Overview
The AD587JR, produced by Analog Devices Inc., is a high precision 10 V voltage reference. It 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 design approach ensures outstanding performance at a low cost, offering lower noise and drift compared to band gap voltage references. The AD587JR is particularly suitable for applications requiring high accuracy and stability, such as in digital-to-analog converters (DACs) and analog-to-digital converters (ADCs).
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage | 9.990 | 10.000 | 10.010 | V |
| Output Voltage Drift (0°C to 70°C) | - | 10 | 20 | ppm/°C |
| Output Voltage Drift (−55°C to +125°C) | - | 10 | 20 | ppm/°C |
| Gain Adjustment | -1 | - | +3 | % |
| Line Regulation (13.5 V ≤ +VIN ≤ 36 V) | - | - | ±100 | μV/V |
| Load Regulation (0 mA < IOUT < 10 mA) | - | - | ±100 | μV/mA |
| Operating Temperature Range | 0°C to 70°C (AD587J, AD587K) | - | -55°C to +125°C (AD587U) | °C |
Key Features
- Laser trimming of both initial accuracy and temperature coefficients, ensuring very low errors over temperature without the need for external components.
- Optional fine trim connection for applications requiring higher precision.
- Industry-standard pinout, allowing for instant upgrades in many systems.
- Very low output noise, with a noise-reduction pin to further reduce noise levels using an external capacitor.
- Available in various packages including 8-lead SOIC, PDIP, and CERDIP.
Applications
- Reference for 8-bit, 10-bit, 12-bit, 14-bit, or 16-bit DACs that require an external precision reference.
- Ideal for successive approximation or integrating ADCs with up to 14 bits of accuracy.
- Precision current sources and high current supplies by configuring with external components.
Q & A
- What is the output voltage of the AD587JR?
The output voltage of the AD587JR is 10.000 V ± 10 mV.
- What is the operating temperature range for the AD587JR?
The AD587J and AD587K models operate from 0°C to 70°C, while the AD587U model operates from −55°C to +125°C.
- How does the AD587JR reduce noise?
The AD587JR has a noise-reduction pin that can be used with an external capacitor to further reduce the noise level generated by the buried Zener diode.
- What packages are available for the AD587JR?
The AD587JR is available in 8-lead SOIC, PDIP, and CERDIP packages.
- Can the AD587JR be used as a precision current source?
- Why is the AD587JR preferred over standard on-chip references?
The AD587JR offers better performance in terms of accuracy, noise, and drift compared to standard on-chip references.
- What is the significance of the fine trim connection on the AD587JR?
The fine trim connection allows for finer adjustment of the output voltage, enabling higher precision in applications that require it.
- Can the AD587JR be used in successive approximation or integrating ADCs?
- How does the laser trimming affect the performance of the AD587JR?
The laser trimming ensures very low errors over temperature without the need for external components, enhancing the overall performance and stability of the device.
- What is the typical load current range for the AD587JR?
The typical load current range for the AD587JR is from 0 mA to 10 mA.
