Overview
The AD7715AR-3REEL is a 16-bit, sigma-delta analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed as a complete analog front end for low-frequency measurement applications. It can accept low-level input signals directly from transducers and outputs a serial digital word. The AD7715 employs a sigma-delta conversion technique to achieve up to 16 bits of no missing codes performance. It operates from a single supply voltage of 3 V or 5 V and is ideal for use in smart, microcontroller, or DSP-based systems.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Supply Voltage | 3 V or 5 V |
| Supply Current | Less than 450 μA at 3 V supplies |
| Standby Current | Less than 10 μA |
| 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 |
| Package Types | 16-lead SOIC, PDIP, TSSOP |
| Operating Temperature | −40°C to +85°C |
| Interface | Three-wire serial interface |
Key Features
- Programmable gain input allowing direct connection to transducers or strain gages.
- Low power consumption with a maximum supply current of 450 μA at 3 V supplies.
- Low-pass filter with programmable output update rate.
- Differential analog input and differential reference input.
- Self-calibration and system calibration options to eliminate gain and offset errors.
- CMOS construction ensuring very low power dissipation.
- Power-down mode reducing standby power consumption to 50 μW typical.
Applications
The AD7715AR-3REEL is ideal for various low-frequency measurement applications, including:
- Smart systems
- Microcontroller-based systems
- DSP-based systems
- Industrial automation
- Medical devices
- Test and measurement equipment
Q & A
- What is the resolution of the AD7715AR-3REEL ADC?
The AD7715AR-3REEL has a resolution of 16 bits.
- What are the supply voltage options for the AD7715AR-3REEL?
The AD7715AR-3REEL operates from a single supply voltage of 3 V or 5 V.
- What is the maximum supply current of the AD7715AR-3REEL at 3 V supplies?
The maximum supply current is less than 450 μA at 3 V supplies.
- What types of input signal ranges can the AD7715AR-3REEL handle?
The AD7715AR-3REEL can handle unipolar and bipolar input signal ranges, including 0 mV to 20 mV, 0 mV to 80 mV, 0 V to 1.25 V, 0 V to 2.5 V, and their bipolar equivalents.
- What package types are available for the AD7715AR-3REEL?
The AD7715AR-3REEL is available in 16-lead SOIC, PDIP, and TSSOP packages.
- What is the operating temperature range of the AD7715AR-3REEL?
The operating temperature range is −40°C to +85°C.
- Does the AD7715AR-3REEL support self-calibration?
Yes, the AD7715AR-3REEL supports self-calibration and system calibration options to eliminate gain and offset errors.
- How does the AD7715AR-3REEL reduce power consumption?
The AD7715AR-3REEL reduces power consumption through CMOS construction and a power-down mode that reduces standby power to 50 μW typical.
- What type of interface does the AD7715AR-3REEL use?
The AD7715AR-3REEL uses a three-wire serial interface.
- Is the AD7715AR-3REEL suitable for low-power systems?
Yes, the AD7715AR-3REEL is suitable for low-power systems due to its low supply current and power-down mode.
