LMV1099TL/NOPB National Semiconductor, LMV1099TL/NOPB Datasheet
LMV1099TL/NOPB
Specifications of LMV1099TL/NOPB
Related parts for LMV1099TL/NOPB
LMV1099TL/NOPB Summary of contents
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... FFNS 1kHz) E ■ Near-Field SNR Enhancement ■ Downlink SNRI E ■ Supply voltage range © 2011 National Semiconductor Corporation LMV1099 ■ Supply current (V ■ Shutdown current ■ Uplink PSRR (f = 217Hz) ■ Downlink SNR (A-weighted) ■ ...
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Block Diagram www.national.com 2 30107604 ...
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Typical Application FIGURE 2. Typical Application Circuit Diagram 3 30107605 www.national.com ...
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Connection Diagrams 25 – Bump micro SMD Marking Top View X = Plant Code Y = Date Code TT = Die Traceability ZA5 = LMV1099TL Order Number Package LMV1099TL 25 Bump microSMD LMV1099TLX 25 Bump microSMD www.national.com 25 – Bump ...
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Pin Descriptions PIN NAME D5 MIC1+ E5 MIC1- B5 MIC2+ C5 MIC2- E4 MIC BIAS E3 REF D3 OUT+ C3 LPF+ D4 OUT- C4 LPF- PIN NAME A4 DV+ A5 DV- A2 CT1 B2 CT2 B1 CT3 A3 GND D1 ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Storage Temperature ESD Rating (HBM) (Note 4) ESD Rating (MM) (Note 5) ESD Rating (CDM) (Note 6) Junction Temperature (T ) JMAX Mounting Temperature ...
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Symbol Parameter PSRR Power Supply Rejection Ratio CMRR Common Mode Rejection Ratio V Microphone Bias Supply Voltage BM e Microphone Bias Supply Noise VBM Maximum Microphone Reference Output I BMAX Current V Maximum Input Signal (Differential) IN(DV) V Output Offset ...
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Interface Characteristics V The following specifications apply for LS and HP VOLUMEGAIN = 0dB LSGAIN = 12B, HPGAIN = 0dB, EPGAIN = 0dB, R +30μH (Loudspeaker 32Ω (Headphone specified. Limits apply for T ...
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Test Methods FAR FIELD NOISE SUPPRESSION (FFNS For optimum noise suppression the far field noise should broadside array configuration from the two microphones, see Figure 10. Which means the far field sound source is equidistance from the ...
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Typical Performance Characteristics Input Voltage = 18mV , f =1 kHz, pass through mode (Note 8), Pre Amp gain = 20dB, Post Amp gain = 6dB, R P-P = 32Ω 1kHz, SNR Enhancer disabled 4.7pf. Downlink ...
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THD+N vs Output Power V = 3.6V, Downlink Path DD 30107666 THD+N vs Input Voltage Mic1 Noise Cancelling Mode Mic2 = AC GND, Uplink Path 30107668 Output Power vs Power Dissipation V = 3.6V, Downlink Path DD 30107627 THD+N vs ...
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PSRR vs Frequency V = 3.6V RIPPLE Input Referred, Input = AC Ground Downlink Path PSRR vs Frequency Input Referred, V RIPPLE Input = AC Ground, Downlink Path www.national.com = 200mV P-P 30107632 = ...
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Application Data UPLINK FAR-FIELD NOISE REDUCTION OVERVIEW The uplink portion of the LMV1099 is a fully analog solution to reduce the far field noise picked up by microphones in a FIGURE 4. Simplified Block Diagram of the LMV1099 Uplink path ...
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Example 1: An application using microphones with 50mV output voltage, and a baseband chip after the LMV1099 with 1.5V maximum input voltage. P-P For optimum noise performance, the gain of the input stage should be set to the maximum. 1. ...
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RESET PIN When the RESET pin is pulled low, the device will go into shutdown and the Power_on bit (see Table 3) in the shutdown control register will reset. The device will remain in ...
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B7 Chip Address 1 NOTE: The 7th Bit (B7) of the Register Data determines whether it will activate Register A or Register B. Register Register Name Address B<6:5> Shutdown 00 control Mic mode 01 control Mic Gain control 10 EP ...
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TABLE 6. LMV1099 Microphone Gain Control Register BIT NAME B4 mic_post_gain mic_pre_gain<3> 0 mic_pre_gain<2> B3:B0 0 mic_pre_gain<1> 1 mic_pre_gain<0> TABLE 7. LMV1099 Earpiece Control Register BIT ...
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Shutdown Function As part of the Powerwise™ family, the LMV1099 consumes only 0.50mA of current. In many applications the part does not need to be continuously operational. To further reduce the power consumption in the inactive period, the LMV1099 pro- ...
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Microphone Placement Because the LMV1099 is a microphone array Far Field Noise Reduction solution, proper microphone placement is critical for optimum performance. Two things need to be considered: The spacing between the two microphones and the position of the two ...
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Low-Pass Filter At The Output At the output of the LMV1099 there is a provision to create order low-pass filter (only enabled in 'Noise Cancelling' mode). This low-pass filter can be used to compensate for the change ...
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Measuring Uplink Noise and SNR The overall noise of the LMV1099 is measured within the fre- quency band from 10Hz to 22kHz using an A-weighted filter. For the signal to noise ratio (SNR) the signal level at the out- put ...
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Revision History Rev Date 1.0 08/12/10 1.01 12/10/10 1.02 03/30/11 www.national.com Description Initial release. Added the X1, X2, and X3 values of the mktg outline. Edited Table 3 (Control Registers). 22 ...
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Physical Dimensions inches (millimeters) unless otherwise noted X1 = 2.644±0.030mm, 25 Bump micro SMD Technology NS Package Number TLA25GMA X2 = 2.771±0.030mm 0.600±0.075mm, 23 www.national.com ...
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