Overview
The AD5045BRUZ is a dual 14-bit buffered voltage output nanoDAC® digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD5025/AD5045/AD5065 family and is known for its high accuracy and low power consumption. It operates from a single 4.5 V to 5.5 V supply and features a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. The AD5045BRUZ is housed in a 14-lead TSSOP package and is suitable for a wide range of applications requiring precise analog output.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 bits | |
| Supply Voltage (Digital/Analog) | 4.5 V to 5.5 V | V |
| Operating Temperature | -40°C to 125°C | °C |
| Settling Time | 13 µs | µs |
| Integral Nonlinearity (INL) | ±0.1 LSB | LSB |
| Differential Nonlinearity (DNL) | ±0.2 LSB | LSB |
| Total Unadjusted Error | <2.5 mV | mV |
| Power Consumption (Power-Down) | Typically 400 nA at 5 V | nA |
| Package Type | 14-TSSOP (0.173", 4.40mm Width) | |
| Mounting Type | Surface Mount | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Data Interface | SPI, DSP | |
| Reference Type | External |
Key Features
- High Accuracy: Relative accuracy specifications of ±1 LSB INL and differential accuracy of ±1 LSB.
- Low Power Consumption: Operates from a single 4.5 V to 5.5 V supply with low power consumption, especially in power-down mode (typically 400 nA at 5 V).
- Versatile Interface: 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating at clock rates up to 50 MHz.
- Power-On Reset and Power-Down: Ensures DAC output powers up to zero scale or midscale and features software selectable output loads in power-down mode.
- Simultaneous Update and Clear Function: Outputs of all DACs can be updated simultaneously using the LDAC function, and an asynchronous CLR function clears all DACs to a software-selectable code.
- External Reference: Reference supplied from an external pin with an on-chip reference buffer.
Applications
- Process Controls: Suitable for precise control in industrial processes.
- Data Acquisition Systems: Used in systems requiring accurate analog output.
- Portable Battery-Powered Instruments: Ideal due to its low power consumption.
- Digital Gain and Offset Adjustment: Useful in applications requiring adjustable gain and offset.
- Programmable Voltage and Current Sources: Can be used to create programmable sources.
- Programmable Attenuators: Suitable for applications needing adjustable attenuation.
Q & A
- What is the resolution of the AD5045BRUZ DAC?
The AD5045BRUZ has a resolution of 14 bits.
- What is the operating voltage range of the AD5045BRUZ?
The device operates from a single 4.5 V to 5.5 V supply.
- What is the operating temperature range of the AD5045BRUZ?
The operating temperature range is -40°C to 125°C.
- What is the settling time of the AD5045BRUZ?
The settling time is 13 µs.
- What are the INL and DNL specifications of the AD5045BRUZ?
The INL is ±0.1 LSB, and the DNL is ±0.2 LSB.
- How much power does the AD5045BRUZ consume in power-down mode?
In power-down mode, the device consumes typically 400 nA at 5 V.
- What type of package does the AD5045BRUZ come in?
The device is housed in a 14-lead TSSOP package.
- What is the data interface of the AD5045BRUZ?
The device uses a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards.
- Does the AD5045BRUZ have a power-on reset feature?
Yes, the device has a power-on reset circuit that ensures the DAC output powers up to zero scale or midscale.
- Can the outputs of the AD5045BRUZ be updated simultaneously?
Yes, the outputs of all DACs can be updated simultaneously using the LDAC function.
