BD7830NUV Rohm, BD7830NUV Datasheet

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... BD7830NUV ●Description The BD7830NUV is a monaural speaker amplifier that operates at low voltage and was developed for portable navigation and mobile audio products. When in standby mode, its current consumption is 0 µA, and since it switches quickly and quietly from standby to ON especially well suited for applications where there is frequent switching between standby and ON. ...

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... BD7830NUV ●Electrical characteristics (Unless otherwise noted, Ta=+25℃, Vcc=+3.0V, f=1kHz, RL=8Ω) Parameter Supply current Standby supply current Output power Total harmonic distortion Voltage gain1 Voltage gain2 Power supply rejection ratio Mute attenuation Output voltage Output offset voltage STBY release voltage STBY hold voltage ...

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... BD7830NUV ●Outer dimension ●Reference land pattern (adapt as necessary to suit conditions during actual design www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. D78 30 PKG type VSON008V2030 PKG type VSON008V2030 ※ This package is a non-lead type, so solderability of the lead ends and sides are not guaranteed ...

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... BD7830NUV ●Measurement Circuit Diagram V STBY STBY A 1 BIAS 2 1μ VCC 1 SOFT 3 SOFT 2 0.01μ IN－ 0.1μ 4 Vin 20k 600 ※3pin SOFT terminal 1 : Usually 2 : Enable to adjust fade in/out time by external capacitor ●Block diagram STBY 1 BIAS Bias 2 2nd SOFT SOFT 3 IN－ 4 1st Amp www.rohm.com © ...

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... BD7830NUV ●Input/output equivalent circuit PIN No. PIN Name Active/Standby Control pin 1 STBY STBY=H → Active STBY=L → Standby Bias capacitor 2 BIAS Connection pin Fade-in/out 3 SOFT Adjustment pin 4 IN- Input pin 5 OUT1 Output pin 8 OUT2 6 VCC Power supply pin 7 GND GND pin Notes) The above numerical values are typical values for the design, which are not guaranteed ...

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... BD7830NUV ●Description of operations ①ON/OFF operation by STBY pin VCC Standby STBY BIAS OUT Audio Input Once VCC = H, when STBY = L → H then BIAS and output (OUT) are activated. Once BIAS has become stable (= 1/2 VCC), output (OUT) fades in (FADE IN). Once STBY = H → L, output (OUT) starts to fade out (FADE OUT), and when fade-out ends, the BIAS falls. ...

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... BD7830NUV ●External components and cautions points Setting of external components STBY STBY BIAS Cb SOFT Cs SP_IN IN－ ●Cb This is a bypass capacitor, which is used for bias voltage stabilization. When a larger capacitor is used, the efficiency of voltage ripple rejection can be improved. When tuning, note with caution that Cb can affect the activation time. ...

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... BD7830NUV ●Cs This capacitor is for adjustment of the FADE IN/OUT times. The FADE IN/OUT functions soften the operation (IN and OUT) of BTL output when switching between standby and active modes. When a capacitor is connected to the SOFT pin (pin 3), the FADE IN/OUT functions are valid. When the capacitor rating is increased, the FADE IN/OUT effect is also increased, but note with caution when setting this that it also affects the activation time ...

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... BD7830NUV ●Ci This cut-off input coupling capacitor for the amp input pin. This includes an Ri and a high-pass filter. The cut-off frequency is calculated as follows 2π×Ri× -10 Capacitors of a certain size are required for coupling without attenuation of low frequencies, but in most cases of speakers used in portable equipment nearly impossible to reproduce signals in the 100 to 200 Hz range or below ...

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... BD7830NUV ●Selection of external components ①Setting gain from desired output Output Po is determined via the following formula, from which the required gain Av can also be obtained [ [Vrms [Ω ・ Vin Av ≧ ・ / Vin Po RL ②Setting input resistance and feedback resistance from gain Gain Av is determined via the following formula, from which input resistance Rin and feedback resistance Rf can be set (Rf / Rin) ・ ...

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... BD7830NUV ●Mechanism of pop sounds Cin is low STBY Gain is low (Rf) BIAS IN- SOFT OUT Cin is high STBY Gain is high (Rf) BIAS IN- SOFT OUT STBY 1 BIAS Bias 2 1μ SOFT 3 SOFT C S IN－ Cin 4 Ri 600 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. BIAS ...

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... BD7830NUV ●Bass boost function External components can be added to this chip to provide a bass boost function Gain Low frequency gain ●Thermal shutdown function When the chip exceeds the Tjmax (150°C) temperature by reaching a temperature of 180℃ or above, the protection function is activated. High impedance is for OUT1 and OUT2 during protected mode. Protection is canceled and normal operation is resumed when the chip's temperature falls to 120℃ ...

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... BD7830NUV ●Thermal design of chip The characteristics of the IC vary greatly depending on the use temperature, and when the maximum allowable junction temperature is exceeded, components may deteriorate or become damaged. Thermal considerations are needed for this chip from two standpoints: preventing instantaneous damage and improving long-term reliability. Note the following points with caution ...

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... Technical Note www.DataSheet4U.com BD7830NUV f-THD+N VCC=3V,Ta=25℃,Po=150mW,RL=8Ω 100 1k 10k f[Hz] BD7830NUV 　VCC-Po 　Ta=25℃ f=1kHz 400～30kBPF THD+N=1.0% RL=4Ω RL=8Ω RL=16Ω Vcc[V] BD7830NUV frequency characteristic VCC=3V,Ta=25℃,Vin=-20dBV,RL=8Ω 100 1k 10k f[Hz] 2010.06 - Rev.A 100k 6 100k ...

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... ROHM Co., Ltd. All rights reserved. 0 -10 -20 -30 -40 -50 -60 -70 10k 100k 10 0.10 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0. 10.00 1.00 0.10 0.01 1.0 1.5 1 15/17 Technical Note www.DataSheet4U.com BD7830NUV f-PSRR Ta=25℃, VCC=3V,Vripple=200mVpp,30kLPF 100 1k 10k f[Hz] BD7830NUV Circuit current (STBY) Ta=25℃, RL=8Ω VCC[V] BD7830NUV RL-Po Ta=25℃, f=1kHz, THD+N=1% VCC=5.5V VCC=3V VCC=2.4V 10 RL[Ω] 2010.06 - Rev.A 100k 6 100 ...

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... BD7830NUV ●Notes for use 1) The above numerical values and data are typical values for the design, which are not guaranteed. 2) The application circuit examples can be reliably recommended, but their characteristics should be checked carefully before use. When using external component constants that have been modified, determine an ample margin that takes into consideration variation among the external components and Rohm's LSI IC chips, including variation in static characteristics and transient characteristics ...

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... BD7830NUV ●Ordering part number Part No. Part No. VSON008V2030 2.0±0.1 1PIN MARK S 0.08 S 1.5±0.1 C0.25 0 +0.05 0.25 - 0.04 0.25 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package NUV:VSON008V2030 <Tape and Reel information> Tape Embossed carrier tape Quantity 3000pcs TR Direction The direction is the 1pin of product is at the upper right when you hold ...

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... ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing ...