Manual

MAX5440
Stereo Volume Control
with Rotary Encoder Interface
-75
-65
-70
-45
-50
-55
-60
-35
-40
-25
-30
0.01 10.1 10 100
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX5440 toc10
FREQUENCY (kHz)
RESPONSE (dB)
V
DD_
= 5V ±100mV
P-P
, V
H
= 5V
V
L_
= 2.5V, W_ SET TO -6dB
0
100
50
200
150
250
300
LOGIC SUPPLY CURRENT
vs. LOGIC SUPPLY VOLTAGE
MAX5440 toc11
LOGIC SUPPLY VOLTAGE (V)
LOGIC SUPPLY CURRENT (µA)
2.5 3.5 4.03.0 4.5 5.0 5.5
ACTIVE CURRENT
STANDBY CURRENT
SHUTDOWN
0
100
50
200
150
300
250
350
-40 10-15 35 60 85
ACTIVE LOGIC SUPPLY CURRENT
vs. TEMPERATURE
MAX5440 toc12
TEMPERATURE (
°
C)
LOGIC SUPPLY CURRENT (µA)
V
DD
= V
LOGIC
= 5.5V,
RENCODEA = RENCODEB = 0
1.1752
1.1756
1.1754
1.1762
1.1760
1.1758
1.1768
1.1766
1.1764
1.1770
-40 10-15 356085
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE
MAX5440 toc13
TEMPERATURE (
°
C)
SUPPLY CURRENT (mA)
V
DD
= V
LOGIC
= 5.5V,
RENCODEA = RENCODEB = 0
10
100
1000
0 0.5 2.0 2.51.0 1.5 3.0 3.5 4.0 4.5 5.0
DIGITAL SUPPLY CURRENT
vs. DIGITAL INPUT VOLTAGE
MAX5440 toc14
DIGITAL INPUT VOLTAGE (V)
DIGITAL SUPPLY CURRENT (µA)
200
0
400
800
600
1000
1200
0.01 10.1 10 100
SPECTRAL NOISE DENSITY
MAX5440 toc15
FREQUENCY (kHz)
NOISE (nV/√Hz)
0
1
2
3
4
5
6
7
8
2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY CURRENT
vs. INPUT VOLTAGE SWEEP
MAX5440 toc16
INPUT VOLTAGE SWEEP (V
H_
)
SUPPLY CURRENT (mA)
V
DD
= V
LOGIC
= 5V, W_ AT 0dB
R
L
= 10kΩ TO V
MIDBIAS
Typical Operating Characteristics (continued)
(V
DD
= +5V, T
A
= +25°C, unless otherwise noted.)
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