MAXIM MAX6143 Technical data

General Description

The MAX6143 is a low-noise, high-precision voltage ref­erence. The device features a proprietary temperature­coefficient curvature-correction circuit and
laser-trimmed thin-film resistors that result in a very low
3ppm/°C temperature coefficient and excellent ±0.06%
initial accuracy. The MAX6143 provides a TEMP output
where the output voltage is proportional to die tempera­ture, making the device suitable for a wide variety of
temperature-sensing applications. The device also pro­vides a TRIM input, allowing fine trimming of the output
voltage with a resistive-divider network. Low tempera­ture drift and low noise make the MAX6143 ideal for use
with high-resolution A/D or D/A converters.

The MAX6143 provides accurate preset +2.5V, +3.3V,
+4.096V, +5.0V, and +10V reference voltages and
accepts input voltages up to +40V. The device draws
340µA of supply current and sources 30mA or sinks 2mA
of load current. The active-low shutdown feature (SHDN)
reduces supply current to 0.01µA. The MAX6143 uses
bandgap technology for low-noise performance and
excellent accuracy. The MAX6143 does not require an
output bypass capacitor for stability, and is stable with
capacitive loads up to 100µF. Eliminating the output
bypass capacitor saves valuable board area in space­critical applications.

The MAX6143 is available in an 8-pin SO package and
operates over the automotive (-40°C to +125°C) tem­perature range.

Applications

A/D Converters Voltage Regulators
D/A Converters Threshold Detectors
Digital Voltmeters

Features

♦ Wide (V

OUT

+ 2V) to +40V Supply Voltage Range

♦ Excellent Temperature Stability: 3ppm/°C (max)
♦ Tight Initial Accuracy: 0.05% (max)
♦ Low Noise: 3.8µV

P-P

(typ at 2.5V Output)

♦ Sources up to 30mA Output Current
♦ Low Supply Current: 450µA (max at +25°C)
♦ Low 0.01µA Shutdown Current
♦ Linear Temperature Transducer Voltage Output
♦ +2.5V, +3.3V, +4.096V, +5.0V, or +10V Output

Voltages

♦ Wide Operating Temperature Range: -40°C to

+125°C

♦ No External Capacitors Required for Stability

MAX6143

High-Precision Voltage Reference with

Temperature Sensor

________________________________________________________________ Maxim Integrated Products 1

19-3168; Rev 1; 4/04

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.

Pin Configuration appears at end of data sheet.

Ordering Information/Selector Guide

PART TEMP RANGE

PIN-

OUTPUT

TEMPERATURE COEFFICIENT

(ppm/°C) 40°C TO +125°C

INITIAL

ACCURACY (%)

MAX6143AASA25

8 SO 2.500 3 0.06

MAX6143BASA25

8 SO 2.500 10 0.10

MAX6143AASA33

8 SO 3.300 3 0.06

MAX6143BASA33

8 SO 3.300 10 0.10

MAX6143AASA41

8 SO 4.096 3 0.06

MAX6143BASA41

8 SO 4.096 10 0.10

MAX6143AASA50

8 SO 5.000 3 0.06

MAX6143BASA50

8 SO 5.000 10 0.10

MAX6143AASA10

8 SO 10.000 3 0.05

MAX6143BASA10

8 SO 10.000 10 0.10

IN

OUT

GND

*OPTIONAL.

*

*

*

( V

OUT

+ 2V) TO 40V INPUT

REFERENCE
OUTPUT

SHDN

TRIM

TEMP

MAX6143

Typical Operating Circuit

PACKAGE

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

-40°C to +125°C

VOLTAGE (V)

MAX6143

High-Precision Voltage Reference with
Temperature Sensor

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.

IN to GND...............................................................-0.3V to +42V

OUT, SHDN, TRIM, TEMP to GND...............-0.3V to (V

IN

+ 0.3V)

Output Short Circuit to GND.....................................................5s

Continuous Power Dissipation (T

A

= +70°C)

8-Pin SO (derate 5.9mW/°C above +70°C) ..................471mW

Operating Temperature Range ........................-40°C to +125°C

Junction Temperature .....................................................+150°C

Storage Temperature Range ............................-65°C to +150°C

Lead Temperature (soldering, 10s) ................................+300°C

ELECTRICAL CHARACTERISTICS—MAX6143_25 (V

OUT

= 2.5V)

(VIN= V

SHDN

= +5V, TA= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

OUTPUT

MAX6143A_25 (0.06%)

2.5

Output Voltage V

OUT

MAX6143B_25 (0.1%)

2.5

V

Output Adjustment Range

∆V

TRIM

R

POT

= 10kΩ±3 ±6%

MAX6143AASA 1.5 3Output-Voltage
Temperature Coefficient
(Note 2)

TCV

OUT

MAX6143BASA 3 10

ppm/°C

T

A

= +25°C 0.6 5

Line Regulation (Note 3)

4.5V ≤ VIN ≤ 40V

T

A

= -40°C to +125°C 0.8 10

ppm/V

T

A

= +25°C210

Sourcing:
0 ≤ I

OUT

≤ 10mA

T

A

= -40°C to +125°C215

T

A

= +25°C50

Load Regulation (Note 3)

∆V

OUT

/

∆I

OUT

Sinking:

-0.6mA ≤ I

OUT

≤ 0

T

A

= -40°C to +125°C90

ppm/mA

OUT shorted to GND 60

Output Short-Circuit
Current

I

SC

OUT shorted to IN 3

mA

Temperature Hysteresis
(Note 4)

∆V

OUT

/

cycle

ppm

Long-Term Stability

∆V

OUT

/

time

1000 hours at T

A

= +25°C50ppm

DYNAMIC

f = 0.1Hz to 10Hz 3.8

µV

P-P

Noise Voltage e

OUT

f = 10Hz to 1kHz 6.8

µV

RMS

Turn-On Settling Time t

R

To V

OUT

= 0.1% of final value, C

OUT

= 50pF

µs

INPUT

Supply Voltage Range V

IN

Guaranteed by line regulation test 4.5

V

TA = +25°C

Quiescent Supply Current

I

I

N

No load, normal
operation

T

A

= -40°C to +125°C

µA

Shutdown Supply Current

I

SHDN

No load, V

SHDN

<

0.8V

T

A

= -40°C to +125°C

5µA

SYMBOL

No load, TA = +25°C

TA = -40°C to +125°C

∆V

/ ∆V

OUT

IN

MIN TYP MAX

2.4985

2.4975

120

150

300 450

0.01

2.5015

2.5025

500
900

40.0

600

MAX6143

High-Precision Voltage Reference with

Temperature Sensor

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX6143_33 (V

OUT

= 3.3V)

(VIN= V

SHDN

= +10V, TA= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

OUTPUT

MAX6143A_33 (0.06%)

3.3

Output Voltage V

OUT

MAX6143B_33 (0.1%)

3.3

V

Output Adjustment Range ∆V

TRIMRPOT

= 10kΩ ±3 ±6%

MAX6143AASA 1.5 3

Output-Voltage
Temperature Coefficient
(Note 2)

MAX6143BASA 3 10

ppm/°C

TA = +25°C 0.6 5
Line Regulation (Note 3)

∆V

OUT

/

∆V

IN

5.3V ≤ VIN ≤ 40V
T

A

= -40°C to +125°C 0.8 10

ppm/V

TA = +25°C210

Sourcing:
0 ≤ I

OUT

≤ 10mA

T

A

= -40°C to +125°C215

TA = +25°C50

Load Regulation (Note 3)

∆V

OUT

/

∆I

OUT

Sinking:

-0.6mA ≤ I

OUT

≤ 0

T

A

= -40°C to +125°C90

ppm/

mA

OUT shorted to GND 60

Output Short-Circuit Current

I

SC

OUT shorted to IN 3

mA

Temperature Hysteresis
(Note 4)

∆V

OUT

/

cycle

ppm

Long-Term Stability

∆V

OUT

/

time

1000 hours at T

A

= +25°C50

ppm

DYNAMIC

f = 0.1Hz to 10Hz 5

µV

P-P

Noise Voltage e

OUT

f = 10Hz to 1kHz 9.3

µV

RMS

Turn-On Settling Time t

R

To V

OUT

= 0.1% of final value, C

OUT

= 50pF 180 µs

ELECTRICAL CHARACTERISTICS—MAX6143_25 (V

OUT

= 2.5V) (continued)

(VIN= V

SHDN

= +5V, TA= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SHUTDOWN (SHDN)

Logic-High Input Voltage

V

IH

2.0 V

Logic-Low Input Voltage V

IL

0.8 V

Logic-High Input Current

I

IH

20 µA

Logic-Low Input Current I

IL

2µA

TEMP OUTPUT

TEMP Output Voltage V

TEMP

mV

TEMP Temperature
Coefficient

TC

TEMP

1.9

mV/°C

SYMBOL

No load, TA = +25°C

570

MIN TYP MAX

3.2980

3.2967

3.3020

3.3033

TCV

OUTTA

= -40°C to +125°C

500
900

120

MAX6143

High-Precision Voltage Reference with
Temperature Sensor

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX6143_41 (V

OUT

= 4.096V)

(VIN= V

SHDN

= +10V, TA= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

OUTPUT

MAX6143A_41 (0.06%)

Output Voltage V

OUT

MAX6143B_41 (0.1%)

V

Output Adjustment Range

R

POT

= 10kΩ ±3 ±6%

MAX6143AASA 1.5 3

Output-Voltage Temperature
Coefficient (Note 2)

MAX6143BASA 3 10

ppm/°C

TA = +25°C 0.6 5

Line Regulation (Note 3)

∆V

OUT

/

∆V

IN

6.1V ≤ VIN ≤ 40V
T

A

= -40°C to +125°C 0.8 10

ppm/V

TA = +25°C210

Sourcing:
0 ≤ I

OUT

≤ 10mA

T

A

= -40°C to +125°C215

TA = +25°C50500

Load Regulation (Note 3)

∆V

OUT

/

∆I

OUT

Sinking:

-0.6mA ≤ I

OUT

≤ 0

T

A

= -40°C to +125°C90900

ppm/mA

OUT shorted to GND 60

Output Short-Circuit Current

I

SC

OUT shorted to IN 3

mA

Temperature Hysteresis
(Note 4)

∆V

OUT

/

cycle

ppm

Long-Term Stability

∆V

OUT

/

time

1000 hours at T

A

= +25°C50ppm

ELECTRICAL CHARACTERISTICS—MAX6143_33 (V

OUT

= 3.3V) (continued)

(VIN= V

SHDN

= +10V, TA= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT

Supply Voltage Range V

IN

Guaranteed by line regulation test 5.3

V

TA = +25°C 320

Quiescent Supply Current I

IN

No load, normal
operation

T

A

= -40°C to +125°C

µA

Shutdown Supply Current I

SHDN

No load, V

SHDN

<

0.8V

T

A

= -40°C to +125°C

5µA

SHUTDOWN (SHDN)

Logic-High Input Voltage V

IH

2.0 V

Logic-Low Input Voltage V

IL

0.8 V

Logic-High Input Current I

IH

20 µA

Logic-Low Input Current I

IL

2µA

TEMP OUTPUT

TEMP Output Voltage V

TEMP

630 mV

TEMP Temperature
Coefficient

2.1

mV/°C

TC

TEMP

SYMBOL

40.0
500
650

0.01

MIN TYP MAX

No load, TA = +25°C

∆V

TRIM

TCV

TA = -40°C to +125°C

OUT

4.0935 4.096 4.0985

4.0919 4.096 4.1001

120

MAX6143

High-Precision Voltage Reference with

Temperature Sensor

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS—MAX6143_50 (V

OUT

= 5.0V)

(VIN= V

SHDN

= +15V, TA= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

OUTPUT

MAX6143A_50 (0.06%)

5.0

Output Voltage V

OUT

MAX6143B_50 (0.1%)

5.0

V

Output Adjustment Range ∆V

TRIM

R

POT

= 10kΩ ±3 ±6%

MAX6143AASA 1.5 3Output-Voltage
Temperature Coefficient
(Note 2)

MAX6143BASA 3 10

ppm/°C

TA = +25°C 0.6 5

Line Regulation (Note 3)

∆V

OUT

/

∆V

IN

7V ≤ VIN ≤ 40V

T

A

= -40°C to +125°C 0.8 10

ppm/V

TA = +25°C210

Sourcing:
0 ≤ I

OUT

≤ 10mA

T

A

= -40°C to +125°C215

TA = +25°C50

Load Regulation (Note 3)

∆V

OUT

/

∆I

OUT

Sinking:

-0.6mA ≤ I

OUT

≤ 0

T

A

= -40°C to +125°C90

ppm/mA

ELECTRICAL CHARACTERISTICS—MAX6143_41 (V

OUT

= 4.096V) (continued)

(VIN= V

SHDN

= +10V, TA= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER

CONDITIONS

UNITS

DYNAMIC

f = 0.1Hz to 10Hz 7

µV

P-P

Noise Voltage e

OUT

f = 10Hz to 1kHz

µV

RMS

Turn-On Settling Time t

R

To V

OUT

= 0.1% of final value, C

OUT

= 50pF

µs

INPUT

Supply Voltage Range V

IN

Guaranteed by line regulation test 6.1

V

TA = +25°C

500

Quiescent Supply Current I

IN

No load, normal
operation

T

A

= -40°C to +125°C 650

µA

Shutdown Supply Current I

SHDN

No load, V

SHDN

<

0.8V

T

A

=-40°C to +125°C

5µA

SHUTDOWN (SHDN)

Logic-High Input Voltage V

IH

2.0 V

Logic-Low Input Voltage V

IL

0.8 V

Logic-High Input Current I

IH

20 µA

Logic-Low Input Current I

IL

2µA

TEMP OUTPUT

TEMP Output Voltage V

TEMP

mV

TEMP Temperature
Coefficient

(0.06%) 2.1

mV/°C

SYMBOL

TC

TEMP

MIN TYP MAX

11.5
200

40.0

320

0.01

630

No load, TA = +25°C

TCV

OUTTA

= -40°C to +125°C

4.9970

4.9950

5.0030

5.0050

500
900