Electrical characteristics (continued) – Rainbow Electronics MAX9796 User Manual
Page 5
MAX9796
2.3W, High-Power Class D Audio Subsystem
with DirectDrive Headphone Amplifiers
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= PV
DD
= CPV
DD
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
DD
, I
2
C settings (INA gain = +20dB, INB gain = INC gain =
0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). Speaker load resistors (R
LSP
) are terminated between
OUT+ and OUT-, headphone load resistors are terminated to GND, unless otherwise noted. C1 = C2 = C3 = 1µF. 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
R
L
= 16
Ω
60
Output Power
P
OUT
T
A
= +25°C,
THD+N = 1%
R
L
= 32
Ω
50
mW
Current Limit
170
mA
Gain
A
V
+3
dB
Channel-to-Channel Gain
Tracking
T
A
= +25°C
±1
%
R
L
= 16
Ω (V
OUT
= 800mV
RMS
, f = 1kHz)
0.03
Total Harmonic Distortion Plus
Noise
THD+N
R
L
= 32
Ω (V
OUT
= 800mV
RMS
, f = 1kHz)
0.024
%
BW = 20Hz to 20kHz
92
Signal-to-Noise Ratio
SNR
R
L
= 16
Ω, V
OUT
=
800mV
RMS
A-weighted
93
dB
Slew Rate
SR
0.3
V/µs
Capacitive Drive
C
L
300
pF
Crosstalk
L to R, R to L, f = 10kHz, R
L
= 16
Ω,
V
OUT
= 160mV
RMS
75
dB
VOLUME CONTROL
HP gain (max)
3
SP gain (max)
12
HP gain (min)
-72
IN+6dB = 0
(minimum gain
setting)
SP gain (min)
-63
HP gain (max)
9
SP gain (max)
18
HP gain (min)
-61
Volume Control
IN+6dB = 1
(maximum gain
setting)
SP gain (min)
-57
dB
Mono + 6dB = 0
0
Mono Gain
All outputs
Mono + 6dB = 1
6
dB
INA+20dB = 0 (minimum gain setting)
Set by IN+6dB
Input Pair A Control
INA+20dB = 1 (maximum gain setting)
20
dB
Mute Attenuation (Minimum
Volume)
V
IN
= 1V
RMS
80
dB
DIGITAL INPUTS (
SHDN, SDA, SCL)
Input-Voltage High
V
IH
1.4
V
Input-Voltage Low
V
IL
0.4
V
Input Hysteresis (SDA, SCL)
V
HYS
200
mV
SDA, SCL Input Capacitance
C
IN
10
pF
Input Leakage Current
I
IN
1.0
µA
Pulse Width of Spike Suppressed
t
SP
50
ns