Overview
The AD5338BRMZ from Analog Devices Inc. is a 10-bit digital-to-analog converter (DAC) that is part of the AD5337/AD5338/AD5339 family. This device features a dual DAC architecture, making it suitable for a variety of applications requiring precise analog signal generation. It operates from a single 2.5 V to 5.5 V supply, consuming a low 250 μA at 3 V, which makes it ideal for portable battery-operated equipment. The AD5338BRMZ is housed in an 8-lead MSOP package and includes on-chip rail-to-rail output buffer amplifiers, ensuring high accuracy and fast settling times.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Resolution | 10 bits | ||
| Relative Accuracy | ±0.5 LSB | ||
| Differential Nonlinearity | ±0.05 LSB | ||
| Supply Voltage | 2.5 V to 5.5 V | V | Analog and Digital |
| Current Consumption | 250 μA @ 3 V, 300 μA @ 5 V | μA | |
| Power-Down Current | 80 nA @ 3 V, 200 nA @ 5 V | nA | |
| Output Voltage Settling Time | 7 μs | μs | 1/4 scale to 3/4 scale change |
| Slew Rate | 0.7 V/μs | V/μs | |
| Operating Temperature Range | -40°C to +105°C | °C | |
| Data Interface | I²C (SMBus compatible at VDD < 3.6 V) | ||
| Package Type | 8-lead MSOP |
Key Features
- Dual 10-bit buffered voltage output DACs
- Low power operation: 250 μA @ 3 V, 300 μA @ 5 V
- 2-wire (I²C-compatible) serial interface with clock rates up to 400 kHz
- External reference type with voltage-buffered output
- No differential output
- On-chip rail-to-rail output buffer amplifiers
- Power-on reset to 0 V and software clear facility
- Simultaneous update of outputs using the LDAC function
- Three power-down modes reducing current consumption to 80 nA @ 3 V or 200 nA @ 5 V
Applications
- Portable battery-powered instruments
- Digital gain and offset adjustment
- Programmable voltage and current sources
- Programmable attenuators
- Industrial process control
- Precision measurement equipment
- Test instruments and data acquisition systems
- Medical devices and automotive systems
Q & A
- What is the resolution of the AD5338BRMZ DAC?
The AD5338BRMZ has a resolution of 10 bits.
- What is the operating voltage range of the AD5338BRMZ?
The AD5338BRMZ operates from a single 2.5 V to 5.5 V supply.
- What is the current consumption of the AD5338BRMZ in normal operation?
The current consumption is typically 250 μA at 3 V and 300 μA at 5 V.
- What is the power-down current of the AD5338BRMZ?
In power-down mode, the current consumption is reduced to 80 nA @ 3 V or 200 nA @ 5 V.
- What type of data interface does the AD5338BRMZ use?
The AD5338BRMZ uses a 2-wire (I²C-compatible) serial interface.
- What is the operating temperature range of the AD5338BRMZ?
The operating temperature range is -40°C to +105°C.
- Does the AD5338BRMZ have on-chip output buffer amplifiers?
Yes, the AD5338BRMZ includes on-chip rail-to-rail output buffer amplifiers.
- Can multiple AD5338BRMZ devices be placed on the same bus?
Yes, multiple devices can be placed on the same bus due to the I²C interface.
- What are some common applications of the AD5338BRMZ?
Common applications include portable battery-powered instruments, industrial process control, precision measurement equipment, and medical devices.
- Does the AD5338BRMZ have a power-on reset feature?
Yes, the AD5338BRMZ has a power-on reset circuit that ensures the DAC outputs power up to 0 V.
