Overview
The AD5648ARUZ-2REEL7 is a low-power, octal, 14-bit, buffered voltage-output Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This device operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. It features an on-chip precision output amplifier that enables rail-to-rail output swing and is available in a 16-lead TSSOP package.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 14 bits | ||||
| Supply Voltage (VDD) | 2.7 | 5.5 | V | ||
| Internal Reference Voltage | 1.25 / 2.5 | V | 5 ppm/°C, depending on model variant | ||
| Full-Scale Output Range | 2.5 / 5 | V | Depending on internal reference used | ||
| Output Voltage Settling Time | 2.5 | 7 | µs | ¼ to ¾ scale settling to ±2 LSB | |
| Current Consumption (Normal Mode) | 1.0 | 1.5 | mA | VDD = 2.7 V to 3.6 V, internal reference off | |
| Current Consumption (Power-Down Mode) | 0.2 | 1 | µA | VDD = 2.7 V to 3.6 V, all DACs powered down | |
| Operating Temperature Range | -40 | 105 | °C | ||
Key Features
- Low power consumption with a single 2.7 V to 5.5 V supply.
- Octal, 14-bit, buffered voltage-output DAC.
- On-chip precision output amplifier enabling rail-to-rail output swing.
- On-chip reference with an internal gain of 2, available in 1.25 V and 2.5 V options.
- Power-on reset circuit ensuring DAC output powers up to 0 V or midscale.
- Power-down feature reducing current consumption to 400 nA at 5 V.
- Software-selectable output loads while in power-down mode.
- Versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP interface standards, operating at clock rates up to 50 MHz.
- Asynchronous CLR function to update all DACs to a user-programmable code.
Applications
- Industrial control systems.
- Aerospace and defense systems.
- Medical devices requiring precise analog output.
- Automotive systems.
- Test and measurement equipment.
- Process control systems.
Q & A
- What is the resolution of the AD5648ARUZ-2REEL7 DAC?
The AD5648ARUZ-2REEL7 has a resolution of 14 bits.
- What is the operating voltage range of the AD5648ARUZ-2REEL7?
The device operates from a single 2.7 V to 5.5 V supply.
- What are the available internal reference voltages for the AD5648ARUZ-2REEL7?
The internal reference voltages are 1.25 V and 2.5 V, each with a 5 ppm/°C temperature coefficient.
- How does the power-on reset circuit function in the AD5648ARUZ-2REEL7?
The power-on reset circuit ensures that the DAC output powers up to 0 V or midscale and remains at this level until a valid write takes place.
- What is the current consumption in power-down mode for the AD5648ARUZ-2REEL7?
In power-down mode, the current consumption is reduced to 400 nA at 5 V.
- What interface standards is the AD5648ARUZ-2REEL7 compatible with?
The device is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards.
- What is the maximum clock rate for the serial interface of the AD5648ARUZ-2REEL7?
The serial interface operates at clock rates up to 50 MHz.
- Can the outputs of all DACs be updated simultaneously in the AD5648ARUZ-2REEL7?
Yes, the outputs of all DACs can be updated simultaneously using the LDAC function.
- What is the settling time for the output voltage of the AD5648ARUZ-2REEL7?
The output voltage settling time is 2.5 µs to 7 µs for ¼ to ¾ scale settling to ±2 LSB.
- What is the operating temperature range for the AD5648ARUZ-2REEL7?
The operating temperature range is -40°C to +105°C.
