Overview
The TL4050B25QDBZRQ1 is a precision micropower shunt voltage reference from Texas Instruments. This device is part of the TL4050-Q1 family, known for its versatility and ease of use in a wide range of applications. It is a two-terminal fixed-output device that does not require external capacitors for operation and is stable with all capacitive loads. The TL4050B25QDBZRQ1 offers low dynamic impedance, low noise, and a low temperature coefficient, ensuring a stable output voltage over a wide range of operating currents and temperatures.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Max | |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage (VZ) | IZ = 100 μA, 25°C | V | 2.5 | 2.5 | 2.5 |
| Reverse Breakdown Voltage Tolerance (ΔVZ) | IZ = 100 μA, Full Range | mV | -18 | - | 18 |
| Minimum Cathode Current (IZ,min) | Full Range | μA | 65 | - | - |
| Average Temperature Coefficient of Reverse Breakdown Voltage (αVZ) | IZ = 100 μA, Full Range | ppm/°C | -50 | - | 50 |
| Reverse Dynamic Impedance (ZZ) | f = 120 Hz, IAC = 0.1 IZ, 25°C | Ω | 0.3 | - | - |
| Wideband Noise (eN) | 10 Hz ≤ f ≤ 10 kHz, 25°C | μVRMS | 41 | - | - |
| Long-term Stability of Reverse Breakdown Voltage | t = 1000 h, TA = 25°C ± 0.1°C, IZ = 100 μA | ppm | 120 | - | - |
| Thermal Hysteresis (VHYST) | ΔTA = –40°C to 125°C | mV | - | - | 0.7 |
| Operating Junction Temperature (TJ) | - | °C | - | - | 150 |
| Storage Temperature Range (Tstg) | - | °C | -65 | - | 150 |
Key Features
- Available in extended temperature range: –40°C to 125°C, qualified for automotive applications.
- Fixed output voltages of 2.048 V, 2.5 V, 4.096 V, and 5 V.
- Tight output tolerances and low temperature coefficient: Max 0.1%, 50 ppm/°C for A grade, Max 0.2%, 50 ppm/°C for B grade, and Max 0.5%, 50 ppm/°C for C grade.
- Low output noise: 41 μVRMS typical.
- Wide operating current range: 60 μA typical to 15 mA.
- Stable with all capacitive loads; no output capacitor required.
- Low dynamic impedance and low noise.
- Packaged in space-saving SOT-23-3 and SC-70 packages.
Applications
- Data-acquisition systems.
- Power supplies and power-supply monitors.
- Instrumentation and test equipment.
- Process controls.
- Precision audio.
- Automotive electronics.
- Energy management.
- Battery-powered equipment.
Q & A
- What is the TL4050B25QDBZRQ1 used for?
The TL4050B25QDBZRQ1 is a precision micropower shunt voltage reference used in various applications such as data-acquisition systems, power supplies, instrumentation, and automotive electronics.
- What are the available output voltages for the TL4050-Q1 family?
The TL4050-Q1 family offers fixed output voltages of 2.048 V, 2.5 V, 4.096 V, and 5 V.
- What is the temperature range for the TL4050B25QDBZRQ1?
The device operates over an ambient temperature range of –40°C to 125°C.
- Does the TL4050B25QDBZRQ1 require an output capacitor for stability?
No, the TL4050B25QDBZRQ1 does not require an output capacitor for stability and is stable with all capacitive loads.
- What are the typical noise characteristics of the TL4050B25QDBZRQ1?
The device has a wideband noise of 41 μVRMS typical over the frequency range of 10 Hz to 10 kHz.
- What is the minimum cathode current required for the TL4050B25QDBZRQ1?
The minimum cathode current (IZ,min) is 65 μA.
- What is the maximum operating junction temperature for the TL4050B25QDBZRQ1?
The maximum operating junction temperature (TJ) is 150°C.
- In what packages is the TL4050B25QDBZRQ1 available?
The device is available in SOT-23-3 and SC-70 packages.
- What are the key applications of the TL4050B25QDBZRQ1 in automotive systems?
The device is used in automotive electronics, including power supplies, instrumentation, and energy management systems.
- How does the TL4050B25QDBZRQ1 ensure stability across different operating currents?
The device ensures stability through its low dynamic impedance and low temperature coefficient, making it stable over a wide range of operating currents and temperatures.
