Overview
The ADA4254ACPZ-R7 from Analog Devices Inc. is a zero-drift, high-voltage, low-power programmable gain instrumentation amplifier (PGIA) designed for process control and industrial applications. This device is notable for its high precision, robustness, and low power consumption, making it an excellent choice for demanding industrial systems. The ADA4254 features a wide input supply range, integrated EMI filtering, and various safety features to ensure system reliability and ease SIL (Safety Integrity Level) certification.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADA4254ACPZ-R7 |
| Package | 28-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP) |
| Supply Voltage Range | ±5 V to ±28 V |
| Input Offset Voltage | ±14 μV maximum |
| Input Offset Voltage Drift | ±0.08 μV/°C maximum |
| Input Bias Current | ±1.5 nA maximum |
| Input Impedance (Common Mode) | >1 GΩ || 11 pF |
| Input Impedance (Differential) | >1 GΩ || 4.7 pF |
| Temperature Range | −40°C to +105°C |
| Power Consumption | 22 mW |
Key Features
- Zero-drift, high-voltage, low-power operation
- Programmable gain via ROM
- Low gain drift: ±1 ppm/°C maximum
- High CMRR: 116 dB minimum, G = 1 V/V
- Integrated input EMI filtering
- Seven general-purpose input/output (GPIO) pins with special functions
- Excitation current source output for biasing sensors like RTDs
- SPI port with cyclical redundancy check (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 ADA4254ACPZ-R7 used for?
The ADA4254ACPZ-R7 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 input offset voltage of the ADA4254ACPZ-R7?
The input offset voltage is ±14 μV maximum.
- What is the temperature range for the ADA4254ACPZ-R7?
The specified temperature range is −40°C to +105°C.
- Does the ADA4254ACPZ-R7 have integrated EMI filtering?
- What is the power consumption of the ADA4254ACPZ-R7?
The power consumption is 22 mW.
- Does the ADA4254ACPZ-R7 support SPI communication?
- What types of packages are available for the ADA4254ACPZ-R7?
The ADA4254ACPZ-R7 is available in a 28-lead LFCSP (5mm x 5mm x 0.75mm w/ EP) and a 24-lead TSSOP package.
- Does the ADA4254ACPZ-R7 have GPIO pins?
- What safety features does the ADA4254ACPZ-R7 have?
The device includes internal fault detection, wire break test currents, and on-chip test multiplexer, which ease system safety integrity level (SIL) certification.
- Can the ADA4254ACPZ-R7 be used with sensors like RTDs?
