Overview
The AD7233BN is a 12-bit, voltage-output, digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the DACPORT family and is known for its high precision and versatility. The AD7233BN includes an output amplifier and a Zener voltage reference, all packaged in an 8-pin mini-DIP package. It does not require external trims to achieve full specified performance, making it a reliable choice for various applications. The device operates with a bipolar output range of -5V to +5V and features a fast serial interface compatible with microcomputers and digital signal processors.
Key Specifications
| Parameter | Unit | Test Conditions/Comments |
|---|---|---|
| Resolution | 12 Bits | |
| Relative Accuracy | ±1/2 LSB max | |
| Differential Nonlinearity | ±0.9 LSB max | |
| Bipolar Zero Error | ±6 LSB max | |
| Full-Scale Error | ±8 LSB max | |
| Full-Scale Temperature Coefficient | ±30 ppm of FSR/°C typ | |
| Input High Voltage (VINH) | 2.4 V min | |
| Input Low Voltage (VINL) | 0.8 V max | |
| Input Current (IIN) | ±1 µA max | VIN = 0 V to VDD |
| Input Capacitance | 8 pF max | |
| Output Voltage Range | ±5 V DC | |
| Output Impedance | 0.5 Ω typ | |
| Operating Temperature Range | –40°C to +85°C |
Key Features
- High Precision: 12-bit resolution with ±1/2 LSB relative accuracy and ±0.9 LSB differential nonlinearity.
- Fast Serial Interface: Allows data transfer rates up to 5 MHz, enabling a DAC update rate of 300 kHz.
- Bipolar Output Range: -5V to +5V output range, making it suitable for a variety of applications.
- Internal Reference and Amplifier: Includes a Zener voltage reference and a noninverting CMOS amplifier, eliminating the need for external components.
- Flexible Update Modes: The DAC latch can be updated either by bringing LDAC low or by tying LDAC permanently low for automatic updates.
- Compact Packaging: Available in an 8-pin mini-DIP package, making it space-efficient.
Applications
- Industrial Control Systems: Suitable for precision control and measurement applications due to its high accuracy and stability.
- Medical Devices: Can be used in medical equipment requiring precise analog output signals.
- Aerospace and Defense: Its reliability and precision make it a good fit for critical applications in aerospace and defense.
- Automotive Systems: Used in automotive systems that require accurate and reliable analog output signals).
Q & A
- What is the resolution of the AD7233BN?
The AD7233BN has a 12-bit resolution.
- What is the output voltage range of the AD7233BN?
The output voltage range is -5V to +5V.
- How does the serial interface of the AD7233BN work?
The serial interface allows data transfer rates up to 5 MHz. Data is clocked into the input shift register on the falling edge of SCLK, and the DAC latch is updated when LDAC is brought low or when LDAC is tied permanently low).
- What is the operating temperature range of the AD7233BN?
The operating temperature range is –40°C to +85°C).
- Does the AD7233BN require external trims for full performance?
No, the AD7233BN does not require external trims to achieve full specified performance).
- What type of amplifier is used in the AD7233BN?
The output of the voltage-mode D/A converter is buffered by a noninverting CMOS amplifier).
- How is the DAC latch updated in the AD7233BN?
The DAC latch can be updated either by bringing LDAC low or by tying LDAC permanently low for automatic updates).
- What is the typical output impedance of the AD7233BN?
The typical output impedance is 0.5 Ω).
- Is the AD7233BN suitable for single supply operation?
No, the AD7233BN is designed for bipolar operation and is not suitable for single supply operation. For single supply operation, refer to the AD7243).
- What is the maximum data transfer rate of the AD7233BN?
The maximum data transfer rate is up to 5 MHz, allowing a DAC update rate of 300 kHz).
