Datasheet MAX6143 (Maxim)

19-3168; Rev 1; 4/04
High-Precision Voltage Reference with Temperature Sensor MAX6143 General Description Features
The MAX6143 is a low-noise, high-precision voltage ref- ♦
Wide (VOUT + 2V) to +40V Supply Voltage Range
erence. The device features a proprietary temperature- ♦
Excellent Temperature Stability: 3ppm/
°
C (max)
coefficient curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low ♦
Tight Initial Accuracy: 0.05% (max)
3ppm/°C temperature coefficient and excellent ±0.06% ♦
Low Noise: 3.8µVP-P (typ at 2.5V Output)
initial accuracy. The MAX6143 provides a TEMP output ♦
Sources up to 30mA Output Current
where the output voltage is proportional to die tempera- ture, making the device suitable for a wide variety of ♦
Low Supply Current: 450µA (max at +25
°
C)
temperature-sensing applications. The device also pro- ♦
Low 0.01µA Shutdown Current
vides a TRIM input, allowing fine trimming of the output ♦
Linear Temperature Transducer Voltage Output
voltage with a resistive-divider network. Low tempera- ture drift and low noise make the MAX6143 ideal for use ♦
+2.5V, +3.3V, +4.096V, +5.0V, or +10V Output
with high-resolution A/D or D/A converters.
Voltages
The MAX6143 provides accurate preset +2.5V, +3.3V, ♦
Wide Operating Temperature Range: -40
°
C to
+4.096V, +5.0V, and +10V reference voltages and
+125
°
C
accepts input voltages up to +40V. The device draws ♦
No External Capacitors Required for Stability
340µA of supply current and sources 30mA or sinks 2mA
Typical Operating Circuit
of load current. The active-low shutdown feature (SHDN) reduces supply current to 0.01µA. The MAX6143 uses ( V bandgap technology for low-noise performance and OUT + 2V) TO 40V INPUT excellent accuracy. The MAX6143 does not require an output bypass capacitor for stability, and is stable with IN capacitive loads up to 100µF. Eliminating the output REFERENCE SHDN OUT OUTPUT bypass capacitor saves valuable board area in space- critical applications. * MAX6143 * The MAX6143 is available in an 8-pin SO package and TEMP TRIM operates over the automotive (-40°C to +125°C) tem- perature range. GND * *OPTIONAL.
Applications
A/D Converters Voltage Regulators D/A Converters Threshold Detectors
Pin Configuration appears at end of data sheet.
Digital Voltmeters
Ordering Information/Selector Guide PIN- OUTPUT TEMPERATURE COEFFICIENT INITIAL PART TEMP RANGE PACKAGE VOLTAGE (V) (ppm/
°
C) 40
°
C TO +125
°
C ACCURACY (%)
MAX6143AASA25 -40°C to +125°C 8 SO 2.500 3 0.06 MAX6143BASA25 -40°C to +125°C 8 SO 2.500 10 0.10 MAX6143AASA33 -40°C to +125°C 8 SO 3.300 3 0.06 MAX6143BASA33 -40°C to +125°C 8 SO 3.300 10 0.10 MAX6143AASA41 -40°C to +125°C 8 SO 4.096 3 0.06 MAX6143BASA41 -40°C to +125°C 8 SO 4.096 10 0.10 MAX6143AASA50 -40°C to +125°C 8 SO 5.000 3 0.06 MAX6143BASA50 -40°C to +125°C 8 SO 5.000 10 0.10 MAX6143AASA10 -40°C to +125°C 8 SO 10.000 3 0.05 MAX6143BASA10 -40°C to +125°C 8 SO 10.000 10 0.10
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