Overview
The AD7730LBRUZ-REEL7, produced by Analog Devices Inc., is a complete analog front end designed 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, which is processed by a low pass programmable digital filter. This allows for the adjustment of filter cutoff, output rate, and settling time. The AD7730LBRUZ-REEL7 operates from a single +5 V supply and is available in a 24-lead TSSOP package.
Key Specifications
| Parameter | Value | Conditions/Comments |
|---|---|---|
| Resolution | 24 Bits | |
| Output Noise and Update Rates | See Tables I & II in datasheet | |
| Integral Nonlinearity | 18 ppm of FSR max | |
| Offset Error | See Note 3 in datasheet | |
| Offset Drift | < 5 nV/°C | |
| Gain Drift | < 3 ppm/°C | |
| Analog Input Ranges | 0 mV to +10 mV, +20 mV, +40 mV, +80 mV (unipolar); ±10 mV, ±20 mV, ±40 mV, ±80 mV (bipolar) | |
| Supply Voltage | +5 V | |
| Package Type | 24-lead TSSOP | |
| Power Consumption | Approximately 1/3 the power of AD7730 | In standby mode, reduces to 5 μA |
Key Features
- Programmable gain front end with two buffered differential analog inputs
- Differential reference input
- On-chip 6-bit DAC for removing TARE voltages
- Clock signals for synchronizing ac excitation of the bridge
- Self-calibration and system calibration options
- Serial interface configurable for three-wire operation, compatible with microcontrollers and digital signal processors
- Low power consumption, approximately 1/3 the power of AD7730
- Standby mode reduces power consumption to 5 μA
Applications
- Weigh-scale applications
- Pressure measurement applications
- Bridge transducer applications
- Industrial measurement and control systems
- High-precision data acquisition systems
Q & A
- What is the primary application of the AD7730LBRUZ-REEL7?
The primary application of the AD7730LBRUZ-REEL7 is for weigh-scale and pressure measurement applications.
- What is the resolution of the AD7730LBRUZ-REEL7?
The resolution of the AD7730LBRUZ-REEL7 is 24 bits.
- What are the available analog input ranges for the AD7730LBRUZ-REEL7?
The available analog input ranges are 0 mV 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-REEL7?
The supply voltage requirement is +5 V.
- What type of package is the AD7730LBRUZ-REEL7 available in?
The AD7730LBRUZ-REEL7 is available in a 24-lead TSSOP package.
- Does the AD7730LBRUZ-REEL7 support self-calibration and system calibration?
- How does the standby mode affect power consumption?
In standby mode, the power consumption is reduced to 5 μA.
- Is the serial interface of the AD7730LBRUZ-REEL7 compatible with microcontrollers and digital signal processors?
- What is the offset drift and gain drift of the AD7730LBRUZ-REEL7?
The offset drift is less than 5 nV/°C, and the gain drift is less than 3 ppm/°C.
- Does the AD7730LBRUZ-REEL7 have an on-chip DAC for removing TARE voltages?
