2 x 1.5W, Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
ABSOLUTE MAXIMUM RATINGS
DD
V
to GND..............................................................................6V
Duration of Short Circuit Between
PV
CPV
to PGND .........................................................................6V
OUT_+ and OUT_- ..................................................Continuous
Duration of HP_, OUT_ Short Circuit to
DD
to CPGND....................................................................6V
DD
CPV to CPGND.....................................................-6V to +0.3V
GND or PV ..........................................................Continuous
Continuous Power Dissipation (T = +70°C)
A
SS
DD
V
SS
to CPGND..........................................................-6V to +0.3V
C1N.......................................(CPV - 0.3V) to (CPGND + 0.3V)
36-Bump (3mm x 3mm) UCSP Multilayer Board
(derate 17.0mW/°C above +70°C)...........................1360.5mW
32-Pin (5mm x 5mm) TQFN Single-Layer Board
SS
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 21.3mW/°C above +70°C)...........................1702.1mW
32-Pin TQFN Multilayer Board (derate 34.5mW/°C
above +70°C)...........................................................275±.6mW
Junction Temperature......................................................+150°C
Operating Temperature Range ...........................-40°C to +±5°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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..................................................±±00mA
Continuous Input Current CPV ......................................260mA
SS
Continuous Input Current (all other pins) .........................±20mA
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.
5/MAX976
ELECTRICAL CHARACTERISTICS
(V
= PV
= CPV
= 3.3V, V
= V
= V
= 0V, SHDN = V , I2C settings (INA gain = +20dB, INB gain = INC gain =
DD
DD
DD
GND
PGND
CPGND 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
A
MIN
T
MAX
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
V
, P
PVDD
,
DD VDD
C
Supply Voltage Range
Inferred from PSRR test
2.7
5.5
V
Output mode 1, 6, 11 (Rx mode)
Output mode 4, 9, 14 (HP mode)
Output mode 2, 7, 12 (SP mode)
Output mode 3, ±, 13 (SP and HP mode)
Output mode 1, 6, 11 (Rx mode)
Output mode 4, 9, 14 (HP mode)
Output mode 2, 7, 12 (SP mode)
Output mode 3, ±, 13 (SP and HP mode)
Current in mute (low power)
6.3
±
10
12.6
15
Quiescent Current (Mono)
Quiescent Current (Stereo)
I
I
mA
mA
DD
DD
9.5
12.9
7
1±
9
16.5
20
Mute Current
I
4.7
0.1
10
10
mA
µA
MUTE
Hard shutdown
SHDN = GND
2
Shutdown Current
I
SHDN
See the I C Interface
section
Soft shutdown
±.5
30
2±
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
kΩ
Input Resistance
R
IN
A pair inputs, T = +25°C, +20dB
3.5
45
5.5
50
±.0
60
kΩ
dB
V
A
Common-Mode Rejection Ratio
Input DC Bias Voltage
CMRR
T = +25°C, f = 1kHz (Note 2)
A IN
V
IN_ inputs
1.12
1.25
1.3±
BIAS
2
_______________________________________________________________________________________
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