Overview
The AD587KNZ, produced by Analog Devices Inc., is a high-precision 10 V voltage reference IC that represents a significant advancement in monolithic voltage reference technology. It utilizes a proprietary ion-implanted buried Zener diode and laser wafer trimming of high stability thin-film resistors, ensuring outstanding performance at a low cost. This device is designed to offer superior performance compared to most other 10 V references, making it an ideal choice for various precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 10.000 V ± 5 mV (U grade) | V |
| Total Error (AD587U) | ±14 mV | mV |
| Operating Temperature Range | -55°C to +125°C (AD587U), 0°C to 70°C (AD587J, AD587K) | °C |
| Quiescent Current | < 4 mA | mA |
| Input Voltage | Up to 15 V | V |
| Noise (0.1 Hz to 10 Hz) | < 4 μV p-p | μV p-p |
| Noise (1 MHz bandwidth) | Approximately 200 μV p-p | μV p-p |
| Package Types | 8-Lead PDIP, 8-Lead SOIC, 8-Lead CERDIP |
Key Features
- Laser trimming of both initial accuracy and temperature coefficients for very low errors over temperature without external components.
- Optional fine trim connection for higher precision applications.
- Industry-standard pinout allowing instant upgrade of systems using other 10 V references.
- Very low output noise, with a noise-reduction pin to further minimize noise levels.
- Proprietary buried Zener diode design for lower noise and drift compared to band gap voltage references.
Applications
- Reference for 8-bit, 10-bit, 12-bit, 14-bit, or 16-bit DACs requiring an external precision reference.
- Suitable for successive approximation or integrating ADCs with up to 14 bits of accuracy.
- Ideal for applications requiring better performance than standard on-chip references.
Q & A
- What is the output voltage of the AD587KNZ?
The output voltage of the AD587KNZ is 10.000 V with an accuracy of ±5 mV for the U grade.
- What is the operating temperature range for the AD587U model?
The AD587U operates from -55°C to +125°C.
- How much quiescent current does the AD587 require?
The AD587 requires less than 4 mA of quiescent current from an operating supply of up to 15 V.
- What types of packages are available for the AD587?
The AD587 is available in 8-Lead PDIP, 8-Lead SOIC, and 8-Lead CERDIP packages.
- What is the noise level of the AD587 in the 0.1 Hz to 10 Hz band?
The noise level is typically less than 4 μV p-p in the 0.1 Hz to 10 Hz band.
- Can the AD587 be used for high-precision ADCs?
Yes, the AD587 is suitable for successive approximation or integrating ADCs with up to 14 bits of accuracy.
- How does the AD587 reduce noise?
The AD587 has a noise-reduction pin that can be used with an external capacitor to ground to further reduce the noise level generated by the buried Zener.
- What is the advantage of the buried Zener diode design in the AD587?
The buried Zener diode design provides lower noise and drift compared to band gap voltage references.
- Can the output voltage of the AD587 be fine-tuned?
Yes, the AD587 has an optional fine trim connection for adjusting the output voltage with minimal effect on other device characteristics.
- Is the AD587 compatible with industry-standard pinouts?
Yes, the AD587 uses an industry-standard pinout, allowing for instant upgrades of systems using other 10 V references.
