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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
♦ Ultra Low, 1ppm/°C Max Tempco
♦ Very Low, 1.5µVp-p Noise (0.1Hz to 10Hz)
(MAX6325)
♦ ±0.02% Initial Accuracy (MAX6350)
♦ ±15mA Output Source and Sink Current
♦ Low, 18mW Power Consumption (MAX6325)
♦ Industry-Standard Pinout
♦ Optional Noise Reduction and Voltage Trim
♦ Excellent Transient Response
♦ 8-Pin SO Package Available
♦ Low, 30ppm/1000hr Long-Term Stability
♦ Stable for All Capacitive Loads
MAX6325/MAX6341/MAX6350
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
*
2.2µF
*
2.2µF
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 1; 1/01
Ordering Information
Ordering Information continued at end of data sheet.
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 1.58 Plastic DIP
PART TEMP. RANGE
MAX
TEMPCO
(ppm/
°C)
PIN-
PACKAGE
MAX6325ESA -40°C to +85°C 1.58 SO
MAX6325MJA -55°C to +125°C 2.58 CERDIP
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.
