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General Description
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.
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.
Benets and 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
● Analog-to-Digital Converters (ADCs)
● Portable Battery-Powered Systems
● Notebook Computers
● PDAs, GPS, DMMs
● Cellular Phones
● Precision +3V/+5V Systems
Ordering Information, Typical Operating Circuit, and
Selector Guide appear at end of data sheet.
19-1650; Rev 4; 12/08
Pin Conguration
OUT
N.C.GND
1
2
8
7
N.C.
N.C.IN
N.C.
N.C.
SO
+
TOP VIEW
3
4
6
5
MAX6161–
MAX6168
MAX6161–MAX6168 Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
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