General Description

The MAX6161–MAX6168 are precision, low-dropout,

micropower voltage references. These three-terminal

+ 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 90µA 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

o ±2mV (max) Initial Accuracy

o 5ppm/°C (max) Temperature Coefficient

o 5mA Source Current at 0.9mV/mA

o 2mA Sink Current at 2.5mV/mA

o Stable with 1µF Capacitive Loads

o No External Capacitor Required

o 90µA (typ) Quiescent Supply Current

o 200mV (max) Dropout at 1mA Load Current

o 60µV/V Line Regulation

o Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V,

3V, 4.096V, 4.5V, 5V

19-1650; Rev 2; 2/02

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.