Overview
The AD7908BRUZ from Analog Devices Inc. is an 8-bit, high-speed, low-power, successive approximation analog-to-digital converter (ADC). This component is part of the AD7908/AD7918/AD7928 family and is designed for applications requiring high accuracy and low power consumption. It operates from a single 2.7 V to 5.25 V power supply and features a throughput rate of up to 1 MSPS. The device is packaged in a 20-lead TSSOP and is qualified for automotive applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8-bit |
| Number of Analog Input Channels | 8 |
| Sampling Rate | Up to 1 MSPS |
| Power Supply Voltage | 2.7 V to 5.25 V |
| Package Type | 20-TSSOP (0.173", 4.40mm Width) |
| Output Format | SERIAL (SPI compatible) |
| Signal to Noise Ratio (SNR) | 70 dB min at 50 kHz input frequency |
| Operating Temperature Range | -40°C to +85°C |
| Power Consumption | 2 mA max at 3 V, 2.7 mA max at 5 V |
| Shutdown Current | 0.5 μA max |
Key Features
- High-speed successive approximation ADC with up to 1 MSPS throughput rate.
- Low power consumption: 2 mA max at 3 V and 2.7 mA max at 5 V.
- Wide input bandwidth with a track-and-hold amplifier capable of handling input frequencies in excess of 8 MHz.
- Flexible power and serial clock speed management.
- No pipeline delays, allowing for real-time conversion results.
- High-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- Shutdown mode with a maximum current of 0.5 μA.
- Channel sequencer allowing preprogrammed selection of channels to be converted sequentially.
- Analog input range selectable as 0 V to REFIN or 0 V to 2 × REFIN with straight binary or twos complement output coding.
Applications
- Automotive systems: Qualified for automotive applications, making it suitable for various automotive sensors and control systems.
- Industrial automation: Used in industrial control systems, sensors, and data acquisition systems due to its high accuracy and reliability.
- Medical devices: Suitable for medical equipment requiring precise and low-power ADCs, such as patient monitoring systems and diagnostic devices.
- Consumer electronics: Applied in consumer devices that require high-speed and low-power data conversion, such as audio and video equipment.
- Embedded systems: Ideal for embedded systems that need efficient and accurate analog-to-digital conversion.
Q & A
- What is the resolution of the AD7908BRUZ ADC?
The AD7908BRUZ is an 8-bit ADC.
- How many analog input channels does the AD7908BRUZ have?
The AD7908BRUZ has 8 single-ended analog input channels.
- What is the maximum sampling rate of the AD7908BRUZ?
The maximum sampling rate is up to 1 MSPS.
- What is the power supply voltage range for the AD7908BRUZ?
The power supply voltage range is from 2.7 V to 5.25 V.
- What type of output format does the AD7908BRUZ use?
The output format is serial, compatible with SPI, QSPI, MICROWIRE, and DSP.
- What is the operating temperature range of the AD7908BRUZ?
The operating temperature range is -40°C to +85°C.
- How much power does the AD7908BRUZ consume at maximum throughput rates?
At maximum throughput rates, the AD7908BRUZ consumes 2 mA max with 3 V supplies and 2.7 mA max with 5 V supplies.
- Does the AD7908BRUZ have any pipeline delays?
No, there are no pipeline delays associated with the AD7908BRUZ.
- What is the shutdown current of the AD7908BRUZ?
The shutdown current is 0.5 μA max.
- Is the AD7908BRUZ qualified for automotive applications?
Yes, the AD7908BRUZ is qualified for automotive applications.
