Datasheet AD5227 (Analog Devices) - 9

AD5227 REF LEVEL /DIV MARKER 100 885.289Hz 200 0dB 6.0dB MAG (A/R) –9.060dB 6 TA = 25
°
C 0 VDD = 5.5V VA = 50mV rms 32 STEPS –6 150 16 STEPS –12 8 STEPS –18
μ
A) ( 100 4 STEPS –24 dB I DD 2 STEPS –30 VDD = 5V 1 STEP –36 50 –42 V –48 DD = 3V 0
04419-0-024
10k 100k 1M 10M –54
04419-0-043
1k 10k 100k 1M FREQUENCY (Hz) START 1 000.000Hz STOP 1 000 000.000Hz
Figure 18. Gain vs. Frequency vs. Code, RAB = 50 kΩ Figure 21. IDD vs. CLK Frequency
REF LEVEL /DIV MARKER 52 246.435Hz 1.2 0dB 6.0dB MAG (A/R) –9.139dB A = OPEN 6 T TA = 25
°
C A = 25
°
C 0 VDD = 5.5V 1.0 VA = 50mV rms 32 STEPS –6 (mA) RAB = 10k
Ω
16 STEPS X 0.8 –12 A M _ 8 STEPS –18 WB 0.6 4 STEPS –24 dB TICAL I 2 STEPS –30 RE 0.4 O 1 STEP RAB = 50k
Ω
–36 THE 0.2 –42 RAB = 100k
Ω
–48 0
04419-0-025
0 8 16 24 32 40 48 56 64 –54
04419-0-044
1k 10k 100k 1M CODE (Decimal) START 1 000.000Hz STOP 1 000 000.000Hz
Figure 19. Gain vs. Frequency vs. Code, RAB = 100 kΩ Figure 22. Maximum IWB vs. Code
0 STEP = MIDSCALE, V VB = 0V A = VDD, VB = 0V VA 1 –20 STEP N+1 RR (dB) VW S STEP N P VDD = 3V DC
±
10% p-p AC –40 VDD = 5V 2 VA = 5V VB = 0V VDD = 5V DC
±
10% p-p AC
04419-0-022
–60
04419-0-023
100 1k 10k 100k 1M CH1 2.00V CH2 50.0mV M 400ns A CH2 60.0mV FREQUENCY (Hz) T 0.00000s
Figure 20. PSRR Figure 23. Step Change Settling Time Rev. B | Page 9 of 16 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY ELECTRICAL CHARACTERISTICS INTERFACE TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PROGRAMMING THE DIGITAL POTENTIOMETERS Rheostat Operation Potentiometer Mode Operation DIGITAL INTERFACE TERMINAL VOLTAGE OPERATION RANGE POWER-UP AND POWER-DOWN SEQUENCES LAYOUT AND POWER SUPPLY BIASING APPLICATIONS MANUAL CONTROL WITH TOGGLE AND PUSHBUTTON SWITCHES MANUAL CONTROL WITH ROTARY ENCODER ADJUSTABLE LED DRIVER ADJUSTABLE CURRENT SOURCE FOR LED DRIVER ADJUSTABLE HIGH POWER LED DRIVER AUTOMATIC LCD PANEL BACKLIGHT CONTROL 6-BIT CONTROLLER CONSTANT BIAS WITH SUPPLY TO RETAIN RESISTANCE SETTING OUTLINE DIMENSIONS ORDERING GUIDE