MAX6225 Maxim Integrated Products, MAX6225 Datasheet

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MAX6225

Manufacturer Part Number
MAX6225
Description
Manufacturer
Maxim Integrated Products
Datasheet

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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.
19-1139; Rev 4; 1/01
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.
*OPTIONAL
2.2µF
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
NR
Low-Noise, Precision, +2.5V/+4.096V/+5V
________________________________________________________________ Maxim Integrated Products
8V TO 36V INPUT
MAX6225
MAX6241
MAX6250
GND
General Description
IN
TRIM
OUT
Applications
2.2µF
REFERENCE OUT
*
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/1000hr Long-Term Stability
o Stable for All Capacitive Loads
Ordering Information continued at end of data sheet.
MAX6225ACPA
MAX6225BCPA
MAX6225ACSA
MAX6225BCSA
MAX6225AEPA
MAX6225BEPA
MAX6225AESA
MAX6225BESA
MAX6225AMJA
MAX6225BMJA
I.C. = INTERNALLY CONNECTED; DO NOT USE
TOP VIEW
PART
Voltage References
GND
I.C.
NR
IN
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
-55°C to +125°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
1
2
3
4
Ordering Information
MAX6225
MAX6241
MAX6250
DIP/SO
Pin Configuration
8 Plastic DIP
8 Plastic DIP
8 SO
8 SO
8 Plastic DIP
8 Plastic DIP
8 SO
8 SO
8 CERDIP
8 CERDIP
PIN-
PACKAGE
8
7
6
5
I.C.
I.C.
OUT
TRIM
Features
TEMPCO
(ppm/
MAX
2.0
5.0
2.0
5.0
3.0
7.0
3.0
7.0
5.0
8.0
°
C)
1

Related parts for MAX6225

MAX6225 Summary of contents

Page 1

... 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. ...

Page 2

... Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS—MAX6225 (V = +10V, I ...

Page 3

... Low-Noise, Precision, +2.5V/+4.096V/+5V ELECTRICAL CHARACTERISTICS—MAX6225 (continued +10V 0mA OUT A MIN PARAMETER SYMBOL ∆V OUT Load Regulation (Note 2) ∆I OUT Supply Current I IN ∆V Trim-Adjustment Range OUT Turn-On Settling Time t ON Output Noise Voltage (Note 3) e Temperature Hysteresis ∆V Long-Term Stability ...

Page 4

Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References ELECTRICAL CHARACTERISTICS—MAX6241 (V = +10V 0mA OUT A MIN PARAMETER SYMBOL Input Voltage Range V IN Output Voltage V OUT Output Voltage Temperature TCV OUT Coefficient (Note ...

Page 5

Low-Noise, Precision, +2.5V/+4.096V/+5V ELECTRICAL CHARACTERISTICS—MAX6250 (V = +10V 0mA OUT A MIN PARAMETER SYMBOL Input Voltage Range V Output Voltage V OUT Output Voltage Temperature TCV Coefficient (Note 1) ∆V OUT Line ...

Page 6

... MAX6250 2.4 MAX6241 MAX6225 2.2 2.0 1.8 1.6 1.4 1.2 1 SUPPLY VOLTAGE (V) MAX6225 NORMALIZED OUTPUT VOLTAGE vs. TEMPERATURE MAX6225 toc03 0.7 280 0.6 240 0.5 200 0.4 160 0.3 120 0 -0.1 -40 -0.2 -80 -0.3 -120 -0.4 -160 -55 -35 ...

Page 7

... MAX6225 110 100 MAX6241 90 MAX6250 100 1k 10k FREQUENCY (Hz) MAX6250 OUTPUT NOISE-VOLTAGE DENSITY vs. FREQUENCY 100 0µ 1µ 100 1k 10k FREQUENCY (Hz) MAX6250 0.1Hz to 10Hz NOISE MAX6225 toc15 0µF OUT NR 1sec/div RIPPLE REJECTION vs. FREQUENCY (C = 0µ MAX6225 MAX6241 90 85 MAX6250 100 1k 10k FREQUENCY (Hz) 7 ...

Page 8

... TURN-ON AND TURN-OFF TRANSIENT RESPONSE MAX6225 toc21 -10mA A +10mA OUT 10V/div 1V/div OUT TURN-ON AND TURN-OFF TRANSIENT RESPONSE MAX6225 toc23 +10V OUT 10V/div 1V/div OUT MAX6225 toc20 10mA 0mA 2µs/div MAX6225 MAX6225 toc22 +10V 0 = 0µF NR 1µs/div MAX6250 MAX6225 toc24 +10V 0µF NR 1µs/div ...

Page 9

... Noise in the power-supply input can affect output noise, but can be reduced by adding an optional bypass capacitor to the IN pin and GND. The MAX6225/MAX6241/MAX6250 are stable with capacitive load values from 0µF to 100µF, for all values of load current. Adding an output bypass capacitor can help reduce noise and output glitching caused by load transients ...

Page 10

Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References +5V INPUT C1+ 3.3µF C1- MAX865 C1 C2+ 3.3µF 2.2µF C2- GND V- C2 1µF 2.2µF Figure 3. +5V and -5V References from a Single +5V Supply Ordering Information (continued) PIN- PART ...

Page 11

Low-Noise, Precision, +2.5V/+4.096V/+5V ________________________________________________________Package Information ______________________________________________________________________________________ Voltage References 11 ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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