Overview
The AD7707BRZ, produced by Analog Devices Inc., is a comprehensive analog front end designed for low-frequency measurement applications. This 3-channel device is capable of accepting both low-level input signals directly from transducers and high-level signals, producing a serial digital output. It utilizes a Σ-Δ conversion technique to achieve up to 16 bits of no missing codes performance. The AD7707 is ideal for use in smart, microcontroller, or DSP-based systems, featuring a serial interface that can be configured for 3-wire operation. It includes self-calibration and system calibration options to eliminate gain and offset errors.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 20-Lead SOIC (Wide) |
| Supply Voltage | 2.7 V to 3.3 V or 4.75 V to 5.25 V |
| Input Channels | 2 low-level pseudo differential, 1 high-level |
| Input Signal Ranges (Low-Level) | 0 mV to 20 mV, 0 V to 2.5 V, ±20 mV to ±2.5 V |
| Input Signal Ranges (High-Level) | ±10 V, ±5 V, 0 V to 10 V, 0 V to 5 V |
| Resolution | Up to 16 bits |
| Interface | Serial, configurable for 3-wire operation |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- Programmable gain front end based on an analog modulator
- On-chip digital filter with programmable notch frequency
- Self-calibration and system calibration options
- Software-configurable gain settings, signal polarity, and update rate
- Differential reference input
- Compatible with microcontroller or DSP-based systems
Applications
The AD7707BRZ is suitable for various low-frequency measurement applications, including industrial process control, medical devices, and smart sensor systems. It is particularly useful in environments where precise signal conditioning and conversion are required, such as in transducer interfaces and data acquisition systems.
Q & A
- What is the primary function of the AD7707BRZ?
The AD7707BRZ is a complete analog front end for low-frequency measurement applications, converting analog input signals to a serial digital output.
- What are the input signal ranges for the low-level channels?
The low-level channels can accommodate input signal ranges of 0 mV to 20 mV, 0 V to 2.5 V, and bipolar ranges of ±20 mV to ±2.5 V.
- What are the input signal ranges for the high-level channel?
The high-level channel can accept input signal ranges of ±10 V, ±5 V, 0 V to 10 V, and 0 V to 5 V.
- What is the resolution of the AD7707BRZ?
The AD7707BRZ achieves up to 16 bits of no missing codes performance.
- What types of calibration does the AD7707BRZ support?
The AD7707BRZ supports self-calibration and system calibration to eliminate gain and offset errors.
- What is the operating supply voltage range for the AD7707BRZ?
The operating supply voltage range is 2.7 V to 3.3 V or 4.75 V to 5.25 V.
- What is the package type of the AD7707BRZ?
The AD7707BRZ is available in a 20-Lead SOIC (Wide) package.
- Can the AD7707BRZ be used in microcontroller or DSP-based systems?
- How is the interface of the AD7707BRZ configured?
The interface can be configured for 3-wire operation and is serial in nature.
- What is the operating temperature range of the AD7707BRZ?
The operating temperature range is -40°C to 85°C.
