EVAL-AD7691SDZ Analog Devices, EVAL-AD7691SDZ Datasheet
EVAL-AD7691SDZ
Specifications of EVAL-AD7691SDZ
Related parts for EVAL-AD7691SDZ
EVAL-AD7691SDZ Summary of contents
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... Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. ...
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... CS Mode, 3-Wire with Busy Indicator .................................... 19 CS Mode, 4-Wire Without Busy Indicator ............................. 20 CS Mode, 4-Wire with Busy Indicator .................................... 21 Chain Mode Without Busy Indicator ...................................... 22 Chain Mode with Busy Indicator ............................................. 23 Application Hints ........................................................................... 24 Layout .......................................................................................... 24 Evaluating the AD7691 Performance ...................................... 24 Outline Dimensions ....................................................................... 25 Ordering Guide .......................................................................... 25 Rev Page Data Sheet ...
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Data Sheet SPECIFICATIONS VDD = 2 5.25 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 ...
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... MIN 1 Conversion results are available immediately after completed conversion. 2 With all digital inputs forced to VIO or GND as required. 3 During acquisition phase. 4 Contact an Analog Devices, Inc., sales representative for the extended temperature range. = VDD, all specifications T REF MIN Min 0.5 −0.3 0.7 × VIO −1 − ...
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Data Sheet TIMING SPECIFICATIONS VDD = 4 5.25 V, VIO = 2 VDD, V Table 4. Parameter Conversion Time: CNV Rising Edge to Data Available Acquisition Time Time Between Conversions CNV Pulse Width (CS Mode) SCK ...
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AD7691 VDD = 2 4.5 V, VIO = 2 VDD, V Table 5. Parameter Conversion Time: CNV Rising Edge to Data Available Acquisition Time Time Between Conversions CNV Pulse Width (CS Mode) SCK Period (CS Mode) ...
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Data Sheet ABSOLUTE MAXIMUM RATINGS Table 6. Parameter Rating 1 Analog Inputs (IN+, IN−) GND − 0 VDD + 0 ±130 mA REF GND − 0 VDD + 0.3 V Supply Voltages VDD, VIO ...
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AD7691 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS REF 1 10 VDD 2 9 AD7691 IN TOP VIEW (Not to Scale) IN– GND 5 6 Figure 5. 10-Lead MSOP Pin Configuration Table 8. Pin Function Descriptions 1 Pin ...
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Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 1.5 POSITIVE INL = 0.39LSB NEGATIVE INL = –0.73LSB 1.0 0.5 0 –0.5 –1.0 –1.5 0 65536 131072 CODE Figure 7. Integral Nonlinearity vs. Code 2.5 V 80k 69769 70k 60k 50k 40k 28527 27770 ...
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AD7691 104 102 100 2.3 2.6 2.9 3.2 3.5 3.8 4.1 REFERENCE VOLTAGE (V) Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage 105 REF 100 V = 2.5V REF ...
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Data Sheet 105 SNR 5V 102 SNR 2. THD THD 2. –10 –8 –6 –4 INPUT LEVEL (dB) Figure 19. SNR, THD vs. Input Level 1000 VDD = 5V 750 VDD = ...
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AD7691 100 FREQUENCY (kHz) Figure 25. PSSR vs. Frequency 1000 10000 Rev Page Data Sheet ...
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Data Sheet TERMINOLOGY Least Significant Bit (LSB) The least significant bit, or LSB, is the smallest increment that can be represented by a converter. For an analog-to-digital converter with N bits of resolution, the LSB expressed in volts is V ...
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AD7691 THEORY OF OPERATION IN+ REF GND IN– CIRCUIT INFORMATION The AD7691 is a fast, low power, single-supply, precise, 18-bit ADC using a successive approximation architecture. The part is capable of converting 250,000 samples per second (250 kSPS) and powers ...
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Data Sheet TYPICAL CONNECTION DIAGRAM Figure 29 shows an example of the recommended connection diagram for the AD7691 when multiple supplies are available REF 3 ADA4841-2 V– REF 3 ADA4841-2 V– ...
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AD7691 DRIVER AMPLIFIER CHOICE Although the AD7691 is easy to drive, the driver amplifier must meet the following requirements: The noise generated by the driver amplifier needs to be kept as low as possible to preserve the SNR and transition ...
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Data Sheet POWER SUPPLY The AD7691 uses two power supply pins: a core supply (VDD) and a digital input/output interface supply (VIO). VIO allows direct interface with any logic between 1.8 V and VDD. To reduce the supplies needed, the ...
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AD7691 CS MODE, 3-WIRE WITHOUT BUSY INDICATOR This mode is usually used when a single AD7691 is connected to an SPI-compatible digital host. The connection diagram is shown in Figure 35, and the corresponding timing is given in Figure 36. ...
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Data Sheet CS MODE, 3-WIRE WITH BUSY INDICATOR This mode is usually used when a single AD7691 is connected to an SPI-compatible digital host having an interrupt input. The connection diagram is shown in Figure 37, and the corresponding timing ...
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AD7691 CS MODE, 4-WIRE WITHOUT BUSY INDICATOR This mode is usually used when multiple AD7691s are connected to an SPI-compatible digital host. A connection diagram example using two AD7691s is shown in Figure 39, and the corresponding timing is given ...
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Data Sheet CS MODE, 4-WIRE WITH BUSY INDICATOR This mode is normally used when a single AD7691 is connected to an SPI-compatible digital host with an interrupt input, and it is desired to keep CNV, which is used to sample ...
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AD7691 CHAIN MODE WITHOUT BUSY INDICATOR This mode can be used to daisy-chain multiple AD7691s 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 ...
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Data Sheet CHAIN MODE WITH BUSY INDICATOR This mode can also be used to daisy-chain multiple AD7691s on a 3-wire serial interface while providing a busy indicator. This feature is useful for reducing component count and wiring connections, for example, ...
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... Figure 48. EVALUATING THE AD7691 PERFORMANCE Other recommended layouts for the AD7691 are outlined in the documentation of the evaluation board for the AD7691 (EVAL-AD7691CBZ). 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 BRD3Z ...
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... IDENTIFIER PIN 1 INDEX AREA 0.80 0.75 0.70 SEATING PLANE ORDERING GUIDE 1 Model Temperature Range AD7691BCPZRL –40°C to +85°C AD7691BCPZRL7 –40°C to +85°C AD7691BRMZ –40°C to +85°C AD7691BRMZ-RL7 –40°C to +85°C EVAL-AD7691SDZ EVAL-SDP-CB1Z RoHS Compliant Part. 3.10 3.00 2.90 5. 3.10 4.90 3.00 4.65 1 2.90 5 PIN 1 0.50 BSC 0.95 15° ...
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AD7691 NOTES Rev Page Data Sheet ...
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Data Sheet NOTES Rev Page AD7691 ...
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... AD7691 NOTES ©2006–2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06146-0-3/12(C) Rev Page Data Sheet ...