max9777etit Maxim Integrated Products, Inc., max9777etit Datasheet - Page 11

• Manufacturer Part Number: max9777etit
• Description: Max9777, Max9778 Stereo 3w Audio Power Amplifiers With Headphone Drive And Input Mux
• Manufacturer: Maxim Integrated Products, Inc.

9, 13, 23, 27
MAX9777
11, 25
3, 4
10
12
14
15
16
17
18
19
20
21
22
24
26
28
EP
—
—
—
—
1
2
5
6
7
8
PIN
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Stereo 3W Audio Power Amplifiers with
9, 13, 23, 27
MAX9778
11, 25
3, 4
10
12
14
16
17
18
19
20
21
22
24
26
15
28
EP
—
—
—
—
5
6
7
8
1
2
GAINA/B
GAINLA
GAINLB
GAINRA
GAINRB
HPS_EN
OUTR+
OUTL+
OUTR-
NAME
PGND
OUTL-
SHDN
MUTE
Headphone Drive and Input Mux
PV
BIAS
GND
INR1
INR2
IN1/2
INL1
INL2
ADD
SDA
HPS
V
SCL
INT
EP
DD
DD
Exposed Paddle. Connect to GND.
Serial Data I/O
Interrupt Output
Power-Supply Input
Left-Channel Input 1
Left-Channel Input 2
Left-Channel Gain Set A
Left-Channel Gain Set B
Power Ground. Connect to GND.
Left-Channel Bridged Amplifier Positive Output. OUTL+ also serves as the
left-channel headphone amplifier output.
Output Amplifier Power Supply
Left-Channel Bridged Amplifier Negative Output
Active-Low Shutdown Input. Connect SHDN to V
Address Select. A logic-high sets the address LSB to 1, a logic-low sets the
address LSB to zero.
Headphone Sense Input. A logic-high configures the device as a single-
ended headphone amp. A logic-low configures the device as a BTL
speaker amp.
DC Bias Bypass Terminal. See the BIAS Capacitor section for capacitor
selection. Connect C
Ground. Connect to PGND.
Right-Channel Input 1
Right-Channel Input 2
Right-Channel Gain Set A
Right-Channel Gain Set B
Right-Channel Bridged Amplifier Positive Output. OUTR+ also serves as the
right-channel headphone amplifier output.
Right-Channel Bridged Amplifier Negative Output
Serial Clock Line
Active-High Mute Input
Headphone Enable. A logic-high enables HPS. A logic-low disables HPS
and the device is always configured as a BTL speaker amplifier.
Gain Select. A logic-low selects the gain set by GAIN_A. A logic-high
selects the gain set by GAIN_B.
Input Select. A logic-low selects amplifier input 1. A logic-high selects
amplifier input 2.
BIAS
from BIAS to GND.
FUNCTION
DD
Pin Description
for normal operation.
11