Overview
The AD5325BRM-REEL7 is a 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD5305/AD5315/AD5325 series, which includes quad 8-, 10-, and 12-bit buffered voltage output DACs. The AD5325 operates from a single 2.5 V to 5.5 V supply and is housed in a 10-lead MSOP package. It is designed for low power consumption, with a typical current draw of 500 μA at 3 V and 600 μA at 5 V. The device features a 2-wire serial interface compatible with I2C and SMBus protocols, allowing for clock rates up to 400 kHz.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 12 bits | ||
| Supply Voltage | 2.5 V to 5.5 V | V | |
| Current Consumption | 500 μA @ 3 V, 600 μA @ 5 V | μA | |
| Operating Temperature | −40°C to +105°C | °C | |
| Interface | 2-wire (I2C-compatible) | Clock rates up to 400 kHz | |
| Output Range | 0 V to VREF | V | |
| Slew Rate | 0.7 V/μs | V/μs | |
| Settling Time | 8 μs to 10 μs | μs | ¼ scale to ¾ scale change |
| Power-Down Current | 80 nA @ 3 V, 200 nA @ 5 V | nA | |
| Package | 10-lead MSOP |
Key Features
- Low Power Operation: Consumes 500 μA at 3 V and 600 μA at 5 V.
- 2-Wire Serial Interface: I2C-compatible with clock rates up to 400 kHz.
- Rail-to-Rail Output: On-chip output buffer amplifiers provide rail-to-rail output swing.
- Power-On Reset: Ensures DAC outputs power up to 0 V and remain there until a valid write takes place.
- Power-Down Modes: Three programmable power-down modes to reduce current consumption.
- Simultaneous Update: Outputs can be updated simultaneously using the LDAC function.
- Software Clear Facility: Resets all input and DAC registers to 0 V.
- Data Readback Facility: Allows reading back the current DAC settings.
Applications
- Portable Battery-Powered Instruments: Ideal for devices requiring low power consumption.
- Digital Gain and Offset Adjustment: Used in applications requiring precise voltage adjustments.
- Programmable Voltage and Current Sources: Suitable for generating variable voltages and currents.
- Programmable Attenuators: Used in signal processing and conditioning applications.
- Industrial Process Control: Employed in control systems requiring precise analog output control.
Q & A
- What is the resolution of the AD5325BRM-REEL7?
The AD5325BRM-REEL7 has a resolution of 12 bits.
- What is the operating voltage range of the AD5325BRM-REEL7?
The operating voltage range is from 2.5 V to 5.5 V.
- What is the typical current consumption of the AD5325BRM-REEL7?
The typical current consumption is 500 μA at 3 V and 600 μA at 5 V.
- What type of interface does the AD5325BRM-REEL7 use?
The AD5325BRM-REEL7 uses a 2-wire serial interface compatible with I2C and SMBus protocols.
- What is the slew rate of the output amplifiers in the AD5325BRM-REEL7?
The slew rate of the output amplifiers is 0.7 V/μs.
- Does the AD5325BRM-REEL7 have power-down modes?
Yes, it has three programmable power-down modes to reduce current consumption.
- What is the settling time of the AD5325BRM-REEL7?
The settling time is typically between 8 μs to 10 μs for a ¼ scale to ¾ scale change.
- Can the outputs of the AD5325BRM-REEL7 be updated simultaneously?
Yes, the outputs can be updated simultaneously using the LDAC function.
- Does the AD5325BRM-REEL7 have a power-on reset feature?
Yes, it ensures that the DAC outputs power up to 0 V and remain there until a valid write takes place.
- What is the operating temperature range of the AD5325BRM-REEL7?
The operating temperature range is from −40°C to +105°C.
