Overview
The REF4132B33DBVRQ1 from Texas Instruments is a low-drift, low-power, high-precision CMOS voltage reference. This device is part of the REF4132-Q1 family, which is designed for excellent initial voltage accuracy and minimal temperature drift. It features a low dropout voltage, allowing operation with a supply voltage just 50 mV above the output voltage. The REF4132B33DBVRQ1 is AEC-Q100 qualified, making it suitable for automotive and other high-reliability applications. It is packaged in a small 5-pin SOT-23 footprint, enhancing its suitability for space-constrained designs.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Output Voltage Accuracy (TA = 25°C) | -0.05% | - | 0.05% | % |
| Temperature Coefficient (A Grade) | - | - | 12 ppm/°C | ppm/°C |
| Temperature Coefficient (B Grade) | - | - | 30 ppm/°C | ppm/°C |
| Operating Temperature Range | -40°C | - | 125°C | °C |
| Output Current | -10 mA | - | 10 mA | mA |
| Quiescent Current (Active Mode) | 80 μA | 100 μA | 100 μA | μA |
| Output Noise (0.1 Hz to 10 Hz) | - | - | 15 µVPP/V | µVPP/V |
| Long-term Stability | - | - | 30 ppm/1000 hrs | ppm/1000 hrs |
| Package | - | - | 5-pin SOT-23 | - |
Key Features
- Extremely low dropout voltage, allowing operation with a supply voltage just 50 mV above the output voltage.
- AEC-Q100 qualified for automotive applications with an operating temperature range of -40°C to 125°C.
- High precision with ±0.05% initial accuracy and low temperature drift (12 ppm/°C for A grade, 30 ppm/°C for B grade).
- Low quiescent current of 100 μA (maximum) and low output noise of 15 µVPP/V.
- Excellent long-term stability of 30 ppm/1000 hours.
- Small footprint in a 5-pin SOT-23 package, offering pin-to-pin replacement for LM4128 and LM4132.
- Low power consumption and high signal integrity, making it suitable for noise-critical systems and high-resolution data converters.
- Enable pin for low-power shutdown mode, reducing quiescent current to 2.5 µA (typical).
Applications
- Automotive systems: ADAS front camera, ADAS surround view system ECU, traction inverter, automotive DC/DC converter, HEV/EV On-board (OBC) & wireless charger.
- Data acquisition (DAQ) systems.
- PLC analog I/O modules.
- Field transmitters.
- Motor drive control modules.
- Battery test equipment.
- LCR meters.
- High-temperature sensors and automotive head units.
Q & A
- What is the operating temperature range of the REF4132B33DBVRQ1?
The operating temperature range is -40°C to 125°C.
- What is the initial accuracy of the REF4132B33DBVRQ1?
The initial accuracy is ±0.05%.
- What is the maximum quiescent current of the REF4132B33DBVRQ1?
The maximum quiescent current is 100 μA.
- What is the output noise of the REF4132B33DBVRQ1 in the 0.1 Hz to 10 Hz range?
The output noise is 15 µVPP/V.
- Can the REF4132B33DBVRQ1 be used in automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the package type of the REF4132B33DBVRQ1?
The package type is 5-pin SOT-23.
- How much output current can the REF4132B33DBVRQ1 deliver?
The device can deliver ±10 mA of output current.
- What is the long-term stability of the REF4132B33DBVRQ1?
The long-term stability is 30 ppm/1000 hours.
- Can the REF4132B33DBVRQ1 be placed in a low-power mode?
Yes, it can be placed in a low-power shutdown mode by pulling the ENABLE pin low.
- What is the typical quiescent current in shutdown mode?
The typical quiescent current in shutdown mode is 2.5 µA.
