Overview
The LT1009CLP, manufactured by Texas Instruments, is a precision-trimmed 2.5-V shunt regulator. This integrated reference circuit is known for its low dynamic impedance and wide operating current range, making it suitable for various precision voltage reference applications. The LT1009CLP does not require adjustments but includes an adjustable terminal to fine-tune the reference voltage by ±5% if needed. It is available in different packages, including the LP, D, and PW packages, each with specific temperature and voltage tolerances.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Reference Voltage (VZ) | 2.495 | 2.5 | 2.505 | V |
| Reverse Breakdown Voltage | 2.49 | 2.5 | 2.51 | V |
| Reverse Dynamic Impedance (rZ) | 0.2 | 0.4 | 1.0 | Ω |
| Average Temperature Coefficient (ΔVZ/ΔTemp) | 15 | 25 | 35 | ppm/°C |
| Operating Temperature Range | –40 | 85 | °C | |
| Long-Term Stability | 20 | ppm/kHr |
Key Features
- Precision-trimmed 2.5-V reference voltage with low initial tolerance (±5 mV in LP package, ±10 mV in D and PW packages).
- Low dynamic impedance and wide operating current range.
- Adjustable reference voltage by ±5% using the ADJ terminal.
- High temperature stability with an average temperature coefficient of 15-35 ppm/°C.
- Long-term stability of 20 ppm/kHr.
- Available in various packages including LP, D, and PW.
Applications
- 5-V system references.
- 8-bit analog-to-digital converter (ADC) and digital-to-analog converter (DAC) references.
- Power-supply monitors.
- Digital voltmeters and current-loop measurement and control systems.
Q & A
- What is the reference voltage of the LT1009CLP?
The reference voltage of the LT1009CLP is 2.5 V with a tolerance of ±5 mV in the LP package and ±10 mV in the D and PW packages.
- What is the operating temperature range of the LT1009CLP?
The LT1009CLP operates from –40°C to 85°C.
- Can the reference voltage of the LT1009CLP be adjusted?
- What is the dynamic impedance of the LT1009CLP?
The reverse dynamic impedance is typically 0.4 Ω.
- What are some common applications of the LT1009CLP?
- What is the long-term stability of the LT1009CLP?
- What packages is the LT1009CLP available in?
- What is the average temperature coefficient of the LT1009CLP?
- Can the LT1009CLP replace other voltage reference components?
- Is the LT1009CLP RoHS compliant?
