MAX6325/MAX6341/MAX6350
1ppm/°C, Low-Noise, +2.5V/+4.096V/+5V
Voltage References
General Description
The MAX6325/MAX6341/MAX6350 are low-noise, precision 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-regulation 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 2.5V output, the MAX6341 is
set for a 4.096V output, and the MAX6350 is set for a
5V output. All three provide for the option of external
trimming and noise reduction.
____________________________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/1000hr Long-Term Stability
o Stable for All Capacitive Loads
19-1203; Rev 1; 1/01
Ordering Information
________________________Applications
High-Resolution Analog-to-Digital
and Digital-to-Analog Converters
PART
TEMP. RANGE
PINPACKAGE
MAX
TEMPCO
(ppm/°C)
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 CERDIP
1.0
1.0
1.5
1.5
2.5
High-Accuracy Reference Standard
High-Accuracy Industrial and Process Control
Digital Voltmeters
ATE Equipment
Precision Current Sources
Functional
Diagrams
MAX6325CPA
MAX6325CSA
MAX6325EPA
MAX6325ESA
MAX6325MJA
Ordering Information continued at end of data sheet.
Pin Configuration
Pin Configuration
Typical Operating Circuit
TOP VIEW
8V TO 36V INPUT
IN
OUT
2.2µF *
NR
MAX6325
MAX6341
MAX6350
REFERENCE OUT
I.C. 1
IN 2
NR 3
TRIM
2.2µF *
8
GND 4
7
I.C.
6
OUT
5
MAX6325
MAX6341
MAX6350
I.C.
TRIM
GND
DIP/SO
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
*OPTIONAL
UCSP is a trademark of Maxim Integrated Products, Inc.
I.C. = INTERNALLY CONNECTED; DO NOT USE
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-1203; Rev 1; 1/01
