
AVAILABLE
Functional Diagrams
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
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 2.5V 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.
________________________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, 1.5Vp-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
1ppm/°C, Low-Noise, +2.5V/+4.096V/+5V
Voltage References
REFERENCE OUT
GND
NR
*OPTIONAL
TRIM
OUT
IN
8V TO 36V INPUT
*
2.2
F
*
2.2
F
MAX6325
MAX6341
MAX6350
Typical Operating Circuit
OUT
NR
TRIM
GND
1
2
8
7
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 1; 1/01
Ordering Information
Ordering Information continued at end of data sheet.
MAX6325CPA
MAX6325CSA
0°C to +70°C
1.0
8 Plastic DIP
8 SO
MAX6325EPA
-40°C to +85°C
1.5
8 Plastic DIP
PART
TEMP. RANGE
MAX
TEMPCO
(ppm/
°C)
PIN-
PACKAGE
MAX6325ESA
-40°C to +85°C
1.5
8 SO
MAX6325MJA
-55°C to +125°C
2.5
8 CERDIP
Pin Configuration
19-1203; Rev 1; 1/01
Pin Configuration
MAX6325/MAX6341/MAX6350