Datasheet
General Description
The MAX6225/MAX6241/MAX6250 are low-noise, pre-
cision voltage references with extremely low 1ppm/°C
temperature coefficients and excellent ±0.02% initial
accuracy. These devices feature buried-zener technology
for lowest noise performance. Load-regulation specifica-
tions 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 devices 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
● Low 1.0ppm/°C Temperature Coefficient
● Very Low 1.5μV
P-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/1000h Long-Term Stability
● Stable for All Capacitive Loads
Ordering Information appears at end of data sheet.
19-1139; Rev 5; 3/14
+Denotes a lead(Pb)-free/RoHS-compliant package.
PART TEMP RANGE
PIN-
PACKAGE
MAX
TEMPCO
(ppm/°C)
MAX6225ACPA+ 0°C to +70°C 8 Plastic DIP 2.0
MAX6225BCPA+ 0°C to +70°C 8 Plastic DIP 5.0
MAX6225ACSA+ 0°C to +70°C 8 SO 2.0
MAX6225BCSA+ 0°C to +70°C 8 SO 5.0
MAX6225AEPA+ -40°C to +85°C 8 Plastic DIP 3.0
MAX6225BEPA+ -40°C to +85°C 8 Plastic DIP 7.0
MAX6225AESA+ -40°C to +85°C 8 SO 5.0
MAX6225BESA+ -40°C to +85°C 8 SO 7.0
MAX6225AMJA -55°C to +125°C 8 CERDIP 5.0
MAX6225BMJA -55°C to +125°C 8 CERDIP 8.0
IN
8V TO 36V INPUT
REFERENCE OUT
*OPTIONAL
OUT
TRIM
2.2µF*
2.2µF*
NR
GND
MAX6225
MAX6241
MAX6250
DIP/SO
+
TOP VIEW
I.C. = INTERNALLY CONNECTED; DO NOT USE
MAX6225
MAX6241
MAX6250
OUT
TRIMGND
1
2
8
7
I.C.
I.C.IN
NR
I.C.
3
4
6
5
MAX6225/MAX6241/MAX6250 Low-Noise, Precision,
+2.5V/+4.096V/+5V Voltage References
Typical Operating Circuit
Pin Conguration
Ordering Information