufacturer: Texas Instruments
Description: Audio Amplifiers
Docket:
LM4985, LM4985TMEVAL
www.ti.com SNAS346B MAY 2006 REVISED MAY 2006 LM4985 Stereo 135mW Low Noise Headphone Amplifier with Selectable Capacitively Coupled or Output Capacitor-less (OCL) Output and Digitally Controlled (I2C) Volume Control
Check for Samples: LM4985, LM4985TMEVAL
1 FEATURES OCL or capacitively coupled outputs (patent pending) I2C Digitally Controlled Volume Control Available in space-saving 0.4mm lead-pitch micro SMD package Volume control range: 76dB to +18dB Ultra low current shutdown mode 2 2.3V - 5.5V operation Ultra low noise APPLICATIONS Mobile Phones PDAs Portable electronics devices MP3 Players DESCRIPTION
The LM4985 is a stereo audio power amplifier with internal digitally controlled volume control.
This amplifier is capable of delivering 68mWRMS per channel into a 16 load or 38mWRMS per channel into a 32 load at 1% THD when powered by a 3.6V power supply and operating in the OCL mode. Boomer audio power amplifiers were designed specifically to provide high
Specifications:
- Audio Load Resistance: 32 Ohm
- Available Set Gain: 18 dB
- Input Signal Type: Single
- Mounting Style: SMD/SMT
- Operating Supply Voltage: 3 V, 5 V
- Operating Temperature Range: - 40 C to + 85 C
- Output Power: 135 mW
- Output Signal Type: Differential, Single
- Output Type: 2-Channel Stereo
- Package / Case: uSMD
- Packaging Type: Reel
- Product: Class-AB
- Supply Type: Single
- Supply Voltage Range: 2.3 V to 5.5 V
- THD plus Noise: 0.08 %, 0.01 %
- RoHS: Yes