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The LMV1099 is an uplink and downlink voice intelligibility enhancing analog IC, ideally suited for mobile handsets. Uplink voice intelligibility is improved by rejecting far-field noise through a unique two-microphone solution. Downlink voice intelligibility is improved by enhancing the SNR (Signal-toNoise Ratio) between the downlink voice and the ambient n.
■ Noise reduction without DSP-type artifacts.
■ Adapting AGC (Automatic Gain Control) on ambient noise
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level & downlink signal strength Downlink adjustable noise-reducing high pass filter Separate Uplink & Downlink Enable Functions No added process delays Low power consumption Shutdown function Maximum AGC Limiter Differential inputs & outputs for noise immunity Earpiece amplifier Available in a 25-bump micro SMD
Key Specifications
■ Uplink Far Field Noise Suppression
(Electrical FFNSE at f = 1kHz) 33dB (typ) 6 to 18dB (typ) 16dB (typ) 2.7V to 5.5V
Applications
■ Mobile Han.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | LMV1090 |
ETCTI |
LMV1090 Dual Input Far Field Noise Suppression Microphone Amplifier (Rev. I) |
|
| 2 | LMV1090 |
National Semiconductor Corporation |
Far Field Noise Suppression Microphone Amplifier |
|
| 3 | LMV1091 |
ETCTI |
LMV1091 Dual Input Far Field Noise Suppression Microphone Amplifier (Rev. C) |
|
| 4 | LMV1091 |
National Semiconductor |
Far Field Noise Suppression Microphone Amplifier |
|
| 5 | LMV101 |
National Semiconductor |
Fixed-Gain Amplifiers |
|
| 6 | LMV1012 |
ETCTI |
LMV1012 Analog Series: Pre-Amplified IC for High Gain 2-Wire Microphones (Rev. H) |
|
| 7 | LMV1012 |
National Semiconductor |
Pre-Amplified ICs for High Gain 2-Wire Microphones |
|
| 8 | LMV1015 |
ETCTI |
LMV1015 Analog Series: Built-in Gain IC for High Sensitivity 2-Wire Microphone (Rev. B) |
|
| 9 | LMV1015 |
National Semiconductor |
Built-in Gain IC |
|
| 10 | LMV102 |
National Semiconductor |
Fixed-Gain Amplifiers |
|
| 11 | LMV1022 |
National Semiconductor |
PDM Output Pre-Amplifier |
|
| 12 | LMV1023 |
National Semiconductor |
PDM Output Pre-Amplifier |
|
