MAX9757ETJ+ Maxim Integrated Products, MAX9757ETJ+ Datasheet - Page 6

• Manufacturer Part Number: MAX9757ETJ+
• Description: IC AMP AUDIO PWR 2.3W AB 32TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9757ETJ+

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 2.3W x 2 @ 3 Ohm; 130mW x 2 @ 16 Ohm
• Voltage - Supply: 4.5 V ~ 5.5 V
• Features: Depop, Short-Circuit and Thermal Protection, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.3W Stereo Speaker Amplifiers and DirectDrive
Headphone Amplifiers with Automatic Level Control
(V
1µF, C
22kHz, T
6
DD
0.001
0.001
0.01
0.01
_______________________________________________________________________________________
100
0.1
0.1
3.0
2.5
2.0
1.5
1.0
0.5
10
10
= PV
1
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
PVSS
10
vs. LOAD RESISTANCE (SPEAKER MODE)
0
1
vs. OUTPUT POWER (SPEAKER MODE)
A
vs. FREQUENCY (HEADPHONE MODE)
V
R
V
R
DD
= +25°C, unless otherwise noted.)
DD
L
DD
L
f
IN
= 3Ω
= 3Ω
0.5
= 1µF, C1 = C2 = 1µF, PREF = unconnected, GAIN1 = 1, GAIN2 = GAIN3 = VOL = 0V, measurement BW = 22Hz to
= 5V
= 1kHz
= 5V
= HPV
THD+N = 1%
OUTPUT POWER = 500mW
100
f
IN
1.0
LOAD RESISTANCE (Ω)
= 10kHz
OUTPUT POWER (W)
OUTPUT POWER
OUTPUT POWER = 1.8W
FREQUENCY (Hz)
DD
1.5
= CPV
1k
10
f
THD+N = 10%
IN
2.0
= 100Hz
DD
2.5
10k
V
f = 1kHz
= IN = +5.0V, GND = PGND = CPGND = 0V, SHDN = V
DD
3.0
= 5V
100k
100
3.5
0.001
0.001
0.01
0.01
100
0.1
3.0
2.5
2.0
1.5
1.0
0.5
0.1
10
10
1
0
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
POWER DISSIPATION vs. OUTPUT POWER
10
0
0
vs. OUTPUT POWER (SPEAKER MODE)
vs. FREQUENCY (HEADPHONE MODE)
V
R
V
R
DD
L
f = 1kHz
P
f
DD
L
IN
0.5
= 4Ω
OUT
0.5
= 4Ω
= 5V
= 1kHz
= 5V
= P
OUTPUT POWER = 500mW
100
1.0
f
IN
1.0
OUTL
(SPEAKER MODE)
OUTPUT POWER (W)
OUTPUT POWER (W)
= 10kHz
OUTPUT POWER = 1.5W
FREQUENCY (Hz)
1.5
R
+ P
L
1.5
R
= 8Ω
OUTR
L
2.0
= 4Ω
1k
f
IN
2.0
Typical Operating Characteristics
= 100Hz
2.5
2.5
10k
3.0
3.0
3.5
100k
3.5
4.0
DD
0.001
0.001
0.01
0.01
-100
-110
-120
, REGEN = DR = SET = GND, C
100
0.1
0.1
-10
-20
-30
-40
-50
-60
-70
-80
-90
10
10
1
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
10
10
0
vs. OUTPUT POWER (SPEAKER MODE)
vs. FREQUENCY (HEADPHONE MODE)
V
R
V
R
V
R
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (SPEAKER MODE)
DD
L
DD
L
RIPPLE
L
f
= 8Ω
= 8Ω
= 8Ω
IN
= 5V
= 5V
= 1kHz
OUTPUT POWER = 500mW
100
= 200mV
100
0.5
f
IN
OUTPUT POWER (W)
OUTPUT POWER = 1W
= 10kHz
FREQUENCY (Hz)
FREQUENCY (Hz)
P-P
1.0
1k
1k
f
IN
= 100Hz
10k
10k
1.5
BIAS
100k
100k
2.0
=