MAX6225 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References

19-1139; Rev 3; 5/98
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
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
Typical Operating Circuit
8V TO 36V INPUT
____________________________Features
o Low 1.0ppm/°C Temperature Coefficient
o Very Low 1.5µVp-p Noise (0.1Hz to 10Hz)
o ±0.02% Initial Accuracy
o ±15mA Output Source and Sink Current
o Low, 18mW Power Consumption (MAX6225)
o Industry-Standard Pinout
o Optional Noise Reduction and Voltage Trim
o Excellent Transient Response
o 8-Pin SO Package Available
o Low 20ppm/1000h Long-Term Stability
o Stable for All Capacitive Loads
Ordering Information
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
3.0
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
Ordering Information continued at end of data sheet.
Pin Configuration
TOP VIEW
2.2µF ^*
IN
OUT
MAX6225
MAX6241
NR MAX6250 TRIM
GND
*OPTIONAL
REFERENCE OUT
2.2µF ^*
I.C. 1
IN 2
NR 3
GND 4
MAX6225
MAX6241
MAX6250
8 I.C.
7 I.C.
6 OUT
5 TRIM
DIP/SO
I.C. = INTERNALLY CONNECTED; DO NOT USE
________________________________________________________________ Maxim Integrated Products 1
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