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. A low-dropout voltage and a 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.
The MAX6161–MAX6168 family provides high‑accuracy voltage references with very low temperature coefficient and low quiescent current, making them ideal for battery‑powered and space‑constrained designs. They operate from a supply voltage of 2.5 V to 12.6 V and offer source currents up to 5 mA and sink currents up to 2 mA.
Key features include ±2 mV initial accuracy, 5 ppm/°C temperature coefficient, 200 mV maximum dropout at 1 mA load, and the ability to operate without external compensation capacitors. The devices are supplied in 8‑pin SO packages and are suitable for ADCs, portable systems, and precision power supplies.
| Output Voltage Options | 1.25 V, 1.8 V, 2.048 V, 2.5 V, 3 V, 4.096 V, 4.5 V, 5 V |
|---|---|
| Quiescent Supply Current | 125‑150 µA (typ 100 µA) |
| Temperature Coefficient | 5 ppm/°C (max) |
| Dropout Voltage (1 mA load) | 200 mV (max) |
| Source Current | 5 mA |
| Sink Current | 2 mA |
Typical quiescent supply current is about 100 µA, with a specified range of 125‑150 µA.
The family provides 1.25 V, 1.8 V, 2.048 V, 2.5 V, 3 V, 4.096 V, 4.5 V, and 5 V outputs.
The temperature coefficient is up to 5 ppm/°C (maximum).
The maximum dropout voltage is 200 mV at a 1 mA load.