Overview
The AD7837AR-REEL is a 12-bit, dual-channel digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7837 series and is known for its high accuracy and fast settling time, making it suitable for a variety of applications requiring precise analog output. The AD7837AR-REEL is packaged in a 24-pin SOIC (Small Outline Integrated Circuit) and is available in reel format for high-volume production.
Key Specifications
| Parameter | Value | Units | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Relative Accuracy | ±1/2 LSB (Version B) | LSB | Max, at +25°C |
| Differential Nonlinearity | ±1 LSB | LSB | Max |
| Zero Code Offset Error | ±2 mV | mV | At +25°C, DAC Latch Loaded with All 0s |
| Gain Error | ±2 mV | mV | At +25°C |
| Settling Time | 5 µs | µs | To 0.01% FSR (1/2 LSB) |
| Output Type | Voltage - Buffered | ||
| Reference Type | External | ||
| Voltage - Supply, Analog | ±14.25 V ~ 15.75 V | V | |
| Operating Temperature | -40°C ~ 85°C | °C | |
| Package | 24-pin SOIC |
Key Features
- Dual 12-bit DACs: The AD7837AR-REEL features two independent 12-bit DACs, each capable of producing a buffered voltage output.
- Fast Settling Time: The DACs settle to 0.01% of full-scale range (FSR) in less than 5 µs.
- High Accuracy: The component offers high relative accuracy and low differential nonlinearity, ensuring precise analog outputs.
- External Reference: The DACs use an external reference voltage, which can be set between +10 V and +20 V.
- Parallel Interface: The device uses a parallel interface for loading the 12-bit data word.
- Simultaneous Update: Both DAC latches can be updated simultaneously using the LDAC input, which is asynchronous and independent of the WR input.
Applications
The AD7837AR-REEL is suitable for various applications requiring high precision and fast response times, such as:
- Industrial Control Systems: For precise control of analog outputs in industrial automation.
- Medical Devices: In medical equipment where accurate and fast analog outputs are critical.
- Aerospace and Defense: For applications requiring high reliability and precision.
- Test and Measurement Equipment: For generating precise analog signals in test and measurement instruments.
Q & A
- What is the resolution of the AD7837AR-REEL?
The AD7837AR-REEL has a resolution of 12 bits. - What is the settling time of the DACs?
The DACs settle to 0.01% of full-scale range (FSR) in less than 5 µs. - What type of interface does the AD7837AR-REEL use?
The device uses a parallel interface for loading the 12-bit data word. - Can both DACs be updated simultaneously?
Yes, both DAC latches can be updated simultaneously using the LDAC input. - What is the operating temperature range of the AD7837AR-REEL?
The operating temperature range is -40°C to +85°C. - What is the package type of the AD7837AR-REEL?
The component is packaged in a 24-pin SOIC. - Does the AD7837AR-REEL use an internal or external reference voltage?
The DACs use an external reference voltage. - What is the typical supply voltage range for the analog section?
The typical supply voltage range for the analog section is ±14.25 V to ±15.75 V. - Is the AD7837AR-REEL RoHS compliant?
Yes, the AD7837AR-REEL is RoHS compliant. - What are some common applications for the AD7837AR-REEL?
Common applications include industrial control systems, medical devices, aerospace and defense, and test and measurement equipment.
