Overview
The AD5445YRU-REEL7 is a 12-bit current output digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD5424/AD5433/AD5445 family, which includes 8-, 10-, and 12-bit DACs. The AD5445YRU-REEL7 operates from a 2.5 V to 5.5 V power supply, making it suitable for a variety of applications, including battery-powered devices and systems requiring low power consumption.
The DAC features a fast parallel interface with a write cycle time of 17 ns, an update rate of 20.4 MSPS, and guaranteed monotonic 4-quadrant multiplication. It also includes a power-on reset with brownout detection and a readback function, allowing users to verify the contents of the DAC register.
Key Specifications
| Parameter | Value | Unit | Test Conditions |
|---|---|---|---|
| Resolution | 12-bit | - | - |
| Power Supply Range | 2.5 V to 5.5 V | V | - |
| Power Consumption | 0.4 µA (typical) | µA | Logic inputs = 0 V or VDD, T = −40°C to +125°C |
| Reference Input Range | ±10 V | V | - |
| Feedback Resistance (RFB) | 7 kΩ to 11 kΩ | kΩ | TC = −50 ppm/°C |
| Output Capacitance (IOUT1) | 12 pF to 17 pF | pF | All 0s loaded |
| Settling Time | 15 ns to 30 ns | ns | 10% to 90%, VREF = 10 V, RLOAD = 100 Ω |
| Temperature Range | −40°C to +125°C | °C | - |
| Package Type | 20-lead TSSOP and chip scale (4 mm × 4 mm) | - | - |
Key Features
- Fast parallel interface with a 17 ns write cycle time and an update rate of 20.4 MSPS.
- Guaranteed monotonic 4-quadrant multiplication.
- Power-on reset with brownout detection.
- Readback function to verify the contents of the DAC register.
- Integrated feedback resistor (RFB) for temperature tracking and full-scale voltage output.
- Low power consumption of 0.4 µA typical.
- Extended temperature range: −40°C to +125°C.
- Pin-compatible with AD7524/AD7533/AD7545 in chip scale packages.
Applications
- Portable battery-powered applications.
- Waveform generators.
- Analog processing.
- Instrumentation applications.
- Programmable amplifiers and attenuators.
- Digitally controlled calibration.
- Programmable filters and oscillators.
- Composite video.
- Ultrasound.
- Gain, offset, and voltage trimming.
Q & A
- What is the resolution of the AD5445YRU-REEL7 DAC?
The AD5445YRU-REEL7 is a 12-bit current output DAC.
- What is the power supply range for the AD5445YRU-REEL7?
The device operates from a 2.5 V to 5.5 V power supply.
- What is the typical power consumption of the AD5445YRU-REEL7?
The typical power consumption is 0.4 µA.
- What is the reference input range for the AD5445YRU-REEL7?
The reference input range is ±10 V.
- What is the settling time of the AD5445YRU-REEL7?
The settling time is 15 ns to 30 ns (10% to 90%, VREF = 10 V, RLOAD = 100 Ω).
- What are the package options for the AD5445YRU-REEL7?
The device is available in 20-lead TSSOP and chip scale (4 mm × 4 mm) packages.
- Does the AD5445YRU-REEL7 support readback functionality?
Yes, it includes a readback function to verify the contents of the DAC register.
- What is the temperature range for the AD5445YRU-REEL7?
The device operates over an extended temperature range of −40°C to +125°C.
- Is the AD5445YRU-REEL7 suitable for battery-powered applications?
Yes, it is suitable for battery-powered applications due to its low power consumption.
- What are some common applications of the AD5445YRU-REEL7?
Common applications include waveform generators, analog processing, instrumentation, programmable amplifiers and attenuators, and more.
