Overview
The AD7847BRZ is a dual, 12-bit multiplying digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7837/AD7847 series and is fabricated using Linear Compatible CMOS (LC2MOS), an advanced mixed technology process that combines precision bipolar circuits with low power CMOS logic. The AD7847BRZ features output amplifiers and is designed for high precision and reliability, making it suitable for various industrial and professional applications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Relative Accuracy | ±1 LSB max | ||
| Differential Nonlinearity | ±1 LSB max | ||
| Zero Code Offset Error | ±2 mV max @ +25°C | DAC Latch Loaded with All 0s | |
| Gain Error | ±4 mV max @ +25°C | ||
| Settling Time | 3 µs | ||
| Output Type | Voltage - Buffered | ||
| Reference Type | External | ||
| Voltage - Supply, Analog | ±14.25 V ~ 15.75 V | ||
| Operating Temperature | -40°C ~ 85°C | ||
| Package | 24-SOIC (Wide) |
Key Features
- Complete, dual 12-bit multiplying digital-to-analog converter with output amplifiers on a monolithic CMOS chip.
- No external user trims required to achieve full specified performance.
- Microprocessor compatible with high speed data latches and interface logic.
- Accepts 12-bit parallel data loaded into the respective DAC latch using the WR input and separate Chip Select inputs for each DAC.
- Output amplifiers capable of developing ±10 V across a 2 kΩ load, internally compensated with low input offset voltage due to laser trimming at wafer level.
- Low leakage configuration ensures low offset errors over the specified temperature range.
- Fabricated in Linear Compatible CMOS (LC2MOS) process, combining precision bipolar circuits with low power CMOS logic.
Applications
- Industrial control systems requiring precise analog output signals.
- Automotive systems where high accuracy and reliability are crucial.
- Medical devices that demand precise control over analog outputs.
- Aerospace and defense applications requiring high precision and reliability.
- Test and measurement equipment where accurate analog signals are necessary.
Q & A
- What is the resolution of the AD7847BRZ?
The AD7847BRZ has a resolution of 12 bits.
- What is the relative accuracy of the AD7847BRZ?
The relative accuracy is ±1 LSB max.
- What is the settling time of the AD7847BRZ?
The settling time is 3 µs.
- What type of output does the AD7847BRZ provide?
The output is voltage-buffered.
- What is the reference type for the AD7847BRZ?
The reference type is external.
- What is the operating temperature range of the AD7847BRZ?
The operating temperature range is -40°C to 85°C.
- What package type is the AD7847BRZ available in?
The AD7847BRZ is available in a 24-SOIC (Wide) package.
- Is the AD7847BRZ microprocessor compatible?
- How are the output amplifiers of the AD7847BRZ compensated?
The output amplifiers are internally compensated with low input offset voltage due to laser trimming at wafer level.
- What process is the AD7847BRZ fabricated in?
The AD7847BRZ is fabricated in Linear Compatible CMOS (LC2MOS) process.
