Overview
The AD587JN, produced by Analog Devices Inc., is a high-precision 10 V voltage reference integrated circuit. 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 ensures outstanding performance at a low cost, offering superior accuracy and stability compared to other 10 V references.
The AD587JN is designed to be compatible with industry-standard pinouts, allowing for easy upgrades in existing systems. It is particularly recommended for use as a reference in 8-bit, 10-bit, 12-bit, 14-bit, and 16-bit DACs and ADCs that require an external precision reference.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 10.000 V ± 5 mV (U grade) | V |
| Temperature Range | 0°C to 70°C (J and K grades), -55°C to +125°C (U grade) | °C |
| Maximum Output Change | ±14 mV (U grade, -55°C to +125°C) | mV |
| Output Noise | Very low, reducible via noise reduction pin | - |
| Package Types | 8-lead PDIP, 8-lead SOIC, 8-lead CERDIP | - |
| Input Voltage | +3.5 V minimum | V |
| Quiescent Current | Typically 2 mA | mA |
Key Features
- Laser Trimming: Initial accuracy and temperature coefficients are laser trimmed for very low errors over temperature without external components.
- Optional Fine Trim: A fine trim connection is available for applications requiring higher precision.
- Industry-Standard Pinout: Allows for instant upgrades in systems using standard 10 V references.
- Low Noise: The buried Zener approach provides lower noise and drift compared to band gap voltage references. A noise-reduction pin is also available.
- High Stability: High stability thin-film resistors ensure consistent performance.
Applications
- DACs and ADCs: Ideal for 8-bit, 10-bit, 12-bit, 14-bit, and 16-bit DACs and ADCs requiring an external precision reference.
- Successive Approximation and Integrating ADCs: Suitable for ADCs with up to 14 bits of accuracy.
- Precision Current Sources: Can be configured as a precision current source by choosing the appropriate control resistor.
- High Current Supplies: Can be connected to power PNP or Darlington PNP devices for higher current applications.
Q & A
- What is the output voltage of the AD587JN?
The output voltage of the AD587JN is 10.000 V ± 5 mV (U grade).
- What are the temperature ranges for the AD587JN?
The AD587J and AD587K are specified for operation from 0°C to 70°C, and the AD587U is specified for operation from -55°C to +125°C.
- How can the noise level of the AD587JN be reduced?
The noise level can be reduced using the noise-reduction pin with an external capacitor to ground.
- What types of packages are available for the AD587JN?
The AD587JN is available in 8-lead PDIP, 8-lead SOIC, and 8-lead CERDIP packages.
- What is the minimum input voltage required for the AD587JN?
The minimum input voltage required is +3.5 V.
- What is the typical quiescent current of the AD587JN?
The typical quiescent current is 2 mA.
- Can the AD587JN be used as a precision current source?
Yes, it can be configured as a precision current source by choosing the appropriate control resistor.
- Is the AD587JN suitable for high current applications?
Yes, it can be connected to power PNP or Darlington PNP devices for higher current applications.
- What types of ADCs and DACs is the AD587JN recommended for?
The AD587JN is recommended for 8-bit, 10-bit, 12-bit, 14-bit, and 16-bit DACs and ADCs that require an external precision reference.
- How does the AD587JN compare to standard on-chip references?
The AD587JN offers better performance than standard on-chip references in terms of accuracy and stability.
