Rev2 Codec. LM4546 Datasheet

LM4546 Codec. Datasheet pdf. Equivalent

Part LM4546
Description AC97 Rev2 Codec
Feature OBSOLETE LM4546 www.ti.com SNOS440D – FEBRUARY 1999 – REVISED APRIL 2013 LM4546 AC '97 Rev 2 Cod.
Manufacture etcTI
Datasheet
Download LM4546 Datasheet

LM4546 AC ’97 Rev 2 Codec with Sample Rate Conversion and Na LM4546 Datasheet
OBSOLETE LM4546 www.ti.com SNOS440D – FEBRUARY 1999 – REV LM4546 Datasheet
LM4546A AC '97 Rev 2 Multi-Channel Audio Codec with Sample R LM4546A Datasheet
OBSOLETE LM4546A www.ti.com SNOS991E – NOVEMBER 2002 – RE LM4546A Datasheet
LM4546B AC ’97 Rev 2 Multi-Channel Audio Codec with Sample R LM4546B Datasheet
LM4546B www.ti.com SNOSAI4F – JUNE 2005 – REVISED MAY 2013 LM4546B Datasheet
Recommendation Recommendation Datasheet LM4546 Datasheet





LM4546
OBSOLETE
LM4546
www.ti.com
SNOS440D – FEBRUARY 1999 – REVISED APRIL 2013
LM4546 AC '97 Rev 2 Codec with Sample Rate Conversion and TI 3D Sound
Check for Samples: LM4546
FEATURES
1
2 AC'97 Rev 2 Compliant
• TI's 3D Sound Circuitry
• High Quality Sample Rate Conversion (SRC)
from 4kHz to 48kHz in 1Hz Increments
• Multiple Codec Support
• Advanced Power Management Support
• Digital 3V and 5V Compliant
APPLICATIONS
• Desktop PC Audio Systems
• Portable PC Systems
• Mobile PC Systems
KEY SPECIFICATIONS
• Analog Mixer Dynamic Range: 97 dB (Typ)
• D/A Dynamic Range: 89 dB (Typ)
• A/D Dynamic Range: 90 dB (Typ)
DESCRIPTION
The LM4546 is an audio codec for PC systems which
is fully PC98 compliant and performs the analog
intensive functions of the AC97 Rev 2 architecture.
Using 18-bit Sigma-Delta A/D's and D/A's, the
LM4546 provides 90dB of Dynamic Range.
The LM4546 was designed specifically to provide a
high quality audio path and provide all analog
functionality in a PC audio system. It features full
duplex stereo A/D's and D/A's and an analog mixer
with 2 stereo and 3 mono inputs, each of which has
separate gain, attenuation and mute control. The
LM4546 also provides TI's 3D Sound stereo
enhancement.
The LM4546 supports variable sample rate
conversion as defined in the AC97 Rev2
specification. The sample rate for the A/D and D/A
can be programmed separately to convert any rate
between 4kHz - 48kHz with a resolution of 1Hz. The
AC97 architecture separates the analog and digital
functions of the PC audio system allowing both for
system design flexibility and increased performance.
Block Diagram
3D
Figure 1. LM4546 Block Diagram
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated



LM4546
LM4546
OBSOLETE
SNOS440D – FEBRUARY 1999 – REVISED APRIL 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings(1)(2)
Supply Voltage
Storage Temperature
Input Voltage
ESD Susceptibility(3) 2500V
ESD Susceptibility(4) 200V
pins 27, 28
pin 3
pin 3
6.0V
40°C to +150°C
0.3V to VDD +0.3V
1500V
750V
100V
Junction Temperature
150°C
Soldering Information
θJA (typ)
LQFP Package
Vapor Phase (60 sec.)
Infrared (15 sec.)
215°C
220°C
74°C/W
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) Human body model, 100 pF discharged through a 1.5 kresistor.
(4) Machine Model, 220 pF–240 pF discharged through all pins.
Operating Ratings
Temperature Range TMIN TA TMAX
Analog Supply Range
Digital Supply Range
40°C TA 85°C
4.2V AVDD 5.5V
3.0V DVDD 5.5V
2 Submit Documentation Feedback
Product Folder Links: LM4546
Copyright © 1999–2013, Texas Instruments Incorporated





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