Overview
The AD7834AR-REEL is a quad 14-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This device integrates four 14-bit DACs on a single monolithic chip, offering a versatile solution for various applications requiring precise analog output control. The AD7834AR-REEL features serial input loading, making it suitable for systems that require sequential data transmission. It is available in 28-lead SOIC and PDIP packages, providing flexibility in design and implementation.
Key Specifications
| Parameter | Value | Unit | Description |
|---|---|---|---|
| Resolution | 14 bits | Number of bits for each DAC | |
| Output Voltage Range | ±8.192 V | V | Maximum and minimum output voltage range |
| Output Voltage Span | 14 V | V | Maximum output voltage span |
| Power-on Reset | Yes | Holds DAC output voltage levels to within ±2 V of DSG potential on power-on | |
| Package Type | 28-lead SOIC, 28-lead PDIP | Available package types | |
| Operating Temperature | -40°C to 85°C | °C | Operating temperature range |
| SCLK Cycle Time | 100 ns min | ns | Minimum SCLK cycle time |
| SCLK Low Time | 50 ns min | ns | Minimum SCLK low time |
| SCLK High Time | 30 ns min | ns | Minimum SCLK high time |
Key Features
- Four 14-bit DACs in one package
- Serial loading via DIN, SCLK, and FSYNC pins
- Five dedicated package address pins (PA0 to PA4) for up to 32 devices to be individually addressed
- LDAC signal to update all four DAC outputs simultaneously or individually
- Asynchronous CLR input to set all signal outputs to a user-defined voltage level
- Common voltage reference inputs
- Surface-mount packages (28-lead SOIC and PDIP)
Applications
- Process control
- Automatic test equipment
- General-purpose instrumentation
Q & A
- What is the resolution of the AD7834AR-REEL DACs?
The AD7834AR-REEL has a resolution of 14 bits for each DAC. - What is the output voltage range of the AD7834AR-REEL?
The output voltage range is ±8.192 V. - How many DACs are integrated into the AD7834AR-REEL?
The AD7834AR-REEL integrates four 14-bit DACs. - What types of packages are available for the AD7834AR-REEL?
The AD7834AR-REEL is available in 28-lead SOIC and 28-lead PDIP packages. - Does the AD7834AR-REEL support multiple device addressing?
Yes, it supports up to 32 devices to be individually addressed using five dedicated package address pins (PA0 to PA4). - How does the LDAC signal function in the AD7834AR-REEL?
The LDAC signal is used to update all four DAC outputs simultaneously or individually on reception of new data. - What is the purpose of the asynchronous CLR input in the AD7834AR-REEL?
The asynchronous CLR input sets all signal outputs to a user-defined voltage level on the device sense ground pin (DSG). - What are some common applications of the AD7834AR-REEL?
Common applications include process control, automatic test equipment, and general-purpose instrumentation. - What is the operating temperature range of the AD7834AR-REEL?
The operating temperature range is -40°C to 85°C. - How does the power-on reset function work in the AD7834AR-REEL?
On power-on, the internal circuitry holds the DAC output voltage levels to within ±2 V of the DSG potential until the power supplies stabilize.
