Overview
The AD7707BRZ-REEL, 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
| Parameter | Value |
|---|---|
| Package | 20-Lead SOIC and TSSOP |
| Supply Voltage | 2.7 V to 3.3 V or 4.75 V to 5.25 V |
| Number of Analog Input Channels | 3 |
| Resolution | 16 bits |
| Sampling Rate | Up to 500 sps |
| Polarity | Bipolar, Unipolar |
| Interface | SPI, QSPI™, MICROWIRE™, and DSP compatible |
| Power Dissipation | < 1 mW at 3 V |
| Standby Current | < 8 μA |
| Input Signal Ranges | Low level: 0 mV to 20 mV, ±20 mV to ±2.5 V; High level: ±10 V, ±5 V, 0 V to 10 V, 0 V to 5 V |
Key Features
- Programmable gain front end with gains from 1 to 128.
- On-chip thin-film resistors allowing direct accommodation of high-level input signals without split supplies or charge-pumps.
- Ability to buffer the analog input.
- Excellent static performance specifications with 16 bits, no missing codes, ±0.003% accuracy, and low rms noise.
- On-chip calibration options to remove zero-scale and full-scale errors.
- Low power consumption: less than 1 mW at 3 V supplies and 1 MHz master clock.
- Standby current less than 8 μA.
Applications
The AD7707BRZ-REEL is ideal for use in various applications, including:
- Industrial automation.
- IoT systems.
- Smart systems and microcontroller or DSP-based systems.
- Low-frequency measurement applications such as those involving strain gages or transducers.
Q & A
- What is the resolution of the AD7707BRZ-REEL?
The AD7707BRZ-REEL has a resolution of 16 bits.
- What are the supply voltage ranges for the AD7707BRZ-REEL?
The supply voltage ranges are 2.7 V to 3.3 V or 4.75 V to 5.25 V.
- How many analog input channels does the AD7707BRZ-REEL have?
The AD7707BRZ-REEL has three analog input channels.
- What is the maximum sampling rate of the AD7707BRZ-REEL?
The maximum sampling rate is up to 500 sps.
- What interfaces are supported by the AD7707BRZ-REEL?
The device supports SPI, QSPI™, MICROWIRE™, and DSP compatible interfaces.
- What are the input signal ranges for the AD7707BRZ-REEL?
The input signal ranges include low-level signals from 0 mV to 20 mV and ±20 mV to ±2.5 V, and high-level signals from ±10 V, ±5 V, 0 V to 10 V, and 0 V to 5 V.
- How much power does the AD7707BRZ-REEL consume?
The device consumes less than 1 mW at 3 V supplies and 1 MHz master clock.
- What is the standby current of the AD7707BRZ-REEL?
The standby current is less than 8 μA.
- What kind of calibration does the AD7707BRZ-REEL support?
The device supports on-chip calibration options to remove zero-scale and full-scale errors.
- In what packages is the AD7707BRZ-REEL available?
The device is available in 20-lead SOIC and TSSOP packages.
- Is the AD7707BRZ-REEL still in production?
No, the AD7707BRZ-REEL is obsolete and no longer manufactured.
