Overview
The LT1009CLPM, produced by Texas Instruments, is a precision-trimmed 2.5-V shunt regulator diode. It is known for its low dynamic impedance and wide operating current range, making it suitable for various precision voltage reference applications. The device features a maximum initial tolerance of ±5 mV in the LP package and ±10 mV in the D and PW packages, achieved through on-chip trimming. This trimming minimizes the initial voltage tolerance and the temperature coefficient, ensuring high stability over a range of temperatures.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Reference Voltage (VZ) | V | 2.495 | 2.5 | 2.505 |
| Reverse Dynamic Impedance (rZ) | Ω | 0.2 | 0.4 | 1.0 |
| Temperature Coefficient (ΔVZ/ΔT) | ppm/°C | 15 | 25 | 35 |
| Operating Temperature Range | °C | –40 | 85 | |
| Long-Term Stability | ppm/kHr | 20 |
Key Features
- Precision Voltage Reference: The LT1009CLPM offers a precise 2.5-V reference voltage with a maximum initial tolerance of ±5 mV in the LP package and ±10 mV in the D and PW packages.
- Low Dynamic Impedance: It features low dynamic impedance, ensuring stable operation over a wide range of currents.
- Adjustable Reference Voltage: The device includes an adjustment terminal (ADJ) that allows the reference voltage to be adjusted by ±5% to eliminate system errors.
- Wide Operating Current Range: The LT1009CLPM can operate over a wide current range, making it versatile for various applications.
- Temperature Stability: The device is characterized for operation from –40°C to 85°C, with a temperature coefficient of 15 to 35 ppm/°C.
Applications
- 5-V System References: The LT1009CLPM is suitable for use in 5-V system references due to its precise and stable voltage output.
- Analog-to-Digital and Digital-to-Analog Converters: It can be used as a reference voltage for 8-bit ADCs and DACs.
- Power-Supply Monitors: The device is useful in power-supply monitoring applications where precise voltage references are required.
- Digital Voltmeters and Current-Loop Measurement and Control Systems: The LT1009CLPM can be used in digital voltmeters and current-loop measurement and control systems due to its precision and stability).
Q & A
- What is the reference voltage of the LT1009CLPM?
The reference voltage of the LT1009CLPM is 2.5 V).
- What is the maximum initial tolerance of the LT1009CLPM in the LP package?
The maximum initial tolerance in the LP package is ±5 mV).
- What is the operating temperature range of the LT1009CLPM?
The operating temperature range is from –40°C to 85°C).
- Can the reference voltage of the LT1009CLPM be adjusted?
- What is the typical reverse dynamic impedance of the LT1009CLPM?
The typical reverse dynamic impedance is 0.4 Ω).
- What are some common applications of the LT1009CLPM?
- What is the long-term stability of the LT1009CLPM?
- Can the LT1009CLPM replace other voltage reference devices?
- What is the temperature coefficient of the LT1009CLPM?
- Where can I find more detailed specifications and support for the LT1009CLPM?
