The Analog Devices AD8426ACPZ-R7 is a dual-channel, low-power instrumentation amplifier designed for precision sensor interfaces, bridge amplifiers, industrial process control and multichannel data-acquisition systems.
The AD8426 integrates two instrumentation amplifiers in a compact 4 × 4mm package, helping designers reduce PCB area in multichannel measurement systems. Each amplifier requires only one external resistor to set the gain, with a programmable gain range from 1 to 1000.
The device supports a very wide power-supply range. It can operate from a 2.2V to 36V single supply or from ±1.35V to ±18V dual supplies, allowing it to be used in low-voltage sensor electronics as well as higher-voltage industrial signal-conditioning systems.
Its rail-to-rail output architecture helps maximize available signal swing, while the input common-mode range can extend below the negative supply rail. This allows small signals close to ground to be amplified even when the circuit operates from a single supply.
At a gain of 1, the AD8426 provides approximately 1MHz bandwidth and a minimum 80dB common-mode rejection ratio (CMRR). Typical input voltage noise is 24nV/√Hz, while typical supply current is only 350µA per amplifier, providing a useful combination of precision, bandwidth and low power consumption.
The amplifier inputs are designed for robust sensor connections and can tolerate voltages beyond the normal supply rails under specified conditions. For example, ADI states that with ±5V supplies, the inputs are guaranteed to withstand up to ±35V without damage. This feature is useful in industrial systems where external sensors and wiring may experience abnormal voltages.
The A-grade AD8426ACPZ-R7 is specified with input offset voltage up to approximately 200µV, input bias current around 20nA, and a typical slew rate of approximately 0.6V/µs.
The specific AD8426ACPZ-R7 ordering code uses a 16-lead LFCSP package measuring 4 × 4mm and is rated for -40°C to +125°C operation. The R7 suffix denotes tape-and-reel packaging, with a manufacturer-standard full reel quantity of 1,500 pieces. ADI currently lists this exact ordering code as PRODUCTION.
Key Features
- Manufacturer: Analog Devices / ADI
- Part Number: AD8426ACPZ-R7
- Product Type: Instrumentation Amplifier
- Number of Channels: 2
- Output Type: Rail-to-Rail
- Gain Range: 1 to 1000
- Gain Setting: Single External Resistor
- Bandwidth at G = 1: 1MHz
- Slew Rate: Approx. 0.6V/µs
- Minimum CMRR at G = 1: 80dB
- Input Voltage Noise: 24nV/√Hz
- Input Offset Voltage: Up to Approx. 200µV
- Input Bias Current: Approx. 20nA
- Typical Supply Current: 350µA per Amplifier
- Single-Supply Range: 2.2V to 36V
- Dual-Supply Range: ±1.35V to ±18V
- Input Range Extends Below Ground
- Inputs Protected Beyond Supply Rails
- Suitable for ±10V Signal Handling
- Operating Temperature: -40°C to +125°C
- Package: LFCSP-16
- Package Size: 4 × 4mm
- Package Option: CP-16-19
- Mounting Type: Surface Mount / SMD
- Packaging: Tape & Reel
- Standard Reel Quantity: 1,500 pcs
- RoHS Compliant
- Product Status: Production
- Recommended for New Designs
Typical Applications
- Industrial Process Control
- Bridge Sensor Amplifiers
- Load Cell Interfaces
- Pressure Sensor Interfaces
- Strain Gauge Measurement
- Medical Instrumentation
- Portable Data Acquisition
- Multichannel Measurement Systems
- Precision Sensor Signal Conditioning
- Test and Measurement Equipment
- Industrial Instrumentation
- High-Density Analog Front Ends
The AD8426ACPZ-R7 is particularly suitable for designs requiring two precision instrumentation amplifiers, programmable gain from 1 to 1000, wide supply operation and rail-to-rail output in a compact 4 × 4mm package.
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