Overview
The AD5398BCPZ-REEL, produced by Analog Devices Inc., is a highly integrated 10-bit digital-to-analog converter (DAC) designed for a variety of applications, particularly in consumer and industrial sectors. This DAC features a current sinking capability of up to 120 mA and operates from a single 2.7 V to 5.5 V supply. It is controlled via a 2-wire I2C-compatible serial interface, supporting clock rates up to 400 kHz. The device is notable for its power-on reset circuit and power-down feature, which reduces current consumption to 1 µA maximum, making it energy-efficient and reliable for various use cases.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage | 2.7 | 5.5 | V | ||
| Output Current Sink Capability | 120 | mA | |||
| Resolution | 10-bit | ||||
| Output Current Settling Time | 250 | µs | VDD = 5 V, RL = 25 Ω, LL = 680 µH, ¼ scale to ¾ scale change (0x100 to 0x300) | ||
| Slew Rate | 0.3 | mA/µs | |||
| Temperature Range | -40 | 85 | °C | B Version, without derating | |
| I2C Clock Rate | 400 | kHz | |||
| Power-Down Current | 1 | µA | Maximum |
Key Features
- Internal Reference: The AD5398 includes an internal reference, simplifying the design and reducing external component count.
- Power-On Reset: Ensures the DAC output powers up to 0 V and remains there until a valid write takes place.
- Power-Down Feature: Reduces current consumption to 1 µA maximum, enhancing energy efficiency.
- I2C Interface: Supports clock rates up to 400 kHz, facilitating easy communication and control.
- Temperature Stability: Operates over a temperature range of -40°C to +85°C without derating, making it suitable for industrial applications.
- Output Protection: Includes an output protection diode to safeguard the device from potential damage.
Applications
- Consumer Electronics: Designed for autofocus, image stabilization, and optical zoom in camera phones, digital still cameras, and camcorders.
- Industrial Applications: Suitable for controlling temperature, light, and movement in various industrial settings.
Q & A
- What is the resolution of the AD5398 DAC?
The AD5398 is a 10-bit DAC. - What is the output current sink capability of the AD5398?
The AD5398 can sink up to 120 mA of current. - What is the operating voltage range of the AD5398?
The AD5398 operates from a single 2.7 V to 5.5 V supply. - What is the maximum clock rate supported by the I2C interface of the AD5398?
The I2C interface supports clock rates up to 400 kHz. - What is the power-down current consumption of the AD5398?
The power-down current consumption is 1 µA maximum. - What are the primary applications of the AD5398?
The AD5398 is primarily used in autofocus, image stabilization, and optical zoom in consumer electronics, as well as in various industrial applications. - Does the AD5398 have an internal reference?
Yes, the AD5398 includes an internal reference. - What is the temperature range over which the AD5398 operates without derating?
The AD5398 operates over a temperature range of -40°C to +85°C without derating. - How does the power-on reset feature work in the AD5398?
The power-on reset circuit ensures that the DAC output powers up to 0 V and remains there until a valid write takes place. - What type of interface does the AD5398 use for communication?
The AD5398 uses a 2-wire I2C-compatible serial interface.
