Overview
The AD7548KN is a monolithic 12-bit CMOS multiplying digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD7548 series and is known for its high precision and versatility in various applications. The AD7548KN operates with a single supply voltage ranging from +5 V to +15 V, making it suitable for a wide range of electronic systems.
The device features on-chip data latches, allowing easy interface with microprocessors. It is particularly useful in applications requiring high accuracy and low power consumption.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Resolution | 12 bits | |
| Supply Voltage | +5 V to +15 V | |
| Power Consumption | < 0.5 mW at VDD = +5 V | |
| Temperature Range | –40°C to +85°C | |
| Digital Input Levels | TTL/CMOS compatible | |
| Package Types | 20-lead DIP, 20-terminal surface mount packages | |
| Maximum Digital Input Current | 100 µA (typical) | 0 V to VDD |
Key Features
- On-chip data latches for easy microprocessor interface
- Single supply operation from +5 V to +15 V
- Low power consumption, less than 0.5 mW at VDD = +5 V
- TTL/CMOS compatible digital inputs
- Small package size: 20-lead DIP and 20-terminal surface mount packages
- Latch free operation (Schottky protection diodes not required)
- Direct interface to 8-bit and 16-bit microprocessors using standard CS and WR control signals
Applications
- Digital control of gain and attenuation in audio and signal processing systems
- Adjustment of filter parameters in various electronic circuits
- Stereo audio circuits requiring precise DAC-to-DAC matching
- X-Y graphics and other graphical display systems
- Battery-operated equipment due to low power consumption
Q & A
- What is the resolution of the AD7548KN DAC?
The AD7548KN has a resolution of 12 bits.
- What is the operating supply voltage range for the AD7548KN?
The device operates from +5 V to +15 V.
- How much power does the AD7548KN consume at VDD = +5 V?
The device consumes less than 0.5 mW at VDD = +5 V.
- What are the digital input levels compatible with the AD7548KN?
The device is compatible with TTL/CMOS digital input levels.
- What package types are available for the AD7548KN?
The device is available in 20-lead DIP and 20-terminal surface mount packages.
- Does the AD7548KN require Schottky protection diodes?
No, the AD7548KN operates latch free and does not require Schottky protection diodes.
- Can the AD7548KN be directly interfaced with microprocessors?
- What are some common applications of the AD7548KN?
The AD7548KN is commonly used in digital control of gain and attenuation, adjustment of filter parameters, stereo audio circuits, X-Y graphics, and battery-operated equipment.
- What is the temperature range for the AD7548KN?
The device operates over a temperature range of –40°C to +85°C.
- How does the AD7548KN handle digital input currents?
The device has a typical digital input current of less than 100 µA when the inputs are between 0 V and VDD.
