General Description

The MAX6225/MAX6241/MAX6250 are low-noise, preci-

sion voltage references with extremely low 1ppm/°C

temperature coefficients and excellent ±0.02% initial

accuracy. These devices feature buried-zener technolo-

gy for lowest noise performance. Load-regulation speci-

fications are guaranteed for source and sink currents

up to 15mA. Excellent line and load regulation and low

output impedance at high frequency make them ideal

for high-resolution data-conversion systems up to

16 bits.

The MAX6225 is set for 2.500V output, the MAX6241 is

set for 4.096V output, and the MAX6250 is set for

5.000V output. All three provide for the option of exter-

nal trimming and noise reduction.

Applications

High-Resolution Analog-to-Digital

and Digital-to-Analog Converters

High-Accuracy Reference Standard

High-Accuracy Industrial and Process Control

Digital Voltmeters

ATE Equipment

Precision Current Sources

____________________________Features

o Low 1.0ppm/°C Temperature Coefficient

o Very Low 1.5µVp-p Noise (0.1Hz to 10Hz)

o ±0.02% Initial Accuracy

o ±15mA Output Source and Sink Current

o Low, 18mW Power Consumption (MAX6225)

o Industry-Standard Pinout

o Optional Noise Reduction and Voltage Trim

o Excellent Transient Response

o 8-Pin SO Package Available

o Low 20ppm/1000h Long-Term Stability

o Stable for All Capacitive Loads

Low-Noise, Precision, +2.5V/+4.096V/+5V

Voltage References

________________________________________________________________

Maxim Integrated Products

1

REFERENCE OUT

GND

NR

*OPTIONAL

TRIM

OUT

IN

8V TO 36V INPUT

*

2.2

µF

*

2.2

µF

MAX6225

MAX6241

MAX6250

Typical Operating Circuit

OUT

NR

TRIM

GND

1

2

8

7

I.C.

I.C.

IN

I.C.

MAX6225

MAX6241

MAX6250

DIP/SO

TOP VIEW

I.C. = INTERNALLY CONNECTED; DO NOT USE

3

4

6

5

Pin Configuration

19-1139; Rev 3; 5/98

Ordering Information

Ordering Information continued at end of data sheet.

MAX6225BCSA

MAX6225ACPA

MAX6225BCPA

MAX6225ACSA

0°C to +70°C

0°C to +70°C

0°C to +70°C

0°C to +70°C

5.0

2.0

5.0

2.0

8 SO

8 Plastic DIP

8 Plastic DIP

8 SO

MAX6225AEPA

-40°C to +85°C

3.0

8 Plastic DIP

PART

TEMP. RANGE

MAX

TEMPCO

(ppm/

PIN-

PACKAGE

MAX6225BEPA

-40°C to +85°C

7.0

8 Plastic DIP

MAX6225AESA

-40°C to +85°C

3.0

8 SO

MAX6225BESA

-40°C to +85°C

7.0

8 SO

MAX6225AMJA

-55°C to +125°C

5.0

8 CERDIP

MAX6225BMJA

-55°C to +125°C

8.0

8 CERDIP

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 408-737-7600 ext. 3468.