MAX9789AETJ+ Maxim Integrated Products, MAX9789AETJ+ Datasheet - Page 7

• Manufacturer Part Number: MAX9789AETJ+
• Description: IC AMP AUDIO 2W STER AB 32TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9789AETJ+

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 2W x 2 @ 4 Ohm; 100mW x 2 @ 16 Ohm
• Voltage - Supply: 4.5 V ~ 5.5 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Product: Class-AB
• Output Power: 2 W
• Thd Plus Noise: 0.004 %
• Supply Current: 0.1 mA
• Maximum Power Dissipation: 1990 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 4 Ohms
• Minimum Operating Temperature: - 40 C
• Amplifier Class: AB
• No. Of Channels: 3
• Supply Voltage Range: 4.5V To 5.5V
• Load Impedance: 4ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: TQFN
• Rohs Compliant: Yes
• For Use With: MAX9789AEVKIT+ - EVALUATION KIT FOR MAX9789A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Windows Vista-Compliant, Stereo Class AB Speaker
(V
∞, unless otherwise specified, GAIN1 = 0, GAIN2 = 1 (A
unless otherwise noted. Headphone mode: SPKR_EN = 1, HP_EN = 0. Speaker mode: SPKR_EN = 0, HP_EN = 1.)
0.001
DD
-100
0.01
-10
-20
-30
-40
-50
-60
-70
-80
-90
0.1
10
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
= PV
10
0
Amplifiers and DirectDrive Headphone Amplifiers
vs. OUTPUT POWER (SPEAKER MODE)
R
LEFT TO RIGHT
vs. FREQUENCY (SPEAKER MODE)
L
f
IN
f
DD
= 3Ω
IN
= 20Hz
0.5
= 10kHz
= CPV
100
1.50
1.25
1.00
0.75
0.50
0.25
OUTPUT POWER (W)
RIGHT TO LEFT
0
1.0
FREQUENCY (Hz)
CROSSTALK
0
vs. OUTPUT POWER (SPEAKER MODE)
DD
f
IN
POWER DISSIPATION PER CHANNEL
_______________________________________________________________________________________
= 1kHz
1.5
1k
= HPV
OUTPUT POWER PER CHANNEL (W)
0.5
FS = 0.707V
V
R
2.0
OUT
L
= 8Ω
DD
10k
= -20dB FS
R
f
L
IN
= LDO_EN = +5V, V
2.5
= 8Ω
= 1kHz
1.0
RMS
100k
3.0
R
L
= 4Ω
1.5
0.001
-100
-110
-120
-130
-140
-10
-20
-30
-40
-50
-60
-70
-80
-90
0.01
0.1
Typical Operating Characteristics (continued)
10
0
1
TOTAL HARMONIC DISTORTION PLUS NOISE
0
2.0
0
vs. OUTPUT POWER (SPEAKER MODE)
GND
R
L
VSP
f
= 4Ω
IN
SPEAKER OUTPUT SPECTRUM
f
IN
= 20Hz
= V
= 10kHz
0.5
= 10dB, A
5k
PGND
OUTPUT POWER (W)
FREQUENCY (Hz)
1.0
= V
10k
VHP
CPGND
1.5
FS = 0.707V
V
R
OUT
L
= 3.5dB), measurement BW = 20kHz AES17, T
= 8Ω
15k
= -60dB FS
2.0
= V
f
100
IN
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
= 1kHz
RMS
LDO_SET
10
V
OUTPUT REFERRED
20k
POWER-SUPPLY REJECTION RATIO
RIPPLE
2.5
= 200mV
100
= 0V, C1 = C2 = C
(SPEAKER MODE)
0.001
0.01
FREQUENCY (Hz)
0.1
10
3.5
3.0
2.5
2.0
1.5
1.0
0.5
P-P
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
0
1
vs. OUTPUT POWER (SPEAKER MODE)
OUTPUT POWER vs. LOAD RESISTANCE
1k
R
L
f
IN
= 8Ω
= 10kHz
THD+N = 1%
10k
OUTPUT POWER (W)
(SPEAKER MODE)
0.5
BIAS
f
IN
= 20Hz
R
L
= C
10
THD+N = 10%
100k
(Ω)
f
IN
IN
= 1kHz
1.0
= 1µF. R
A
= +25°C,
f
IN
= 1kHz
L
=
1.5
100
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