Overview
The AD7948BRS is a high-performance, 12-bit, single-channel, voltage-output digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7943, AD7945, and AD7948 family, which are designed to replace industry-standard DACs like the AD7543, AD7545, and AD7548. The AD7948BRS offers superior speed and power consumption performance, making it suitable for a wide range of industrial and consumer applications.
Key Specifications
| Parameter | Description | Value | Units | Test Conditions |
|---|---|---|---|---|
| Resolution | Number of bits | 12 | Bits | - |
| Integral Nonlinearity (INL) | Maximum deviation from ideal transfer function | ±0.5 LSB | LSB | - |
| Differential Nonlinearity (DNL) | Maximum deviation between two consecutive output levels | ±0.5 LSB | LSB | - |
| Power Consumption | Typical power consumption | 5 µW | µW | - |
| Settling Time | Time to settle to 0.01% of final value with AD843 | 600 ns | ns | - |
| Supply Voltage | Analog and digital supply voltage range | 3 V to 5.5 V | V | - |
| Interface | Type of interface | 8-bit byte interface | - | - |
| Package Options | Available package types | 20-lead DIP, 20-lead SOP, 20-lead SSOP | - | - |
Key Features
- High Precision: The AD7948BRS offers high accuracy with ±0.5 LSB maximum integral and differential nonlinearity.
- Fast Settling Time: It has a fast settling time of 600 ns to 0.01% with the AD843 amplifier.
- Low Power Consumption: Typical power consumption is 5 µW, making it energy-efficient.
- Flexible Supply Voltage: Operates from a single +3.3 V to +5 V supply.
- External Reference: Supports an external reference input for flexibility in design.
- Compact Packages: Available in 20-lead DIP, SOP, and SSOP packages for space-constrained designs.
Applications
- Industrial Process Control: Suitable for precise control and measurement in industrial environments.
- Instrumentation and Measurement: Ideal for applications requiring high accuracy and fast response times.
- Audio and Video Equipment: Used in consumer electronics for high-quality audio and video output.
- Consumer Electronics: Widely used in various consumer devices due to its high performance and low power consumption.
- Medical Devices: Applicable in medical equipment where precision and reliability are critical.
Q & A
- What is the resolution of the AD7948BRS DAC?
The AD7948BRS has a 12-bit resolution.
- What is the typical power consumption of the AD7948BRS?
The typical power consumption is 5 µW.
- What are the available package options for the AD7948BRS?
The AD7948BRS is available in 20-lead DIP, 20-lead SOP, and 20-lead SSOP packages.
- What is the settling time of the AD7948BRS with the AD843 amplifier?
The settling time is 600 ns to 0.01% with the AD843 amplifier.
- What is the supply voltage range for the AD7948BRS?
The supply voltage range is from 3 V to 5.5 V.
- Does the AD7948BRS support an external reference input?
Yes, it supports an external reference input.
- What are the typical applications of the AD7948BRS?
It is used in industrial process control, instrumentation and measurement, audio and video equipment, consumer electronics, and medical devices.
- Is the AD7948BRS still in active production?
No, the AD7948BRS is an obsolete product, but Analog Devices may offer alternative or equivalent models.
- What is the interface type of the AD7948BRS?
The AD7948BRS has an 8-bit byte interface.
- What are the maximum integral and differential nonlinearity values for the AD7948BRS?
The maximum integral and differential nonlinearity values are ±0.5 LSB.
