Datasheet
Table Of Contents
- Features
- Applications
- Functional Block Diagram
- General Description
- Specifications
- Absolute Maximum Ratings
- Pin Configuration and Function Descriptions
- Typical Performance Characteristics
- Test Circuits
- Theory of Operation
- Serial Data Interface
- Shift Register
- RDAC Register
- 20-TP Memory
- Write Protection
- Basic Operation
- 20-TP Readback and Spare Memory Status
- Shutdown Mode
- Resistor Performance Mode
- Reset
- SDO Pin and Daisy-Chain Operation
- RDAC Architecture
- Programming the Variable Resistor
- Programming the Potentiometer Divider
- EXT_CAP Capacitor
- Terminal Voltage Operating Range
- Applications Information
- Outline Dimensions
Data Sheet AD5291/AD5292
APPLICATIONS INFORMATION
analog.com Rev. G | 31 of 33
In Figure 75, the lower trace shows that the volume level changes
from a quarter-scale to full-scale when a signal change occurs near
the zero-crossing window.
07674-157
R
1
100kΩ
±0.1%
R
2
806Ω
±0.1%
V
CC
+3.3V
V
IN
V+
V–
AD8541
+3.3V
U2
U1A
R
3
100kΩ
±0.1%
R
7
33.2kΩ
±0.1%
R
6
27.4kΩ
±0.1%
R
4
90.9kΩ ±0.1%
0V ±14V
R
5
9.09kΩ ±0.1%
C1
100nF
V
DD
+15V
V
SS
–15V
AD5292
R
AB
20kΩ
A
B
W
U6
U1B
2/2
V
CC
GND
V
CC
GND
ADCMP371
ADCMP371
+3.3V
+3.3V
+3.3V
U4
U3
V
OUT
U4B
U5A
7408
7408
SYNC
SYNC
AD8676
V+
+15V
V–
–15V
100kΩ
+1.645V
±1.4V
+1.81V
+1.657V
0.0133V
+1.643V
SERIAL
INTERFACE
AD8676
1/2
2/2
1/2
Figure 74. Audio Volume Control with Zipper Noise Reduction
07674-158
CH1 500mV
B
W
CH2 500mV
B
W
M20µs A CH2 210mV
T 50.0%
1
2
T
CHANNEL 1
FREQ = 20.25kHz
1.03V p-p
Figure 75. Zipper Noise Detector