Overview
The AD7225LRZ, manufactured by Analog Devices Inc., is a quad 8-bit digital-to-analog converter (DAC) integrated circuit. This device features four 8-bit voltage output DACs, each with its own output buffer amplifier and separate reference input terminal. The AD7225LRZ is designed to integrate high-speed digital logic and precision analog circuitry on a single monolithic chip, utilizing an all ion-implanted, high-speed Linear Compatible CMOS (LC2MOS) process. This design allows for a significant reduction in board space and enhanced reliability in systems requiring multiple converters.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8 bit |
| Number of Channels | 4 Channel |
| Sampling Rate | 200 kS/s |
| Settling Time | 5 μs |
| Output Type | Voltage |
| Interface Type | Parallel |
| Analog Supply Voltage | -5 V, 11.4 V to 16.5 V |
| Digital Supply Voltage | -5 V, 11.4 V to 16.5 V |
| Minimum Operating Temperature (°C) | -40 |
| Maximum Operating Temperature (°C) | +85 |
| Mounting Style | SMD/SMT |
| DNL - Differential Nonlinearity | +/- 0.5 LSB |
| Power Dissipation | 150 mW |
| Reference Type | External |
| Package/Case | SOIC-24 |
Key Features
- Four 8-bit voltage output digital-to-analog converters with separate reference input terminals for each DAC.
- Double-buffered interface logic with two 8-bit registers per channel, allowing simultaneous update of all four outputs under control of LDAC.
- Output buffer amplifiers capable of developing 10 V across a 2 kΩ load.
- Compatible with TTL and CMOS (5 V) logic inputs and speed compatible with most 8-bit microprocessors.
- Single- or dual-supply operation with specified performance for input reference voltages from 2 V to 12.5 V.
- Low power consumption, making it suitable for battery-powered devices and energy-efficient applications.
- Compact 24-lead SOIC package for easy integration into various circuit layouts.
Applications
The AD7225LRZ is commonly used in various applications where precise analog output signals are required. These include:
- Industrial control systems.
- Data acquisition systems.
- Test and measurement equipment.
- Instrumentation and process control systems.
- Battery-powered devices and energy-efficient applications.
Q & A
- What is the resolution of the AD7225LRZ DAC?
The AD7225LRZ has a resolution of 8 bits for each of its four DAC channels. - How many DAC channels does the AD7225LRZ have?
The AD7225LRZ has four 8-bit DAC channels. - What is the sampling rate of the AD7225LRZ?
The sampling rate of the AD7225LRZ is 200 kS/s. - What is the settling time of the AD7225LRZ?
The settling time of the AD7225LRZ is 5 μs. - Can the AD7225LRZ operate with a single supply?
Yes, the AD7225LRZ can operate with a single supply using a reference of +10 V, as well as with dual supplies. - What is the power dissipation of the AD7225LRZ?
The power dissipation of the AD7225LRZ is 150 mW. - What type of package does the AD7225LRZ come in?
The AD7225LRZ comes in a 24-lead SOIC package. - Is the AD7225LRZ suitable for battery-powered devices?
Yes, the AD7225LRZ is designed for low power consumption, making it suitable for battery-powered devices and energy-efficient applications. - What are the operating temperature ranges for the AD7225LRZ?
The AD7225LRZ operates within a temperature range of -40°C to +85°C. - What type of logic inputs is the AD7225LRZ compatible with?
The AD7225LRZ is compatible with TTL and CMOS (5 V) logic inputs.
