Rainbow Electronics MAX9758 - Manual (Page 3)

MAX9756/MAX9757/MAX9758
2.3W Stereo Speaker Amplifiers and DirectDrive
Headphone Amplifiers with Automatic Level Control
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ELECTRICAL CHARACTERISTICS (continued)
(V DD = PV DD = HPV DD = CPV DD = IN = +5.0V, GND = PGND = CPGND = 0, SHDN = V
DD , REGEN = V DD , DR = SET = GND, C BIAS
= 1µF, C PVSS = 1µF, C1 = C2 = 1µF, PREF = unconnected, speaker loads terminated between OUT_+ and OUT_-, headphone load
terminated between HP_ and GND, GAIN1 = GAIN2 = GAIN3 = VOL = 0 (A V(SP) = 15dB, A V(HP) = 0dB), T A = -40°C to +85°C, unless
otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Noise V n
BW = 22Hz to 22kHz, unweighted,
measured at output, input at AC GND
71 µV RMS
Capacitive-Load Drive C L No sustained oscillations 200 pF
Crosstalk L to R, R to L, f = 10kHz 80 dB
Slew Rate SR Measured between OUT_+ and OUT_- 1.3 V/µs
GAIN3 = 0 GAIN2 = 0 GAIN1 = 0 15
GAIN3 = 0 GAIN2 = 0 GAIN1 = 1 16.5
GAIN3 = 0 GAIN2 = 1 GAIN1 = 0 18
GAIN3 = 0 GAIN2 = 1 GAIN1 = 1 19.5
GAIN3 = 1 GAIN2 = 0 GAIN1 = 0 21
GAIN3 = 1 GAIN2 = 0 GAIN1 = 1 22.5
GAIN3 = 1 GAIN2 = 1 GAIN1 = 0 24.0
Gain (Maximum Volume Settings)
(Note 4) A VMAX
(SPKR)
GAIN3 = 1 GAIN2 = 1 GAIN1 = 1 25.5
dB
Into
shutdown
65
Click-and-Pop Level K CP
Peak voltage, 32
samples/second,
A weighted (Note 5)
Out of
shutdown
38.5
dBV
HEADPHONE AMPLIFIERS (HPS = V DD )
Output Offset Voltage V OS(HP) T A = +25°C ±2 ±7 mV
HPV
DD
= 3V to 5.5V, T
A
= +25°C 70 90
f = 1kHz, V RIPPLE = 200mV P-P 72
Power-Supply Rejection Ratio
(Note 2)
PSRR
f = 10kHz, V RIPPLE = 200mV P-P 70
dB
R L = 32 Ω 40 68
Output Power (Note 3) P OUT
THD+N = 1%, f = 1kHz
(T
A = +25°C) R
L
= 16 Ω 130
mW
R L = 32 Ω, V
OUT = 1V RMS , f = 1kHz 0.02 Total Harmonic Distortion Plus
Noise
THD+N
R L = 16 Ω, V
OUT = 1V RMS , f = 1kHz 0.04
%
R L = 32 Ω, BTL P
OUT = 65mW,
BW = 22Hz to 22kHz, unweighted
97
Signal-to-Noise Ratio SNR
R L = 32 Ω, BTL P
OUT = 65W,
BW = 22Hz to 22kHz, A weighted
100
dB
Noise V n BW = 22Hz to 22kHz 20.4 µV RMS
Capacitive-Load Drive C L No sustained oscillations 200 pF
Crosstalk L to R, R to L, f = 10kHz 60 dB
Slew Rate SR 1.4 V/µs
GAIN2 = 0, HPS = 1 0 Gain (Maximum Volume Settings)
(Note 6)
A VMAX(HP)
GAIN2 = 1, HPS = 1 3.0
dB
Into shutdown 62
Click-and-Pop Level K CP
Peak voltage, 32
samples/second,
A weighted (Note 4)
Out of shutdown 50
dBV