MAX5440EAG+ Maxim Integrated Products, MAX5440EAG+ Datasheet - Page 6

• Manufacturer Part Number: MAX5440EAG+
• Description: IC CNTRL VOL STEREO 24-SSOP
• Manufacturer: Maxim Integrated Products
• Type: Stereo Audio Volume Controlr

Specifications of MAX5440EAG+

• Applications: Automotive Systems, Desktop Audio, Set-Top Boxes
• Mounting Type: Surface Mount
• Package / Case: 24-SSOP
• Number Of Pots: Dual
• Taps Per Pot: 32
• Resistance: 1 Ohms
• Wiper Memory: Volatile
• Digital Interface: Serial
• Operating Supply Voltage: 2.7 V to 5.5 V
• Supply Current: 1.4 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Description/function: Stereo Volume Control with Rotary Encoder Interface
• Mounting Style: SMD/SMT
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Temperature Coefficient: 35 PPM / C
• Tolerance: 30 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Stereo Volume Control
with Rotary Encoder Interface
6
_______________________________________________________________________________________
18–22
7, 24
PIN
10
11
12
13
14
15
16
17
23
1
2
3
4
5
6
8
9
RENCODEB
RENCODEA
LEDIND0–
MODEIND
LEDIND4
MIDBIAS
V
NAME
MODE
SHDN
MUTE
GND
BIAS
LOGIC
V
V
W0
W1
H0
H1
L0
L1
DD
SS
Digital Logic Power Supply. Bypass V
as possible.
Rotary Encoder Input B. With RENCODEA, this input provides the rotary encoder control for the
potentiometer (see Figure 1). RENCODEB is internally pulled up to V
Rotary Encoder Input A. With RENCODEB, this input provides the rotary encoder control for the
potentiometer (see Figure 1). RENCODEA is internally pulled up to V
Mute Input. Pull MUTE low to toggle the wiper between the mute setting (see Table 1) and the current
setting. MUTE is pulled up to V
Volume/Balance Control Input. Each high-to-low transition on MODE toggles between the volume and
balance modes. MODE is pulled high internally with a 45kΩ resistor to V
MAX5440 is in volume-control mode.
Active-Low Shutdown Input. Drive SHDN low to place the device in shutdown mode. In shutdown
mode, the MAX5440 stores the last wipers settings. The wipers move to the L_ end of the resistor
string. Terminating shutdown mode restores the wipers to their previous settings.
Ground. Connect pins 7 and 24 together.
Potentiometer 0 High Terminal. H0 and L0 terminals can be reversed.
Potentiometer 0 Low Terminal. L0 and H0 terminals can be reversed.
Potentiometer 0 Wiper Buffered Output
Midbias Voltage Output. V
Bias Generator Input. Bypass with a 1µF capacitor to system ground.
Analog Power Supply. Bypass V
possible.
Negative Power Supply. Bypass V
possible. Connect to GND for single-supply operation.
Potentiometer 1 Wiper Buffered Output
Potentiometer 1 Low Terminal. L1 and H1 terminals can be reversed.
Potentiometer 1 High Terminal. H1 and L1 terminals can be reversed.
LE D Ind i cator O p en- D r ai n Outp ut 0 thr oug h LE D Ind i cator O p en- D r ai n Outp ut 4. LE D IN D 0–LE D IN D 4 for m a
b ar g r ap h i nd i cati on of the cur r ent vol um e or b al ance. In vol um e m od e, al l LE D s off i nd i cates m ute and al l
LE D s on i nd i cates m axi m um vol um e. In b al anced m od e, LE D 2 on i nd i cates center ed or b al anced .
Volume-Control/Balance-Control Mode Indicator Open-Drain Output. Connect to an LED through a
resistor to V
off, the MAX5440 is in volume-control mode.
LOGIC
. When the LED is on, the MAX5440 is in balance-control mode. When the LED is
MIDBIAS
LOGIC
DD
SS
= (V
to ground with a 0.1µF capacitor as close to the device as
to ground with a 0.1µF capacitor as close to the device as
with an internal 45kΩ resistor.
LOGIC
DD
+ V
to ground with a 0.1µF capacitor as close to the device
FUNCTION
SS
) / 2.
LOGIC
LOGIC
LOGIC
Pin Description
with a 45kΩ resistor.
with a 45kΩ resistor.
. On power-up, the