LM1972M/NOPB National Semiconductor, LM1972M/NOPB Datasheet
LM1972M/NOPB
Specifications of LM1972M/NOPB
*LM1972M/NOPB
LM1972M
Related parts for LM1972M/NOPB
LM1972M/NOPB Summary of contents
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... Typical Application FIGURE 1. Typical Audio Attenuator Application Circuit μPot™ and Overture™ are trademarks of National Semiconductor Corporation. © 2007 National Semiconductor Corporation Key Specifications ■ Total Harmonic Distortion + Noise: ■ ...
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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 (V – Voltage at Any Pin V Power Dissipation (Note 3) ESD SusceptabiIity (Note 4) Junction Temperature Electrical Characteristics The following specifications apply for all channels with V specified. Limits apply for T = 25° ...
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Timing Diagram Pin Descriptions Signal Ground (3, 19): Each input has its own independent ground, GND1 and GND2. Signal Input (4, 20): There are 2 independent signal inputs, IN1 and IN2. Signal Output (2, 17): There are 2 independent signal ...
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Supply Current vs Supply Voltage Noise Floor Spectrum by FFT Amplitude vs Frequency THD vs V OUT 1 KHz by FFT V − 12V DD SS www.national.com 1197815 1197817 at 1197819 4 Supply Current vs Temperature 1197816 THD ...
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THD + N vs Frequency and Amplitude 1197821 FFT of 20 kHz THD 1197823 THD + N vs Amplitude 1197825 FFT of 1 kHz THD THD + N vs Amplitude THD + N vs Amplitude 5 1197822 1197824 1197826 www.national.com ...
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Application Information ATTENUATION STEP SCHEME The fundamental attenuation step scheme for the LM1972 μPot is shown in Figure 3. This attenuation step scheme, however, can be changed through programming techniques to fit different application requirements. One such example would be ...
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MUTE FUNCTION One major feature of a μPot is its ability to mute the input signal to an attenuation level of 104dB as shown in Figure 3. This is accomplished internally by physically isolating the out- put from the input ...
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LADDER ARCHITECTURE Each channel of a μPot has its own independent resistor lad- der network. As shown in Figure 8, the ladder consists of multiple R1/R2 elements which make up the attenuation scheme. Within each element there are tap ...
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Also, to ensure an accurate measurement, the measured channel's input should be AC grounded through a 1 μF capacitor. CLICKS ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Surface Mount Package Order Number LM1972M NS Package Number M20B Dual-In-Line Plastic Package Order Number LM1972N NS Package Number N20A 10 ...
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Notes 11 www.national.com ...
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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...