Overview
The AD5445YRU-REEL, produced by Analog Devices Inc., is a 12-bit current output digital-to-analog converter (DAC). This device is part of the AD5424/AD5433/AD5445 family, which includes 8-, 10-, and 12-bit DACs, respectively. The AD5445 operates from a 2.5 V to 5.5 V power supply, making it suitable for battery-powered applications and various other uses. It features a fast parallel interface with a write cycle time of 17 ns and an update rate of 20.4 MSPS. The DAC utilizes a CMOS submicron process, offering excellent 4-quadrant multiplication characteristics with a large signal multiplying bandwidth of up to 10 MHz.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Resolution | - | - | 12 Bits | - | - |
| Relative Accuracy | - | - | ±1 LSB | - | - |
| Differential Nonlinearity | - | - | –1/+2 LSB | - | Guaranteed monotonic |
| Gain Error | - | - | ±10 mV | - | - |
| Gain Error Temperature Coefficient | - | - | ±5 ppm/°C | - | - |
| Output Leakage Current | - | - | ±10 nA | - | Data = 0×0000, TA = 25°C |
| Power Supply Range | 2.5 V | - | 5.5 V | - | - |
| Power Consumption | - | 0.4 µA | - | - | Typical, logic inputs = 0 V or VDD |
| Reference Input Range | - | - | ±10 V | - | - |
| Package Type | - | - | 20-lead TSSOP | - | - |
| Operating Temperature Range | -40°C | - | +125°C | - | - |
Key Features
- Fast parallel interface with a 17 ns write cycle time and an update rate of 20.4 MSPS.
- 12-bit current output DAC with ±1 LSB relative accuracy and –1/+2 LSB differential nonlinearity.
- Operates from a 2.5 V to 5.5 V power supply, suitable for battery-powered applications.
- Guaranteed monotonic 4-quadrant multiplication with a large signal multiplying bandwidth of up to 10 MHz.
- Data readback function allowing the user to read the contents of the DAC register via the DB pins.
- Power-on reset with brownout detection and low power consumption (typical 0.4 µA).
- Integrated feedback resistor (RFB) for temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier.
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-REEL DAC?
The AD5445YRU-REEL is a 12-bit current output DAC.
- What is the power supply range for the AD5445YRU-REEL?
The device operates from a 2.5 V to 5.5 V power supply).
- What is the update rate of the AD5445YRU-REEL?
The update rate is 20.4 MSPS).
- What is the reference input range for the AD5445YRU-REEL?
The reference input range is ±10 V).
- What is the operating temperature range for the AD5445YRU-REEL?
The operating temperature range is –40°C to +125°C).
- Does the AD5445YRU-REEL support data readback?
Yes, the device supports data readback, allowing the user to read the contents of the DAC register via the DB pins).
- What is the typical power consumption of the AD5445YRU-REEL?
The typical power consumption is 0.4 µA).
- What package types are available for the AD5445YRU-REEL?
The device is available in a 20-lead TSSOP package).
- What are some common applications for the AD5445YRU-REEL?
Common applications include portable battery-powered applications, waveform generators, analog processing, instrumentation, and more).
- Does the AD5445YRU-REEL have integrated feedback resistor (RFB) for temperature tracking?
Yes, it has an integrated feedback resistor (RFB) for temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier).
