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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
♦ Low 1.0ppm/°C Temperature Coefficient
♦ Very Low 1.5µVp-p Noise (0.1Hz to 10Hz)
♦ ±0.02% Initial Accuracy
♦ ±15mA Output Source and Sink Current
♦ Low, 18mW Power Consumption (MAX6225)
♦ Industry-Standard Pinout
♦ Optional Noise Reduction and Voltage Trim
♦ Excellent Transient Response
♦ 8-Pin SO Package Available
♦ Low 20ppm/1000hr Long-Term Stability
♦ Stable for All Capacitive Loads
MAX6225/MAX6241/MAX6250
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
*
2.2µF
*
2.2µF
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 4; 1/01
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 3.08 Plastic DIP
PART TEMP. RANGE
MAX
TEMPCO
(ppm/
°C)
PIN-
PACKAGE
MAX6225BEPA -40°C to +85°C 7.08 Plastic DIP
MAX6225AESA -40°C to +85°C 3.08 SO
MAX6225BESA -40°C to +85°C 7.08 SO
MAX6225AMJA -55°C to +125°C 5.08 CERDIP
MAX6225BMJA -55°C to +125°C 8.08 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.
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