Overview
The AD7715ARU-3REEL is a high-precision analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This integrated circuit is designed for low-frequency measurement applications and serves as a complete analog front end. It features a 16-bit sigma-delta conversion technique, ensuring up to 16 bits of no missing codes performance. The AD7715ARU-3REEL operates from a single supply of either 3 V or 5 V and is suitable for systems requiring low power consumption and high accuracy.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | ||
| Part Number | AD7715ARU-3REEL | ||
| Number of Bits | 16 | ||
| Architecture | Sigma-Delta | ||
| Input Type | Differential | ||
| Input Voltage Range | Unipolar: 0 mV to 20 mV, 0 mV to 80 mV, 0 V to 1.25 V, 0 V to 2.5 V; Bipolar: ±20 mV, ±80 mV, ±1.25 V, ±2.5 V | Referenced to the negative input of the differential analog input | |
| Supply Voltage | 3 V ~ 3.6 V (Analog), 3 V ~ 5.25 V (Digital) | V | |
| Supply Current | 450 μA (max @ 3 V supplies) | μA | |
| Standby Current | 50 μW (typical) | μW | Power-down mode |
| Update Rate | 50 Hz to 600 Hz | Hz | Programmable output update rate |
| Signal-to-Noise Ratio | 85 dB (min @ 10 Hz) | dB | |
| Package | 16-lead TSSOP (0.173", 4.40mm Width) | ||
| Operating Temperature | -40°C to +85°C | °C | Industrial temperature range |
Key Features
- High Precision Conversion: 16-bit sigma-delta ADC with up to 16 bits of no missing codes performance.
- Programmable Gain Amplifier: Allows direct connection to transducers, reducing the need for additional signal conditioning.
- Low Power Consumption: Maximum supply current of 450 μA at 3 V supplies and standby current of 50 μW in power-down mode.
- Flexible Supply Operation: Can operate from either 3 V or 5 V single supply.
- Programmable Output Update Rate: Adjustable via the on-chip control register.
- Differential Analog and Reference Inputs: Enhances noise rejection and signal integrity.
- Self-Calibration and System Calibration: Options to eliminate gain and offset errors.
- Serial Interface: Three-wire SPI and DSP-compatible interface for easy integration with microcontrollers or DSPs.
- Low Voltage Coefficient and High Noise Performance: Ensures long-term stability and performance consistency.
Applications
- Industrial Automation: Suitable for low-frequency measurement applications in industrial automation systems.
- Medical Devices: Ideal for medical devices requiring high precision and low power consumption.
- Smart Sensors and Transducers: Directly connects to strain gages, thermocouples, and other transducers.
- Microcontroller and DSP-Based Systems: Easy integration with microcontrollers and DSP processors due to its serial interface.
- Low-Power Systems: Perfect for battery-powered devices and other low-power applications.
Q & A
- What is the resolution of the AD7715ARU-3REEL ADC?
The AD7715ARU-3REEL has a 16-bit resolution.
- What are the supply voltage options for the AD7715ARU-3REEL?
The AD7715ARU-3REEL can operate from either 3 V or 5 V single supply.
- What is the maximum supply current of the AD7715ARU-3REEL at 3 V supplies?
The maximum supply current is 450 μA at 3 V supplies.
- What is the standby current in power-down mode?
The standby current is 50 μW in power-down mode.
- What types of input signals can the AD7715ARU-3REEL handle?
The AD7715ARU-3REEL can handle both unipolar and bipolar input signal ranges.
- What is the signal-to-noise ratio (SNR) of the AD7715ARU-3REEL?
The signal-to-noise ratio is 85 dB minimum at 10 Hz.
- What is the operating temperature range of the AD7715ARU-3REEL?
The operating temperature range is -40°C to +85°C.
- What package types are available for the AD7715ARU-3REEL?
The AD7715ARU-3REEL is available in a 16-lead TSSOP package.
- Does the AD7715ARU-3REEL support self-calibration and system calibration?
Yes, the AD7715ARU-3REEL supports both self-calibration and system calibration options.
- What type of interface does the AD7715ARU-3REEL use for communication?
The AD7715ARU-3REEL uses a three-wire SPI and DSP-compatible serial interface.
