Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
 |
| LM1894 Dynamic Noise Reduction System DNR® |
340
Kbytes |
14-Oct-04 |
Download |
LM1894 Dynamic Noise Reduction System DNR® (Japanese)
 |
311 Kbytes |
|
 |
Package Availability, Models, Samples & Pricing
| Obsolete Part | Alternate Part or
Supplier | Source | Last Time Buy Date |
LM1894M
| NONE
| NATIONAL SEMICONDUCTOR
| 01 Dec 2009
|
LM1894MTBD
| NONE
| NATIONAL SEMICONDUCTOR
| 16 Nov 2008
|
LM1894N
| NONE
| NONE
| 01 Dec 2004
|
General Description
The LM1894 is a stereo noise reduction circuit for use with audio playback systems. The DNR system is non-complementary, meaning it does not require encoded source material. The system is compatible with virtually all prerecorded tapes and FM broadcasts. Psychoacoustic masking, and an adaptive bandwidth scheme allow the DNR to achieve 10 dB of noise reduction. DNR can save circuit board space and cost because of the few additional components required.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LM1894M | SLM | 0 | 44046 | 0 | 0 | 3532500 | 1 | 1002356520
|
|
LM1894MX | SLM | 0 | 44046 | 0 | 0 | 3532500 | 1 | 1002356520
|
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Application Notes
| Title | Size in Kbytes |
Date |
|
| AN-390: Application Note 390 DNR Applications of the LM1894 |
304
Kbytes |
25-Sep-02 |
Download |
| AN-386: Application Note 386 A Non-Complementary Audio Noise Reduction System |
376
Kbytes |
23-Sep-02 |
Download |
| AN-384: Application Note 384 Audio Noise Reduction and Masking |
163
Kbytes |
23-Sep-02 |
Download |
[Information as of 8-Nov-2009]
|
