ADA4254ACPZ-R7

ADA4254ACPZ-R7 is a zero drift, high voltage, low power programmable gain instrumentation amplifier (PGIA) designed for process control and industrial applications. The power consumption of the device is a mere 22mW, making the device an excellent choice for industrial system that demand precision, robustness, and low power. The zero drift amplifier topology of the device self calibrates dc errors and low frequency 1/f noise, achieving excellent dc precision over the entire specified temperature range. This high level of precision maximizes dynamic range and greatly reduces calibration requirements in many applications. The input multiplexer provides ±60V protection to the high impedance inputs of the amplifier, while providing the capability to switch between two input sources. It is used in applications such as universal process control front ends, data acquisition systems, test and measurement systems.

• Optimized for ADC synchronization, gain calibration via ROM
• 12 binary gain steps from 1/16V/V to 128V/V, 3 scaling gains: 1V/V, 1.25V/V, and 1.375V/V
• Input offset voltage is ±3μV typical at (TA = 25°C, VDDH = 28V)
• Low input offset voltage drift is ±0.08 μV/°C maximum at (TA = 25°C)
• Low gain drift is ±1ppm/°C maximum at (TA = 25°C), internal fault detection
• Low input bias current is ±1.5nA maximum at (TA = 25°C), SPI port with checksum (CRC) support
• High input impedance, integrated input EMI filtering, excitation current sources
• Wide input supply range from ±5V to ±28V, dedicated output amplifier supplies
• 7 GPIO ports with special functions, sequential chip select mode, external multiplexer control
• Operating temperature range from -40°C to +105°C, package style is 28-lead LFCSP

附註

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party