Overview
The AD7705BRU-REEL, produced by Analog Devices Inc., is a 16-bit, 2-channel analog-to-digital converter (ADC) designed for low-frequency measurement applications. This integrated circuit is part of the AD7705 series, which offers high precision and low power consumption, making it ideal for use in smart, microcontroller, or DSP-based systems.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 |
| Resolution | 16 bits |
| Input Type | Fully differential analog input channels |
| Supply Voltage | 2.7 V to 3.3 V or 4.75 V to 5.25 V |
| Reference Input | Differential reference input |
| Input Signal Range | 0 mV to 20 mV, 0 V to 2.5 V, and bipolar ranges up to ±1.225 V |
| Nonlinearity | ±0.003% |
| RMS Noise | <600 nV |
| Power Dissipation | 1 mW maximum @ 3 V |
| Standby Current | 8 μA maximum |
| Package Type | 16-lead TSSOP |
| Operating Temperature | −40°C to +85°C |
Key Features
- Programmable gain front end with gains from 1 to 128
- Σ-Δ conversion technique for up to 16 bits of no missing codes performance
- 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 dissipation with CMOS construction
- Power-down mode reducing standby power consumption to 20 μW typical
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP
- Schmitt-trigger input on SCLK
Applications
The AD7705BRU-REEL is suitable for various low-frequency measurement applications, including industrial process control, medical devices, and smart sensor systems. It is particularly useful in microcontroller or DSP-based systems where high precision and low power consumption are critical.
Q & A
- What is the resolution of the AD7705BRU-REEL?
The AD7705BRU-REEL has a resolution of 16 bits. - How many channels does the AD7705BRU-REEL support?
The AD7705BRU-REEL supports 2 fully differential analog input channels. - What are the supply voltage ranges for the AD7705BRU-REEL?
The supply voltage ranges are 2.7 V to 3.3 V or 4.75 V to 5.25 V. - What is the nonlinearity of the AD7705BRU-REEL?
The nonlinearity is ±0.003%. - What is the typical power dissipation of the AD7705BRU-REEL at 3 V?
The typical power dissipation is 1 mW at 3 V. - What is the package type of the AD7705BRU-REEL?
The package type is 16-lead TSSOP. - What are the operating temperature ranges for the AD7705BRU-REEL?
The operating temperature ranges are −40°C to +85°C. - Does the AD7705BRU-REEL support self-calibration?
Yes, it supports self-calibration and system calibration options. - What type of serial interface does the AD7705BRU-REEL use?
The AD7705BRU-REEL uses a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP. - Is the AD7705BRU-REEL suitable for low power applications?
Yes, it is designed for low power consumption with a standby current of 8 μA maximum.
