Overview
The AD7708BRU is a 16-bit, low voltage, low power analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD7708/AD7718 family, which offers high-resolution ADCs suitable for low-frequency measurement applications. The AD7708BRU is housed in a 28-lead TSSOP package and operates from a single 3 V or 5 V supply, making it versatile for various system designs.
Key Specifications
| Parameter | Value | Unit | Test Conditions |
|---|---|---|---|
| Resolution | 16 bits | - | - |
| Number of Channels | 8/10 | - | - |
| Sampling Rate | 1.365 ksps | - | - |
| Input Range | ±2.56 V | V | - |
| Supply Voltage | 2.7 V to 5.25 V | V | - |
| Power Dissipation (at 3 V) | 3.84 mW (typ) | mW | - |
| Operating Temperature | –40°C to +85°C | °C | - |
| Package | 28-TSSOP | - | - |
Key Features
- High-resolution 16-bit Σ-Δ ADC with programmable gain front end.
- 8/10 pseudo-differential or 4/5 fully-differential input channels.
- Simultaneous 50 Hz and 60 Hz rejection.
- Factory-calibrated single conversion cycle setting.
- On-board PLL generating the required internal operating frequency from a 32 kHz crystal.
- Software programmable output data rate.
- Low power consumption, with 3.84 mW typical at 3 V supply.
- Pin-for-pin compatibility with the 24-bit AD7718, allowing for easy upgrade without hardware modifications.
Applications
The AD7708BRU is designed for low-frequency measurement applications, making it suitable for various industrial and medical devices. Some common applications include:
- Industrial process control systems.
- Medical devices such as patient monitoring systems.
- Automotive sensors and control systems.
- Environmental monitoring equipment.
Q & A
- What is the resolution of the AD7708BRU?
The AD7708BRU has a 16-bit resolution.
- How many input channels does the AD7708BRU support?
The AD7708BRU supports 8/10 pseudo-differential or 4/5 fully-differential input channels.
- What is the sampling rate of the AD7708BRU?
The sampling rate of the AD7708BRU is 1.365 ksps.
- What is the input range of the AD7708BRU?
The input range of the AD7708BRU is ±2.56 V.
- What are the supply voltage options for the AD7708BRU?
The AD7708BRU operates from a single 2.7 V to 5.25 V supply.
- What is the typical power dissipation of the AD7708BRU at 3 V supply?
The typical power dissipation at 3 V supply is 3.84 mW.
- What is the operating temperature range of the AD7708BRU?
The operating temperature range is –40°C to +85°C.
- What package type is the AD7708BRU available in?
The AD7708BRU is available in a 28-TSSOP package.
- Does the AD7708BRU support simultaneous 50 Hz and 60 Hz rejection?
Yes, the AD7708BRU supports simultaneous 50 Hz and 60 Hz rejection.
- Is the AD7708BRU pin-for-pin compatible with other models?
Yes, the AD7708BRU is pin-for-pin compatible with the 24-bit AD7718.
