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MAX9729ETI+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
MAX9729
Stereo Headphone Amplifier with BassMax,
Volume Control, and Input Mux
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (3V Supply) (continued)
(V
DD
= PV
DD
= SHDN = 3V, PGND = SGND = 0V, C1 = C2 = C3 = 1µF, BM_ = 0V, maximum gain setting = 6dB, volume attenuation
setting = -16dB (overall gain = -10dB), BassMax disabled. Load connected between OUT_ and PGND where specified. THD+N
measurement BW = 22Hz to 22kHz. T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Into shutdown 81
Click-and-Pop Level K
CP
Peak voltage, A-
weighted, 32 samples
per second
(Notes 3 and 5)
Out of shutdown 80
dBV
Charge-Pump Switching Frequency f
CP
505 600 730 kHz
Crosstalk
L to R, or R to L, f = 10kHz, V
OUT
=
1V
RMS
, R
L
= 32Ω, both channels loaded
78 dB
DIGITAL INPUTS (SHDN, SDA, SCL, BEEP_EN)
Input High Voltage V
IH
1.4 V
Input Low Voltage V
IL
0.4 V
Input Leakage Current -1 +1 µA
DIGITAL OUTPUTS (SDA)
Output Low Voltage V
OL
I
OL
= 3mA 0.4 V
Output High Current I
OH
V
SDA
= V
DD
1µA
ELECTRICAL CHARACTERISTICS (2.4V Supply)
(V
DD
= PV
DD
= SHDN = 2.4V, PGND = SGND = 0V, C1 = C2 = C3 = 1µF, BM_ = 0V, maximum gain setting = 6dB, volume attenuation
setting = -16dB (overall gain = -10dB), BassMax disabled. Load connected between OUT_ and PGND where specified. THD+N
measurement BW = 22Hz to 22kHz. T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Quiescent Current I
DD
No load (Note 3) 4.5 mA
Shutdown Current I
SHDN
V
SHDN
= 0V 4 µA
R
L
= 16Ω 32
Output Power P
OUT
THD+N = 1%,
f
IN
= 1kHz, overall
gain = 3.5dB,
T
A
= +25°C
(Note 4)
R
L
= 32Ω 32
mW
R
L
= 16Ω ,
P
OU T
= 23m W
0.03
Total Harmonic Distortion Plus
Noise
THD+N
f
IN
= 1kHz, overall
gain = 3.5dB
(Note 4)
R
L
= 32Ω ,
P
OU T
= 23m W
0.03
%
f = 217Hz 90
f = 1kHz 85
Power-Supply Rejection Ratio PSRR
100mV
P-P
ripple
(Note 3)
f = 10kHz 61
dB
MAX9729
Stereo Headphone Amplifier with BassMax,
Volume Control, and Input Mux
_______________________________________________________________________________________ 5
TIMING CHARACTERISTICS
(V
DD
= PV
DD
= SHDN = 3V, PGND = SGND = 0V, C1 = C2 = C3 = 1µF, BM_ = 0V, maximum gain setting = 6dB, volume setting = -16dB
(overall gain = -10dB), BassMax disabled. Load connected between OUT_ and PGND where specified. T
A
= T
MIN
to T
MAX
, unless other-
wise noted. Typical values are at T
A
= +25°C.) (Notes 1 and 6)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Serial Clock Frequency f
SCL
0 400 kHz
Bus Free Time Between a STOP and a
START Condition
t
BUF
1.3 µs
Hold Time Repeated for a START
Condition
t
HD:STA
0.6 µs
Low Period of the SCL Clock t
LOW
1.3 µs
High Period of the SCL Clock t
HIGH
0.6 µs
Setup Time for a Repeated START
Condition
t
SU:STA
0.6 µs
Data Hold Time t
HD:DAT
0 0.9 µs
Data Setup Time t
SU:DAT
100 ns
Rise Time of Both SDA and SCL Signals t
r
300 ns
Fall Time of Both SDA and SCL Signals t
f
300 ns
Setup Time for STOP Condition t
SU:STO
0.6 µs
Pulse Width of Suppressed Spike t
SP
50 ns
Capacitive Load for Each Bus Line C
L_BUS
400 pF
ELECTRICAL CHARACTERISTICS (2.4V Supply) (continued)
(V
DD
= PV
DD
= SHDN = 2.4V, PGND = SGND = 0V, C1 = C2 = C3 = 1µF, BM_ = 0V, maximum gain setting = 6dB, volume attenuation
setting = -16dB (overall gain = -10dB), BassMax disabled. Load connected between OUT_ and PGND where specified. THD+N
measurement BW = 22Hz to 22kHz. T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BW = 22Hz to 22kHz 98
Signal-to-Noise Ratio SNR
R
L
= 32Ω,
V
OUT
= 1V
RMS
,
overall gain =
3.5dB
BW = 22Hz to 22kHz
and A-weighted
101
dB
Into shutdown 79
Click-and-Pop Level K
CP
Peak voltage,
A-weighted,
32 samples per
second
(Notes 3 and 5)
Out of shutdown 79
dBV
Note 1: All specifications are 100% tested at T
A
= +25°C. Temperature limits are guaranteed by design.
Note 2: V
DD
and PV
DD
must be connected together.
Note 3: Inputs AC-coupled to SGND.
Note 4: Both channels loaded and driven in phase.
Note 5: Headphone testing performed with a 32Ω resistive load connected to PGND. Mode transitions are controlled by SHDN. K
CP
level is calculated as 20log[(peak voltage during mode transition, no input signal)/1V
RMS
]. Units are expressed in dBV.
Note 6: Guaranteed by design.
MAX9729
Stereo Headphone Amplifier with BassMax,
Volume Control, and Input Mux
6 _______________________________________________________________________________________
Typical Operating Characteristics
(V
DD
= PV
DD
= SHDN = 3V, PGND = SGND = 0V, C1 = C2 = C3 = 1µF, C
IN
= 1µF (1206 case size, X7R dielectric ceramic capacitor),
BM_ = 0V, maximum gain setting = 3.5dB, volume attenuation setting = 0dB (total voltage gain = 3.5dB), BassMax disabled. Load
connected between OUT_ and PGND where specified. THD+N measurement BW = 22Hz to 22kHz. Both channels loaded and driven
in phase. T
A
= +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9729 toc01
OUTPUT POWER PER CHANNEL (mW)
THD+N (%)
50 60 7010 20 30 40080
100
0.01
0.1
1
10
V
DD
= 3V
R
L
= 16Ω
f
IN
= 100Hz
f
IN
= 5kHz
f
IN
= 1kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9729 toc02
OUTPUT POWER PER CHANNEL (mW)
THD+N (%)
50 60 7010 20 30 40080
100
0.01
0.1
1
10
V
DD
= 3V
R
L
= 32Ω
f
IN
= 100Hz
f
IN
= 1kHz
f
IN
= 5kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9729 toc03
OUTPUT POWER PER CHANNEL (mW)
THD+N (%)
0 5 10 15 20 25 30 35 40 45 50
100
0.01
0.1
1
10
V
DD
= 2.4V
R
L
= 16Ω
f
IN
= 100Hz
f
IN
= 1kHz
f
IN
= 5kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9729 toc04
OUTPUT POWER PER CHANNEL (mW)
THD+N (%)
0 5 10 15 20 25 30 35 40 45 50
100
0.01
0.1
1
10
V
DD
= 2.4V
R
L
= 32Ω
f
IN
= 100Hz
f
IN
= 1kHz
f
IN
= 5kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9729 toc05
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.1
0.01
1
0.001
10 100k
V
DD
= 3V
R
L
= 16Ω
P
OUT
= 42mW
P
OUT
= 9mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9729 toc06
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
0.001
10 100k
V
DD
= 3V
R
L
= 32Ω
P
OUT
= 40mW
P
OUT
= 5mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9729 toc07
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
0.001
10 100k
V
DD
= 2.4V
R
L
= 16Ω
P
OUT
= 23mW
P
OUT
= 8mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9729 toc08
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01
0.1
1
0.001
10 100k
V
DD
= 2.4V
R
L
= 32Ω
P
OUT
= 23mW
P
OUT
= 3mW
0
50
200
100
150
300
250
350
0 20 40 60 80 100 140120 160 180
POWER DISSIPATION
vs. OUTPUT POWER
MAX9729 toc09
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
V
DD
= 3V
f
IN
= 1kHz
P
OUT
= P
OUTL
+ P
OUTR
R
L
= 32Ω
R
L
= 16Ω
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28

MAX9729ETI+

Mfr. #:
Buy MAX9729ETI+
Manufacturer:
Maxim Integrated
Description:
IC AMP AUDIO .052W STER 28TQFN
Lifecycle:
New from this manufacturer.
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