EVAL-AD7693CB Analog Devices Inc, EVAL-AD7693CB Datasheet
EVAL-AD7693CB
Specifications of EVAL-AD7693CB
Related parts for EVAL-AD7693CB
EVAL-AD7693CB Summary of contents
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FEATURES 16-bit resolution with no missing codes Throughput: 500 kSPS INL/DNL: ±0.25 LSB typ, ±0.5 LSB max (±8 ppm of FSR) Dynamic range: 96.5 dB SINAD kHz THD: −120 kHz True differential analog ...
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... CS Mode, 3-Wire Without Busy Indicator ............................. 17 CS Mode, 3-Wire with Busy Indicator .................................... 18 CS Mode, 4-Wire Without Busy Indicator ............................. 19 CS Mode, 4-Wire with Busy Indicator .................................... 20 Chain Mode Without Busy Indicator ...................................... 21 Chain Mode with Busy Indicator............................................. 22 Application Hints ........................................................................... 23 Layout .......................................................................................... 23 Evaluating AD7693 Performance............................................. 23 Outline Dimensions ....................................................................... 24 Ordering Guide .......................................................................... 24 Rev Page ...
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SPECIFICATIONS VDD = 4 5.5 V, VIO = 2 VDD, V Table 2. Parameter RESOLUTION ANALOG INPUT Voltage Range Absolute Input Voltage Common-Mode Input Range Analog Input CMRR Leakage Current at 25°C Input Impedance 1 THROUGHPUT ...
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AD7693 VDD = 4 5.5 V, VIO = 2 VDD, V Table 3. Parameter REFERENCE Voltage Range Load Current SAMPLING DYNAMICS −3 dB Input Bandwidth Aperture Delay DIGITAL INPUTS Logic Levels ...
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TIMING SPECIFICATIONS VDD = 4 5.5 V, VIO = 2 VDD Table 4. Parameter Conversion Time: CNV Rising Edge to Data Available Acquisition Time Time Between Conversions CNV Pulse Width (CS Mode) SCK Period ...
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AD7693 ABSOLUTE MAXIMUM RATINGS Table 5. Parameter Rating Analog Inputs 1 1 IN+, IN− GND − 0 VDD + 0 ±130 mA REF GND − 0 VDD + 0.3 V Supply Voltages VDD, VIO ...
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PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS REF 1 10 VDD 2 9 AD7693 IN TOP VIEW (Not to Scale) IN– GND 5 6 Figure 5. 10-Lead MSOP Pin Configuration Table 6. Pin Function Descriptions Pin No. Mnemonic ...
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AD7693 TERMINOLOGY Least Significant Bit (LSB) The LSB is the smallest increment that can be represented by a converter. For a differential analog-to-digital converter with N bits of resolution, the LSB expressed in volts (V) = REF ...
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TYPICAL PERFORMANCE CHARACTERISTICS VDD = 4 5.5 V, VIO = 2 VDD, V 1.0 POSITIVE INL = +0.17LSB NEGATIVE INL = –0.17LSB 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 16384 32768 CODE ...
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AD7693 100 SNR, SINAD ENOB 91 90 2.0 2.5 3.0 3.5 4.0 REFERENCE VOLTAGE (V) Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage 100 SNR, SINAD 96 95 ...
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S 800 VDD 600 400 200 VIO 0 4.50 4.75 5.00 5.25 SUPPLY (V) Figure 19. Operating Currents vs. Supply 1000 f = 100kSPS S VDD 800 600 400 200 VIO 0 –55 –35 –15 –5 ...
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AD7693 THEORY OF OPERATION IN+ 32,768C REF GND 32,768C IN– CIRCUIT INFORMATION The AD7693 is a fast, low power, single-supply, precise, 16-bit ADC using a successive approximation architecture. The AD7693 is capable of converting 500,000 samples per second (500 kSPS) ...
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Transfer Functions The ideal transfer characteristic for the AD7693 is shown in Figure 26 and Table 7. 011...111 011...110 011...101 100...010 100...001 100...000 –FSR –FSR + 1LSB –FSR + 0.5LSB +FSR – 1.5LSB ANALOG INPUT Figure 26. ADC Ideal Transfer ...
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AD7693 ANALOG INPUTS Figure 28 shows an equivalent circuit of the input structure of the AD7693. The two diodes, D1 and D2, provide ESD protection for the analog inputs, IN+ and IN−. Care must be taken to ensure that the ...
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Table 8. Recommended Driver Amplifiers Amplifier Typical Application ADA4941-1 Very low noise, low power single to differential ADA4841-x Very low noise, small, and low power AD8655 5 V single supply, low noise AD8021 Very low noise and high frequency AD8022 ...
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AD7693 SUPPLYING THE ADC FROM THE REFERENCE For simplified applications, the AD7693, with its low operating current, can be supplied directly using the reference circuit shown in Figure 33. The reference line can be driven by • The system power ...
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CS MODE, 3-WIRE WITHOUT BUSY INDICATOR This mode is usually used when a single AD7693 is connected to an SPI-compatible digital host. The connection diagram is shown in Figure 34, and the corresponding timing is given in Figure 35. With ...
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AD7693 CS MODE, 3-WIRE WITH BUSY INDICATOR This mode is usually used when a single AD7693 is connected to an SPI-compatible digital host having an interrupt input. The connection diagram is shown in Figure 36, and the corresponding timing is ...
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CS MODE, 4-WIRE WITHOUT BUSY INDICATOR This mode is usually used when multiple AD7693s are connected to an SPI-compatible digital host. A connection diagram example using two AD7693s is shown in Figure 38, and the corresponding timing is given in ...
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AD7693 CS MODE, 4-WIRE WITH BUSY INDICATOR This mode is usually used when a single AD7693 is connected to an SPI-compatible digital host with an interrupt input and it is desired to keep CNV, which is used to sample the ...
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CHAIN MODE WITHOUT BUSY INDICATOR This mode can be used to daisy-chain multiple AD7693s on a 3-wire serial interface. This feature is useful for reducing component count and wiring connections, for example, in isolated multiconverter applications or for systems with ...
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AD7693 CHAIN MODE WITH BUSY INDICATOR This mode can also be used to daisy-chain multiple AD7693s on a 3-wire serial interface while providing a busy indicator. This feature is useful for reducing component count and wiring connections, for example, in ...
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... EVALUATING AD7693 PERFORMANCE Other recommended layouts for the AD7693 are outlined in the documentation of the evaluation board for the AD7693 (EVAL-AD7693CB). The evaluation board package includes a fully assembled and tested evaluation board, documentation, and software for controlling the board from a PC via the EVAL-CONTROL BRD3 ...
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... AD7693BCPZRL 1 −40°C to +85°C 1 AD7693BRMZ −40°C to +85°C 1 AD7693BRMZRL7 −40°C to +85°C 2 EVAL-AD7693CB 3 EVAL-CONTROL BRD2 3 EVAL-CONTROL BRD3 Pb-free part. 2 This board can be used as a standalone evaluation board or in conjunction with the EVAL-CONTROL BRDx for evaluation/demonstration purposes. 3 These boards allow control and communicate with all Analog Devices evaluation boards ending in the CB designators. ...