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Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References

Product Details

The MAX6161–MAX6168 are precision, low-dropout, micropower voltage references. These three-terminal devices operate with an input voltage range from (VOUT + 200mV) to 12.6V and are available with output voltage options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, and 5V. They feature a proprietary curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low temperature coefficient of 5ppm/°C (max) and an initial accuracy of ±2mV (max). Specifications apply to the extended temperature range (-40°C to +85°C).

The MAX6161–MAX6168 typically draw only 100µA of supply current and can source 5mA (4mA for MAX6161) or sink 2mA of load current. Unlike conventional shunt-mode (two-terminal) references that waste supply current and require an external resistor, these devices offer a supply current that is virtually independent of the supply voltage (8µA/V variation) and do not require an external resistor. Additionally, the internally compensated devices do not require an external compensation capacitor. Eliminating the external compensation capacitor saves valuable board area in space-critical applications. Low dropout voltage and supply independent, ultra-low supply current make these devices ideal for battery-operated, high-performance, low-voltage systems.

The MAX6161–MAX6168 are available in 8-pin SO packages.

Key Features

  • ±2mV (max) Initial Accuracy
  • 5ppm/°C (max) Temperature Coefficient
  • 5mA Source Current at 0.9mV/mA
  • 2mA Sink Current at 2.5mV/mA
  • Stable with 1µF Capacitive Loads
  • No External Capacitor Required
  • 100µA (typ) Quiescent Supply Current
  • 200mV (max) Dropout at 1mA Load Current
  • Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, 5V

Applications/Uses

  • A/D Converters
  • Cell Phones
  • Notebook Computers
  • PDAs, GPSs, DMMs
  • Portable Battery-Powered Systems
  • Precision 3V/5V Systems
Parametric specs for All Voltage References
VOUT (V) 1.25
Temp. Coeff. (ppm/°C) (max) 10
ISUPPLY (µA) (max) 120
Initial Accuracy (% max) (@ +25°C) 0.16
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 12.6
Noise 0.1Hz to 10Hz (µVpp) (typ) 20
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC(N)/8
Budgetary
Price (See Notes)
$2.50 @1k
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Simplified Block Diagram

MAX6161, MAX6162, MAX6163, MAX6164, MAX6165, MAX6166, MAX6167, MAX6168: Typical Operating Circuit MAX6161, MAX6162, MAX6163, MAX6164, MAX6165, MAX6166, MAX6167, MAX6168: Typical Operating Circuit Zoom icon

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Parameters

Parametric specs for All Voltage References
VOUT (V) 1.25
Temp. Coeff. (ppm/°C) (max) 10
ISUPPLY (µA) (max) 120
Initial Accuracy (% max) (@ +25°C) 0.16
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 12.6
Noise 0.1Hz to 10Hz (µVpp) (typ) 20
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC(N)/8
Budgetary
Price (See Notes)
$2.50 @1k

Key Features

  • ±2mV (max) Initial Accuracy
  • 5ppm/°C (max) Temperature Coefficient
  • 5mA Source Current at 0.9mV/mA
  • 2mA Sink Current at 2.5mV/mA
  • Stable with 1µF Capacitive Loads
  • No External Capacitor Required
  • 100µA (typ) Quiescent Supply Current
  • 200mV (max) Dropout at 1mA Load Current
  • Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, 5V

Applications/Uses

  • A/D Converters
  • Cell Phones
  • Notebook Computers
  • PDAs, GPSs, DMMs
  • Portable Battery-Powered Systems
  • Precision 3V/5V Systems

Description

The MAX6161–MAX6168 are precision, low-dropout, micropower voltage references. These three-terminal devices operate with an input voltage range from (VOUT + 200mV) to 12.6V and are available with output voltage options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, and 5V. They feature a proprietary curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low temperature coefficient of 5ppm/°C (max) and an initial accuracy of ±2mV (max). Specifications apply to the extended temperature range (-40°C to +85°C).

The MAX6161–MAX6168 typically draw only 100µA of supply current and can source 5mA (4mA for MAX6161) or sink 2mA of load current. Unlike conventional shunt-mode (two-terminal) references that waste supply current and require an external resistor, these devices offer a supply current that is virtually independent of the supply voltage (8µA/V variation) and do not require an external resistor. Additionally, the internally compensated devices do not require an external compensation capacitor. Eliminating the external compensation capacitor saves valuable board area in space-critical applications. Low dropout voltage and supply independent, ultra-low supply current make these devices ideal for battery-operated, high-performance, low-voltage systems.

The MAX6161–MAX6168 are available in 8-pin SO packages.

Simplified Block Diagram

MAX6161, MAX6162, MAX6163, MAX6164, MAX6165, MAX6166, MAX6167, MAX6168: Typical Operating Circuit MAX6161, MAX6162, MAX6163, MAX6164, MAX6165, MAX6166, MAX6167, MAX6168: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.