Overview
The AD7943ARS-B is a 12-bit multiplying Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component is part of the AD7943 series, which includes the AD7943, AD7945, and AD7948. The AD7943ARS-B operates from a single +3.3 V to +5 V supply and is designed to offer superior speed and power consumption performance compared to its predecessors, such as the AD7543 series.
The device features a serial interface and is available in various package options, including 16-lead DIP, 16-lead SOP (Small Outline Package), and 20-lead SSOP (Shrink Small Outline Package).
Key Specifications
| Parameter | Value | Units | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 12 | Bits | 1 LSB = VREF/2^12 = 2.44 mV when VREF = 10 V |
| Supply Voltage Range | 3.3 V to 5.5 V | V | |
| Power Consumption (Typical) | 5 µA | µA | VINH = VDD – 0.1 V, VINL = 0.1 V, SRO Open Circuit, No STB Signal |
| Settling Time | 600 ns | ns | To 0.01% with AD843 |
| Glitch Energy | 60 nV-s | nV-s | With Amplifier Connected |
| Operating Temperature Range | -40°C to +85°C | °C | |
| Interface Type | Serial | ||
| Package Types | 16-lead DIP, 16-lead SOP, 20-lead SSOP |
Key Features
- High Resolution: 12-bit resolution providing precise analog output.
- Low Power Consumption: Typical power consumption of 5 µA, making it suitable for battery-powered applications.
- Fast Interface: Serial interface with a strobe pulsewidth of 40 ns and data setup time of 15 ns.
- Low Glitch Energy: 60 nV-s glitch energy with an amplifier connected, ensuring minimal distortion.
- Fast Settling Time: Settles to 0.01% in 600 ns with the AD843 amplifier.
- Multiple Package Options: Available in 16-lead DIP, 16-lead SOP, and 20-lead SSOP packages.
Applications
- Battery-Powered Instrumentation: Ideal for portable and battery-powered devices due to its low power consumption.
- Laptop Computers: Suitable for use in laptop computers and other mobile devices.
- Upgrades for 754x Series DACs: Can replace industry-standard AD7543, AD7545, and AD7548 in many applications.
Q & A
- What is the resolution of the AD7943ARS-B DAC?
The AD7943ARS-B has a 12-bit resolution.
- What is the supply voltage range for the AD7943ARS-B?
The supply voltage range is from +3.3 V to +5.5 V.
- What is the typical power consumption of the AD7943ARS-B?
The typical power consumption is 5 µA.
- What is the settling time of the AD7943ARS-B?
The settling time is 600 ns to 0.01% with the AD843 amplifier.
- What types of interfaces does the AD7943ARS-B support?
The AD7943ARS-B supports a serial interface.
- In what package types is the AD7943ARS-B available?
The AD7943ARS-B is available in 16-lead DIP, 16-lead SOP, and 20-lead SSOP packages.
- What are some common applications of the AD7943ARS-B?
Common applications include battery-powered instrumentation, laptop computers, and upgrades for 754x series DACs.
- What is the operating temperature range of the AD7943ARS-B?
The operating temperature range is from -40°C to +85°C.
- Does the AD7943ARS-B have low glitch energy?
Yes, the AD7943ARS-B has a low glitch energy of 60 nV-s with an amplifier connected.
- Is the AD7943ARS-B suitable for high-speed applications?
Yes, it is suitable for high-speed applications due to its fast interface and settling time.
