Overview
The AD7945BRZ-REEL is a 12-bit multiplying Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This device is part of the AD7943, AD7945, and AD7948 family, which are designed to operate from a single +5 V supply (Normal Mode) and a single +3.3 V to +5 V supply (Biased Mode). The AD7945 specifically features a 12-bit parallel interface, making it suitable for applications requiring high-speed and low power consumption.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Supply Voltage | +3.3 V to +5 V | V | Normal and Biased Mode |
| Power Consumption | 25 µW | W | Typical |
| Settling Time | 600 ns | s | Typical to 0.01% |
| Operating Temperature Range | -40°C to 85°C | °C | |
| Interface | Parallel | 12-bit parallel interface | |
| Package Type | 20-Lead SOIC (Wide) | ||
| Output Type | Current - Unbuffered | ||
| INL/DNL | ±0.5 LSB (Max) | LSB | |
| Digital Feedthrough | 5 nV-s (Typ) | nV-s |
Key Features
- 12-bit multiplying DAC with high accuracy and low power consumption.
- Operates from a single +5 V supply (Normal Mode) and a single +3.3 V to +5 V supply (Biased Mode).
- Fast settling time of 600 ns to 0.01%.
- Low glitch impulse of 60 nV-s.
- Parallel 12-bit interface for high-speed data transfer.
- Low power consumption of 25 µW typical.
- Available in 20-lead DIP, SOP, and SSOP packages.
Applications
- Battery-powered instrumentation.
- Laptop computers.
- Upgrades for all 754x series DACs (5 V designs).
- Any application requiring fast, low-power, and accurate digital-to-analog conversion.
Q & A
- What is the resolution of the AD7945BRZ-REEL?
The AD7945BRZ-REEL has a resolution of 12 bits. - What are the supply voltage options for the AD7945BRZ-REEL?
The device can operate from a single +5 V supply (Normal Mode) and a single +3.3 V to +5 V supply (Biased Mode). - What is the typical power consumption of the AD7945BRZ-REEL?
The typical power consumption is 25 µW. - What is the settling time of the AD7945BRZ-REEL?
The settling time is 600 ns to 0.01%. - What type of interface does the AD7945BRZ-REEL use?
The device uses a 12-bit parallel interface. - What are the available package types for the AD7945BRZ-REEL?
The device is available in 20-lead DIP, SOP, and SSOP packages. - What is the operating temperature range of the AD7945BRZ-REEL?
The operating temperature range is -40°C to 85°C. - What is the output type of the AD7945BRZ-REEL?
The output is current - unbuffered. - What are some typical applications of the AD7945BRZ-REEL?
Typical applications include battery-powered instrumentation, laptop computers, and upgrades for all 754x series DACs (5 V designs). - What is the INL/DNL specification of the AD7945BRZ-REEL?
The INL/DNL is ±0.5 LSB (Max).
