Overview
The AD589SH is a two-terminal, low-cost, temperature-compensated bandgap voltage reference produced by Analog Devices Inc. This component provides a fixed 1.23 V output voltage for input currents ranging from 50 µA to 5.0 mA. The AD589SH is known for its high stability, which is achieved through the precise matching and thermal tracking of on-chip components. Utilizing Analog Devices' precision bipolar processing and thin-film technology, this device offers excellent performance at a low cost.
The AD589SH is part of a series that includes several grades, with the S grade specifically rated for operation over the full –55°C to +125°C temperature range. It is available in a metal can (H-02A) package, making it suitable for a variety of applications requiring stable voltage references.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage at 25°C | 1.200 | 1.235 | 1.250 | V |
| Output Voltage Change vs. Current (50 µA to 5 mA) | 5 | 5 | 5 | mV |
| Dynamic Output Impedance | 0.6 | 2 | 2 | Ω |
| RMS Noise Voltage (10 Hz < f < 10 kHz) | 5 | 5 | 5 | µV |
| Temperature Coefficient | 10 | 50 | 100 | ppm/°C |
| Turn-On Settling Time to 0.1% | 25 | 25 | 25 | µs |
| Operating Current | 0.05 | 5 | 5 | mA |
| Operating Temperature | –55 | +125 | °C | |
| Package Option | Metal Can (H-02A) |
Key Features
- Constant Reference Voltage: Provides a fixed 1.23 V output voltage for a wide range of input currents (50 µA to 5.0 mA).
- Low Output Impedance: Features an output impedance of 0.6 Ω, ten times lower than typical low-TC Zener diodes, ensuring stable output voltage under changing load conditions without the need for external components.
- Temperature Stability: Offers temperature coefficients as low as 10 ppm/°C, ensuring stable output voltage over a wide range of operating temperatures.
- Flexible Operation: Can be operated as a positive or negative reference, and also supports floating operation.
- Low Power Consumption: Operates with a total current as low as 50 µA (60 µW total power dissipation), making it ideal for battery-powered instrument applications.
- MIL-STD-883 Compliance: Available in versions compliant with MIL-STD-883, suitable for military and high-reliability applications.
Applications
- Battery-Powered Instruments: Ideal for applications where low power consumption is critical, such as in battery-powered instruments and devices.
- High-Reliability Systems: Suitable for military and high-reliability applications due to its compliance with MIL-STD-883.
- Precision Measurement Equipment: Used in precision measurement equipment where a stable voltage reference is essential.
- Industrial Control Systems: Can be used in industrial control systems that require stable voltage references over a wide range of temperatures.
- Aerospace and Defense: Its robust temperature range and stability make it a viable option for aerospace and defense applications.
Q & A
- What is the output voltage of the AD589SH?
The AD589SH provides a fixed output voltage of 1.23 V.
- What is the input current range for the AD589SH?
The input current range is between 50 µA and 5.0 mA.
- What is the output impedance of the AD589SH?
The output impedance is 0.6 Ω.
- What is the temperature coefficient of the AD589SH?
The temperature coefficient is as low as 10 ppm/°C.
- Can the AD589SH be used in high-temperature environments?
Yes, it is rated for operation over the full –55°C to +125°C temperature range.
- Is the AD589SH suitable for battery-powered devices?
Yes, it operates with a total current as low as 50 µA, making it ideal for battery-powered applications.
- Does the AD589SH require external components for operation?
No, it does not require external components to maintain full accuracy under changing load conditions.
- What package options are available for the AD589SH?
The AD589SH is available in a metal can (H-02A) package.
- Is the AD589SH compliant with MIL-STD-883?
Yes, it is available in versions compliant with MIL-STD-883.
- Can the AD589SH be used as a positive or negative reference?
Yes, it can be operated as both a positive and negative reference, and also supports floating operation.
