Overview
The AD587, part number 5962-8982503PA, is a high-precision 10 V voltage reference produced by Analog Devices Inc. This device represents a significant advancement in monolithic voltage references, utilizing a proprietary ion-implanted buried Zener diode and laser wafer trimming of high stability thin-film resistors. This technology ensures outstanding performance at a low cost, offering lower noise and drift compared to band gap voltage references.
The AD587 is designed to provide high accuracy and stability, making it ideal for various applications requiring precise voltage references. It is compatible with industry-standard pinouts, allowing for easy upgrades in existing systems.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Output Voltage | 10.000 V ± 5 mV (U grade) | V |
| Temperature Coefficient | 5 ppm/°C maximum (U grade) | ppm/°C |
| Quiescent Current | 4 mA maximum | mA |
| Power Dissipation | 30 mW | mW |
| Output Noise (0.1 Hz to 10 Hz) | 4 μV p-p | μV p-p |
| Spectral Density at 100 Hz | 100 nV/√Hz | nV/√Hz |
| Long-term Stability | ±15 ppm/1000 hr | ppm/1000 hr |
| Short-circuit Current to Ground | 30 mA to 70 mA | mA |
| Temperature Range (Specified Performance) | −55°C to +125°C (U grade) | °C |
| Package Types | 8-lead CERDIP, 8-lead SOIC, 8-lead PDIP |
Key Features
- Laser Trimming: Both initial accuracy and temperature coefficients are laser trimmed, resulting in very low errors over temperature without the need for external components.
- Noise Reduction: The device includes a noise-reduction pin to further lower the noise level generated by the buried Zener.
- Optional Fine Trim Connection: Designed for applications requiring higher precision.
- Industry-Standard Pinout: Allows for instant upgrades in systems using standard 10 V references.
- Low Output Noise: Typically 4 μV p-p from 0.1 Hz to 10 Hz.
- MIL-STD-883 Compliance: Available in versions that meet MIL-STD-883 standards.
Applications
The AD587 is highly recommended for use as a reference in various analog-to-digital converter (ADC) and digital-to-analog converter (DAC) applications. Specifically, it is ideal for:
- 8-bit, 10-bit, 12-bit, 14-bit, or 16-bit DACs requiring an external precision reference.
- Successive approximation or integrating ADCs with up to 14 bits of accuracy.
- Any system that requires a high-precision voltage reference with low noise and drift.
Q & A
- What is the output voltage of the AD587?
The output voltage of the AD587 is 10.000 V ± 5 mV (U grade).
- What is the temperature coefficient of the AD587?
The temperature coefficient of the AD587 is 5 ppm/°C maximum (U grade).
- What is the quiescent current of the AD587?
The quiescent current of the AD587 is 4 mA maximum.
- What are the available package types for the AD587?
The AD587 is available in 8-lead CERDIP, 8-lead SOIC, and 8-lead PDIP packages.
- What is the temperature range for the AD587U grade?
The AD587U grade is specified for operation from −55°C to +125°C.
- Does the AD587 have noise reduction capabilities?
- Is the AD587 compliant with MIL-STD-883?
- What types of ADCs and DACs can the AD587 be used with?
The AD587 is suitable for 8-bit, 10-bit, 12-bit, 14-bit, or 16-bit DACs and successive approximation or integrating ADCs with up to 14 bits of accuracy.
- How does the AD587 compare to standard on-chip references?
The AD587 offers better performance than standard on-chip references in terms of accuracy, noise, and drift.
- Can the AD587 be used for fine trimming?
