Overview
The ADA4254ARUZ, produced by Analog Devices Inc., is a zero drift, high voltage, low power programmable gain instrumentation amplifier (PGIA). This device is specifically designed for process control and industrial applications, offering high precision, robustness, and low power consumption. The ADA4254 features a zero drift amplifier topology that self-calibrates dc errors and low frequency 1/f noise, ensuring excellent dc precision over the entire specified temperature range of −40°C to +105°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOSI) | ±3 | ±14 | - | μV |
| Input Offset Voltage Drift | ±0.03 | ±0.08 | - | μV/°C |
| Gain Range | 1/16 V/V | - | 128 V/V | - |
| Scaling Gains | 1 V/V | - | 1.375 V/V | - |
| Power Consumption | - | 22 mW | - | - |
| Input Bias Current | ±0.45 nA | ±1.5 nA | - | - |
| Common Mode Rejection Ratio (CMRR) | 116 dB | - | - | - |
| Input Supply Range | ±5 V | - | ±28 V | - |
| Package Types | 28-Lead LFCSP | - | 24-Lead TSSOP | - |
Key Features
- Optimized for ADC synchronization
- Low power consumption: 22 mW (±12 V supplies)
- 12 binary gain steps from 1/16 V/V to 128 V/V and three scaling gains: 1 V/V, 1.25 V/V, and 1.375 V/V
- ±60 V protected input multiplexer
- Excellent dc precision with low input offset voltage and drift
- High CMRR: 116 dB minimum at G = 1 V/V
- Low input bias current: ±1.5 nA maximum
- High input impedance and integrated input EMI filtering
- Dedicated output amplifier supplies and 7 GPIO ports with special functions
- Sequential chip select mode, external multiplexer control, and excitation current sources
- SPI port with checksum (CRC) support, internal fault detection, and wire break test currents
- On-chip test multiplexer
Applications
- Universal process control front ends
- Data acquisition systems
- Test and measurement systems
Q & A
- What is the ADA4254ARUZ used for?
The ADA4254ARUZ is used in process control and industrial applications, particularly in universal process control front ends, data acquisition systems, and test and measurement systems.
- What is the gain range of the ADA4254ARUZ?
The ADA4254ARUZ has 12 binary gain steps ranging from 1/16 V/V to 128 V/V, along with three scaling gains of 1 V/V, 1.25 V/V, and 1.375 V/V.
- What is the power consumption of the ADA4254ARUZ?
The power consumption is 22 mW with ±12 V supplies.
- What is the input offset voltage of the ADA4254ARUZ?
The input offset voltage is ±14 μV maximum.
- What is the CMRR of the ADA4254ARUZ?
The CMRR is 116 dB minimum at G = 1 V/V.
- What are the package options for the ADA4254ARUZ?
The device is available in 28-Lead LFCSP and 24-Lead TSSOP packages.
- What safety features does the ADA4254ARUZ have?
The device includes internal fault detection, wire break test currents, and SPI port with checksum (CRC) support.
- What is the temperature range for the ADA4254ARUZ?
The specified temperature range is −40°C to +105°C.
- Does the ADA4254ARUZ have integrated EMI filtering?
Yes, it has integrated input EMI filtering.
- What special functions do the GPIO ports provide?
The 7 GPIO ports can be configured to provide various special functions, including excitation current sources for sensors like RTDs.
- How does the ADA4254ARUZ protect its inputs?
The device features a ±60 V protected input multiplexer.
