Datasheet

MAX5407
32-Tap Audio Logarithmic Taper
Digital Potentiometer
4 _______________________________________________________________________________________
32-Tap Audio Logarithmic Taper
Digital Potentiometer
Typical Operating Characteristics (continued)
(V
DD
= +5V, T
A
= +25°C, unless otherwise noted.)
0
-5
-10
-15
-20
0.001 10.01 0.1 10 100 1000
FREQUENCY RESPONSE
MAX5407 toc07
FREQUENCY (kHz)
GAIN (dB)
TAP POSITION 6
0.00001
0.0001
0.001
0.01
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
MAX5407 toc08
FREQUENCY (kHz)
THD+N (%)
0.01 10.1 10 100
TAP POSITION 6
Pin Description
PIN NAME FUNCTION
1 H High Terminal of Resistor
2 GND Ground
3 W Wiper Terminal of Resistor
4 L Low Terminal of Resistor
5U/D
Up/Down Control Input. With CS high, a low-to-high transition increments or decrements the wiper
position, depending on the mode.
6CS
Chip-Select Input. A low-to-high CS transition determines the mode: increment
if U/D is high, decrement if U/D is low.
7V
DD
Power Supply
8 ZCEN Zero-Crossing Detection Enable Input. Set to low to enable zero-crossing detection.
0
0.15
0.10
0.05
0.20
0.25
0.30
0.35
0.40
0.45
0.50
-40 10-15 35 60 85
SUPPLY CURRENT vs. TEMPERATURE
MAX5407 toc04
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
V
DD
= +5V
V
DD
= +3V
OUTPUT
W
200mV/div
40ns/div
TAP-TO-TAP SWITCHING TRANSIENT
MAX5407 toc05
U/D
2V/div
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
2.5 3.53.0 4.0 4.5 5.0 5.5
STANDBY SUPPLY CURRENT vs.
SUPPLY VOLTAGE
MAX5407 toc06
SUPPLY VOLTAGE (V)
STANDBY SUPPLY CURRENT (µA)