19-1650; Rev 2; 2/02
Precision, Micropower, Low-Dropout, High-
Output-Current, SO-8 Voltage References
General Description
The MAX6161鈥揗AX6168 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/擄C
(max) and an initial accuracy of 鹵2mV (max).
Specifications apply to the extended temperature range
(-40擄C to +85擄C).
The MAX6161鈥揗AX6168 typically draw only 90碌A(chǔ) 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 (8碌A(chǔ)/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鈥揗AX6168 are available in 8-pin SO
packages.
____________________________Features
o
鹵2mV (max) Initial Accuracy
o
5ppm/擄C (max) Temperature Coefficient
o
5mA Source Current at 0.9mV/mA
o
2mA Sink Current at 2.5mV/mA
o
Stable with 1碌F Capacitive Loads
o
No External Capacitor Required
o
90碌A(chǔ) (typ) Quiescent Supply Current
o
200mV (max) Dropout at 1mA Load Current
o
60碌V/V Line Regulation
o
Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V,
3V, 4.096V, 4.5V, 5V
MAX6161鈥揗AX6168
Ordering Information
PART*
MAX6161_ESA
MAX6162_ESA
MAX6163_ESA
MAX6164_ESA
MAX6165_ESA
MAX6166_ESA
MAX6167_ESA
MAX6168_ESA
TEMP
RANGE
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
PIN-
PACKAGE
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
OUTPUT
VOLTAGE
(V)
1.250
2.048
3.000
4.096
5.000
2.500
4.500
1.800
________________________Applications
Analog-to-Digital Converters (ADCs)
Portable Battery-Powered Systems
Notebook Computers
PDAs, GPS, DMMs
Cellular Phones
Precision +3V/+5V Systems
*Insert
the code for the desired initial accuracy and temperature
coefficient (from the Selector Guide) in the blank to complete
the part number.
___________________Pin Configuration
TOP VIEW
N.C.
IN
N.C.
1
2
3
8
7
N.C.
N.C.
OUT
N.C.
MAX6161鈥?/div>
MAX6168
6
5
GND 4
Typical Operating Circuit and Selector Guide appear at end
of data sheet.
SO
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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