Overview
The AD7705BRUZ-REEL7, produced by Analog Devices Inc., is a precision analog-to-digital converter (ADC) designed for low-frequency measurement applications. This device is part of the AD7705 series, which includes 2-channel differential ADCs. The AD7705 employs a Σ-Δ (sigma-delta) conversion technique to achieve up to 16 bits of no missing codes performance. It features a programmable-gain front end and an on-chip digital filter, making it suitable for direct connection to transducers and integration into smart, microcontroller, or DSP-based systems.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 2 (fully differential) |
| Resolution | 16 bits |
| Supply Voltage | 2.7 V to 3.3 V or 4.75 V to 5.25 V |
| Input Signal Range | 0 mV to 20 mV, 0 V to 2.5 V (unipolar and bipolar) |
| Reference Input | Differential reference input |
| Power Consumption | 1 mW (typical) |
| Package Type | 16-Lead TSSOP |
| Operating Temperature Range | -40°C to 85°C |
| Interface | Serial interface (3-wire operation) |
| Calibration | Self-calibration and system calibration options |
Key Features
- Programmable-gain front end based on an analog modulator.
- On-chip digital filter with programmable notch frequency.
- Low power consumption: 1 mW typical, and 20 μW in power-down mode.
- CMOS construction for low power dissipation.
- Serial interface configurable for 3-wire operation.
- Gain settings, signal polarity, and update rate selection configurable via the input serial port.
- Self-calibration and system calibration options to eliminate gain and offset errors.
Applications
The AD7705BRUZ-REEL7 is ideal for various low-frequency measurement applications, including:
- Smart systems.
- Microcontroller-based systems.
- DSP-based systems.
- Industrial automation.
- Medical devices.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7705BRUZ-REEL7?
The AD7705BRUZ-REEL7 has a resolution of up to 16 bits. - What is the supply voltage range for the AD7705BRUZ-REEL7?
The supply voltage range is 2.7 V to 3.3 V or 4.75 V to 5.25 V. - How many channels does the AD7705BRUZ-REEL7 have?
The AD7705BRUZ-REEL7 has two fully differential analog input channels. - What is the typical power consumption of the AD7705BRUZ-REEL7?
The typical power consumption is 1 mW. - What type of interface does the AD7705BRUZ-REEL7 use?
The AD7705BRUZ-REEL7 uses a serial interface configurable for 3-wire operation. - Does the AD7705BRUZ-REEL7 support calibration?
Yes, it supports self-calibration and system calibration options. - What is the operating temperature range of the AD7705BRUZ-REEL7?
The operating temperature range is -40°C to 85°C. - What type of package does the AD7705BRUZ-REEL7 come in?
The AD7705BRUZ-REEL7 comes in a 16-Lead TSSOP package. - Can the AD7705BRUZ-REEL7 handle bipolar input signals?
Yes, it can handle bipolar input signal ranges of ±20 mV through ±2.5 V. - Is the AD7705BRUZ-REEL7 suitable for low power applications?
Yes, it is designed for low power consumption and has a power-down mode that reduces standby power to 20 μW.
