Overview
The AD7548JRZ-REEL7 is a 12-bit monolithic CMOS Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component is designed for use with 8-bit bus microprocessors and is particularly suited for applications requiring high precision and flexibility. The AD7548 can be configured to accept either left- or right-justified data, with the option to load the least significant byte or most significant byte first using standard TTL compatible control inputs. It features a separate load DAC control input, allowing the user to update the analog output either coincident with loading new data or at any time after the data loading event, which is crucial in multi-DAC systems where simultaneous update of all DACs is necessary.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Package / Case | 20-SOIC (0.295, 7.50mm Width) |
| Number of Pins | 20 |
| Operating Temperature | 0°C ~ 70°C |
| Min Supply Voltage | 4.75 V |
| Max Supply Voltage | 15.75 V |
| Reference Type | External |
| Data Interface | Parallel |
| Settling Time | 1.5 μs (Typ) |
| Integral Nonlinearity (INL) | 1 LSB |
| Max Power Dissipation | 450 mW |
| Output Type | Current - Unbuffered |
Key Features
- 12-bit resolution with external reference input
- Parallel data interface compatible with 8-bit bus microprocessors
- Configurable data loading: left- or right-justified, least significant byte or most significant byte first
- Separate load DAC control input for flexible output updating
- R-2R architecture for high linearity and accuracy
- Operating temperature range: 0°C ~ 70°C
- Surface mount package (20-SOIC) for easy integration
Applications
- Automated Test Equipment
- Display Electronics
- Low Power Systems
- Calibration
- Microprocessor Controlled Circuits
- Video Encoder
- Digital Offset & Gain Adjustment
- Data Acquisition
- Software Radio
- Precision AGC Circuits
Q & A
- What is the resolution of the AD7548JRZ-REEL7? The AD7548JRZ-REEL7 has a 12-bit resolution.
- What type of data interface does the AD7548JRZ-REEL7 use? It uses a parallel data interface compatible with 8-bit bus microprocessors.
- Can the AD7548JRZ-REEL7 be configured for different data loading formats? Yes, it can be configured to accept either left- or right-justified data, with the option to load the least significant byte or most significant byte first.
- What is the settling time of the AD7548JRZ-REEL7? The settling time is 1.5 μs (Typ).
- What is the operating temperature range of the AD7548JRZ-REEL7? The operating temperature range is 0°C ~ 70°C.
- What is the package type of the AD7548JRZ-REEL7? It is packaged in a 20-SOIC (0.295, 7.50mm Width).
- What is the maximum supply voltage for the AD7548JRZ-REEL7? The maximum supply voltage is 15.75 V.
- What is the minimum supply voltage for the AD7548JRZ-REEL7? The minimum supply voltage is 4.75 V.
- Does the AD7548JRZ-REEL7 have an internal reference? No, it uses an external reference input.
- What are some common applications of the AD7548JRZ-REEL7? Common applications include Automated Test Equipment, Display Electronics, Low Power Systems, and more.
