General Description
The MAX6225/MAX6241/MAX6250 are low-noise, precision 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 specifications 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 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 1.5µVp-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
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)
PINPACKAGE
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.
8V TO 36V INPUT
MAX6225
*
2.2µF
*OPTIONAL
MAX6241
NR
MAX6250
IN
GND
OUT
TRIM
REFERENCE OUT
*
2.2µF
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX6225
(VIN= +10V, I
OUT
= 0mA, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
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.
(Voltages Referenced to GND)
IN..............................................................................-0.3V to +40V
OUT, TRIM ...............................................................-0.3V to +12V
NR ..............................................................................-0.3V to +6V
OUT Short-Circuit to GND Duration (V
IN
≤ 12V)..........Continuous
OUT Short-Circuit to GND Duration (V
IN
≤ 40V) ........................5s
OUT Short-Circuit to IN Duration (V
IN
≤ 12V) ..............Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ......727mW
8-Pin SO (derate 5.88mW/°C above +70°C)...................471mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C)...........640mW
Operating Temperature Ranges
MAX62_ _ _C_ A.....................................................0°C to +70°C
MAX62_ _ _E_ A ..................................................-40°C to +85°C
MAX62_ _ _MJA ................................................-55°C to +125°C
Storage Temperature Range ..............................-65°C to +150°C
Lead Temperature (soldering, 10s)...................................+300°C
V
836V
IN
Input Voltage Range
UNITSMIN TYP MAXSYMBOLPARAMETER
C, E, M
T
A
V
2.499 2.500 2.501
V
OUT
Output Voltage
C 1.0 2.0
Output Voltage Temperature
Coefficient (Note 1)
TCV
OUT
E 1.5 3.0
ppm/°C
Line Regulation (Note 2)
∆V
OUT
/
∆V
IN
+25°C 10 18
ppm/V
MAX6225A
MAX6225AC_A
MAX6225AE_A
CONDITIONS
8V ≤ VIN≤ 10V
2.497 2.500 2.503MAX6225B
M 2.0 5.0
C 2.5 5.0
MAX6225AMJA
MAX6225BC_A
E 2.5 7.0
M 2.5 8.0
MAX6225BE_A
MAX6225BMJA
C 30
E 35
M 45
10V ≤ VIN≤ 36V
+25°C 25
C 7
E 8
M 10
+25°C
+25°C
Sinking: -15mA ≤ I
OUT
≤ 0mA
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—MAX6225 (continued)
(VIN= +10V, I
OUT
= 0mA, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
(Note 4) 20 ppmTemperature Hysteresis +25°C
CONDITIONS
C 16
E
Long-Term Stability ∆V
OUT
/ t
17
+25°C 20
M 315
ppm/
1000hr
C 16
Figure 1
0.1Hz ≤ f ≤ 10Hz
E
10Hz ≤ f ≤ 1kHz
17
M 10 30
+25°C 1.8 2.7
Supply Current I
IN
C, E, M 3.0
mA
Trim-Adjustment Range
UNITSMIN TYP MAXSYMBOLPARAMETER
∆V
OUT
C, E, M ±15 ±25 mV
1.5 µV
p-p
Output Noise Voltage (Note 3) e
n
+25°C 1.3 2.8 µV
RMS
T
A
To ±0.01% of final valueTurn-On Settling Time t
ON
+25°C 5 µs
+25°C
Sourcing: 0mA ≤ I
OUT
≤ 15mA
ppm/mA
∆V
OUT
/
∆I
OUT
Load Regulation (Note 2)
Sinking: -15mA ≤ I
OUT
≤ 0mA
ppm/mA
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
4 _______________________________________________________________________________________
(Note 4)
V
4.095 4.096 4.097
V
OUT
Output Voltage
+25°C
20 ppmTemperature Hysteresis
C 1.0 2.0
MAX6241A
Output Voltage Temperature
Coefficient (Note 1)
TCV
OUT
E 1.5 3.0
ppm/°C
+25°C
+25°C 10 18
MAX6241AC_A
MAX6241AE_A
CONDITIONS
20
ppm/
1000hr
8V ≤ VIN≤ 10V
Long-Term Stability ∆V
OUT
/ t +25°C
Line Regulation (Note 2)
∆V
OUT
/
∆V
IN
ppm/V
Figure 1
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
V836V
IN
Input Voltage Range
+25°C 1.9 2.9
I
IN
C, E, M 3.2
mA
Trim-Adjustment Range
UNITSMIN TYP MAXSYMBOLPARAMETER
∆V
OUT
C, E, M ±24 ±40 mV
2.4 µVp-p
Output Noise Voltage (Note 3) e
n
+25°C
2.0 4.0 µV
RMS
C, E, M
T
A
ELECTRICAL CHARACTERISTICS—MAX6241
(VIN= +10V, I
OUT
= 0mA, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
M 2.0 5.0
C 2.5 5.0
MAX6241AMJA
MAX6241BC_A
E 2.5 7.0
M 2.5 8.0
MAX6241BE_A
MAX6241BMJA
4.092 4.096 4.100MAX6241B
To ±0.01% of final valueTurn-On Settling Time t
ON
+25°C 8 µs
C 30
E 35
M 45
+25°C 25
10V ≤ VIN≤ 36V
C 7
E 8
M 10
Supply Current
C 16
E 17
M 39
C 16
E 17
M 718
+25°C
+25°C
Sourcing: 0mA ≤ I
OUT
≤ 15mA
Sinking: -15mA ≤ I
OUT
≤ 0mA
∆V
OUT
/
∆I
OUT
Load Regulation (Note 2) ppm/mA
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS—MAX6250
(VIN= +10V, I
OUT
= 0mA, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
(Note 4)
V
4.999 5.000 5.001
V
OUT
Output Voltage
+25°C
20 ppmTemperature Hysteresis
C 1.0 2.0
MAX6250A
E 1.5 3.0
+25°C
+25°C 10 18
MAX6250AC_A
MAX6250AE_A
CONDITIONS
20
ppm/
1000hr
8V ≤ VIN≤ 10V
Long-Term Stability ∆V
OUT
/ t +25°C
Line Regulation (Note 2)
∆V
OUT
/
∆V
IN
ppm/V
Figure 1
To ±0.01% of final value
V836V
IN
Input Voltage Range
+25°C 2.0 3.0
Supply Current I
IN
C, E, M 3.3
mA
Trim-Adjustment Range
UNITSMIN TYP MAXSYMBOLPARAMETER
∆V
OUT
C, E, M ±30 ±50 mV
10 µsTurn-On Settling Time t
on
+25°C
C, E, M
T
A
C 30
E 35
M 45
C 7
+25°C 25
E 8
10V ≤ VIN≤ 36V
M 10
C 16
C 16
E 17
E 17
M
M 29
615
0.1Hz ≤ f ≤ 10Hz
10Hz ≤ f ≤ 1kHz
3.0 µVp-p
Output Noise Voltage (Note 3) e
n
+25°C
2.5 5.0 µV
RMS
4.995 5.000 5.005MAX6250B
Output Voltage Temperature
Coefficient (Note 1)
TCV
OUT
ppm/°C
M 2.0 5.0MAX6250AMJA
C 2.5 5.0MAX6250BC_A
E 2.5 7.0MAX6250BE_A
M 2.5 8.0MAX6250BMJA
Note 1: Temperature coefficient is measured by the box method; i.e., the maximum ∆V
OUT
is divided by ∆T x V
OUT
.
Note 2: Line regulation (∆V
OUT
/ (V
OUT
x ∆VIN)) and load regulation (∆V
OUT
/ (V
OUT
x ∆I
OUT
)) are measured with pulses and do
not include output voltage changes due to die-temperature changes.
Note 3: Noise specifications are guaranteed by design.
Note 4: Temperature hysteresis is specified at T
A
= +25°C by measuring V
OUT
before and after changing temperature by +25°C
using the PDIP package.
+25°C
+25°C
Sourcing: 0mA ≤ I
OUT
≤ 15mA
Sinking: -15mA ≤ I
OUT
≤ 0mA
ppm/mA
∆V
OUT
/
∆I
OUT
Load Regulation (Note 2)
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
6 _______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(VIN= +10V, I
OUT
= 0mA, TA = +25°C, unless otherwise noted.)
2.0
-1.5
-55 -15 65
MAX6250
NORMALIZED OUTPUT VOLTAGE
vs. TEMPERATURE
-1.0
1.0
MAX6225
toc
01
TEMPERATURE (°C)
∆V
OUT
(mV)
∆V
OUT
(ppm)
25 105-35 5 8545 125
0.5
0
-0.5
1.5
400
-300
-200
200
100
0
-100
300
-20
-10
0
10
20
30
40
50
60
0 5 10 15 20 25 30 35 40
CHANGE IN OUTPUT VOLTAGE
vs. INPUT VOLTAGE
V
IN
(V)
∆V
OUT
(ppm)
MAX6225
toc
07
-55 -15 65
MAX6241
NORMALIZED OUTPUT VOLTAGE
vs. TEMPERATURE
-1
1.0
MAX6225
toc
02
TEMPERATURE (°C)
∆V
OUT
(mV)
∆V
OUT
(ppm)
25 105-35 5 8545 125
0.5
0
-0.5
1.5
-250
-125
0
125
250
375
-0.4
-0.3
-0.2
-0.1
00
0.1
0.2
0.3
0.4
0.5
0.6
0.7
-160
-120
-80
-40
40
80
120
160
200
240
280
-55 -15 65
MAX6225
NORMALIZED OUTPUT VOLTAGE
vs. TEMPERATURE
MAX6225
toc
03
TEMPERATURE (°C)
∆V
OUT
(mV)
∆V
OUT
(ppm)
25 105-35 5 8545 125
-250
-200
-150
-100
-50
0
50
100
150
200
-40 -30 -20 -10 0 10 20 30 40
MAX6225
CHANGE IN OUTPUT VOLTAGE
vs. OUTPUT CURRENT
I
OUT
(mA)
∆V
OUT
(µV)
TA = +85°C
TA = -40°C
TA = +25°C
MAX6225
toc
06
-300
-200
-100
0
100
200
300
-40 -30 -20 -10 0 10 20 30 40
MAX6241
CHANGE IN OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX6225
toc
05
I
OUT
(mA)
∆V
OUT
(µV)
TA = +25°C
T
A
= -40°C
T
A
= +85°C
-400
-300
-200
-100
0
100
200
300
-40 -30 -20 -10 0 10 20 30 40
MAX6250
CHANGE IN OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX6225
toc
04
I
OUT
(mA)
∆V
OUT
(µV)
TA = +25°C
TA = -40°C
TA = +85°C
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
0 5 10 15 20 25 30 35 40
SUPPLY CURRENT vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
MAX6225
MAX6241
MAX6250
MAX6225 toc08
1.0
1.5
2.0
2.5
3.0
3.5
-55 -35 -15 5 25 45 65 85 105 125
SUPPLY CURRENT vs. TEMPERATURE
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
MAX6241
MAX6250
MAX6225
MAX6225 toc09
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
_______________________________________________________________________________________ 7
____________________________Typical Operating Characteristics (continued)
(VIN= 10V, I
OUT
= 0mA, TA = +25°C, unless otherwise noted.)
50
45
40
35
30
25
20
15
10
OUTPUT NOISE DENSITY (nV/÷ Hz)
5
0
10 100 1k 10k
C
= CNR = 0µF
OUT
MAX6225
OUTPUT NOISE-VOLTAGE
DENSITY vs. FREQUENCY
90
80
MAX6225 toc10
CNR = 0µF
CNR = 1µF
FREQUENCY (Hz)
70
60
50
40
30
20
OUTPUT NOISE DENSITY (nV/÷ Hz)
10
0
MAX6225
0.1Hz to 10Hz NOISE
MAX6225 toc13
C
OUT
MAX6241
OUTPUT NOISE-VOLTAGE
DENSITY vs. FREQUENCY
CNR = 0µF
CNR = 1µF
10 100 1k 10k
FREQUENCY (Hz)
MAX6241
0.1Hz to 10Hz NOISE
= CNR = 0µF
MAX6225 toc14
MAX6225 toc11
MAX6250
OUTPUT NOISE-VOLTAGE
DENSITY vs. FREQUENCY
100
90
80
70
60
50
40
30
20
OUTPUT NOISE DENSITY (nV/÷ Hz)
10
0
10 100 1k 10k
CNR = 0µF
CNR = 1µF
FREQUENCY (Hz)
MAX6250
0.1Hz to 10Hz NOISE
C
= CNR = 0µF
OUT
MAX6225 toc12
MAX6225 toc15
, 0.5µV/div
OUT
V
1sec/div
OUTPUT IMPEDANCE vs. FREQUENCY
100
10
1
OUTPUT IMPEDANCE (Ω)
I
0.1
0.01
= 5mA
SINK
10 1M10k
100 1k 100k
FREQUENCY (Hz)
I
SOURCE
= 5mA
, 1µV/div
OUT
V
MAX6225 toc16
RIPPLE REJECTION (dB)
1sec/div
RIPPLE REJECTION
120
vs. FREQUENCY (C
110
100
90
80
70
60
MAX6225
MAX6250
10 100 1k 10k
FREQUENCY (Hz)
NR
= 1µF)
MAX6241
, 1µV/div
OUT
V
MAX6225 toc17
RIPPLE REJECTION (dB)
1sec/div
RIPPLE REJECTION
95
vs. FREQUENCY (C
MAX6241
90
85
80
75
70
65
60
10 100 1k 10k
MAX6250
FREQUENCY (Hz)
NR
= 0µF)
MAX6225
MAX6607/08 toc18
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
8 _______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(VIN= 10V, I
OUT
= 0mA, T
A
= +25°C, unless otherwise noted.)
1µs/div
LOAD-TRANSIENT RESPONSE
B
A
A: I
OUT
(±10mA SOURCE AND SINK), 20mA/div, AC COUPLED
B: V
OUT
, 20mV/div, AC COUPLED
+10mA
-10mA
VIN = 10V
C
OUT
= CNR = 0µF
MAX6225 toc21
1µs/div
MAX6241
TURN-ON AND TURN-OFF TRANSIENT RESPONSE
B
A
A: VIN, 10V/div
B: V
OUT
, 1V/div
+10V
0
CIN = C
OUT
= CNR = 0µF
MAX6225 toc23
1µs/div
MAX6225
TURN-ON AND TURN-OFF TRANSIENT RESPONSE
B
A
A: VIN, 10V/div
B: V
OUT
, 1V/div
+10V
0
CIN = C
OUT
= CNR = 0µF
MAX6225 toc22
1µs/div
MAX6250
TURN-ON AND TURN-OFF TRANSIENT RESPONSE
B
A
A: VIN, 10V/div
B: V
OUT
, 1V/div
+10V
0
CIN = C
OUT
= CNR = 0µF
MAX6225 toc24
LOAD-TRANSIENT RESPONSE (SOURCING)
A
B
MAX6225 toc19
0mA
-10mA
LOAD-TRANSIENT RESPONSE (SINKING)
A
B
MAX6225 toc20
10mA
0mA
2µs/div
A: I
, 10mA/div (SOURCING)
OUT
B: V
, 500µV/div
OUT
, 10mA/div (SINKING)
A: I
OUT
, 500µV/div
B: V
OUT
2µs/div
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
_______________________________________________________________________________________ 9
Detailed Description
Temperature Stability
The MAX6225/MAX6241/MAX6250 are highly stable,
low-noise voltage references that use a low-power temperature-compensation scheme to achieve laboratorystandard temperature stability. This produces a nearly
flat temperature curve, yet does not require the power
associated with heated references.
The output voltage can be trimmed a minimum of 0.6%
by connecting a 10kΩ potentiometer between OUT and
GND, and connecting its tap to the TRIM pin, as shown
in Figure 1. The external trimming does not affect temperature stability.
Noise Reduction
To augment wideband noise reduction, add a 1µF
capacitor to the NR pin (Figure 2). Larger values do not
improve noise appreciably (see Typical Operating
Characteristics).
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.
Bypassing
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.
Applications Information
Negative Regulator
Figure 3 shows how both a +5V and -5V precision reference can be obtained from a single unregulated +5V
supply. A MAX865 generates approximately ±9V to
operate the MAX6250 reference and MAX432 inverting
amplifier. The +5V is inverted by the MAX432 chopperstabilized amplifier. Resistor R1 is optional, and may be
used to trim the ±5V references. R2 and R4 should be
matched, both in absolute resistance and temperature
coefficient. R3 is optional, and is adjusted to set the -5V
reference.
_____________________Pin Description
NAME FUNCTION
1, 7, 8 I.C.
Internally Connected. Do not use.
2 IN Positive Power-Supply Input
PIN
4 GND Ground
3 NR
Noise Reduction. Optional capacitor
connection for wideband noise
reduction. Leave open if not used
(Figure 2).
6 OUT Voltage Reference Output
5 TRIM
External Trim Input. Allows ±1%
output adjustment (Figure 1).
Leave open if not used.
MAX6225
MAX6241
MAX6250
IN
8V TO 36V INPUT
REFERENCE OUT
OUT
TRIM
10k
NR
GND
MAX6225
MAX6241
MAX6250
IN
8V TO 36V INPUT
REFERENCE OUT
OUT
TRIM
NR
*OPTIONAL
*
1µF
GND
Figure 1. Output Voltage Adjustment Figure 2. Noise-Reduction Capacitor
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
10 ______________________________________________________________________________________
Figure 3. +5V and -5V References from a Single +5V Supply
Ordering Information (continued)
___________________Chip Information
TRANSISTOR COUNT: 435
MAX6241BCSA
MAX6241ACPA
MAX6241BCPA
MAX6241ACSA 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
MAX6241AEPA -40°C to +85°C 3.08 Plastic DIP
PART TEMP. RANGE
MAX
TEMPCO
(ppm/°C)
PINPACKAGE
MAX6250BEPA -40°C to +85°C 7.08 Plastic DIP
MAX6250AESA -40°C to +85°C 3.08 SO
MAX6250BESA -40°C to +85°C 7.08 SO
MAX6250AMJA -55°C to +125°C 5.08 CERDIP
MAX6241BEPA -40°C to +85°C 7.08 Plastic DIP
MAX6241AESA -40°C to +85°C 3.08 SO
MAX6241BESA -40°C to +85°C 7.08 SO
MAX6241AMJA -55°C to +125°C 5.08 CERDIP
MAX6241BMJA -55°C to +125°C 8.08 CERDIP
MAX6250ACPA
0°C to +70°C 2.08 Plastic DIP
MAX6250BCPA 0°C to +70°C 5.08 Plastic DIP
MAX6250ACSA 0°C to +70°C 2.08 SO
MAX6250BCSA 0°C to +70°C 5.08 SO
MAX6250BMJA -55°C to +125°C 8.08 CERDIP
MAX6250AEPA -40°C to +85°C 3.08 Plastic DIP
+5V INPUT
VCCV+
3.3µF
3.3µF
C1+
C1-
MAX865
C2+
C2-
GND
IN
C1
2.2µF
V-
C2
1µF
NR
MAX6250
GND
OUT
TRIM
R1
10kΩ
C3
2.2µF
100kΩ
1kΩ
R2
R3
C4
1µF
MAX432
+REFERENCE OUT
2.2µF
R4
100kΩ
-REFERENCE OUT
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
______________________________________________________________________________________ 11
________________________________________________________Package Information
PDIPN.EPS
SOICN.EPS
MAX6225/MAX6241/MAX6250
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage References
CDIPS.EPS
___________________________________________Package Information (continued)
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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