Overview
The LM4040A20IDBZR is a precision micropower shunt voltage reference produced by Texas Instruments. This device is part of the LM4040 series, which offers a range of fixed output voltages and is designed for versatility and ease of use. The LM4040A20IDBZR specifically provides a fixed output voltage of 2.048V with high accuracy and stability. It is ideal for applications requiring a reliable voltage reference with low noise and low temperature coefficient.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Output Voltage (VZ) | 2.048 | 2.048 - 2 | 2.048 + 2 | V |
| Output Voltage Tolerance (ΔVZ) | - | -2 | 2 | mV |
| Minimum Cathode Current (IZ,min) | 45 | 45 | 75 | μA |
| Maximum Output Current | - | - | 15 | mA |
| Average Temperature Coefficient (αVZ) | ±15 | ±15 | ±100 | ppm/°C |
| Operating Temperature Range | - | -40 | 85 | °C |
| Package Type | SOT-23 (DBZ) | - | - | - |
| Package Pins | 3 | - | - | - |
Key Features
- Fixed output voltage of 2.048V with tight output tolerances (0.1% for A grade, 0.2% for B grade, 0.5% for C grade, and 1.0% for D grade)
- Low temperature coefficient: 100 ppm/°C for A, B, and C grades, and 150 ppm/°C for D grade
- Low output noise: 35µVRMS typical
- Wide operating current range: 45µA to 15mA
- Stable with all capacitive loads; no external capacitors required
- Available in space-saving SC-70 and SOT-23-3 packages
- Operates over an ambient temperature range of –40°C to 85°C (LM4040xI) or –40°C to 125°C (LM4040xQ)
Applications
The LM4040A20IDBZR is suitable for a variety of applications where a precise and stable voltage reference is required. These include:
- Portable electronics due to its low power consumption and small package size
- Industrial control systems where stable voltage references are crucial
- Automotive systems that require reliable voltage references over a wide temperature range
- Medical devices that demand high accuracy and low noise voltage references
- General-purpose voltage regulation in various electronic circuits
Q & A
- What is the output voltage of the LM4040A20IDBZR?
The output voltage of the LM4040A20IDBZR is 2.048V
- What are the available output voltage tolerances for the LM4040 series?
The LM4040 series offers output voltage tolerances of 0.1% (A grade), 0.2% (B grade), 0.5% (C grade), and 1.0% (D grade)
- What is the minimum cathode current required for the LM4040A20IDBZR?
The minimum cathode current required is 45µA
- Does the LM4040A20IDBZR require external capacitors for operation?
No, the LM4040A20IDBZR does not require external capacitors for operation and is stable with all capacitive loads
- What is the operating temperature range for the LM4040A20IDBZR?
The operating temperature range is –40°C to 85°C for the LM4040xI and –40°C to 125°C for the LM4040xQ
- What package types are available for the LM4040A20IDBZR?
The LM4040A20IDBZR is available in SOT-23 (DBZ) and SC-70 packages
- What is the maximum output current of the LM4040A20IDBZR?
The maximum output current is 15mA
- What is the average temperature coefficient of the LM4040A20IDBZR?
The average temperature coefficient is ±15 ppm/°C for typical conditions and up to ±100 ppm/°C over the full range
- Is the LM4040A20IDBZR suitable for portable applications?
Yes, it is suitable for portable applications due to its low power consumption and small package size
- What is the noise level of the LM4040A20IDBZR?
The noise level is typically 35µVRMS
