MAX9776EVKIT+ Maxim Integrated Products, MAX9776EVKIT+ Datasheet - Page 30

• Manufacturer Part Number: MAX9776EVKIT+
• Description: EVALUATION KIT FOR MAX9776
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r

Specifications of MAX9776EVKIT+

• Amplifier Type: Class D
• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.5W x 1 @ 4 Ohm; 60mW x 2 @ 16 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: MAX9776
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2 x 1.5W, Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
MONO+6dB in the Output Mode Control register allows
an extra 6dB of gain on the internal mono signal:
1 = Additional 6dB of gain is applied to the internal
Mono (M) signal path.
0 = No additional gain is applied to the Internal Mono
(M) signal path.
The MAX9775 has five output amplifiers: a mono
receiver amplifier, a stereo DirectDrive headphone
Table 8. Output Mode Control Register
Table 9. Output Modes
— = Amplifier off.
L = Left signal.
R = Right signal.
M = Mono signal.
30
Output Mode Control
MODE
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
______________________________________________________________________________________
B3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
REGISTER
B2
OUTMODE
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
B0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
B7
1
M +
RECEIVER
1
/
2
MUTE
1
(L + R)
/
—
—
—
—
—
—
—
—
—
2
—
—
—
M
B6
0
(L + R)
B5
0
LEFT HP
MUTE
L + M
L + M
—
—
—
—
—
—
—
—
—
M
M
L
L
amplifier, and a stereo Class D amplifier. The MAX9776
has four output amplifiers: a mono receiver amplifier, a
stereo DirectDrive headphone amplifier, and a mono
Class D amplifier.
Table 9 shows how each of the three internal signals—
Left (L), Right (R), and Mono (M)—are mixed and rout-
ed to the various outputs.
MONO+6dB
RIGHT HP
B4
R + M
R + M
MUTE
—
—
—
—
—
—
—
—
—
M
M
R
R
LEFT SPK
B3
MUTE
L + M
L + M
—
—
—
—
—
—
—
—
—
M
M
L
L
MAX9775
OUTMODE (Table 9)
B2
RIGHT
Output Mode Control
R + M
R + M
MUTE
—
—
—
—
—
—
—
—
—
M
M
R
R
B1
L + R + 2M
L + R + 2M
MAX9776
MUTE
L + R
L + R
SPK
—
—
—
—
—
—
—
—
—
M
M
B0