_______________General Description

The MAX6325/MAX6341/MAX6350 are low-noise, preci-

sion voltage references with extremely low, 0.5ppm/°C

typical temperature coefficients and excellent, ±0.02%

initial accuracy. These devices feature buried-zener

technology for lowest noise performance. Load-regula-

tion specifications are guaranteed for source and sink

currents up to 15mA. Excellent line and load regulation

and low output impedance at high frequencies make

them ideal for high-resolution data-conversion systems

up to 16 bits.

The MAX6325 is set for a 2.500V output, the MAX6341

is set for a 4.096V output, and the MAX6350 is set for a

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 Ultra-Low, 1ppm/°C Max Tempco

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

(MAX6325)

o ±0.02% Initial Accuracy (MAX6350)

o ±15mA Output Source and Sink Current

o Low, 18mW Power Consumption (MAX6325)

o Industry-Standard Pinout

o Optional Noise Reduction and Voltage Trim

o Excellent Transient Response

o 8-Pin SO Package Available

o Low, 30ppm/1000h Long-Term Stability

o Stable for All Capacitive Loads

1ppm/°C, Low-Noise, +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

MAX6325

MAX6341

MAX6350

__________Typical Operating Circuit

OUT

NR

TRIM

GND

1

2

8

7

I.C.

I.C.

IN

I.C.

MAX6325

MAX6341

MAX6350

DIP/SO

TOP VIEW

I.C. = INTERNALLY CONNECTED; DO NOT USE

3

4

6

5

__________________Pin Configuration

19-1203; Rev 0; 4/97

______________Ordering Information

Ordering Information continued at end of data sheet.

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

MAX6325CPA

MAX6325CSA

0°C to +70°C

0°C to +70°C

1.0

1.0

8 Plastic DIP

8 SO

MAX6325EPA

-40°C to +85°C

1.5

8 Plastic DIP

PART

TEMP. RANGE

MAX

TEMPCO

(ppm/

PIN-

PACKAGE

MAX6325ESA

-40°C to +85°C

1.5

8 SO

MAX6325MJA

-55°C to +125°C

2.5

8 CERDIP