Overview
The AD7730LBRUZ-REEL, produced by Analog Devices Inc., is a complete analog front end designed specifically for weigh-scale and pressure measurement applications. This device accepts low-level signals directly from a transducer and outputs a serial digital word. It features a proprietary programmable gain front end based around an analog modulator and a low pass programmable digital filter, allowing for adjustment of filter cutoff, output rate, and settling time. The AD7730L is a lower power version of the AD7730, consuming approximately one-third of the power.
Key Specifications
| Parameter | Value | Conditions/Comments |
|---|---|---|
| Resolution | 24 bits | |
| Number of Channels | 2 | |
| Sampling Rate | 600 sps | |
| Analog Input Ranges | 0 to +10 mV, +20 mV, +40 mV, +80 mV (unipolar); ±10 mV, ±20 mV, ±40 mV, ±80 mV (bipolar) | |
| Supply Voltage | +5 V | Single supply operation |
| Offset Drift | < 5 nV/°C | |
| Gain Drift | < 3 ppm/°C | |
| Package | 24-lead TSSOP | |
| Interface Type | Serial (three-wire compatible) | Compatible with microcontrollers and digital signal processors |
Key Features
- Proprietary programmable gain front end based around an analog modulator.
- Low pass programmable digital filter for adjusting filter cutoff, output rate, and settling time.
- On-chip 6-bit DAC for offset/TARE removal.
- FASTStep™ mode for AC or DC excitation.
- Self-calibration and system calibration options.
- Buffered differential programmable gain analog inputs and differential reference input.
- Serial interface configurable for three-wire operation, compatible with microcontrollers and digital signal processors.
Applications
- Weigh scales.
- Pressure measurement.
- Bridge transducer applications.
Q & A
- What is the primary application of the AD7730LBRUZ-REEL?
The primary application of the AD7730LBRUZ-REEL is for weigh-scale and pressure measurement.
- What is the resolution of the AD7730LBRUZ-REEL?
The resolution of the AD7730LBRUZ-REEL is 24 bits.
- What are the available analog input ranges for the AD7730LBRUZ-REEL?
The available analog input ranges are 0 to +10 mV, +20 mV, +40 mV, +80 mV (unipolar) and ±10 mV, ±20 mV, ±40 mV, ±80 mV (bipolar).
- What is the supply voltage requirement for the AD7730LBRUZ-REEL?
The AD7730LBRUZ-REEL operates from a single +5 V supply.
- What is the offset drift of the AD7730LBRUZ-REEL?
The offset drift is less than 5 nV/°C.
- What is the gain drift of the AD7730LBRUZ-REEL?
The gain drift is less than 3 ppm/°C.
- What type of interface does the AD7730LBRUZ-REEL use?
The AD7730LBRUZ-REEL uses a serial interface that can be configured for three-wire operation and is compatible with microcontrollers and digital signal processors.
- What package options are available for the AD7730LBRUZ-REEL?
The AD7730LBRUZ-REEL is available in a 24-lead TSSOP package.
- Does the AD7730LBRUZ-REEL support self-calibration and system calibration?
Yes, the AD7730LBRUZ-REEL supports both self-calibration and system calibration options.
- What is the sampling rate of the AD7730LBRUZ-REEL?
The sampling rate of the AD7730LBRUZ-REEL is 600 samples per second (sps).
