Overview
The AD7111KN is a logarithmic Digital-to-Analog Converter (DAC) manufactured by Analog Devices Inc. This component is part of the LOGDAC series, known for its wide dynamic range and fine step resolution. The AD7111KN is fabricated using Linear Compatible CMOS (LC2MOS) technology, which combines precision bipolar circuits with low-power CMOS logic. This DAC is designed to provide high performance and is easily interfaced with standard 8-bit microprocessor buses.
Key Specifications
| Parameter | Value | Units | Conditions/Comments |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | ||
| Category | Integrated Circuits (ICs) - Data Acquisition - Digital to Analog Converters (DAC) | ||
| Package | 16-DIP (0.300", 7.62mm) | ||
| Number of Bits | 17 | ||
| Number of D/A Converters | 1 | ||
| Output Type | Current - Unbuffered | ||
| Differential Output | No | ||
| Data Interface | Parallel | ||
| Voltage - Supply, Analog | 5V | V | |
| Voltage - Supply, Digital | 5V | V | |
| Operating Temperature | 0°C ~ 70°C | °C | |
| Dynamic Range | 0 dB to 88.5 dB attenuation range in 0.375 dB steps | dB | |
| Accuracy Relative to 0 dB Attenuation | ±0.17 dB | dB | |
| Write Pulse Width | 57 ns | ns | |
| Data Valid to Write Setup Time | 25 ns | ns |
Key Features
- Wide Dynamic Range: The AD7111KN offers a wide dynamic range of 0 dB to 88.5 dB attenuation in 0.375 dB steps, making it suitable for applications requiring precise control over a broad range of signal levels.
- Compact Packaging: Available in 16-pin DIP and SOIC packages, this DAC is ideal for space-constrained designs.
- Transparent Latch Operation: The AD7111A version allows for transparent latch operation by tying the CS and WR inputs low, enabling continuous data updating without interrupting the output.
- Fast Microprocessor Interface: With data setup times of 25 ns and a write pulse width of 57 ns, the AD7111KN is compatible with modern microprocessors, facilitating fast and efficient data transfer.
- Precision and Accuracy: The DAC offers high accuracy relative to 0 dB attenuation, with an accuracy of ±0.17 dB, ensuring reliable performance in critical applications.
Applications
- Audio and Video Systems: The wide dynamic range and fine step resolution of the AD7111KN make it suitable for audio and video systems where precise control over signal levels is crucial.
- Industrial Control Systems: This DAC can be used in industrial control systems that require precise analog output signals to control various processes.
- Medical Equipment: The high accuracy and reliability of the AD7111KN make it a good fit for medical equipment that demands precise analog outputs.
- Automotive Systems: It can be used in automotive systems for controlling various parameters such as temperature, pressure, and other analog signals.
Q & A
- What is the dynamic range of the AD7111KN?
The AD7111KN has a dynamic range of 0 dB to 88.5 dB attenuation in 0.375 dB steps.
- What type of packaging is available for the AD7111KN?
The AD7111KN is available in 16-pin DIP and SOIC packages.
- How does the AD7111KN interface with microprocessors?
The AD7111KN is easily interfaced to a standard 8-bit microprocessor bus via an 8-bit data port and standard microprocessor control lines.
- What is the operating temperature range of the AD7111KN?
The operating temperature range of the AD7111KN is from 0°C to 70°C.
- What is the accuracy of the AD7111KN relative to 0 dB attenuation?
The accuracy relative to 0 dB attenuation is ±0.17 dB.
- Can the AD7111KN be used in audio systems?
Yes, the AD7111KN is suitable for audio systems due to its wide dynamic range and fine step resolution.
- What is the write pulse width of the AD7111KN?
The write pulse width of the AD7111KN is 57 ns.
- Is the AD7111KN compatible with the AD7524?
Yes, the AD7111A is exactly pin and function-compatible with the AD7524, allowing for easy upgrades of existing designs.
- What is the supply voltage for the AD7111KN?
The supply voltage for both the analog and digital sections of the AD7111KN is 5V.
- Does the AD7111KN support transparent latch operation?
Yes, the AD7111A version supports transparent latch operation by tying the CS and WR inputs low.
