Rainbow Electronics MAX9729 - Manual (Page 3)

MAX9729
Stereo Headphone Amplifier with BassMax,
Volume Control, and Input Mux
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ELECTRICAL CHARACTERISTICS (3V Supply) (continued)
(V DD = PV DD = SHDN = 3V, PGND = SGND = 0V, C1 = C2 = C3 = 1µF, BM_ = 0V, maximum gain setting = 6dB, volume attenuation
setting = -16dB (overall gain = -10dB), BassMax disabled. Load connected between OUT_ and PGND where specified. THD+N
measurement BW = 22Hz to 22kHz. T
A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V DD = 1.8V to 3.6V, overall
gain = 6dB
72 95
f = 217Hz, 100mV P-P
ripple, overall gain = 26dB
90
f = 1kHz, 100mV P-P ripple,
overall gain = 26dB
82
Power-Supply Rejection Ratio
PSRR (Note 3)
f = 20kHz, 100mV
P-P
ripple, overall gain = 26dB
58
dB
R L = 16 Ω 12 49
Output Power P OUT
THD+N = 1%,
f
IN = 1kHz, overall
gain = 1.8dB,
T
A = +25°C (Note 4)
R L = 32 Ω 21 52
mW
R L = 16 Ω ,
P OU T = 42m W
0.04
Total Harmonic Distortion Plus
Noise
THD+N
f IN = 1kHz, overall
gain = 3.5dB
(Note 4)
R L = 32 Ω ,
P OU T = 40m W
0.04
%
Register 0x01, B[2:0] = 000 3.5
Register 0x01, B[2:0] = 001 6
Register 0x01, B[2:0] = 010 8
Register 0x01, B[2:0] = 011 10
Register 0x01, B[2:0] = 100 19.5
Register 0x01, B[2:0] = 101 22
Register 0x01, B[2:0] = 110 24
Maximum Gain A VMAX
Register 0x01, B[2:0] = 111 26
dB
Register 0x01, B[7:5] = 000 10
Register 0x01, B[7:5] = 001 20
Register 0x01, B[7:5] = 010 30
Register 0x01, B[7:5] = 011 40
Register 0x01, B[7:5] = 100 50
Register 0x01, B[7:5] = 101 52
Register 0x01, B[7:5] = 110 54
Beep Input Attenuation A V_BEEP
Register 0x01, B[7:5] = 111 56
dB
BW = 22Hz to 22kHz 99
Signal-to-Noise Ratio SNR
R L = 32 Ω,
V OUT = 1V RMS
BW = 22Hz to 22kHz
and A-weighted
101
dB
Slew Rate SR 0.5 V/µs
Capacitive Drive No sustained oscillations 200 pF
Output Resistance in Shutdown R OUT_SHDN
V SHDN = 0V, measured from OUT_ to
SGND
20 k Ω