AD7680BRM Analog Devices Inc, AD7680BRM Datasheet
AD7680BRM
Specifications of AD7680BRM
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AD7680BRM Summary of contents
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FEATURES Fast throughput rate: 100 kSPS Specified for Low power 3 mW typ at 100 kSPS with 2.5 V supply 3.9 mW typ at 100 kSPS with 3 V supply 16.7 mW ...
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AD7680 TABLE OF CONTENTS Specifications..................................................................................... 3 Timing Specifications....................................................................... 6 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configurations and Function Descriptions ........................... 8 Terminology ...................................................................................... 9 Typical Performance Characteristics ........................................... 10 Circuit Information ........................................................................ 12 Converter Operation.................................................................. 12 Analog Input ...
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SPECIFICATIONS Table 4 5 2.5 MHz SCLK Parameter DYNAMIC PERFORMANCE 2 Signal-to-Noise + Distortion (SINAD) 2 Signal-to-Noise Ratio (SNR) 2 Total Harmonic Distortion (THD) Peak Harmonic or Spurious Noise ...
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AD7680 1 SPECIFICATIONS Table 2 4.096 2.5 MHz SCLK Parameter DYNAMIC PERFORMANCE 2 Signal-to-Noise + Distortion (SINAD) 2 Signal-to-Noise Ratio (SNR) 2 Total Harmonic Distortion (THD) Peak Harmonic or Spurious ...
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Parameter POWER REQUIREMENTS Normal Mode (Static) Normal Mode (Operational) Full Power-Down Mode 4 Power Dissipation Normal Mode (Operational) Full Power-Down 1 Temperature range as follows Versions: −40°C to +85°C. 2 See the Terminology section. ...
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AD7680 TIMING SPECIFICATIONS Table 2 5 MIN Limit MIN MAX Parameter 250 250 SCLK 2.5 2 × ...
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ABSOLUTE MAXIMUM RATINGS Table 25°C, unless otherwise noted. A Parameter V to GND DD Analog Input Voltage to GND Digital Input Voltage to GND Digital Output Voltage to GND Input Current to Any Pin Except Supplies Operating ...
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AD7680 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS SOT- AD7680 GND SDATA 2 5 TOP VIEW V SCLK (Not to Scale) Figure 3. SOT-23 Pin Configuration Table 6. Pin Function Descriptions Pin No. Pin ...
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TERMINOLOGY Integral Nonlinearity This is the maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The endpoints of the transfer function are zero scale, a point 1/2 LSB below the first code transition, and ...
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AD7680 TYPICAL PERFORMANCE CHARACTERISTICS Figure 5 shows a typical FFT plot for the AD7680 at 100 kSPS sample rate and 10 kHz input frequency. Figure 6 shows the signal-to-(noise + distortion) ratio performance versus the input frequency for various supply ...
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V = 3.0V DD ° TEMP = 25 C 2.0 1.5 1.0 0.5 0 –0.5 –1.0 0 10000 20000 30000 40000 50000 CODE Figure 9. AD7680 Typical INL 1 3.0V DD TEMP = 25 1.0 0.5 0 ...
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AD7680 CIRCUIT INFORMATION The AD7680 is a fast, low power, 16-bit, single-supply ADC. The part can be operated from a 2 5.5 V supply and is capable of throughput rates of 100 kSPS when provided with a 2.5 ...
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ADC TRANSFER FUNCTION The output coding of the AD7680 is straight binary. The designed code transitions occur at successive integer LSB values, i.e., 1 LSB, 2 LSBs. The LSB size is V /65536. The ideal transfer DD characteristic for the ...
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AD7680 MODES OF OPERATION The mode of operation of the AD7680 is selected by controlling the (logic) state of the CS signal during a conversion. There are two possible modes of operation, normal and power-down. The point at which CS ...
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POWER-DOWN MODE This mode is intended for use in applications where slower throughput rates are required. Either the ADC is powered down between each conversion series of conversions may be performed at a high throughput rate, and then ...
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AD7680 POWER VS. THROUGHPUT RATE By using the power-down mode on the AD7680 when not converting, the average power consumption of the ADC decreases at lower throughput rates. Figure 19 shows how as the throughput rate is reduced, the part ...
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SERIAL INTERFACE Figure 20 shows the detailed timing diagram for serial interfacing to the AD7680. The serial clock provides the conversion clock and also controls the transfer of information from the AD7680 during conversion. The CS signal initiates the data ...
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AD7680 It is also possible to take valid data on each SCLK rising edge rather than falling edge, since the SCLK cycle time is long enough to ensure the data is ready on the rising edge of SCLK. However, the ...
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APPLICATION HINTS GROUNDING AND LAYOUT The printed circuit board that houses the AD7680 should be designed such that the analog and digital sections are separated and confined to certain areas of the board. This facilitates the use of ground planes ...
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... AD7680BRM −40°C to +85°C AD7680BRM-REEL −40°C to +85°C AD7680BRM-REEL7 −40°C to +85°C 1 Linearity error here refers to no missing codes. © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. ...