Overview
The AD7707BRUZ-REEL7, produced by Analog Devices Inc., is a comprehensive analog-to-digital converter (ADC) 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, converting them into a serial digital output. It employs a Σ-Δ (Sigma-Delta) conversion technique to achieve up to 16 bits of no missing codes performance. The AD7707 is ideal for use in smart systems, microcontrollers, or DSP-based systems due to its low power consumption and versatile input capabilities.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 20-Lead TSSOP (Thin Shrink Small Outline Package) |
| Number of Channels | 3 |
| Number of Bits | 16 |
| Sampling Rate | Up to 500 sps (samples per second) |
| Polarity | Bipolar, Unipolar |
| Interface | SPI, QSPI™, MICROWIRE™, and DSP compatible |
| Supply Voltage | 2.7 V to 3.3 V or 4.75 V to 5.25 V |
| Operating Temperature Range | -40°C to +85°C |
| Power Dissipation | Less than 1 mW at 3 V supply and 1 MHz master clock |
| Standby Current | Less than 8 μA |
Key Features
- Programmable Gain Front End: The AD7707 features a proprietary programmable gain front end based around an analog modulator, allowing for gains from 1 to 128.
- Low Power Consumption: Consumes less than 1 mW at 3 V supplies and 1 MHz master clock, with a standby current of less than 8 μA.
- High-Level Input Capability: Can accommodate high-level input signals of ±10 V, ±5 V, 0 V to 10 V, and 0 V to 5 V without requiring split supplies or charge-pumps.
- Low-Level Input Channels: Accepts input signals directly from transducers or strain gages, reducing the need for additional signal conditioning.
- On-Chip Calibration: Includes self-calibration and system calibration options to eliminate gain and offset errors.
- Digital Filter: The first notch of the digital filter can be programmed via an on-chip control register, allowing adjustment of the filter cutoff and output update rate.
Applications
- Smart Systems: Ideal for use in smart systems due to its low power consumption and compact packaging.
- Microcontroller or DSP-Based Systems: Suitable for integration with microcontrollers or DSPs due to its serial interface compatibility.
- Industrial Automation: Used in industrial automation for precise measurement and control applications.
- Medical Devices: Applied in medical devices requiring accurate and low-noise analog-to-digital conversion.
- Test and Measurement Equipment: Utilized in various test and measurement equipment for its high accuracy and reliability.
Q & A
- What is the AD7707BRUZ-REEL7 used for?
The AD7707BRUZ-REEL7 is a 3-channel analog-to-digital converter used for low-frequency measurement applications, converting analog signals into digital outputs.
- What are the input signal ranges for the AD7707BRUZ-REEL7?
The device can handle input signal ranges from 0 mV to 20 mV and bipolar ranges of ±20 mV through ±2.5 V on low-level channels, and ±10 V on the high-level channel.
- What is the power consumption of the AD7707BRUZ-REEL7?
The device consumes less than 1 mW at 3 V supply and 1 MHz master clock, with a standby current of less than 8 μA.
- What types of packages are available for the AD7707BRUZ-REEL7?
The AD7707 is available in 20-Lead TSSOP (Thin Shrink Small Outline Package) and 20-Lead SOIC (Small Outline Integrated Circuit) packages.
- Can the AD7707BRUZ-REEL7 be used in high-temperature environments?
Yes, the device operates within a temperature range of -40°C to +85°C.
- How does the AD7707BRUZ-REEL7 handle calibration?
The device includes self-calibration and system calibration options to eliminate gain and offset errors.
- What is the sampling rate of the AD7707BRUZ-REEL7?
The sampling rate can be up to 500 sps (samples per second).
- Is the AD7707BRUZ-REEL7 compatible with microcontrollers and DSPs?
Yes, it features a serial interface compatible with SPI, QSPI™, MICROWIRE™, and DSP.
- What are the key benefits of using the AD7707BRUZ-REEL7 in low-power systems?
The device offers low power consumption, making it ideal for battery-powered or energy-efficient systems.
- Can the AD7707BRUZ-REEL7 handle high-level input signals directly?
Yes, it can accommodate high-level input signals without requiring additional circuitry like split supplies or charge-pumps.
