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

 

Part Number	Replacement	Explanation

Description

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The MAX6161–MAX6168 are precision, low-dropout, micropower voltage references. These three-terminal devices operate with an input voltage range from (V_OUT + 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.

MAX6161, MAX6162, MAX6163, MAX6164, MAX6165, MAX6166, MAX6167, MAX6168: Typical Operating Circuit Enlarge+

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