2.3W, High-Power Class D Audio Subsystem
with DirectDrive Headphone Amplifiers
ABSOLUTE MAXIMUM RATINGS
DD
V
to GND ...........................................................................+6V
Continuous Input Current CPV ....................................+260mA
SS
PV
CPV
to PGND.......................................................................+6V
Continuous Input Current (all other pins) ......................... 20mA
Duration of Short Circuit Between
DD
to CPGND..................................................................+6V
DD
CPV to CPGND.....................................................-6V to +0.3V
OUT+ and OUT-......................................................Continuous
Duration of HP_ OUT_ Short Circuit to
SS
V
SS
to CPGND..........................................................-6V to +0.3V
C1N.......................................(CPV - 0.3V) to (CPGND + 0.3V)
GND or PV ..........................................................Continuous
Continuous Power Dissipation (T = +70°C)
A
36-Bump (3mm x 3mm) UCSP Multilayer Board
SS
DD
C1P.......................................(CPGND - 0.3V) to (CPV
+ 0.3V)
+ 0.3V)
DD
HPL, HPR to GND...................(CPV - 0.3V) to (CPV
SS
DD
GND to PGND and CPGND................................................ 0.3V
to PV and CPV .................................................... 0.3V
(derate 17.0mW/°C above +70°C)...........................1360.5mW
Junction Temperature......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
MAX796
V
DD
DD
DD
SDA, SCL to GND.....................................................-0.3V to +6V
All other pins to GND..................................-0.3V to (V + 0.3V)
DD
Continuous Current In/Out of PV , PGND, CPV , CPGND,
DD
DD
OUT_ _, HPR, and HPL................................................ 800mA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
2
(V
= PV
= CPV
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V , I C settings (INA gain = +20dB, INB gain = INC gain =
DD
DD
DD
DD
0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). Speaker load resistors (R
OUT+ and OUT-, headphone load resistors are terminated to GND, unless otherwise noted. C1 = C2 = C3 = 1µF. T = T
) are terminated between
LSP
to T
,
A
MIN
MAX
unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
A
PARAMETER
GENERAL
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
,
DD
PV
,
Supply Voltage Range
Inferred from PSRR test
2.7
5.5
V
DD
CPV
DD
Output mode 1, 6, 11 (Rx mode)
Output mode 4, 9, 14 (HP mode)
Output mode 2, 7, 12 (SP mode)
Output mode 3, 8, 13 (SP and HP modes)
Current in mute
6.3
8
10
12.6
17.5
21
Quiescent Current
I
mA
DD
11.8
15.1
4.7
0.1
Mute Current
I
10
mA
µA
MUTE
Hard shutdown
SHDN = GND
10
2
Shutdown Current
I
SHDN
See the I C Interface
section
Soft shutdown
8.5
30
28
15
Time from shutdown or power-on to full
operation
Turn-On Time
t
ms
ON
B and C pair inputs, T = +25°C,
A
VOL = max
17.5
41.0
8.0
kΩ
Input Resistance
R
IN
A pair inputs, T = +25°C, +20dB
3.5
45
5.5
50
kΩ
dB
V
A
Common-Mode Rejection Ratio
Input DC Bias Voltage
CMRR
T
= +25°C, V
= 500mV
IN
A
V
IN_ inputs
1.12
1.25
1.38
BIAS
2
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