NAME FUNCTION
13——MODE
Volume/Balance Control. Each transition from high to low toggles between volume
and balance modes. MODE is pulled high internally with a 50kΩ resistor to V
LOGIC
.
On power-up, the MAX5457 is in volume-control mode.
24——
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.
3 535 H0 Potentiometer 0 High Terminal. H0 and L0 terminals can be reversed.
4 646 L0 Potentiometer 0 Low Terminal. L0 and H0 terminals can be reversed.
5 757 W0 Potentiometer 0 Wiper Terminal
6 868SHDN
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.
7 979MUTE
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
.
810810 W1 Potentiometer 1 Wiper Terminal
911911 L1 Potentiometer 1 Low Terminal. L1 and H1 terminals can be reversed.
10 12 10 12 H1 Potentiometer 1 High Terminal. H1 and L1 terminals can be reversed.
11 13 11 13 V
SS
Negative Power Supply. Bypass with 0.1µF to ground.
12 14 12 14 GND Ground
13 15 13 15 V
LOGIC
Digital Logic Power Supply. Bypass with 0.1µF to ground.
14 16 14 16 V
DD
Analog Power Supply. Bypass with 0.1µF to ground.
15 1 — —
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
.
16 2 — —
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
.
—— 1 3 BAL1
Channel 1 Balance-Control Input. Pressing BAL1 moves the balance towards
channel 1. BAL1 is internally pulled up with 50kΩ to V
LOGIC
.
—— 2 4 BAL0
Channel 0 Balance-Control Input. Pressing BAL0 moves the balance towards
channel 0. BAL0 is internally pulled up with 50kΩ to V
LOGIC
.
——15 1 VOLDN
Downward Volume-Control Input. Pressing VOLDN moves both wipers towards
the L terminals. VOLDN is internally pulled up with 50kΩ to V
LOGIC
.
——16 2 VOLUP
Upward Volume-Control Input. Pressing VOLUP moves both wipers towards the
H terminals. VOLUP is internally pulled up with 50kΩ to V
LOGIC
.
(34 paginas)
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