Datasheet AD5231 (Analog Devices) - 10

link to page 13 link to page 13
AD5231 Data Sheet 60 2 V f DD = 2.7V, VSS = 0V –3dB = 37kHz, RAB = 10kΩ TA = 25°C 0 50 –2 40 –4 f–3dB = 44kHz, RAB = 100kΩ ) B) –6 d (Ω 30 N ( WR AI –8 f–3dB = 85kHz, RAB = 50kΩ G 20 –10 –12 10 V –14 A = 1mV rms VDD/VSS = ±2.5V D = MIDSCALE 0 –16 0 128 256 384 512 640 768 896 1024
015 012
1k 10k 100k 1M FREQUENCY (Hz) CODE (Decimal)
02739- 02739- Figure 12. Wiper On Resistance vs. Code Figure 15. −3 dB Bandwidth vs. Resistance (Figure 32)
4 0.12 VDD/VSS = ±2.5V VA = 1V rms 0.10 3 IDD @ VDD/VSS = 5V/0V 0.08 %) A) µ 2 ( ( E IS NT 0.06 NO 1 CURRE HD + RAB = 10kΩ I T SS @ VDD/VSS = 5V/0V 0.04 0 50kΩ 0.02 IDD @ VDD/VSS = 2.7V/0V ISS @ VDD/VSS = 2.7V/0V 100kΩ –1 0 –40 –20 0 20 40 60 80 100 0.01 0.1 1 10 100
016 013
FREQUENCY (kHz) TEMPERATURE (°C)
02739- 02739- Figure 13. IDD vs. Temperature, RAB = 10 kΩ Figure 16. Total Harmonic Distortion vs. Frequency
0.25 0 V CODE = 0x200 DD = 5V V –5 SS = 0V 0.20 –10 0x100 –15 0x80 0.15 –20 B) 0x40 FULL-SCALE d (mA) N ( –25 0x20 I DD AI 0.10 G –30 0x10 –35 ZERO-SCALE 0x08 0.05 –40 MIDSCALE –45 0x04 0x02 0x01 0 –50 0 2 4 6 8 10 12 1k 10k 100k 1M 10M
017 014
CLOCK FREQUENCY (MHz) FREQUENCY (Hz)
02739- 02739- Figure 14. IDD vs. Clock Frequency, RAB = 10 kΩ Figure 17. Gain vs. Frequency vs. Code, RAB = 10 kΩ (Figure 32) Rev. D | Page 10 of 28 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Electrical Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions Timing Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Test Circuits Theory of Operation Scratchpad and EEMEM Programming Basic Operation EEMEM Protection Digital Input/Output Configuration Serial Data Interface Daisy-Chain Operation Terminal Voltage Operation Range Power-Up Sequence Latched Digital Outputs Advanced Control Modes Linear Increment and Decrement Instructions Logarithmic Taper Mode Adjustment Using Additional Internal Nonvolatile EEMEM RDAC Structure Programming the Variable Resistor Rheostat Operation Programming the Potentiometer Divider Voltage Output Operation Programming Examples Flash/EEMEM Reliability Applications Bipolar Operation from Dual Supplies High Voltage Operation Bipolar Programmable Gain Amplifier 10-Bit Bipolar DAC 10-Bit Unipolar DAC Programmable Voltage Source with Boosted Output Programmable Current Source Programmable Bidirectional Current Source Resistance Scaling RDAC Circuit Simulation Model Outline Dimensions Ordering Guide