Overview
The AD7943BRZ is a 12-bit multiplying Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component operates from a single +3.3 V to +5 V supply and is designed to offer high performance and low power consumption. It features a serial interface, making it suitable for a variety of applications requiring precise analog output from digital signals.
Key Specifications
| Parameter | Value | Units | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 12 bits | ||
| Supply Voltage Range | 3.0 to 5.5 V | V | Normal and Biased Modes |
| Power Consumption (Typical) | 5 µA | µA | No STB signal, SRO open circuit |
| Integral Nonlinearity (INL) | 0.5 LSB | LSB | |
| Differential Nonlinearity (DNL) | 0.5 LSB | LSB | |
| Output High Voltage (VOH) | VDD – 0.2 V | V | Minimum |
| Strobe Pulsewidth (tSTB) | 40 ns (min) | ns | |
| Data Setup Time (tDS) | 15 ns (min) | ns | |
| Data Hold Time (tDH) | 35 ns (min) | ns | |
| Settling Time | 600 ns to 0.01% | ns | With AD843 amplifier connected |
Key Features
- 12-bit multiplying DAC with high accuracy and low power consumption.
- Operates from a single +3.3 V to +5 V supply in both Normal and Biased Modes.
- Serial interface for efficient data transfer.
- Low glitch energy: 60 nV-s with amplifier connected.
- Fast settling time: 600 ns to 0.01% with AD843 amplifier connected.
- Available in 16-lead DIP, 16-lead SOP, and 20-lead SSOP packages.
Applications
- Battery-powered instrumentation.
- Laptop computers.
- Upgrades for all 754x series DACs (5 V designs).
Q & A
- What is the resolution of the AD7943BRZ DAC?
The AD7943BRZ has a resolution of 12 bits. - What is the supply voltage range for the AD7943BRZ?
The supply voltage range is from 3.0 V to 5.5 V. - What is the typical power consumption of the AD7943BRZ?
The typical power consumption is 5 µA. - What is the integral nonlinearity (INL) of the AD7943BRZ?
The INL is 0.5 LSB. - What is the differential nonlinearity (DNL) of the AD7943BRZ?
The DNL is 0.5 LSB. - What is the output high voltage (VOH) of the AD7943BRZ?
The VOH is VDD – 0.2 V. - What is the minimum strobe pulsewidth (tSTB) for the AD7943BRZ?
The minimum strobe pulsewidth is 40 ns. - In what packages is the AD7943BRZ available?
The AD7943BRZ is available in 16-lead DIP, 16-lead SOP, and 20-lead SSOP packages. - What are some common applications of the AD7943BRZ?
Common applications include battery-powered instrumentation, laptop computers, and upgrades for all 754x series DACs (5 V designs). - How fast does the AD7943BRZ settle to 0.01% accuracy with an AD843 amplifier?
The settling time to 0.01% accuracy with an AD843 amplifier is 600 ns.
