Volume-Control/Balance-Control Mode Indicator Open-Drain Output. Connect to
an LED through a resistor to V
LOGIC
. When the LED is on, the MAX5457 is in balance-
control mode. When the LED is off, the MAX5457 is in volume-control mode. See the
Mode Indicator, MODE_IND section for more detail.
5 5 H0 Potentiometer 0 High Terminal. H0 and L0 terminals can be reversed.
6 6 L0 Potentiometer 0 Low Terminal. L0 and H0 terminals can be reversed.
7 7 W0 Potentiometer 0 Wiper Terminal
88SHDN
Active-Low Shutdown Input. In shutdown mode, the MAX5456/MAX5457 store the last
wiper settings. The wipers move to the L end of the resistor string, and the H end of
the resistor string disconnects from the signal input. Terminating shutdown mode
restores the wipers to their previous settings.
99MUTE
Mute Input. When MUTE is low, the wiper goes to the highest attenuation setting (see
Table 1). MUTE is internally pulled up with 50kΩ to V
LOGIC
.
10 10 W1 Potentiometer 1 Wiper Terminal
11 11 L1 Potentiometer 1 Low Terminal. L1 and H1 terminals can be reversed.
12 12 H1 Potentiometer 1 High Terminal. H1 and L1 terminals can be reversed.
13 13 V
SS
Negative Power Supply. Bypass with 0.1µF to ground.
14 14 GND Ground
15 15 V
LOGIC
Digital Logic Power Supply. Bypass with 0.1µF to ground.
16 16 V
DD
Analog Power Supply. Bypass with 0.1µF to ground.
1—DN/BAL0
Downward Volume/Channel 0 Balance-Control Input. In volume mode, pressing
DN/BAL0 moves both wipers towards the L terminals. In balance mode, pressing
DN/BAL0 moves the balance towards channel 0. DN/BAL0 is internally pulled up with
50kΩ to V
LOGIC
.
2—UP/BAL1
Upward Volume/Channel 1 Balance-Control Input. In volume mode, pressing UP/BAL1
moves both wipers towards the H terminals. In balance mode, pressing UP/BAL1
moves the balance towards channel 1. UP/BAL1 is internally pulled up with 50kΩ to
V
LOGIC
.
—3BAL1
Channel 1 Balance-Control Input. Pressing BAL1 moves the balance towards channel
1. BAL1 is internally pulled up with 50kΩ to V
LOGIC
.
—4BAL0
Channel 0 Balance-Control Input. Pressing BAL0 moves the balance towards channel
0. BAL0 is internally pulled up with 50kΩ to V
LOGIC
.
—1VOLDN
Downward Volume-Control Input. Pressing VOLDN moves both wipers towards
the L terminals. VOLDN is internally pulled up with 50kΩ to V
LOGIC
.
—2VOLUP
Upward Volume-Control Input. Pressing VOLUP moves both wipers towards the
H terminals. VOLUP is internally pulled up with 50kΩ to V
LOGIC
.
