Overview
The AD7715ARUZ-3REEL7, produced by Analog Devices Inc., is a 16-bit Sigma-Delta Analog-to-Digital Converter (ADC) designed for low frequency measurement applications. This component serves as a complete analog front end, capable of accepting low-level input signals directly from transducers and outputting a serial digital word. It employs a Sigma-Delta (Σ-Δ) conversion technique to achieve up to 16 bits of no missing codes performance. The AD7715 operates from a single supply voltage of either 3 V or 5 V and features a programmable gain front end and an on-chip digital filter, which can be configured via the on-chip control register to adjust the filter cutoff and output update rate.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Conversion Technique | Sigma-Delta (Σ-Δ) |
| Supply Voltage | 3 V or 5 V |
| Supply Current | 450 µA maximum @ 3 V supplies |
| Input Signal Ranges (Unipolar) | 0 mV to 20 mV, 0 mV to 80 mV, 0 V to 1.25 V, 0 V to 2.5 V |
| Input Signal Ranges (Bipolar) | ±20 mV, ±80 mV, ±1.25 V, ±2.5 V |
| Package Type | 16-Lead TSSOP |
| Operating Temperature Range | -40°C to +85°C |
| Power-Down Mode | 50 μW typical standby power consumption |
Key Features
- Differential analog input and differential reference input
- Programmable gain front end and on-chip digital filter
- Self-calibration and system calibration options to eliminate gain and offset errors
- Serial interface configurable for three-wire operation
- Low power dissipation with CMOS construction
- Power-down mode for reduced standby power consumption
Applications
The AD7715 is ideal for use in smart, microcontroller, or DSP-based systems. It is particularly suited for low frequency measurement applications such as those found in industrial control systems, medical devices, and data acquisition systems. The component's ability to handle low-level input signals directly from transducers makes it a versatile choice for various measurement and monitoring applications.
Q & A
- What is the resolution of the AD7715 ADC?
The AD7715 has a resolution of 16 bits.
- What are the supply voltage options for the AD7715?
The AD7715 can operate from a single supply voltage of either 3 V or 5 V.
- What are the input signal ranges supported by the AD7715?
The AD7715 supports unipolar input signal ranges of 0 mV to 20 mV, 0 mV to 80 mV, 0 V to 1.25 V, and 0 V to 2.5 V, as well as bipolar input signal ranges of ±20 mV, ±80 mV, ±1.25 V, and ±2.5 V.
- What type of package is the AD7715 available in?
The AD7715 is available in a 16-Lead TSSOP package.
- What is the operating temperature range of the AD7715?
The operating temperature range of the AD7715 is -40°C to +85°C.
- Does the AD7715 support power-down mode?
Yes, the AD7715 has a power-down mode that reduces the standby power consumption to 50 μW typical.
- How can the gain settings and update rate be configured on the AD7715?
The gain settings, signal polarity, and update rate selection can be configured in software using the input serial port.
- What type of digital filter does the AD7715 employ?
The AD7715 employs an on-chip digital filter with a programmable output update rate.
- Is the AD7715 suitable for use in microcontroller or DSP-based systems?
Yes, the AD7715 is ideal for use in smart, microcontroller, or DSP-based systems.
- Does the AD7715 support self-calibration and system calibration?
Yes, the AD7715 supports self-calibration and system calibration options to eliminate gain and offset errors.
