Overview
The AD589KH is a 2-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. It is designed to offer high stability, primarily due to the matching and thermal tracking of the on-chip components. The AD589KH utilizes Analog Devices' precision bipolar processing and thin-film technology to achieve excellent performance at a low cost.
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 | mV | |
| Dynamic Output Impedance | 0.6 | 2 | 2 | Ω |
| RMS Noise Voltage (10 Hz < f < 10 kHz) | 5 | 5 | µV | |
| Temperature Coefficient | 10 | 50 | 100 | ppm/°C |
| Turn-On Settling Time to 0.1% | 25 | 25 | µs | |
| Operating Current | 0.05 | 5 | 5 | mA |
| Operating Temperature | 0 | 70 | °C | |
| Package Option | Metal Can (H-02A) |
Key Features
- Temperature-compensated bandgap voltage reference with a fixed 1.23 V output voltage.
- Operates with input currents between 50 µA and 5.0 mA.
- No external components required to maintain full accuracy under changing load conditions due to low output impedance.
- High stability ensured by the matching and thermal tracking of on-chip components.
- Available in various grades for different temperature ranges (0°C to +70°C and -55°C to +125°C).
- Low cost and high performance due to precision bipolar processing and thin-film technology.
Applications
The AD589KH is suitable for a variety of applications where a stable and accurate voltage reference is required. These include:
- Power supply systems needing a precise voltage reference.
- Analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) for accurate voltage referencing.
- Instrumentation and measurement equipment requiring stable voltage references.
- Industrial control systems and automation where precise voltage levels are necessary.
Q & A
- What is the output voltage of the AD589KH? The AD589KH provides a fixed output voltage of 1.23 V.
- What is the input current range for the AD589KH? The input current range is between 50 µA and 5.0 mA.
- Does the AD589KH require external components for operation? No, the AD589KH does not require external components to maintain full accuracy under changing load conditions.
- What is the operating temperature range for the AD589KH? The AD589KH operates within a temperature range of 0°C to +70°C.
- What are the key features of the AD589KH? Key features include temperature compensation, low output impedance, high stability, and low cost.
- What are some common applications of the AD589KH? Common applications include power supply systems, ADCs and DACs, instrumentation and measurement equipment, and industrial control systems.
- What is the dynamic output impedance of the AD589KH? The dynamic output impedance is typically 2 Ω.
- What is the RMS noise voltage of the AD589KH? The RMS noise voltage is typically 5 µV over the frequency range of 10 Hz to 10 kHz.
- How does the AD589KH achieve high stability? High stability is achieved through the matching and thermal tracking of on-chip components.
- What packaging options are available for the AD589KH? The AD589KH is available in a metal can (H-02A) package.
