Overview
The LT1009CDRG4, 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 highly versatile in various 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 both the initial voltage tolerance and the temperature coefficient. The LT1009CDRG4 does not require adjustments but includes a third terminal (ADJ) that allows the reference voltage to be adjusted by ±5% to eliminate system errors.
Key Specifications
| Parameter | Condition | Min | Typ | Max |
|---|---|---|---|---|
| Reference Voltage (VZ) | IZ = 1 mA | 2.495 V | 2.5 V | 2.505 V |
| Dynamic Impedance (Z) | IZ = 1 mA | 0.6 Ω | ||
| Operating Temperature Range | 0°C to 70°C (LT1009C) | –40°C to 85°C (LT1009I) | ||
| Reverse Breakdown Voltage | IR = 1 mA | 2.495 V | 2.5 V | 2.505 V |
| Storage Temperature Range | –65°C | 150°C | ||
| Lead Temperature (Soldering, 10 sec) | 300°C |
Key Features
- Precision-trimmed 2.5-V reference voltage with a maximum initial tolerance of ±5 mV.
- Low dynamic impedance of 0.6 Ω.
- Wide operating current range.
- No adjustments needed for minimum temperature coefficient.
- Adjustable reference voltage by ±5% using the ADJ terminal.
- Directly interchangeable with LM136 for improved performance.
- Available in 8-lead SOIC, MSOP, and 3-lead TO-92 packages.
Applications
- References for 5-V systems.
- References for 8-bit analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
- Digital voltmeters.
- Current-loop measurement and control systems.
- Power supply monitors.
Q & A
- What is the reference voltage of the LT1009CDRG4?
The reference voltage of the LT1009CDRG4 is 2.5 V.
- What is the maximum initial tolerance of the LT1009CDRG4?
The maximum initial tolerance is ±5 mV in the LP package and ±10 mV in the D and PW packages.
- What is the dynamic impedance of the LT1009CDRG4?
The dynamic impedance is 0.6 Ω.
- What are the operating temperature ranges for the LT1009CDRG4?
The operating temperature ranges are 0°C to 70°C for the LT1009C and –40°C to 85°C for the LT1009I.
- Can the reference voltage of the LT1009CDRG4 be adjusted?
- What packages are available for the LT1009CDRG4?
The device is available in 8-lead SOIC, MSOP, and 3-lead TO-92 packages.
- Is the LT1009CDRG4 interchangeable with other components?
- What are some common applications of the LT1009CDRG4?
- What is the storage temperature range for the LT1009CDRG4?
- What is the lead temperature for soldering the LT1009CDRG4?
