MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 6

• Manufacturer Part Number: MAX9791AETI+T
• Description: IC AMP AUDIO 2.2W STER D 28TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class Dr

Specifications of MAX9791AETI+T

• Output Type: 2-Channel (Stereo) with Stereo Headphones and Subwoofer
• Max Output Power X Channels @ Load: 2.2W x 2 @ 4 Ohm; 180mW x 2 @ 32 Ohm
• Voltage - Supply: 4.5 V ~ 5.5 V
• Features: Depop, LDO, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(V
C1 = C2 = 1µF. R
C
Note 3: All devices are 100% production tested at room temperature. All temperature limits are guaranteed by design.
Note 4: AVDD and PVDD must be tied together. If LDO is enabled, set AVDD and PVDD as specified in the Line Regulation row of
Note 5: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For R
Note 6: Specified at T
Note 7: Amplifier Inputs AC-coupled to GND.
Note 8: Guaranteed by ATE characterization; limits are not production tested.
(V
erwise specified. R
= 20kHz AES17, T
HP_EN = 1.)
6
IN2
AVDD
0.001
AVDD
-100
0.01
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
vs. OUTPUT POWER (MAX9792 SPEAKER MODE)
0.1
10
_______________________________________________________________________________________
0
1
vs. FREQUENCY (MAX9792 SPEAKER MODE)
= C
0.01
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
0
= V
= V
the Electrical Characteristics table.
For R
with a 32Ω resistive load connected between HPR, HPL and GND for headphone amplifier. Speaker and headphone mode
transitions are controlled by SPKR_EN and HP_EN inputs, respectively.
R
V
R
COM
L
IN
L
0.5
= 3Ω
= 3Ω
= -3dBFS
PVDD
PVDD
FS = 1V
= 1µF, T
L
f = 6kHz
0.1
1.0
= 4Ω, L = 33µH. For R
FS = 707mV
OUTPUT POWER (W)
RMS
= V
FREQUENCY (kHz)
= V
f = 100Hz
A
L
1.5
IN1
= +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, HP_EN = 0. Headphone mode: SPKR_EN = 1,
= ∞, unless otherwise specified. R
HPVDD
f = 1kHz
HPVDD
A
A
= 20kΩ (A
2.0
1
= +25°C with an 8Ω + 68µH load connected across BTL output for speaker amplifier. Specified at T
= T
RMS
2.5
MIN
= 5V, V
= 5V, V
3.0
10
to T
VSPKR
3.5
GND
MAX
GND
L
100
4.0
, unless otherwise noted. Typical values are at T
= 8Ω, L = 68µH.
= 12dB), R
= V
= V
PGND
PGND
0.001
-100
0.01
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
vs. OUTPUT POWER (MAX9791 SPEAKER MODE)
0.1
10
= V
0
1
vs. FREQUENCY (MAX9791 SPEAKER MODE)
IN2
0.01
= V
0
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
CPGND
R
V
R
= 40.2kΩ (A
L
IN
L
CPGND
= 4Ω
= 4Ω
f = 1kHz
IN1
= -3dBFS
f = 100Hz
0.5
SPEAKER
0.1
= 20kΩ (A
FS = 707mV
= 0, I
OUTPUT POWER (W)
1.0
FREQUENCY (kHz)
= 0, I
LDO_OUT
f = 6kHz
FS = 1V
VHP
1.5
RMS
1
LDO_OUT
VSPKR
= 0dB), C
Typical Operating Characteristics
RMS
2.0
= 0, C
10
= 12dB), R
2.5
= 0, C
IN1
LDO
100
= 470nF, C
3.0
LDO
= 2 x 1µF, C1 = C2 = 1µF. R
A
IN2
= +25°C.) (Note 3)
= 2µF (C
0.001
-100
0.01
= 40.2kΩ (A
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
vs. OUTPUT POWER (MAX9791 SPEAKER MODE)
0.1
10
0
1
vs. FREQUENCY (MAX9791 SPEAKER MODE)
IN2
0.01
TOTAL HARMONIC DISTORTION + NOISE
TOTAL HARMONIC DISTORTION + NOISE
0
R
V
R
= C
f = 1kHz
L
IN
L
LDO
= 8Ω
= 8Ω
= -3dBFS
f = 100Hz
COM
0.1
= 4µF for 1.8V LDO option),
0.5
VHP
OUTPUT POWER (W)
FS = 707mV
f = 6kHz
FREQUENCY (kHz)
= 1µF, measurement BW
= 0dB), C
FS = 1V
1.0
1
L
L
RMS
RMS
= 3Ω, L = 22µH.
= ∞, unless oth-
IN1
1.5
10
A
= +25°C
= 470nF,
100
2.0