MAX9790AETJ+ Maxim Integrated Products, MAX9790AETJ+ Datasheet - Page 11

• Manufacturer Part Number: MAX9790AETJ+
• Description: IC AMP AUDIO 2W STER AB 32TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9790AETJ+

• 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
• For Use With: MAX9789AEVKIT+ - EVALUATION KIT FOR MAX9789A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(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.)
DD
= PV
Windows Vista-Compliant, Stereo Class AB Speaker
DD
Amplifiers and DirectDrive Headphone Amplifiers
= CPV
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
DD
______________________________________________________________________________________
10
RIPPLE REJECTION vs. FREQUENCY
= HPV
V
LINE-TRANSIENT RESPONSE
LDO SHUTDOWN RESPONSE
LDO_OUT
100
DD
FREQUENCY (Hz)
= LDO_EN = +5V, GND = PGND = CPGND = LDO_SET = 0V, C1 = C2 = C
= 4.75V
200ms/div
1ms/div
V
1k
LDO_OUT
V
I
OUTPUT REFERRED
OUT
RIPPLE
= 10mA
= 3.3V
10k
I
= 200mV
LOAD
MAX9789A toc48
MAX9789A toc46
Typical Operating Characteristics (continued)
= 0mA
P-P
VSP
100k
LDO_EN
2V/div
V
2V/div
V
1V/div
5.5V
4.5V
LDO_OUT
(AC-COUPLED)
20mV/div
= 10dB, A
LDO_OUT
DD
VHP
= 3.5dB), measurement BW = 20kHz AES17, T
-100
-110
-120
0.01
-20
-30
-40
-50
-60
-70
-80
-90
0.1
10
1
10
10
LDO LOAD-TRANSIENT RESPONSE
LDO CROSSTALK vs. FREQUENCY
RIGHT SPEAKER TO LDO
OUTPUT NOISE vs. FREQUENCY
LEFT SPEAKER TO LDO
100
100
FREQUENCY (Hz)
FREQUENCY (Hz)
20ms/div
1k
1k
V
P
R
I
LOAD
LDO_OUT
OUT
L
= 4Ω
10k
10k
= 2W
= 0mA
BIAS
MAX9789A toc47
= 4.75V
= C
100k
100k
IN
I
15mA/div
AC-COUPLED
V
10mV/div
A
LDO_OUT
LDO_OUT
= 1µF. R
= +25°C,
L
= ∞,
11