lm4832 National Semiconductor Corporation, lm4832 Datasheet
lm4832
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lm4832 Summary of contents
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... The LM4832 also features National’s 3D Sound circuitry which can be externally adjusted via a simple RC network. For maximum system flexibility, the LM4832 has an exter- nally controlled, low-power consumption shutdown mode, and an independent mute for power and microphone ampli- fiers . ...
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... Hz 0.25V kHz 0.25V IN IN Gain at +20 dB Setting Attenuation at −40 dB Setting + − ≤ T −40˚C ≤ MAX A 4.5 ≤ 25˚C. A LM4832 Typical Limit (Note 6) (Note 7) (Note 8) 4 −15 2 0.1 0.15 ± 12 − 0.5 0.15 ± ...
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... A-Weighted, Attenuator 100 Hz 100 mVrms, RIPPLE µF B Power Amp P = 200 mW kHz O All controls kHz Setting +20 dB Gain +30 dB Gain 3 = 25˚C. A LM4832 Typical Limit (Note 6) (Note 7) (Note 8) 250 95 75 350 0.15 0.11 0.08 = 100 45 RIPPLE −75 − ...
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... Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. www.national.com (Notes 1, 2) (Continued unless otherwise noted. Limits apply for T DD Conditions − T )/θ .For the LM4832 150˚C, and the typical junction-to-ambient thermal resistance, when board A JA JMAX 4 = 25˚C. A ...
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... Typical Application Circuit Connection Diagram FIGURE 2. Typical Application Circuit 10001402 Top View Order Number LM4832N, LM4832M See NS Package Number N28B for DIP See NS Package Number M28B for SOIC See NS Package Number MTC28 for TSSOP 5 10001403 www.national.com ...
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... Tone In and Tone Out pins sets the frequency response of the tone functions. Please refer to the Application Information section for more information. These pins are the stereo inputs for the LM4832. These pins should be AC-coupled to the input signals. This pin is the AC analog ground for the line level AC signal inputs. ...
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Typical Performance Characteristics THD+N vs Frequency, 8Ω THD+N vs Frequency, 1 kΩ THD+N vs Output Power 10001404 10001406 10001408 7 THD+N vs Frequency, 32Ω 10001405 THD+N vs Output Power 10001407 THD+N vs Output Power 10001409 www.national.com ...
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Typical Performance Characteristics Power Amplifier Crosstalk Power Amplifier Attenuation vs Frequency Power Dissipation vs Output Power www.national.com (Continued) 10001410 10001412 10001414 8 Power Amplifier Noise Floor 10001411 Power Supply Rejection Ratio 10001413 Power Derating Curve 10001415 ...
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Typical Performance Characteristics Mic Amplifer Crosstalk from Power Amplifier Mic Amplifier Attenuation vs Frequency Mic Amplifier THD+N vs Frequency (Continued) 10001416 10001418 10001420 9 Mic Amplifier Noise Floor 10001417 Mic Amplifier Gain vs Frequency 10001419 Loop-out THD+N vs Frequency 10001421 ...
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Typical Performance Characteristics Bass Response vs Frequency Bass and Treble Response vs Frequency www.national.com (Continued) 10001422 10001424 10 Treble Response vs Frequency 10001423 Supply Current vs Temperature 10001425 ...
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Timing Diagrams See Electrical Characteristics section for timing specifications 2 FIGURE Bus Format 2 FIGURE Timing Diagram 11 10001426 10001427 www.national.com ...
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Truth Tables SOFTWARE SPECIFICATION MSB 1 0 *E.C. = Externally Configuarable MSB MSB ...
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Truth Tables (Continued) MSB ...
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Truth Tables (Continued) MSB Right Volume Control Power Up State MSB ...
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... SUPPLY BYPASSING As with all op amps and power op amps, the LM4832 re- quires the supplies to be bypassed to avoid oscillation. To avoid high frequency instabilities, a 0.1 µF metallized-film or ceramic capacitor should be used to bypass the supplies as close to the chip as possible. For low frequency consider- ations µ ...
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... After the data byte is sent, the master must generate another acknowledge to see if the LM4832 received the data. If the master has more data bytes to send to the LM4832, then the master can repeat the previous two steps until all data bytes have been sent. ...
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... The General Purpose Output pin is intended to be used as a control signal for other devices, such as an external power amplifier. This pin is controlled through the I is not relatedto any other functions within the LM4832. Refer to the Truth Tables section for the proper I utilize this function. ...
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Application Information www.national.com (Continued) FIGURE 8. 18 10001431 ...
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... The layout given in the following pages is meant to be connected parallel port (printer) cable. The board is controlled by software for a Windows PC. The parallel cable must be the standard type used for hooking up LM4832 SAMPLE LAYOUT (Continued) LAYOUT PARTS LIST Type 1µF, Tantalum, 16V, 10% 0.1µ ...
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Typical Application PCB Layout Top Silkscreen Layer Bottom Layer www.national.com 10001438 10001436 20 10001437 Top Layer ...
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... Physical Dimensions inches (millimeters) unless otherwise noted 28-Lead SOIC Package (M28B) Order Number LM4832M NS Package Number M28B for SOIC 21 www.national.com ...
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... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) 28-Lead Dual-In-Line Package (N28B) Order Number LM4832N NS Package Number N28B for DIP 22 ...
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... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. inches (millimeters) unless otherwise noted (Continued) 28-Lead TSSOP Order Number LM4832MT NS Package Number MTC28 2. A critical component is any component of a life ...