Overview
The AD7715ARUZ-5, produced by Analog Devices Inc., is a comprehensive analog front end designed for low-frequency measurement applications. This 16-bit Sigma-Delta Analog-to-Digital Converter (ADC) is capable of accepting low-level input signals directly from transducers and converting them into a serial digital word. It employs a proprietary programmable gain front end and a Σ-Δ conversion technique, ensuring up to 16 bits of no missing codes performance. The device operates from a single 5V supply and features a differential analog input as well as a differential reference input, making it ideal for use in smart, microcontroller, or DSP-based systems.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Supply Voltage | 5 V (nominal) |
| Supply Current | 450 µA (maximum) |
| 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 Types | 16-Lead TSSOP, 16-Lead SOIC Wide, 16-Lead PDIP |
| Operating Temperature Range | −40°C to +85°C |
| Interface | Serial interface (three-wire operation) |
| Power-Down Mode | 50 μW (typical) |
Key Features
- Programmable gain front end with gain settings from 1 to 128
- Σ-Δ conversion technique for high accuracy and low noise
- On-chip digital filter with programmable cutoff and output update rate
- Differential analog and reference inputs
- Low power consumption with a maximum supply current of 450 µA
- Self-calibration and system calibration options to eliminate gain and offset errors
- CMOS construction for low power dissipation
- Three-wire serial interface for software configuration of gain settings, signal polarity, and update rate
Applications
- Low-frequency measurement applications
- Smart systems
- Microcontroller-based systems
- DSP-based systems
- Transducer signal conditioning and conversion
Q & A
- What is the resolution of the AD7715ARUZ-5?
The AD7715ARUZ-5 has a resolution of 16 bits.
- What are the input signal ranges supported by the AD7715ARUZ-5?
The device 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 ranges of ±20 mV, ±80 mV, ±1.25 V, and ±2.5 V.
- What is the supply voltage and current of the AD7715ARUZ-5?
The device operates from a single 5V supply and has a maximum supply current of 450 µA.
- What types of packages are available for the AD7715ARUZ-5?
The device is available in 16-Lead TSSOP, 16-Lead SOIC Wide, and 16-Lead PDIP packages.
- What is the operating temperature range of the AD7715ARUZ-5?
The operating temperature range is −40°C to +85°C.
- Does the AD7715ARUZ-5 support self-calibration and system calibration?
Yes, the device supports self-calibration and system calibration options to eliminate gain and offset errors.
- How does the AD7715ARUZ-5 manage power consumption?
The device features low power consumption with CMOS construction and a power-down mode that reduces standby power to 50 μW typical.
- What type of interface does the AD7715ARUZ-5 use?
The device uses a serial interface that can be configured for three-wire operation.
- Can the gain settings and update rate of the AD7715ARUZ-5 be configured in software?
Yes, gain settings, signal polarity, and update rate can be configured in software using the input serial port.
- What is the purpose of the on-chip digital filter in the AD7715ARUZ-5?
The on-chip digital filter allows for the programming of the filter cutoff and output update rate, enhancing the device's flexibility and performance.
