Datasheet AD7790 (Analog Devices) - 10

Data Sheet AD7790 TYPICAL PERFORMANCE CHARACTERISTICS 0 3.0 VDD = 5V –10 UPDATE RATE = 16.6Hz TA = 25°C –20 2.5 –30 –40 2.0
µ
V) –50 –60 dB 1.5 –70 –80 RMS NOISE ( 1.0 –90 –100 0.5 –110 –120 0 0 20 40 60 80 100 120 140 160 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 FREQUENCY (Hz) VREF (V)
03538-0-007 03538-0-013 Figure 6. Frequency Response for a 16.6 Hz Update Rate Figure 7. RMS Noise vs. Reference Voltage Rev. A | Page 9 of 20 Document Outline AD7790—Specifications Timing Characteristics Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics On-Chip Registers Communications Register (RS1, RS0 = 0, 0) Status Register (RS1, RS0 = 0, 0; Power-on/Reset = 0x88) Mode Register (RS1, RS0 = 0, 1; Power-on/Reset = 0x02) Filter Register (RS1, RS0 = 1, 0; Power-on/Reset = 0x04) Data Register (RS1, RS0 = 1, 1; Power-on/Reset = 0x0000) ADC Circuit Information Overview Noise Performance Reduced Current Modes Digital Interface Single Conversion Mode Continuous Conversion Mode Continuous Read Mode Circuit Description Analog Input Channel Programmable Gain Amplifier Bipolar Configuration Data Output Coding Reference Input VDD Monitor Grounding and Layout Outline Dimensions Ordering Guide