Overview
The AD7302BNZ from Analog Devices is a high-performance, dual 8-bit digital-to-analog converter (DAC) designed for precision applications. It operates from a single supply voltage ranging from 2.7 V to 5.5 V and features on-chip precision output buffers that allow the DAC outputs to swing rail to rail. The device is equipped with a parallel microprocessor and DSP-compatible interface, high-speed registers, and double-buffered interface logic. This DAC is suitable for a wide range of industrial and commercial uses due to its 8-bit resolution and compact 20-pin package options, including PDIP, SOIC, and TSSOP.
Key Specifications
| Parameter | Value | Units | Conditions/Comments |
|---|---|---|---|
| Resolution | 8 Bits | ||
| Supply Voltage | 2.7 V to 5.5 V | ||
| Relative Accuracy | ±1 LSB max | ||
| Differential Nonlinearity | ±1 LSB max | Guaranteed Monotonic | |
| Full-Scale Error | -0.75 LSB typ | ||
| Zero Code Error @ 25°C | 3 LSB typ | All Zeroes Loaded to DAC Register | |
| Gain Error | ±1 % FSR typ | ||
| Zero Code Temperature Coefficient | 100 µV/°C typ | ||
| REFIN Input Range | 1.0 to VDD/2 V | min to max | |
| REFIN Input Impedance | 10 MΩ typ | ||
| Settling Time | Typically 1.2 µs | ||
| Power Consumption @ 3.3 V | Less than 10 mW | ||
| Power Consumption in Power-Down Mode | Less than 1 µA @ 25°C | ||
| Package Options | 20-pin PDIP, 20-lead SOIC, 20-lead TSSOP |
Key Features
- Wide Operating Voltage Range: The device operates effectively across a broad range of input voltages from 2.7 V to 5.5 V.
- Low Noise Operation: It provides low noise levels, which is crucial for applications requiring high signal purity.
- Compact Design: Available in 20-pin PDIP, SOIC, and TSSOP packages, making it space-efficient and suitable for various form factors.
- Parallel Interface: Features a parallel microprocessor and DSP-compatible interface with high-speed registers and double-buffered interface logic.
- Internal or External Reference Capability: Reference selection can be either an internal reference derived from the VDD or an external reference applied at the REFIN pin.
- Low Power Consumption: Ideal for portable battery-operated equipment with power consumption less than 10 mW at 3.3 V and reducing to 3 µW in power-down mode.
- Fast Response Time: The on-chip output buffer amplifiers allow the outputs of the DACs to swing rail to rail with a settling time of typically 1.2 µs.
- Power-Down Capability: The device can be put into a low power mode, reducing current consumption to less than 1 µA at 25°C.
Applications
- Industrial Control Systems: Suitable for applications requiring precise voltage outputs in industrial control environments.
- Instrumentation: Used in various instrumentation applications where accurate and reliable measurements are necessary.
- Data Acquisition Systems: Ideal for data acquisition systems that require high precision and low noise operation.
- Portable Battery Powered Instruments: Low power consumption makes it suitable for portable battery-operated equipment.
- Programmable Voltage and Current Sources: Can be used in applications requiring programmable voltage and current sources.
- Programmable Attenuators: Suitable for applications involving programmable attenuators.
Q & A
- What is the resolution of the AD7302BNZ?
The AD7302BNZ has an 8-bit resolution.
- What is the operating voltage range of the AD7302BNZ?
The device operates from a single supply voltage ranging from 2.7 V to 5.5 V.
- What types of packages are available for the AD7302BNZ?
The AD7302BNZ is available in 20-pin PDIP, 20-lead SOIC, and 20-lead TSSOP packages.
- What is the settling time of the AD7302BNZ?
The settling time is typically 1.2 µs.
- How much power does the AD7302BNZ consume at 3.3 V?
The power consumption is less than 10 mW at 3.3 V.
- What is the power consumption in power-down mode?
In power-down mode, the device consumes less than 1 µA at 25°C.
- Can the AD7302BNZ use an external reference?
Yes, the AD7302BNZ can use either an internal reference derived from the VDD or an external reference applied at the REFIN pin.
- What are some common applications of the AD7302BNZ?
Common applications include industrial control systems, instrumentation, data acquisition systems, and portable battery-powered instruments.
- Is the AD7302BNZ RoHS compliant?
Yes, the AD7302BNZ is RoHS compliant.
- What is the warranty period for the AD7302BNZ from Ovaga?
Ovaga offers a 1-year warranty on the AD7302BNZ.
