Name: MAX6126AASA21
SKU: MAX6126AASA21
Price: 11.76537 USD
Availability: InStock

General Description

The MAX6126 is an ultra-low-noise, high-precision, low-

dropout voltage reference. This family of voltage refer-

ences feature curvature-correction circuitry and

high-stability, laser-trimmed, thin-film resistors that

result in 3ppm/°C (max) temperature coefficients and

an excellent ±0.02% (max) initial accuracy. The propri-

etary low-noise reference architecture produces a low

flicker noise of 1.3µV

P-P

and wideband noise as low as

60nV/√Hz (2.048V output) without the increased supply

current usually found in low-noise references. Improve

wideband noise to 35nV/√Hz and AC power-supply

rejection by adding a 0.1µF capacitor at the noise

reduction pin. The MAX6126 series mode reference

operates from a wide 2.7V to 12.6V supply voltage

range and load-regulation specifications are guaran-

teed to be less than 0.025Ω for sink and source cur-

rents up to 10mA. These devices are available over the

automotive temperature range of -40°C to +125°C.

The MAX6126 typically draws 380µA of supply current

and is available in 2.048V, 2.500V, 3.000V, 4.096V, and

5.000V output voltages. These devices also feature

dropout voltages as low as 200mV. Unlike conventional

shunt-mode (two-terminal) references that waste supply

current and require an external resistor, the MAX6126

offers supply current that is virtually independent of

supply voltage and does not require an external resis-

tor. The MAX6126 is stable with 0.1µF to 10µF of load

capacitance.

The MAX6126 is available in the tiny 8-pin µMAX, as

well as 8-pin SO packages.

Applications

High-Resolution A/D and D/A Converters

ATE Equipment

High-Accuracy Reference Standard

Precision Current Sources

Digital Voltmeters

High-Accuracy Industrial and Process Control

Features

♦ Ultra-Low 1.3µV

P-P

Noise (0.1Hz to 10Hz, 2.048V

Output)

♦ Ultra-Low 3ppm/°C (max) Temperature Coefficient

♦ ±0.02% (max) Initial Accuracy

♦ Wide (V

OUT

+ 200mV) to 12.6V Supply Voltage

Range

♦ Low 200mV (max) Dropout Voltage

♦ 380µA Quiescent Supply Current

♦ 10mA Sink/Source-Current Capability

♦ Stable with C

LOAD

= 0.1µF to 10µF

♦ Low 20ppm/1000hr Long-Term Stability

♦ 0.025Ω (max) Load Regulation

♦ 20µV/V (max) Line Regulation

♦ Force and Sense Outputs for Remote Sensing

MAX6126

Ultra-High-Precision, Ultra-Low-Noise,

Series Voltage Reference

________________________________________________________________ Maxim Integrated Products 1

OUTS

I.C.*GNDS

I.C.*

OUTFIN

GND

SO/µMAX

TOP VIEW

MAX6126

*I.C. = INTERNALLY CONNECTED. DO NOT USE.

Pin Configuration

Ordering Information

19-2647; Rev 2; 6/03

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.

PART TEMP RANGE

PIN-

PACKAGE

OUTPUT

VOLTAGE

(V)

MAXIMUM INITIAL

ACCURACY (%)

MAXIMUM TEMPCO

(-40°C to +85°C)

(ppm/°C)

TOP

MARK

MAX6126AASA21 -40°C to +125°C 8 SO 2.048 0.02 3

—

MAX6126BASA21 -40°C to +125°C 8 SO 2.048 0.06 5

—

MAX6126AAUA21 -40°C to +125°C 8 µMAX 2.048 0.06 3

6126A21

Ordering Information continued at end of data sheet.

MAX6126

Ultra-High-Precision, Ultra-Low-Noise,

Series Voltage Reference

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.

(All voltages referenced to GND)

GNDS ....................................................................-0.3V to +0.3V

IN ........................................................................... -0.3V to +13V

OUTF, OUTS, NR........ -0.3V to the lesser of (V

+ 0.3V) or +6V

Output Short Circuit to GND or IN ..........................................60s

Continuous Power Dissipation (T

= +70°C)

8-Pin µMAX (derate 4.5mW/°C above +70°C) ............362mW

8-Pin SO (derate 5.88mW/°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—MAX6126_21 (V

OUT

= 2.048V)

= 5V, C

LOAD

= 0.1µF, I

OUT

= 0, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

OUTPUT

Output Voltage V

OUT

= +25°C 2.048 V

A grade SO -0.02 +0.02

B grade SO -0.06 +0.06

A grade µMAX -0.06 +0.06

Output Voltage Accuracy

Referred to

OUT

= +25°C

B grade µMAX -0.1 +0.1

A grade SO 0.5 3

B grade SO 1 5

A grade µMAX 1 3

= -40°C

to +85° C

B grade µMAX 2 7

A grade SO 1 5

B grade SO 2 10

A grade µMAX 2 5

Output Voltage Temperature

Coefficient (Note 1)

TCV

OUT

= -40°C

to +125°C

B grade µMAX 3 12

ppm/°C

= +25°C220

Line Regulation

∆V

OUT

∆V

2.7V ≤ V

≤

12.6V

= -40°C to +125°C40

µV/V

Sourcing: 0 ≤ I

OUT

≤ 10mA 0.7 25

Load Regulation

∆V

OUT

∆I

OUT Sinking: -10mA ≤ I

OUT

≤ 0 1.3 25

µV/mA

Short to GND 160

OUT Short-Circuit Current I

Short to IN 20

SO 25

Thermal Hysteresis (Note 2)

∆V

OUT

cycle

µMAX 80

ppm

SO 20

Long-Term Stability

∆V

OUT

time

1000hr at T

= +25°C

µMAX 100

ppm/

1000hr

MAX6126

Ultra-High-Precision, Ultra-Low-Noise,

Series Voltage Reference

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX6126_21 (V

OUT

= 2.048V) (continued)

= 5V, C

LOAD

= 0.1µF, I

OUT

= 0, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DYNAMIC CHARACTERISTICS

f = 0.1Hz to 10Hz 1.3 µV

P-P

f = 1kHz, C

= 0 60

Noise Voltage e

OUT

f = 1kHz, C

= 0.1µF 35

nV/√Hz

= 0 0.8

Turn-On Settling Time t

To V

OUT

= 0.01% of

final value

= 0.1µF 20

Capacitive-Load Stability Range C

LOAD

No sustained oscillations 0.1 to 10 µF

INPUT

Supply Voltage Range V

Guaranteed by line-regulation test 2.7 12.6 V

= +25°C 380 550

Quiescent Supply Current I

= -40°C to +125°C 725

µA

ELECTRICAL CHARACTERISTICS—MAX6126_25 (V

OUT

= 2.500V)

= 5V, C

LOAD

= 0.1µF, I

OUT

= 0, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

OUTPUT

Output Voltage V

OUT

= +25°C 2.500 V

A grade SO -0.02 +0.02

B grade SO -0.06 +0.06

A grade µMAX -0.06 +0.06

Output Voltage Accuracy

Referred to V

OUT

= +25°C

B grade µMAX -0.1 +0.1

A grade SO 0.5 3

B grade SO 1 5

A grade µMAX 1 3

= -40°C to +85°C

B grade µMAX 2 7

A grade SO 1 5

B grade SO 2 10

A grade µMAX 2 5

Output Voltage Temperature

Coefficient (Note 1)

TCV

OUT

= -40°C to

+125°C

B grade µMAX 3 12

ppm/°C

= +25°C320

Line Regulation

∆V

OUT

∆V

2.7V ≤ V

≤ 12.6V

= -40°C to +125°C40

µV/V

Sourcing: 0 ≤ I

OUT

≤ 10mA 1 25

Load Regulation

∆V

OUT

∆I

OUT Sinking: -10mA ≤ I

OUT

≤ 0 1.8 25

µV/mA

Part #	MAX6126AASA21
Description	ULTRA-HIGH-PRECISION, ULTRA-LOW-NOISE, SERIES - Rail/Tube
Category	IC
Availability	In Stock
Qty	1

MAX6126AASA21

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