High-Precision Voltage Reference with Temperature Sensor
DescriptionThe MAX6143 is a low-noise, high-precision voltage reference. The device features a proprietary temperature-coefficient curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low 3ppm/°C temperature coefficient and excellent ±0.06% initial accuracy. The MAX6143 provides a TEMP output where the output voltage is proportional to die temperature, making the device suitable for a wide variety of temperature-sensing applications. The device also provides a TRIM input, allowing fine trimming of the output voltage with a resistive-divider network. Low temperature drift and low noise make the MAX6143 ideal for use with high-resolution A/D or D/A converters.
The MAX6143 provides accurate preset +2.5V, +3.3V, +4.096V, +5.0V, and +10V reference voltages and accepts input voltages up to +40V. The device draws 340µA of supply current and sources 30mA or sinks 2mA of load current. The MAX6143 uses bandgap technology for low-noise performance and excellent accuracy. The MAX6143 does not require an output bypass capacitor for stability, and is stable with capacitive loads up to 100µF. Eliminating the output bypass capacitor saves valuable board area in space-critical applications.
The MAX6143 is available in an 8-pin SO package and operates over the automotive (-40°C to +125°C) temperature range.
- Wide (VOUT + 2V) to +40V Supply Voltage Range
- Excellent Temperature Stability: 3ppm/°C (max)
- Tight Initial Accuracy: 0.05% (max)
- Low Noise: 3.8µVP-P (typ at 2.5V Output)
- Sources up to 30mA Output Current
- Low Supply Current: 450µA (max at +25°C)
- Low 0.01µA Shutdown Current
- Linear Temperature Transducer Voltage Output
- +2.5V, +3.3V, +4.096V, +5.0V, or +10V Output Voltages
- Wide Operating Temperature Range: -40°C to +125°C
- No External Capacitors Required for Stability
- A/D Converters
- D/A Converters
- Digital Voltmeters
- Threshold Detectors
- Voltage Regulators
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Tutorial 5059 Thermal Noise Calculator Tutorial
Tutorial 4993 Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface
App Note 4568 Bipolar DC-Voltage Detector Offers Sensitivity and Precision
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Tutorial 719 Understanding Voltage-Reference Topologies and Specifications
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C||Material Composition|
|Tutorial||5664||Managing Noise in the Signal Chain, Part 1: Annoying Semiconductor Noise, Preventable or Inescapable?|
|Tutorial||5059||Thermal Noise Calculator Tutorial|
|Tutorial||4993||Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface|
|App Note||4568||Bipolar DC-Voltage Detector Offers Sensitivity and Precision|
|App Note||4494||Methods for Calibrating Gain Error in Data-Converter Systems|
|Tutorial||719||Understanding Voltage-Reference Topologies and Specifications|