MAXIM MAX6161, MAX6168 Technical data

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.

________________________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

87N.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-

OUTPUT

VOLTAGE

(V)

MAX6161_ESA

8 SO 1.250

MAX6162_ESA

8 SO 2.048

MAX6163_ESA

8 SO 3.000

MAX6164_ESA

8 SO 4.096

MAX6165_ESA

8 SO 5.000

MAX6166_ESA

8 SO 2.500

MAX6167_ESA

8 SO 4.500

MAX6168_ESA

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.

PACKAGE

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

MAX6161–MAX6168

Precision, Micropower, Low-Dropout, High­Output-Current, SO-8 Voltage References

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Voltages Referenced to GND

IN …………............................................................-0.3 to +13.5V

OUT………………........................................-0.3V to (V

IN

+ 0.3V)

Output Short-Circuit Duration to GND or IN (V

IN

≤ 6V) ...Continuous

Output Short-Circuit Duration to GND or IN (V

IN

> 6V)…...........60s

Continuous Power Dissipation (T

A

= +70°C)

8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range………….…………-65°C to +150°C
Lead Temperature (soldering, 10s)……………………….+300°C

ELECTRICAL CHARACTERISTICS—MAX6161 (V

OUT

= 1.25V)

(VIN= +5V, I

OUT

= 0, TA= T

MIN

to T

MAX

, unless otherwise specified. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

MAX6161A

Output Voltage V

OUT

TA = +25°C

MAX6161B

V

MAX6161A 4 10

Output Voltage Temperature
Coefficient (Note 2)

MAX6161B 6 15

ppm/°C

Line Regulation

ΔV

IN

2.5V

<

VIN

<

12.6V 12

µV/V

Sourcing: 0

<

I

OUT

<

4mA 0.5 0.9

Load Regulation

Sinking: -2mA

<

I

OUT

<

0 1.3 2.5

mV/mA

Short to GND 110

OUT Short-Circuit Current I

SC

Short to IN 25

mA

Long-Term Stability

time

1000hr at +25°C 115

ppm/

1000hr

Output Voltage Hysteresis
(Note 3)

cycle

125

ppm

DYNAMIC CHARACTERISTICS

f = 0.1Hz to 10Hz 20

µVp-p

Noise Voltage e

OUT

f = 10Hz to 10kHz 15

µV

RMS

Ripple Rejection

VIN = +5V ±100mV, f = 120Hz 80 dB

Turn-On Settling Time t

R

V

OUT

to 0.1% of final value, C

OUT

= 50pF 50 µs

INPUT CHARACTERISTICS

Supply Voltage Range V

IN

Guaranteed by line-regulation test 2.5

V

Quiescent Supply Current I

IN

125

µA

Change in Supply Current

µA/V

1.248 1.250 1.252

1.246 1.250 1.254

TCV

OUT

ΔV

/

OUT

ΔV

/

OUT

ΔI

OUT

ΔV

/

OUT

ΔV

/

OUT

V

OUT/VIN

ΔIIN/ΔVIN2.5V < VIN < 12.6V 3.2 8.0

150

12.6

150

MAX6161–MAX6168

Precision, Micropower, Low-Dropout, High-

Output-Current, SO-8 Voltage References

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX6168 (V

OUT

= 1.800V)

(VIN= +5V, I

OUT

= 0, TA= T

MIN

to T

MAX

, unless otherwise specified. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

MAX6168A

Output Voltage V

OUT

TA = +25°C

MAX6168B

V

MAX6168A 2 5

Output Voltage Temperature
Coefficient (Note 2)

MAX6168B 4 10

ppm/°C

Line Regulation

ΔV

IN

2.5V ≤ VIN ≥ 12.6V 42

µV/V

Sourcing: 0

<

I

OUT

<

5mA 0.5 0.9

Load Regulation

Sinking: -2mA

<

I

OUT

<

0 1.5 4

mV/mA

Short to GND 110

OUT Short-Circuit Current I

SC

Short to IN 25

mA

Long-Term Stability

time

1000hr at +25°C80

ppm/

1000hr

Output Voltage Hysteresis
(Note 3)

cycle

125

ppm

DYNAMIC CHARACTERISTICS

f = 0.1Hz to 10Hz 22

µVp-p

Noise Voltage e

OUT

f = 10Hz to 10kHz 25

µV

RMS

Ripple Rejection

ΔV

IN

VIN = +5V ±100mV, f = 120Hz 78 dB

Turn-On Settling Time t

R

V

OUT

to 0.1% of final value, C

OUT

= 50pF 100 µs

INPUT CHARACTERISTICS

Supply Voltage Range V

IN

Guaranteed by line-regulation test 2.5

V

Quiescent Supply Current I

IN

100

µA

Change in Supply Current

ΔIIN/ΔV

IN

2.5V

<

VIN

<

12.6V 3.4 8.0

µA/V

TCV

OUT

ΔV

/

OUT

ΔV

/

OUT

ΔI

OUT

ΔV

/

OUT

ΔV

/

OUT

ΔV

/

OUT

1.798 1.800 1.802

1.795 1.800 1.805

200

12.6

120

MAX6161–MAX6168

Precision, Micropower, Low-Dropout, High­Output-Current, SO-8 Voltage References

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX6162 (V

OUT

= 2.048V)

(VIN= +5V, I

OUT

= 0, TA= T

MIN

to T

MAX

, unless otherwise specified. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

MAX6162A

Output Voltage V

OUT

TA = +25°C

MAX6162B

V

MAX6162A 2 5

Output Voltage Temperature
Coefficient (Note 2)

MAX6162B 4 10

ppm/°C

Line Regulation

2.5V

<

V

IN

<

12.6V 42 250

µV/V

Sourcing: 0

<

I

OUT

<

5mA 0.5 0.9

Load Regulation

ΔI

OUT

Sinking: -2mA

<

I

OUT

<

0 1.5 4

mV/mA

Short to GND

OUT Short-Circuit Current I

SC

Short to IN 25

mA

Long-Term Stability

time

1000hr at +25°C80

ppm/

1000hr

Output Voltage Hysteresis
(Note 3)

cycle

ppm

DYNAMIC CHARACTERISTICS

f = 0.1Hz to 10Hz 22

µVp-p

Noise Voltage e

OUT

f = 10Hz to 10kHz 25

µV

RM S

Ripple Rejection

VIN = 5V ±100mV, f = 120Hz 78 dB

Turn-On Settling Time t

R

V

OUT

to 0.1% of final value, C

OUT

= 50pF

µs

INPUT CHARACTERISTICS

Supply Voltage Range V

IN

Guaranteed by line-regulation test 2.5

V

Quiescent Supply Current I

IN

120 µA

Change in Supply Current

µA/V

SYMBOL

TCV

OUT

ΔV

/

OUT

ΔV

/

OUT

ΔV

/

OUT

ΔV

/

OUT

V

OUT/VIN

ΔIIN/ΔVIN2.5V < V

IN

MIN TYP MAX

2.046 2.048 2.050

2.043 2.048 2.053

110

125

100

12.6

100

< 12.6V 3.4 8.0

MAX6161–MAX6168

Precision, Micropower, Low-Dropout, High-

Output-Current, SO-8 Voltage References

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS—MAX6166 (V

OUT

= 2.500V)

(VIN= +5V, I

OUT

= 0, TA= T

MIN

to T

MAX

, unless otherwise specified. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

MAX6166A

Output Voltage V

OUT

TA = +25°C

MAX6166B

V

MAX6166A 2 5

Output Voltage Temperature
Coefficient (Note 2)

MAX6166B 4 10

ppm/°C

Dropout Voltage (Note 4)

I

OUT

= 1mA 50

mV

Line Regulation

ΔV

IN

V

OUT

+ 0.2V

<

V

IN

<

12.6V 60

µV/V

Sourcing: 0

<

I

OUT

<

5mA 0.5 0.9

Load Regulation

Sinking: -2mA

<

I

OUT

<

0 1.6 5

mV/mA

Short to GND 110

OUT Short-Circuit Current I

SC

Short to IN 25

mA

Long-Term Stability

time

1000hr at +25°C80

ppm/

1000hr

Output Voltage Hysteresis
(Note 3)

cycle

125

ppm

DYNAMIC CHARACTERISTICS

f = 0.1Hz to 10Hz 27

µVp-p

Noise Voltage e

OUT

f = 10Hz to 10kHz 30

µV

RMS

Ripple Rejection

VIN = 5V ±100mV, f = 120Hz 76 dB

Turn-On Settling Time t

R

V

OUT

to 0.1% of final value, C

OUT

= 50pF 115 µs

INPUT CHARACTERISTICS

Supply Voltage Range V

IN

Guaranteed by line-regulation test

V

Quiescent Supply Current I

IN

100

µA

Change in Supply Current

V

OUT

+ 0.2V

<

VIN

<

12.6V 3.2 8.0

µA/V

TCV

OUT

VIN - V

OUT

ΔV

/

OUT

ΔV

/

OUT

ΔI

OUT

ΔV

/

OUT

ΔV

/

OUT

V

OUT/VIN

2.498 2.500 2.502

2.495 2.500 2.505

200

250

V

+ 0.2 12.6

OUT

ΔIIN/ΔV

IN

120

MAX6161–MAX6168

Precision, Micropower, Low-Dropout, High­Output-Current, SO-8 Voltage References

6 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX6163 (V

OUT

= 3.000V)

(VIN= +5V, I

OUT

= 0, TA= T

MIN

to T

MAX

, unless otherwise specified. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

MAX6163A

Output Voltage V

OUT

TA = +25°C

MAX6163B

V

MAX6163A 2 5

Output Voltage Temperature
Coefficient (Note 2)

MAX6163B 4 10

ppm/°C

Dropout Voltage (Note 4)

I

OUT

= 1mA 50 200 mV

Line Regulation

ΔV

IN

V

OUT

+ 0.2V

<

VIN

<

12.6V 83 300

µV/V

Sourcing: 0

<

I

OUT

<

5mA 0.5 0.9

Load Regulation

ΔI

OUT Sinking: -2mA

<

I

OUT

<

0 1.8 5

mV/mA

Short to GND

OUT Short-Circuit Current I

SC

Short to IN 25

mA

Long-Term Stability

time

1000hr at +25°C80

ppm/

1000hr

Output Voltage Hysteresis
(Note 3)

cycle

ppm

DYNAMIC CHARACTERISTICS

f = 0.1Hz to 10Hz 35

µVp-p

Noise Voltage e

OUT

f = 10Hz to 10kHz 40

µV

RMS

Ripple Rejection

VIN = 5V ±100mV, f = 120Hz 76 dB

Turn-On Settling Time t

R

V

OUT

to 0.1% of final value, C

OUT

= 50pF

µs

INPUT CHARACTERISTICS

Supply Voltage Range V

IN

Guaranteed by line-regulation test V

OUT

+ 0.2

V

Quiescent Supply Current I

IN

120 µA

Change in Supply Current

V

OUT

+ 0.2V

<

VIN

<

12.6V 3.2 8.0

µA/V

TCV

OUT

VIN - V

OUT

ΔV

/

OUT

ΔV

/

OUT

ΔV

/

OUT

ΔV

/

OUT

V

OUT/VIN

2.998 3.000 3.002

2.995 3.000 3.005

110

125

115

ΔIIN/ΔV

IN

12.6

100