Overview
The AD7707BRZ-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, converting them into a serial digital output. It employs a Σ-Δ conversion technique to achieve up to 16 bits of no missing codes performance. The AD7707 is ideal for use in smart systems, microcontroller-based systems, and DSP-based systems, offering a high degree of flexibility and precision in signal conditioning and conversion.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 20-Lead SOIC (Wide) and 20-Lead TSSOP |
| Number of Channels | 3 |
| Number of Pins | 20 |
| Resolution | Up to 16 bits, no missing codes |
| Supply Voltage | 2.7 V to 3.3 V or 4.75 V to 5.25 V |
| 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 |
| Sampling Rate | Up to 500 sps |
| Polarity | Bipolar, Unipolar |
| Interface | SPI, QSPI, MICROWIRE, DSP compatible |
| Power Dissipation | Less than 1 mW at 3 V supplies and 1 MHz master clock |
| Standby Current | Less than 8 μA |
Key Features
- Programmable gain front end with gains from 1 to 128.
- On-chip digital filter with programmable filter cutoff and output update rate.
- Self-calibration and system calibration options to eliminate gain and offset errors.
- Low power consumption: less than 1 mW at 3 V supplies and 1 MHz master clock.
- High accuracy: ±0.003% accuracy, low rms noise.
- Support for both bipolar and unipolar input signals.
- CMOS construction for very low power dissipation.
- Power-down mode reduces standby power consumption to 20 μW typical.
Applications
The AD7707BRZ-REEL7 is suitable for various low frequency measurement applications, including:
- Smart systems and IoT devices.
- Microcontroller or DSP-based systems.
- Industrial automation and control systems.
- Medical devices requiring precise analog-to-digital conversion.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7707BRZ-REEL7?
The AD7707BRZ-REEL7 has a resolution of up to 16 bits with no missing codes.
- What are the supported supply voltage ranges for the AD7707BRZ-REEL7?
The device operates from a single 2.7 V to 3.3 V or 4.75 V to 5.25 V supply.
- What types of input signals can the AD7707BRZ-REEL7 handle?
The device can handle low-level input signals (0 mV to 20 mV, ±20 mV to ±2.5 V) and high-level input signals (±10 V, ±5 V, 0 V to 10 V, 0 V to 5 V).
- What is the power consumption of the AD7707BRZ-REEL7?
The device consumes less than 1 mW at 3 V supplies and 1 MHz master clock, with a standby current of less than 8 μA.
- What interfaces does the AD7707BRZ-REEL7 support?
The device supports SPI, QSPI, MICROWIRE, and DSP-compatible interfaces.
- What is the sampling rate of the AD7707BRZ-REEL7?
The sampling rate can be up to 500 sps.
- Does the AD7707BRZ-REEL7 have calibration options?
Yes, it features self-calibration and system calibration options to eliminate gain and offset errors.
- In what packages is the AD7707BRZ-REEL7 available?
The device is available in 20-Lead SOIC (Wide) and 20-Lead TSSOP packages.
- What are the typical applications of the AD7707BRZ-REEL7?
It is used in smart systems, microcontroller or DSP-based systems, industrial automation, medical devices, and test and measurement equipment.
- How does the AD7707BRZ-REEL7 handle power management?
The device has a power-down mode that reduces standby power consumption to 20 μW typical.
