MAX9850ETI+T Maxim Integrated Products, MAX9850ETI+T Datasheet - Page 9

• Manufacturer Part Number: MAX9850ETI+T
• Description: IC AMP AUDIO .095W STER 28TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class ABr

Specifications of MAX9850ETI+T

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 95mW x 2 @ 16 Ohm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Features: DAC, Depop, Digital Inputs, I²C, I²S, Line Level Inputs & Outputs, Mute, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 28-WQFN Exposed Pad, 28-HWQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(DV
f
otherwise noted. f
MCLK
0.001
0.01
100
DD
0.1
50
45
40
35
30
25
20
15
10
10
90
80
70
60
50
40
30
20
10
5
0
1
0
1.0
TOTAL HARMONIC DISTORTION PLUS NOISE
= 12.288MHz, master integer mode, headphone volume set to +6dB, both channels driven in-phase, T
= AV
10
10
R
LINE IN TO HP OUT
f
THD+N = 10%
IN
AV
R
L
L
= 32Ω
= 1kHz
DD
= 32Ω
DD
THD+N = 1%
1.5
(DAC TO HP) vs. FREQUENCY
= 3.0V
vs. SUPPLY VOLTAGE
vs. HEADPHONE LOAD
= PV
100
P
SUPPLY VOLTAGE (V)
THD+N = 10%
OUT
2.0
IN
POWER OUT
FREQUENCY (Hz)
POWER OUT
DD
= 984.375Hz, A-weighted THD+N.)
= 6mW
_______________________________________________________________________________________
R
LOAD
2.5
100
= 3.0V, AGND = DGND = PGND = 0V, C1 = 0.47µF, C2 = 2.2µF, C
1k
P
OUT
THD+N = 1%
(Ω)
AV
LINE IN TO HP OUT
f
IN
= 50mW
3.0
DD
= 1kHz
= 1.8V
10k
3.5
Stereo Audio DAC with DirectDrive
1000
4.0
100k
-100
-110
-120
140
120
100
160
140
120
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
80
60
40
20
Typical Operating Characteristics (continued)
80
60
40
20
0
0
0
10
0
10
AV
P
R
V
AV
CLOCKING ZEROS INTO DAC
VOLUME SET AT -9.5dB
OUT
POWER-SUPPLY REJECTION RATIO
LOAD
RIPPLE
DD
THD+N = 1%
DD
= P
= PV
vs. FREQUENCY (DAC TO HP)
AND PV
= 10kΩ
HPR
APPLIED TO
10
vs. HEADPHONE LOAD
100
POWER DISSIPATION
DD
+ P
vs. POWER OUT
= DV
THD+N = 10%
POWER OUT (mW)
DD
HPL
FREQUENCY (Hz)
POWER OUT
= 100mV
DD
R
AV
R
R
LOAD
LOAD
LOAD
= 1.8V
DD
100
20
1k
= 3.0VDC
(Ω)
= 16Ω
= 32Ω
P-P
AV
LINE IN TO HP OUT
f
IN
DD
= 1kHz
Headphone Amplifier
AV
= 3.0V
30
10k
DD
= 1.8VDC
1000
100k
40
NREG
-100
-110
-120
-10
-20
-30
-40
-50
-60
-70
-80
-90
180
160
140
120
100
350
300
250
200
150
100
80
60
40
20
0
50
0
0
1.0
10
= C
0
AV
P
R
V
AV
CLOCKING ZEROS INTO DAC
R
LINE IN TO HP OUT
f
IN
vs. FREQUENCY (DAC TO LINE OUT)
OUT
POWER-SUPPLY REJECTION RATIO
LOAD
RIPPLE
L
DD
DD
= 16Ω
= 1kHz
PREG
1.5
= P
= PV
AND PV
R
= 10kΩ
LOAD
APPLIED TO
HPR
100
vs. SUPPLY VOLTAGE
POWER DISSIPATION
DD
SUPPLY VOLTAGE (V)
= C
+ P
= 16Ω
2.0
vs. POWER OUT
= DV
THD+N = 10%
DD
50
POWER OUT (mW)
FREQUENCY (Hz)
POWER OUT
HPL
= 100mV
REF
AV
DD
DD
= 3.0V
R
2.5
1k
LOAD
A
= 1.8VDC
= 1µF, f
P-P
= +25°C, unless
= 32Ω
AV
100
3.0
DD
THD+N = 1%
10k
= 3.0VDC
S
3.5
= 48kHz,
100k
4.0
150
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