ISD3800FYI Datasheet, PDF (16/25 Pages) Nuvotem Talema – Digital ChipCorder with Digital Audio Interface

ISD3800
CLASS-AB BTL OUTPUT
Conditions: VCCD = 3.3V, VCCA = VCCSPK = 5V, MCLK = 16.384MHz, TA = +25°C, 1kHz signal
Parameter
Symbol Comments/Conditions Min Typ Max
Speaker CLASS-AB BTL Output (SPK_PLUS / SPK_MINUS with 8Ω bridge-tied-load)
Full scale output
Gain paths all at 0dB
gain
V_CCA / 3.3
Signal-to-noise ratio
SNR A-weighted
90
Total harmonic distortion ²
THD P_o = 1W, A-weighted
-60
Efficiency
E_AB 8Ω bridge-tied-load
50
Pout > 0.7W
Conditions: VCCD = 3.3V, VCCA = VCCSPK = 3.3V, MCLK = 16.384MHz, TA = +25°C, 1kHz signal
Parameter
Symbol Comments/Conditions Min Typ
Max
Speaker CLASS-AB BTL Output (SPK_PLUS / SPK_MINUS with 8Ω bridge-tied-load)
Full scale output
Gain paths all at 0dB
gain
V_CCA / 3.3
Signal-to-noise ratio
SNR A-weighted
84
Total harmonic distortion ²
THD A-weighted
-60
Efficiency
E_AB 8Ω bridge-tied-load
50
Pout > 0.4W
Units
V_rms
dB
dB
%
Units
V_rms
dB
dB
%
Figure 6-3 Class-AB BTL Power vs. V_CCSPK
Notes
1.
2.
3.
Full Scale is relative to the magnitude of VCCA and can be calculated as FS = VCCA/3.3.
Distortion is measured in the standard way as the combined quantity of distortion products plus noise. The signal
level for distortion measurements is at 3dB below full scale, unless otherwise noted.
SNR measured with a -100dbFS signal at input.
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Publication Release Date: Sep 22, 2010
Revision 0.60