MAX6174:High-Precision Voltage References with Temperature Sensor

The MAX6173–MAX6177 are low-noise, high-precision voltage references. The devices feature 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 MAX6173–MAX6177 provide a TEMP output where the output voltage is proportional to the die temperature, making the devices suitable for a wide variety of temperature-sensing applications. The devices also provide a TRIM input, allowing fine trimming of the output voltage with a resistive divider network. Low temperature drift and low noise make the devices ideal for use with high-resolution A/D or D/A converters. The MAX6173–MAX6177 provide accurate preset +2.5V, +3.3V, +4.096V, +5.0V, and +10V reference voltages and accept input voltages up to +40V. The devices draw 320µA (typ) of supply current and source 30mA or sink 2mA of load current. The MAX6173–MAX6177 use bandgap technology for low-noise performance and excellent accuracy. The MAX6173–MAX6177 do not require an output bypass capacitor for stability, and are stable with capacitive loads up to 100µF. Eliminating the output bypass capacitor saves valuable board area in space-critical applications. The MAX6173–MAX6177 are available in an 8-pin SO package and operate over the automotive (-40°C to +125°C) temperature range.

Key Features
  • 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)
  • 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
  • Short-Circuit Protected
MAX6173, MAX6174, MAX6175, MAX6176, MAX6177: Typical Operating Circuit
MAX6173, MAX6174, MAX6175, MAX6176, MAX6177: Typical Operating Circuit
Applications/Uses
  • ADCs
  • DACs
  • Digital Voltmeters
  • Threshold Detectors
  • Voltage Regulators
DataSheet
titleDownload file
MAX6173-MAX6177 Data SheetMAX6173-MAX6177.pdf
Parametrics
Part NumberVOUT
(V)
Temp. Coeff.
(ppm/°C)
Initial Accuracy
(% max)
Calibration MethodISUPPLY
(µA)
VSUPPLY
(V)
VSUPPLY
(V)
Noise 0.1Hz to 10Hz
(µVpp)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
max@ +25°CmaxminmaxtypSee Notes
MAX61732.530.06Trim/Temp.6004.5404-40 to +125SOIC(N)/8$2.66 @1k
MAX61744.0960.06-7SOIC(N)/8$2.66 @1k
MAX617550.06-9SOIC(N)/8$2.66 @1k
MAX6176100.05-18SOIC(N)/8$2.54 @1k
MAX61773.30.05-5SOIC(N)/8$4.02 @1k
Quality and Environmental Data
Related Products
  • MAX6143:High-Precision Voltage Reference with Temperature Sensor
  • REF01:+5V, +10V Precision Voltage References
  • REF02:+5V, +10V Precision Voltage References
  • MAX675:Precision, 5V Voltage Reference, Replaced MAX673
  • MAX674:+10V Precision Voltage Reference
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6174AASANo Longer AvailableMAX6174AASA+SOIC(N),;8 pin;30.9 mm²-40°C to +125°CNo
MAX6174AASA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX6174AASA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX6174AASA-TNo Longer AvailableMAX6174AASA+TN.SO;8 pin-40°C to +125°CSee data sheet
MAX6174BASANo Longer AvailableMAX6174BASA+SOIC(N),;8 pin;30.9 mm²-40°C to +125°CNo
MAX6174BASA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX6174BASA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX6174BASA-TNo Longer AvailableMAX6174BASA+TN.SO;8 pin-40°C to +125°CSee data sheet
MAX6174BASA/V+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX6174BASA/V+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX6173-MAX6177.pdf MAX6177
Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface MAX5492
MAX6174.pdf MAX6174
MAX6173-MAX6177.pdf MAX6177