Overview
The AD587KRZ from Analog Devices Inc. is a high-precision 10 V voltage reference that represents a significant advancement in monolithic voltage reference technology. Utilizing a proprietary ion-implanted buried Zener diode and laser wafer trimming of high stability thin-film resistors, the AD587KRZ offers outstanding performance at a low cost. This device is designed to provide higher accuracy and lower noise compared to traditional band gap voltage references, making it ideal for a variety of precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 10.000 V ± 0.05% (typical) | V |
| Output Voltage Tolerance | ±0.05% | % |
| Maximum Output Current | 10 mA | mA |
| Maximum Input Voltage | 36 V | V |
| Operating Temperature Range | 0°C to 70°C | °C |
| Package Type | 8-Lead SOIC | |
| Pin Count | 8 | |
| Noise Reduction Feature | Yes, via external capacitor | |
| Trim Feature | Yes, fine trim connection available |
Key Features
- Laser Trimming: The AD587KRZ is laser trimmed for high accuracy and low temperature coefficients, ensuring very low errors over temperature without the need for external components.
- Low Noise: The device features a buried Zener diode approach, which provides lower noise and drift compared to band gap voltage references. An additional noise-reduction pin can further reduce the noise level.
- Industry-Standard Pinout: The AD587KRZ uses an industry-standard pinout, allowing for instant upgrades in many systems.
- Trim and Adjustable Output: The device includes a fine trim connection for applications requiring higher precision.
- High Precision: Suitable for use as a reference for 8-bit to 16-bit DACs and successive approximation or integrating ADCs with up to 14 bits of accuracy.
Applications
- Precision DACs and ADCs: The AD587KRZ is recommended for use as a reference for 8-bit, 10-bit, 12-bit, 14-bit, or 16-bit DACs and for successive approximation or integrating ADCs with up to 14 bits of accuracy.
- Current Sources: The device can be easily configured as a precision current source by selecting an appropriate control resistor.
- High-Current Supplies: It can be connected to power PNP or power Darlington PNP devices for higher current applications.
- General Precision Reference Applications: Suitable for any application requiring a high-precision voltage reference.
Q & A
- What is the output voltage of the AD587KRZ?
The output voltage of the AD587KRZ is 10.000 V with a tolerance of ±0.05%.
- What is the maximum output current of the AD587KRZ?
The maximum output current is 10 mA.
- What is the operating temperature range of the AD587KRZ?
The operating temperature range is from 0°C to 70°C.
- Does the AD587KRZ have a noise reduction feature?
Yes, the AD587KRZ has a noise-reduction pin that can be used to further reduce the noise level generated by the buried Zener diode.
- Can the AD587KRZ be used as a precision current source?
Yes, the AD587KRZ can be easily configured as a precision current source by selecting an appropriate control resistor).
- What types of packages are available for the AD587KRZ?
The AD587KRZ is available in an 8-lead SOIC package for surface-mount applications).
- What is the significance of the buried Zener diode in the AD587KRZ?
The buried Zener diode approach provides lower noise and drift compared to band gap voltage references).
- Can the AD587KRZ be used with DACs and ADCs?
Yes, the AD587KRZ is suitable for use as a reference for 8-bit to 16-bit DACs and for successive approximation or integrating ADCs with up to 14 bits of accuracy).
- Does the AD587KRZ require external components for operation?
No, the AD587KRZ does not require external components for basic operation. However, external components can be used for fine trimming and noise reduction).
- What is the typical application of the fine trim connection on the AD587KRZ?
The fine trim connection is designed for applications requiring higher precision output voltage).
