Overview
The AD7795BRUZ is a 6-channel, low noise, low power, 16-bit Sigma-Delta Analog to Digital Converter (ADC) manufactured by Analog Devices Inc. This device is designed for high precision measurement applications and features an on-chip low noise instrumentation amplifier, allowing it to interface directly with signals of small amplitude. The AD7795BRUZ includes a precision, low noise, low drift internal band gap reference and can accept up to two external differential references. It is housed in a 24-lead Thin Shrink Small Outline Package (TSSOP) and operates with a power supply from 2.7 V to 5.25 V, making it suitable for a wide range of industrial and precision measurement applications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 16 bits | - | - |
| Number of Channels | 6 | - | Differential inputs |
| Output Update Rate | 4.17 Hz to 470 Hz | - | - |
| Power Supply Voltage | 2.7 V to 5.25 V | V | - |
| Temperature Range | −40°C to +105°C (B-grade) | °C | - |
| Current Consumption | 400 μA (typical) | μA | - |
| Package Type | 24-lead TSSOP | - | - |
| Interface | 3-wire serial (SPI, QSPI, MICROWIRE, DSP compatible) | - | - |
| Signal-to-Noise Ratio (SNR) | 88 dB | dB | - |
| Total Harmonic Distortion (THD) | -88 dB | dB | - |
Key Features
- On-chip low noise instrumentation amplifier for direct interface with small amplitude signals.
- Precision, low noise, low drift internal band gap reference with optional external differential references.
- Programmable excitation current sources, burnout currents, and a bias voltage generator.
- Low-side power switch to power down bridge sensors between conversions, minimizing power consumption.
- Operates with either an internal or external clock.
- Independent interface power supply.
- Schmitt trigger on SCLK for robust clocking.
- Simultaneous 50 Hz/60 Hz rejection and reference detect.
Applications
- Temperature measurement
- Pressure measurement
- Weigh scales
- Strain gage transducers
- Gas analysis
- Industrial process control
- Instrumentation
- Blood analysis
- Smart transmitters
- Liquid/gas chromatography
- 6-digit DVM
Q & A
- What is the resolution of the AD7795BRUZ ADC?
The AD7795BRUZ has a resolution of 16 bits.
- How many channels does the AD7795BRUZ have?
The AD7795BRUZ has 6 differential input channels.
- What is the output update rate of the AD7795BRUZ?
The output update rate ranges from 4.17 Hz to 470 Hz.
- What is the power supply voltage range for the AD7795BRUZ?
The power supply voltage range is from 2.7 V to 5.25 V.
- What is the temperature range for the AD7795BRUZ?
The temperature range is −40°C to +105°C for B-grade parts.
- What is the typical current consumption of the AD7795BRUZ?
The typical current consumption is 400 μA.
- What type of package does the AD7795BRUZ come in?
The AD7795BRUZ is housed in a 24-lead TSSOP package.
- What interfaces does the AD7795BRUZ support?
The AD7795BRUZ supports 3-wire serial interfaces such as SPI, QSPI, MICROWIRE, and DSP compatible interfaces.
- What are some of the key applications of the AD7795BRUZ?
Key applications include temperature measurement, pressure measurement, weigh scales, strain gage transducers, gas analysis, industrial process control, and more.
- Does the AD7795BRUZ have any power-saving features?
Yes, the AD7795BRUZ has a low-side power switch to power down bridge sensors between conversions, minimizing power consumption.
