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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 volt-
age options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V,
4.5V, and 5V. They feature a proprietary curvature-cor-
rection 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 conven-
tional shunt-mode (two-terminal) references that waste
supply current and require an external resistor, these
devices offer a supply current that is virtually indepen-
dent of the supply voltage (8µA/V variation) and do not
require an external resistor. Additionally, the internally
compensated devices do not require an external com-
pensation capacitor. Eliminating the external compen-
sation 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-perfor-
mance, low-voltage systems.
The MAX6161–MAX6168 are available in 8-pin SO
packages.
________________________Applications
Analog-to-Digital Converters (ADCs)
Portable Battery-Powered Systems
Notebook Computers
PDAs, GPS, DMMs
Cellular Phones
Precision +3V/+5V Systems
____________________________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
19-1650; Rev 3; 8/05
MAX6161–MAX6168
Precision, Micropower, Low-Dropout, High-
Output-Current, SO-8 Voltage References
________________________________________________________________ Maxim Integrated Products 1
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
___________________Pin Configuration
*Insert the code for the desired initial accuracy and temperature
coefficient (from the Selector Guide) in the blank to complete
the part number.
Typical Operating Circuit and Selector Guide appear at end
of data sheet.
PART*
TEMP RANGE
PIN-
PACKAGE
OUTPUT
VOLTAGE
(V)
MAX6161_ESA
-40°C to +85°C
8 SO 1.250
MAX6162_ESA
-40°C to +85°C
8 SO 2.048
MAX6163_ESA
-40°C to +85°C
8 SO 3.000
MAX6164_ESA
-40°C to +85°C
8 SO 4.096
MAX6165_ESA
-40°C to +85°C
8 SO 5.000
MAX6166_ESA
-40°C to +85°C
8 SO 2.500
MAX6167_ESA
-40°C to +85°C
8 SO 4.500
MAX6168_ESA
-40°C to +85°C
8 SO 1.800
Ordering Information
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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