Overview
The AD5378ABCZ is a 32-channel, 14-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is designed to provide high-channel count bipolar voltage output and is suitable for various industrial and control applications. The AD5378 features both parallel and serial input interfaces, making it versatile for different system architectures.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Number of Channels | 32 | - | - |
| Resolution | 14-bit | - | - |
| Output Voltage Range | −8.75 V to +8.75 V | V | VREF(−) = −3.5 V, VREF(+) = +5 V |
| Supply Voltage Range | ±11.4 V to ±16.5 V | V | VSS/VDD |
| Output Amplifier Headroom | 2.5 V (1.5 mA), 2 V (0.5 mA) | V | Load current dependent |
| Serial Interface Clock Speed | Up to 50 MHz | Hz | Compatible with SPI, QSPI, MICROWIRE, DSP |
| Digital Input Current | ±1 μA max | A | No pull-up/pull-down |
| Digital Input Capacitance | 10 pF max | F | - |
| Output Low Voltage | 0.5 V max | V | Sinking 200 μA |
| Output High Voltage | VCC − 0.5 V min | V | Sourcing 200 μA |
Key Features
- Double-buffered parallel interface and 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards.
- Programmable gain and offset adjust register for each channel.
- DAC outputs are gained and buffered on-chip with respect to an external REFGND input.
- Ability to update all outputs simultaneously via the LDAC input.
- DAC outputs can be switched to REFGND via the CLR pin.
- Power-on reset and reset pin for system initialization.
Applications
The AD5378ABCZ is particularly suited for industrial control systems, process control, and other applications requiring multiple bipolar voltage outputs. Its high channel count and programmable gain make it ideal for complex control systems and precision instrumentation.
Q & A
- What is the resolution of the AD5378ABCZ DAC?
The AD5378ABCZ has a resolution of 14 bits. - How many channels does the AD5378ABCZ have?
The AD5378ABCZ has 32 channels. - What is the output voltage range of the AD5378ABCZ?
The output voltage range is −8.75 V to +8.75 V, achieved with reference voltages of VREF(−) = −3.5 V and VREF(+) = +5 V. - What are the supply voltage ranges for the AD5378ABCZ?
The supply voltage ranges are ±11.4 V to ±16.5 V for VSS/VDD. - What is the maximum clock speed for the serial interface?
The serial interface can handle clock speeds up to 50 MHz. - Can the AD5378ABCZ update all outputs simultaneously?
Yes, all outputs can be updated simultaneously by taking the LDAC input low. - What is the purpose of the CLR pin?
The CLR pin allows the DAC outputs to be switched to REFGND. - Is the AD5378ABCZ compatible with any specific serial interface standards?
Yes, it is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. - What is the output amplifier headroom requirement?
The output amplifier headroom requirement is 2.5 V operating with a load current of 1.5 mA, and 2 V operating with a load current of 0.5 mA. - What are some typical applications for the AD5378ABCZ?
Typical applications include industrial control systems, process control, and precision instrumentation.
