Overview
The AD7923BRU, produced by Analog Devices Inc., is a high-speed, low-power, 12-bit, 4-channel successive approximation (SAR) analog-to-digital converter (ADC). This device operates from a single 2.7 V to 5.25 V power supply and is designed for high-throughput applications, offering sampling rates up to 200 kSPS. It features a low noise, wide bandwidth track-and-hold amplifier and supports SPI, QSPI, MICROWIRE, and DSP-compatible serial interfaces. The AD7923BRU is particularly suited for applications requiring rapid signal processing and multiple input channels, making it versatile in various industrial and embedded systems environments.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12-bit |
| Number of Inputs | 4 single-ended |
| Sampling Rate | Up to 200 kSPS |
| Voltage Supply (Analog/Digital) | 2.7 V to 5.25 V |
| Operating Temperature Range | -40°C to +125°C |
| Package Type | 16-lead TSSOP |
| Serial Interface Compatibility | SPI, QSPI, MICROWIRE, DSP |
| Conversion Time | As short as 800 ns with 20 MHz SCLK |
| Power Consumption (Max) | 1.2 mA @ 3 V, 1.5 mA @ 5 V |
| Shutdown Current | 0.5 μA max |
Key Features
- High throughput with low power consumption, achieving up to 200 kSPS with minimal power dissipation.
- Four single-ended analog inputs with a channel sequencer for sequential conversion.
- Single-supply operation with VDRIVE function, allowing the serial interface to connect directly to either 3 V or 5 V processor systems independent of AVDD.
- Flexible power and serial clock speed management, enabling the reduction of conversion time through increased serial clock speed.
- No pipeline delays, ensuring accurate control of the sampling instant via the CS input.
- High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP systems.
- Low noise, wide bandwidth track-and-hold amplifier capable of handling input frequencies over 8 MHz.
Applications
- Embedded systems: Suitable for real-time data acquisition and processing in embedded environments.
- Data acquisition: Ideal for applications requiring multiple input channels and high-speed sampling.
- Medical instrumentation: Reliable performance across a broad temperature range makes it suitable for medical devices.
- Industrial control: Used in various industrial control systems due to its high-speed sampling and low power consumption.
Q & A
- What is the resolution of the AD7923BRU ADC?
The AD7923BRU has a 12-bit resolution. - What is the maximum sampling rate of the AD7923BRU?
The maximum sampling rate is up to 200 kSPS. - How many analog input channels does the AD7923BRU have?
The AD7923BRU has four single-ended analog input channels. - What is the operating voltage range of the AD7923BRU?
The operating voltage range is from 2.7 V to 5.25 V. - What is the package type of the AD7923BRU?
The package type is a 16-lead TSSOP. - Is the AD7923BRU compatible with SPI and DSP interfaces?
Yes, it is compatible with SPI, QSPI, MICROWIRE, and DSP interfaces. - What is the minimum conversion time of the AD7923BRU?
The conversion time can be as short as 800 ns with a 20 MHz SCLK. - What is the maximum power consumption of the AD7923BRU at maximum throughput rates?
The maximum power consumption is 1.2 mA at 3 V and 1.5 mA at 5 V. - What is the shutdown current of the AD7923BRU?
The shutdown current is 0.5 μA maximum. - In what temperature range can the AD7923BRU operate?
The operating temperature range is from -40°C to +125°C.
