Overview
The AD7707BRU-REEL7, 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 employs a Σ-Δ (Sigma-Delta) conversion technique to achieve up to 16 bits of no missing codes performance. The AD7707 operates from a single supply voltage ranging from 2.7 V to 5.25 V, making it versatile for various power requirements.
Key Specifications
| Specification | Value |
|---|---|
| Supply Voltage | 2.7 V to 5.25 V |
| Number of Bits | 16 bits |
| Input Channels | 3 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; High level: ±10 V, ±5 V, 0 V to 10 V, 0 V to 5 V |
| Power Dissipation | Less than 1 mW at 3 V |
| Standby Current | Less than 8 μA |
| Package Type | 20-lead SOIC and TSSOP |
| Operating Temperature | -40°C to +85°C |
| Interface | 3-wire serial interface (SPI, QSPI, MICROWIRE, DSP compatible) |
Key Features
- Programmable Gain Front End: The AD7707 features a proprietary programmable gain front end, allowing for gains from 1 to 128.
- High Accuracy: The device offers excellent static performance with ±0.003% accuracy and low rms noise.
- On-Chip Calibration: On-chip calibration options eliminate zero-scale and full-scale errors, as well as endpoint errors and temperature drift effects.
- Low Power Consumption: It consumes less than 1 mW at 3 V supplies and has a standby current of less than 8 μA.
- Flexible Input Handling: The device can handle both low-level and high-level input signals without requiring split supplies or charge-pumps.
- Digital Filter: The on-chip digital filter allows for programmable filter cutoff and output update rate.
Applications
- Industrial Automation: Suitable for various industrial measurement applications, including those involving strain gauges and transducers.
- Medical Devices: Can be used in medical devices requiring precise and low-noise analog-to-digital conversion.
- Smart Sensors: Ideal for smart sensor applications where low power consumption and high accuracy are critical.
- Microcontroller and DSP Systems: Compatible with microcontroller and DSP systems, enhancing their analog measurement capabilities.
Q & A
- What is the supply voltage range of the AD7707BRU-REEL7?
The supply voltage range is from 2.7 V to 5.25 V.
- How many input channels does the AD7707BRU-REEL7 have?
The device has 3 input channels: 2 low-level pseudo-differential channels and 1 high-level channel.
- What are the input signal ranges for the AD7707BRU-REEL7?
The low-level channels can handle signals from 0 mV to 20 mV and 0 V to 2.5 V, while the high-level channel can handle ±10 V, ±5 V, 0 V to 10 V, and 0 V to 5 V.
- What is the power consumption of the AD7707BRU-REEL7?
The device consumes less than 1 mW at 3 V supplies.
- What is the standby current of the AD7707BRU-REEL7?
The standby current is less than 8 μA.
- What type of interface does the AD7707BRU-REEL7 use?
The device uses a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- What is the accuracy of the AD7707BRU-REEL7?
The device offers an accuracy of ±0.003%.
- Does the AD7707BRU-REEL7 require external calibration?
No, the device features on-chip calibration options that eliminate zero-scale and full-scale errors.
- What are the typical applications of the AD7707BRU-REEL7?
It is suitable for industrial automation, medical devices, smart sensors, and microcontroller/DSP systems.
- What are the package options for the AD7707BRU-REEL7?
The device is available in 20-lead SOIC and TSSOP packages.
