Overview
The AD7707BRUZ, 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 up to ±10 V, and it produces a serial digital output. It utilizes a Σ-Δ (Sigma-Delta) conversion technique to achieve up to 16 bits of no missing codes performance. The AD7707 features a programmable gain front end and an on-chip digital filter, allowing for adjustable filter cutoff and output update rates. It operates from a single supply voltage ranging from 2.7 V to 3.3 V or 4.75 V to 5.25 V, making it versatile for various system requirements.
Key Specifications
| Parameter | Description |
|---|---|
| Number of Channels | 3 |
| Input Channels | 2 low level pseudo differential, 1 high level, 1 differential reference |
| 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 |
| 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 |
| Power Dissipation | Less than 1 mW at 3 V |
| Standby Current | Less than 8 μA |
| Operating Temperature | -40°C to +85°C |
| Package | 20-lead TSSOP, 20-lead SOIC (Wide) |
Key Features
- Programmable gain front end with gains from 1 to 128
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP
- On-chip digital filter with programmable cutoff and output update rate
- Self-calibration and system calibration options to eliminate gain and offset errors
- Low power consumption with CMOS construction
- Ability to buffer the analog input
- Excellent static performance specifications with ±0.003% accuracy and low rms noise
Applications
The AD7707BRUZ is ideal for use in smart systems, microcontroller-based systems, and DSP-based systems. It is particularly suited for low frequency measurement applications such as those involving strain gauges, transducers, and other sensors. Its low power consumption and high accuracy make it a reliable choice for industrial, medical, and automotive applications.
Q & A
- What is the resolution of the AD7707BRUZ?
The AD7707BRUZ has a resolution of up to 16 bits with no missing codes.
- What are the input signal ranges for the AD7707BRUZ?
The device can handle low-level input signals from 0 mV to 20 mV and high-level signals up to ±10 V.
- What are the supply voltage options for the AD7707BRUZ?
The AD7707BRUZ operates from a single supply voltage ranging from 2.7 V to 3.3 V or 4.75 V to 5.25 V.
- What is the power dissipation of the AD7707BRUZ?
The power dissipation is less than 1 mW at 3 V.
- What are the package options for the AD7707BRUZ?
The device is available in 20-lead TSSOP and 20-lead SOIC (Wide) packages.
- Does the AD7707BRUZ support self-calibration?
Yes, the AD7707BRUZ supports self-calibration and system calibration to eliminate gain and offset errors.
- What is the operating temperature range of the AD7707BRUZ?
The operating temperature range is -40°C to +85°C.
- Is the AD7707BRUZ compatible with various serial interfaces?
Yes, it is compatible with SPI, QSPI, MICROWIRE, and DSP interfaces.
- What are some typical applications of the AD7707BRUZ?
It is used in smart systems, microcontroller-based systems, DSP-based systems, and applications involving strain gauges and transducers.
- How does the AD7707BRUZ handle standby power consumption?
The standby current is less than 8 μA.
