MAX5456EEE+ Maxim Integrated Products, MAX5456EEE+ Datasheet - Page 12

• Manufacturer Part Number: MAX5456EEE+
• Description: IC POT STER AUDIO TAPER 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5456EEE+

• Taps: 32
• Resistance (ohms): 10K
• Number Of Circuits: 2
• Temperature Coefficient: 50 ppm/°C Typical
• Memory Type: Volatile
• Interface: Pushbutton
• Voltage - Supply: 2.7 V ~ 5.5 V, ±2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Resistance In Ohms: 10K
• Number Of Pots: Dual
• Taps Per Pot: 32
• Resistance: 10 KOhms
• Wiper Memory: Volatile
• Digital Interface: Up/Down
• Operating Supply Voltage: 2.7 V to 5.5 V
• Supply Current: 1 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Description/function: Stereo Audio Taper Potentiometer
• Mounting Style: SMD/SMT
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Tolerance: 30 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX5457 MODE input toggles between volume-
and balance-control modes. Force MODE low to toggle
between volume-control and balance-control modes.
For example, driving MODE low once while in volume-
control mode, switches the MAX5457 to balance-con-
trol mode. Driving mode low once again, switches the
MAX5457 back to volume-control mode. MODE is inter-
nally pulled high with a 50kΩ resistor to V
MAX5457 powers up in volume-control mode.
MODE_IND is the volume-control and balance-control
mode indicator with an open-drain output. Connect
MODE_IND to an LED through a pullup resistor to
V
control mode. When the LED is off, the MAX5457 is in
volume-control mode. See the Mode Control, MODE sec-
tion for more detail on switching between modes.
Shutdown does not affect the state of MODE_IND.
Stereo Audio Taper Potentiometers
with Pushbutton Interface
12
LOGIC
______________________________________________________________________________________
. When the LED is on, the MAX5457 is in balance-
Mode Indicator, MODE_IND
Mode Control, MODE
LOGIC
. The
The MAX5456/MAX5457 do not respond to simultane-
ous button pushes. Pushing more than one button at the
same time stops the wipers in their present states. Only
a single button push configures the device. Additionally,
a 40ms blocking period affects all other inputs when
releasing any input forced low. The MAX5456/MAX5457
do not respond to any logic input until the blocking peri-
od ends. If multiple wiper-control buttons are pressed,
all wiper-control connections must be released before
the part will respond to further commands.
Figure 6 shows a volume/balance application using the
MAX5457. The op amp is connected in a follower (non-
inverting gain) configuration to isolate the potentiome-
ter’s wiper impedance from the load and provide drive
capability. Connect the W_ of the MAX5457 to the posi-
tive input of a noninverting gain amp. The pushbutton
potentiometers attenuate the input signals. Use the
MODE input to switch between volume-control and bal-
ance-control modes.
Stereo Volume/Balance Control
Applications Information
Multiple Button Pushes