Overview
The AD7706BN, produced by Analog Devices Inc., is a highly integrated analog-to-digital converter (ADC) designed for low-frequency measurement applications. This 16-bit, 3-channel Sigma-Delta ADC is part of the AD7705/AD7706 family, which offers a complete analog front end for systems requiring precise and low-power signal conversion. The device operates from a single supply voltage of 2.7 V to 3.3 V or 4.75 V to 5.25 V, making it versatile for various system designs.
Key Specifications
| Parameter | Description |
|---|---|
| Number of Channels | 3 pseudo differential input channels |
| Resolution | 16 bits, no missing codes |
| Nonlinearity | 0.003% |
| Programmable Gain | Gains from 1 to 128 |
| Supply Voltage | 2.7 V to 3.3 V or 4.75 V to 5.25 V |
| Power Dissipation | 1 mW maximum @ 3 V |
| Standby Current | 8 μA maximum |
| Package Types | 16-lead PDIP, 16-lead SOIC, 16-lead TSSOP |
| Operating Temperature | −40°C to +85°C |
| Serial Interface | SPI-, QSPI-, MICROWIRE-, and DSP-compatible |
Key Features
- High-resolution 16-bit Sigma-Delta ADC with no missing codes.
- Programmable gain front end with gains from 1 to 128.
- Differential reference input and ability to buffer the analog input.
- Low power consumption with a maximum of 1 mW at 3 V and standby current of 8 μA.
- CMOS construction ensuring low power dissipation.
- Self-calibration and system calibration options to eliminate gain and offset errors.
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- Adjustable digital filter cutoff and output update rate via on-chip control register.
Applications
The AD7706BN is ideal for use in various low-frequency measurement applications, including:
- Smart sensors and transducers.
- Microcontroller or DSP-based systems.
- Industrial automation and control systems.
- Medical devices requiring precise signal conversion.
- Environmental monitoring systems.
Q & A
- What is the resolution of the AD7706BN ADC?
The AD7706BN has a resolution of 16 bits with no missing codes.
- What are the available package types for the AD7706BN?
The AD7706BN is available in 16-lead PDIP, 16-lead SOIC, and 16-lead TSSOP packages.
- What is the operating voltage range of the AD7706BN?
The AD7706BN operates from a single supply voltage of 2.7 V to 3.3 V or 4.75 V to 5.25 V.
- What is the maximum power dissipation of the AD7706BN at 3 V?
The maximum power dissipation is 1 mW at 3 V.
- Does the AD7706BN support self-calibration?
- What types of serial interfaces are supported by the AD7706BN?
The AD7706BN supports SPI, QSPI, MICROWIRE, and DSP-compatible serial interfaces.
- What is the temperature range for the AD7706BN?
The operating temperature range is −40°C to +85°C.
- Can the AD7706BN handle bipolar input signals?
- How many channels does the AD7706BN have?
The AD7706BN has three pseudo differential input channels.
- What is the nonlinearity of the AD7706BN?
The nonlinearity is 0.003%.
