AD7846JPZ

Overview

The AD7846JPZ is a 16-bit voltage output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. using the LC2MOS process. It features a segmented architecture ensuring guaranteed 16-bit monotonicity over temperature, with an integral linearity error of ±2 LSBs. The device includes an on-chip output amplifier configurable for unipolar (0 V to +5 V or +10 V) or bipolar (±5 V or ±10 V) ranges via external resistors. It operates with analog supplies of ±11.4 V to ±15.75 V and a digital supply of 4.75 V to 5.25 V. Typical power dissipation is 100 mW. The component is housed in a 28-lead PLCC package and supports a microprocessor-compatible parallel interface with readback capability.

Feature Summary

• 16-bit resolution with guaranteed monotonicity over temperature
• Segmented architecture providing ±2 LSBs integral linearity error
• Microprocessor compatible interface with DAC latch readback function
• On-chip output amplifier supporting unipolar and bipolar configurations

Applications

• Closed-loop control systems requiring high accuracy
• Automatic Test Equipment (ATE) utilizing readback diagnostics
• Position measurement applications using LVDT interfaces
• Multiplying DAC circuits for four-quadrant signal processing

Procurement Notes

Verify the specific suffix 'JPZ' corresponds to the plastic PLCC package variant with the J-grade temperature range (0°C to +70°C). Confirm that the ordering documentation specifies the RoHS compliant status associated with the Z suffix. Ensure the procurement source provides the official Analog Devices datasheet Rev. H for accurate timing and electrical specifications.

Selection Notes

Select the AD7846JPZ when 16-bit monotonicity and low power consumption (100 mW typical) are critical. Choose this part if a parallel interface with readback capability is required for system calibration. Consider the ±15 V analog supply requirement and the 28-lead PLCC footprint during PCB layout. Verify that the application does not require differential outputs or higher sampling rates than the settling time allows.

Part Context

The AD7846 belongs to the AD7846 series of 16-bit voltage output DACs. The JPZ designation indicates the Plastic Leaded Chip Carrier (PLCC) package variant. Other variants include ceramic DIP and standard DIP packages. The device utilizes a unique segmented architecture where the four MSBs select segments on a resistor string, while the 12 LSBs provide fine resolution through a separate DAC stage.

Replacement Considerations

Direct pin-compatible replacements within the same family include other package variants like AD7846JN or AD7846KNZ, provided the package type matches the design. Cross-vendor equivalents such as the LTC1650 or DAC161S055 offer similar 16-bit performance but may differ in interface type (serial vs. parallel) and power supply requirements.