Overview
The AD7705BRZ-REEL7, produced by Analog Devices Inc., is a 16-bit, low-cost, Sigma-Delta Analog-to-Digital Converter (ADC) designed for DC and low-frequency AC measurement applications. This device is part of the AD7705 and AD7706 family, which are complete analog front ends that can accept low-level input signals directly from transducers and produce serial digital output. The AD7705BRZ-REEL7 operates with very low power consumption, making it suitable for loop-powered, battery-powered, or locally-powered systems.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Number of Channels | 2 differential channels |
| Supply Voltage | 2.7 V to 3.3 V or 4.75 V to 5.25 V |
| Power Consumption | 1 mW max @ 3 V |
| Input Signal Range | 0 mV to 20 mV, 0 V to 2.5 V, ±20 mV through ±2.5 V |
| Programmable Gain Amplifier | Gains from 1 to 128 |
| Differential Reference Input | Yes |
| Package Type | 16-Lead SOIC Wide |
| Standby Power Consumption | 20 μW typ |
Key Features
- Low power consumption (1 mW max @ 3 V) suitable for battery-powered or locally-powered applications.
- On-chip Programmable Gain Amplifier with gain settings from 1 to 128, accommodating both low-level and high-level analog inputs.
- Differential reference inputs for maximum flexibility in ratiometric applications.
- Self-calibration and system calibration options to eliminate gain and offset errors.
- CMOS construction ensuring very low power dissipation.
- Serial interface configurable for 3-wire operation.
- Support for software configuration of gain settings, signal polarity, and update rate selection.
Applications
The AD7705BRZ-REEL7 is ideal for use in various measurement and control systems, including:
- Smart systems and IoT devices.
- Microcontroller or DSP-based systems.
- Industrial automation and control systems.
- Medical devices requiring precise low-frequency measurements.
- Environmental monitoring and sensing applications.
Q & A
- What is the resolution of the AD7705BRZ-REEL7?
The AD7705BRZ-REEL7 has a resolution of 16 bits.
- How many channels does the AD7705BRZ-REEL7 have?
The AD7705BRZ-REEL7 has two differential analog input channels.
- What is the power consumption of the AD7705BRZ-REEL7?
The power consumption is 1 mW max at 3 V supply voltage.
- What are the input signal ranges supported by the AD7705BRZ-REEL7?
The device supports input signal ranges from 0 mV to 20 mV, 0 V to 2.5 V, and bipolar ranges of ±20 mV through ±2.5 V.
- Does the AD7705BRZ-REEL7 have a programmable gain amplifier?
Yes, it has an on-chip Programmable Gain Amplifier with gain settings from 1 to 128.
- What type of package does the AD7705BRZ-REEL7 come in?
The AD7705BRZ-REEL7 comes in a 16-Lead SOIC Wide package.
- Can the AD7705BRZ-REEL7 be configured via software?
Yes, gain settings, signal polarity, and update rate selection can be configured in software using the input serial port.
- Does the AD7705BRZ-REEL7 support self-calibration and system calibration?
Yes, it supports self-calibration and system calibration options to eliminate gain and offset errors.
- What is the standby power consumption of the AD7705BRZ-REEL7?
The standby power consumption is 20 μW typical.
- In what types of systems is the AD7705BRZ-REEL7 commonly used?
The AD7705BRZ-REEL7 is commonly used in smart systems, microcontroller or DSP-based systems, industrial automation, medical devices, and environmental monitoring applications.
