Overview
The AD5821ABCBZ-REEL7, produced by Analog Devices Inc., is a single, 10-bit digital-to-analog converter (DAC) with an output current sinking capability of 120 mA. This device operates from a single power supply ranging from 2.7 V to 5.5 V and features an internal reference. It is controlled via a 2-wire, I2C-compatible serial interface that supports data rates up to 400 kHz. The AD5821A includes a power-on reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place. It also has a power-down feature that reduces the current consumption to 1 μA maximum.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | - | - | 10-bit | - | - |
| Output Current Sinking | - | - | 120 mA | - | - |
| Power Supply Range | 2.7 V | - | 5.5 V | V | - |
| Operating Temperature Range | -40°C | - | 85°C | °C | - |
| I2C Clock Rate | - | - | 400 kHz | - | - |
| Power Consumption (Power Down) | - | - | 1 μA | A | Maximum |
| Package Type | - | - | 3 × 3 array WLCSP | - | - |
Key Features
- Current sink capability of 120 mA
- 10-bit resolution
- Internal reference
- 2-wire, I2C-compatible serial interface with clock rates up to 400 kHz
- Power-on reset circuit ensuring DAC output powers up to 0 V
- Power-down feature reducing current consumption to 1 μA maximum
- Available in 3 × 3 array WLCSP package
- Guaranteed monotonic over all codes
- Ultralow noise preamplifier
- Integrated current sense resistor
Applications
The AD5821ABCBZ-REEL7 is designed for various consumer and industrial applications:
- Consumer Applications:
- Autofocus in camera phones, digital still cameras, and camcorders
- Image stabilization
- Optical zoom
- Shutters, iris/exposure, neutral density (ND) filters, and lens covers
- Industrial Applications:
- Heater controls
- Fan controls
- Cooler (Peltier) controls
- Solenoid controls
- Valve controls
- Linear actuator controls
- Light controls
- Current loop controls
Q & A
- What is the resolution of the AD5821ABCBZ-REEL7 DAC?
The AD5821ABCBZ-REEL7 has a 10-bit resolution.
- What is the output current sinking capability of the AD5821ABCBZ-REEL7?
The output current sinking capability is 120 mA.
- What is the power supply range for the AD5821ABCBZ-REEL7?
The power supply range is from 2.7 V to 5.5 V.
- What is the operating temperature range for the AD5821ABCBZ-REEL7?
The operating temperature range is from -40°C to 85°C.
- What type of serial interface does the AD5821ABCBZ-REEL7 use?
The AD5821ABCBZ-REEL7 uses a 2-wire, I2C-compatible serial interface.
- What is the maximum clock rate for the I2C interface?
The maximum clock rate for the I2C interface is 400 kHz.
- What is the power consumption in power-down mode?
The power consumption in power-down mode is 1 μA maximum.
- In what package type is the AD5821ABCBZ-REEL7 available?
The AD5821ABCBZ-REEL7 is available in a 3 × 3 array WLCSP package.
- Does the AD5821ABCBZ-REEL7 have an internal reference?
Yes, the AD5821ABCBZ-REEL7 has an internal reference.
- What are some common applications for the AD5821ABCBZ-REEL7?
Common applications include autofocus, image stabilization, optical zoom in consumer devices, and various industrial control applications such as heater, fan, and solenoid controls.
