Overview
The AD7715AN-3 is a high-precision, 16-bit sigma-delta analog-to-digital converter (ADC) produced by Analog Devices Inc. This integrated circuit is designed for low-frequency measurement applications and serves as a complete analog front end. It can accept low-level input signals directly from transducers and outputs a serial digital word. The AD7715AN-3 operates from a single supply voltage of 3 V or 5 V, making it versatile for various system designs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Package / Case | 16-Lead Plastic Dual In-Line Package (PDIP), 16-Lead SOIC, 16-Lead TSSOP |
| Operating Temperature | -40°C to +85°C |
| Supply Voltage | 3 V ~ 3.6 V (Analog), 3 V ~ 5.25 V (Digital) |
| Number of Bits | 16 |
| Sampling Rate | Up to 500 samples per second |
| Data Interface | SPI, DSP |
| Input Type | Differential |
| 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; Bipolar: ±20 mV, ±80 mV, ±1.25 V, ±2.5 V |
| Power Consumption | Less than 450 μA at 3 V supplies |
| Standby Current | Less than 10 μA |
Key Features
- Programmable gain amplifier allowing direct connection to transducers like strain gages.
- Low-pass filter with programmable output update rate.
- Differential analog and reference inputs.
- Self-calibration and system calibration options to eliminate gain and offset errors.
- Low power consumption with a power-down mode reducing standby power to 50 μW typical.
- Three-wire serial interface compatible with microcontrollers and DSPs.
- Internal buffer and reference for ease of use.
- High noise performance with a signal-to-noise ratio of 85 dB min @ 10 Hz.
Applications
- Weight scales and portable instrumentation.
- Data acquisition systems.
- Industrial control systems.
- Battery-powered systems.
- Smart, microcontroller, or DSP-based systems.
Q & A
- What is the AD7715AN-3? The AD7715AN-3 is a 16-bit sigma-delta analog-to-digital converter (ADC) designed for low-frequency measurement applications.
- What are the operating voltage ranges for the AD7715AN-3? The AD7715AN-3 operates from a single supply voltage of 3 V or 5 V.
- What types of packages are available for the AD7715AN-3? The AD7715AN-3 is available in 16-Lead PDIP, 16-Lead SOIC, and 16-Lead TSSOP packages.
- What is the maximum sampling rate of the AD7715AN-3? The maximum sampling rate is up to 500 samples per second.
- Does the AD7715AN-3 support self-calibration? Yes, the AD7715AN-3 supports self-calibration and system calibration options.
- What is the power consumption of the AD7715AN-3? The AD7715AN-3 consumes less than 450 μA at 3 V supplies.
- What are the typical standby current and power consumption? The standby current is less than 10 μA, and the standby power consumption is 50 μW typical.
- Is the AD7715AN-3 compatible with microcontrollers and DSPs? Yes, it features a three-wire serial interface compatible with microcontrollers and DSPs.
- What are the common applications of the AD7715AN-3? Common applications include weight scales, portable instrumentation, data acquisition systems, industrial control systems, and battery-powered systems.
- Does the AD7715AN-3 comply with environmental regulations? Yes, it complies with RoHS directives and is sustainably produced.
