EVAL-AD7780EBZ Analog Devices Inc, EVAL-AD7780EBZ Datasheet
EVAL-AD7780EBZ
Specifications of EVAL-AD7780EBZ
Related parts for EVAL-AD7780EBZ
EVAL-AD7780EBZ Summary of contents
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FEATURES Pin-programmable filter response Update rate 16.7 Hz Pin-programmable in-amp gain Pin-programmable power-down and reset Status function Internal clock oscillator Internal bridge power-down switch Current 115 μA typical (gain = 1) 330 μA typical (gain = 128) ...
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AD7780 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Timing Characteristics ................................................................ 5 Absolute Maximum Ratings ............................................................ 6 Thermal Resistance ...................................................................... 6 ESD ...
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SPECIFICATIONS REF DD Table 2. Parameter ADC CHANNEL Output Update Rate (f ) ADC 2 No Missing Codes Resolution Peak-to-Peak RMS Noise Integral Nonlinearity Offset Error Offset ...
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AD7780 Parameter LOGIC INPUTS 2 SCLK, FILTER, GAIN, PDRST Input Low Voltage, V INL Input High Voltage, V INH SCLK (Schmitt-Triggered Input) Hysteresis Input Currents Input Capacitance LOGIC OUTPUT (DOUT/RDY) 2 Output High Voltage Output Low Voltage, ...
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TIMING CHARACTERISTICS 5.25 V, GND = 0 V, Input Logic Input Logic Table 3. 1 Parameter Limit at T ...
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AD7780 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 4. Parameter AV to GND GND DD Analog Input Voltage to GND Reference Input Voltage to GND Digital Input Voltage to GND Digital Output Voltage ...
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PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS SCLK 1 DOUT/RDY 2 AD7780 NC 3 GAIN TOP VIEW 4 (Not to Scale) AIN(+) 5 AIN(–) 6 REFIN(+) CONNECT Figure 6. SOIC Pin Configuration Table 6. Pin Function Descriptions Pin ...
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AD7780 TYPICAL PERFORMANCE CHARACTERISTICS 8,388,670 8,388,660 8,388,650 8,388,640 8,388,630 8,388,620 8,388,610 8,388,600 8,388,590 8,388,580 8,388,570 0 200 400 600 SAMPLE Figure 8. Noise ( Update Rate = 16.7 Hz, Gain = 128) REF ...
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SAMPLE Figure 14. Noise ( Update Rate = 10 Hz, Gain = 1) REF DD 100 8,388,385 8,388,391 8,388,397 8,388,403 8,388,409 ...
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AD7780 OUTPUT NOISE AND RESOLUTION Table 7 and Table 8 show the rms noise of the AD7780 for the two output data rates and gain settings when 3 V and 5 V references are used. These numbers are typical and ...
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... These functions are controlled using dedicated pins, which makes the interface easy to configure. A 2-wire interface simplifies data retrieval from the AD7780. FILTER, DATA RATE, AND SETTLING TIME The AD7780 has two filter options. When the FILTER pin is low, the 16.7 Hz filter is selected ...
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AD7780 GAIN The AD7780 has two gain options: gain = 1 and gain = 128. When the GAIN pin is low, the gain is set to 128; when the GAIN pin is high, the gain is set to 1. The ...
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BRIDGE POWER-DOWN SWITCH The bridge power-down switch (BPDSW) is useful in battery- powered applications where the optimization of system power consumption is essential. A 350 Ω load cell typically consumes 15 mA when excited with power supply. ...
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AD7780 APPLICATIONS INFORMATION The AD7780 provides a low cost, high resolution analog-to-digital function. Because the analog-to-digital function is provided by a Σ-Δ architecture, the parts are more immune to noisy environ- ments, making them ideal for use in sensor measurement ...
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GROUNDING AND LAYOUT Because the analog input and reference input of the ADC are differential, most of the voltages in the analog modulator are common-mode voltages. The excellent common-mode reject- tion of the part removes common-mode noise on these inputs. ...
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AD7780 OUTLINE DIMENSIONS 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 0.15 0.05 ORDERING GUIDE Model Temperature Range 1 AD7780BRZ –40°C to +105°C 1 AD7780BRZ-REEL –40°C to +105°C 1 AD7780BRUZ –40°C to +105°C AD7780BRUZ-REEL 1 –40°C to +105°C ...