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Specifications
SKU: 7489077
24 Bit Analog to Digital Converter 3, 5 Input 1 Sigma-Delta 24-PDIP
| Parameter | Description | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | Operating supply voltage | 2.7 | - | 5.25 | V |
| Supply Current (IDD) | Supply current at 3 V, all channels powered down | - | 200 | - | μA |
| Supply Current (IDD) | Supply current at 3 V, all channels active | - | 800 | - | μA |
| Input Voltage Range | Differential input voltage range | - | - | VREF | V |
| Common-Mode Input Voltage Range | Common-mode input voltage range | VSS - 0.3 | - | VDD + 0.3 | V |
| Input Bias Current | Maximum input bias current | - | 10 | - | nA |
| Input Resistance | Input resistance | - | 100 | - | MΩ |
| Output Data Rate | Configurable output data rate | 0.5 | - | 1600 | Hz |
| Resolution | Effective resolution | - | 16 | - | bits |
| Signal-to-Noise Ratio (SNR) | Signal-to-noise ratio at 4.7 Hz output data rate | - | 94 | - | dB |
| Total Harmonic Distortion (THD) | Total harmonic distortion at 4.7 Hz output data rate | - | -100 | - | dB |
| Power-Down Mode | Power-down mode current | - | 2 | - | μA |
| Operating Temperature Range | Temperature range for operation | -40 | - | 85 | °C |
| Storage Temperature Range | Temperature range for storage | -65 | - | 150 | °C |
Instructions for Using the AD7714YNZ
Power Supply:
- Connect the VDD pin to a power supply between 2.7 V and 5.25 V.
- Connect the VSS pin to ground.
Reference Voltage:
- The reference voltage (VREF) can be connected to an external reference or generated internally. Ensure that the input voltage range is within the limits of the reference voltage.
Input Configuration:
- Connect the differential input signals to the appropriate input pins (AIN1, AIN2, etc.). Ensure that the common-mode input voltage is within the specified range.
Output Data Rate:
- Configure the output data rate using the control registers. The AD7714 supports data rates from 0.5 Hz to 1600 Hz.
Power-Down Mode:
- To reduce power consumption, use the power-down mode by setting the appropriate bit in the control register. The device will draw minimal current in this mode.
Reading Data:
- Use the SPI interface to read data from the AD7714. Ensure that the communication protocol is correctly implemented to avoid errors.
Calibration:
- Perform system calibration if necessary to ensure accurate measurements. This can be done using the internal calibration registers.
Temperature Considerations:
- Operate the device within the specified temperature range to ensure reliable performance. Store the device within the storage temperature range to prevent damage.
Handling:
- Handle the device with care to avoid electrostatic discharge (ESD) damage. Use proper ESD protection measures during handling and assembly.
Layout and PCB Design:
- Follow good PCB layout practices to minimize noise and interference. Keep signal traces short and use ground planes to shield sensitive analog signals.
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