max9770euit Maxim Integrated Products, Inc., max9770euit Datasheet - Page 3

• Manufacturer Part Number: max9770euit
• Description: 1.2w Low-emi, Filterless, Mono Class D Amplifier With Stereo Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

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 (MAX9772)
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
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
PSRR
P
SNR
V
K
OUT
A
A
f
OS
η
CP
S
V
V
A
= +25°C.) (Notes 1, 2)
MAX9770
MAX9772
(Note 4)
T
f = 1kHz,
THD+N = 1%
(Note 3)
R
R
MAX9772, R
f = 1kHz
R
SYNC = GND
SYNC = FLOAT
SYNC = V
P
GAIN1 = 0, GAIN2 = 0
GAIN1 = 0, GAIN2 = 1
GAIN1 = 1, GAIN2 = 0
GAIN1 = 1, GAIN2 = 1
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
O
= +25°C,
= 8Ω, P
= 4Ω, P
= 8Ω, V
= 1000mW, f = 1kHz
DD
DD
V
MAX9770, V
f = 217Hz
MAX9772, V
f = 217Hz
V
V
OUT
OUT
OUT
, headphone amplifier active,
DD
RIPPLE
RIPPLE
L
DD
= 8Ω, P
CONDITIONS
)
= 300mW, f = 1kHz
= 300mW, f = 1kHz
= 2V
= 2.5V to 5.5V, T
V
V
= 200mV
= 200mV
DD
DD
RMS
OUT
= 3.3V
= 5V
Into shutdown
Out of shutdown
Into mute
Out of mute
RIPPLE
RIPPLE
, A-weighted
= 500mW,
P-P
P-P
= 200mV
= 200mV
, f = 1kHz
, f = 20kHz
R
R
R
R
A
L
L
L
L
= +25°C
= 32Ω
= 16Ω
= 32Ω
= 16Ω
P-P
P-P
,
,
BIAS
1280
MIN
980
800
65
40
= 0.047µF, SYNC = GND, R
±120kHz
0.025
1100
1450
1220
TYP
0.03
85.9
15.6
102
0.1
-76
-55
-83
-69
85
12
20
±5
76
75
85
82
56
55
40
60
80
6
3
9
0
6
A
= T
MAX
1220
1620
2000
±10
±14
±5
MIN
to T
UNITS
kHz
kHz
mW
mV
L
dB
dB
dB
dB
dB
dB
%
%
%
MAX
= ∞,
3
,