MAX9770ETI+ Maxim Integrated Products, MAX9770ETI+ Datasheet - Page 3

• Manufacturer Part Number: MAX9770ETI+
• Description: IC AMP AUDIO 1.2W MONO D 28TQFN
• Manufacturer: Maxim Integrated Products
• Type: Class Dr

Specifications of MAX9770ETI+

• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.2W x 1 @ 8 Ohm; 80mW x 2 @ 16 Ohm
• Voltage - Supply: 2.5 V ~ 5.5 V
• Features: Depop, Input Multiplexer, Mute, 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

ELECTRICAL CHARACTERISTICS (continued)
(V
speaker load connected between OUT+ and OUT-, headphone load connected between HPOUT_ and GND, T
unless otherwise noted. Typical values are at T
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Output Switching Frequency
SYNC Frequency Lock Range
Efficiency
Gain (MAX9770)
Gain Accuracy
Speaker Path Off-Isolation
Click-and-Pop Level
HEADPHONE AMPLIFIER (GAIN1 = 1, GAIN2 = 0, HPS = V
Output Offset Voltage
Power-Supply Rejection Ratio
Output Power
Total Harmonic Distortion Plus
Noise
DD
1.2W, Low-EMI, Filterless, Mono Class D Amplifier
= PV
DD
PARAMETER
with Stereo DirectDrive Headphone Amplifiers
= CPV
DD
_______________________________________________________________________________________
= 3.3V, GND = PGND = CPGND = 0V, SHDN = 3.3V, C1 = C2 = 1µF, C
SYMBOL
THD+N
THD+N
PSRR
P
SNR
V
K
A
OUT
f
OS
η
CP
S
V
A
= +25°C.) (Notes 1, 2)
(Note 4)
T
f = 1kHz,
THD+N = 1%
(Note 3)
R
R
R
R
R
f = 1kHz
R
SYNC = GND
SYNC = unconnected
SYNC = V
P
GAIN1 = 0, GAIN2 = 0
GAIN1 = 0, GAIN2 = 1
GAIN1 = 1, GAIN2 = 0
GAIN1 = 1, GAIN2 = 1
HPS = V
f = 1kHz
Peak voltage,
A-weighted, 32
samples per second
(Notes 4, 5)
A
L
L
L
L
L
L
O
= +25°C,
= 32Ω, P
= 16Ω, P
= 8Ω, P
= 4Ω, P
= 8Ω, P
= 8Ω, V
= 1000mW, f = 1kHz
DD
DD
V
V
V
V
OUT
OUT
OUT
OUT
, headphone amplifier active,
DD
RIPPLE
RIPPLE
RIPPLE
OUT
OUT
DD
CONDITIONS
)
= 300mW, f = 1kHz
= 300mW, f = 1kHz
= 500mW,
= 2V
= 2.5V to 5.5V, T
= 50mW, f = 1kHz
= 35mW, f = 1kHz
V
V
= 200mV
= 200mV
= 200mV
DD
DD
RMS
= 3.3V
= 5V
Into shutdown
Out of shutdown
Into mute
Out of mute
, A-weighted
P-P
P-P
P-P
, f = 217Hz
, f = 1kHz
, f = 20kHz
R
R
R
R
A
L
L
L
L
= +25°C
= 32Ω
= 16Ω
= 32Ω
= 16Ω
BIAS
1280
MIN
980
800
65
40
= 0.047µF, SYNC = GND, R
±120kHz
0.025
0.015
1100
1450
1220
TYP
0.03
85.9
0.03
102
0.1
-76
-55
-83
-69
85
±5
76
75
82
56
55
40
60
80
6
3
9
0
A
= T
MAX
1220
1620
2000
±10
±5
MIN
to T
UNITS
kHz
kHz
mW
L
mV
dB
dB
dB
dB
dB
%
%
%
%
MAX
= ∞,
3
,