MAX6012/6021/6025/
6030/6041/6045/6050
General Description
The MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/
MAX6045/MAX6050 precision, low-dropout, micropower
voltage references are available in miniature SOT23-3
surface-mount packages. They feature a proprietary
curvature-correction circuit and laser-trimmed thin-film
resistors that result in a low temperature coefficient of
<15ppm/°C and initial accuracy of better than 0.2%.
These devices are specified over the extended tempera-
ture range.
These series-mode voltage references draw only 27μA
of quiescent supply current and can sink or source up to
500μA of load current. Unlike conventional shunt-mode
(two-terminal) references that waste supply current and
require an external resistor, devices in the MAX6012
family offer a supply current that’s virtually independent
of supply voltage (with only a 0.8μA/V variation with
supply voltage) and do not require an external resistor.
Additionally, these internally compensated devices do
not require an external compensation capacitor and are
stable with up to 2.2nF of load capacitance. Eliminating
the external compensation capacitor saves valuable
board area in space-critical applications. Their low drop-
out voltage and supply-independent, ultra-low supply
current make these devices ideal for battery-operated,
low-voltage systems.
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Features
●
0.2% (max) Initial Accuracy
●
15ppm/°C (max) Temperature Coefficient
● 35μA (max) Quiescent Supply Current
● 0.8μA/V Supply Current Variation with V
IN
● ±500μA Output Source and Sink Current
● 100mV Dropout at 500μA Load Current
● 0.12μV/μA Load Regulation
● 8μV/V Line Regulation
●
Stable with C
LOAD
= 0 to 2.2nF
Ordering Information
PART
MAX6012AEUR-T
MAX6012BEUR-T
MAX6021AEUR-T
MAX6021BEUR-T
MAX6025AEUR-T
MAX6025BEUR-T
MAX6030AEUR-T
MAX6030BEUR-T
MAX6041AEUR-T
MAX6041BEUR-T
MAX6045AEUR-T
MAX6045BEUR-T
MAX6050AEUR-T
MAX6050BEUR-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
3 SOT23-3
TOP
MARK
FZAP
FZDA
FZAU
FZDF
FZAQ
FZDB
FZDW
FZDX
FZAR
FZDC
FZAS
FZDD
FZAT
FZDE
Applications
●
●
●
●
●
Hand-Held Equipment
Data Acquisition Systems
Industrial and Process-Control Systems
Battery-Operated Equipment
Hard-Disk Drives
Selector Guide
PART
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
OUTPUT
VOLTAGE (V)
1.247
2.048
2.500
3.000
4.096
4.500
5.000
INPUT VOLTAGE (V)
2.5 to 12.6
2.5 to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
Typical Operating Circuit
+SUPPLY INPUT (SEE SELECTOR GUIDE)
IN
*
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
GND
OUT
REFERENCE
OUT
2.2nF MAX*
Pin Configuration appears at end of data sheet.
*CAPACITORS ARE OPTIONAL
19-4777; Rev 3; 4/01
MAX6012/6021/6025/
6030/6041/6045/6050
Absolute Maximum Ratings
(Voltages Referenced to GND)
IN ........................................................................-0.3V
to +13.5V
OUT
............................................................-0.3V
to (V
IN
+ 0.3V)
Output Short Circuit to GND or IN (V
IN
< 6V)
...........Continuous
Output Short Circuit to GND or IN (V
IN
≥ 6V)
....................... 60s
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Continuous Power Dissipation (T
A
= +70°C)
3-Pin SOT23-3 (derate 4.0mW/°C above +70°C) .......320mW
Operating Temperature Range
........................... -40°C to +85°C
Storage Temperature Range
............................ -65°C to +150°C
Lead Temperature (soldering, 10s)
................................. +300°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.
Electrical Characteristics—MAX6012
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
MAX6012A
Output Voltage
V
OUT
T
A
= +25°C
MAX6012B
T
A
= 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
T
A
= -40°C to +85°C
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
Line Regulation
Load Regulation
OUT Short-Circuit Current
Temperature Hysteresis
(Note 3)
Long-Term Stability
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
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SYMBOL
CONDITIONS
MIN
1.243
-0.32
1.241
-0.48
TYP
1.247
1.247
6
6
6
6
8
0.12
0.15
4
4
130
MAX
1.251
0.32
1.253
0.48
15
20
25
30
80
0.50
0.60
UNITS
V
%
V
%
MAX6012A
MAX6012B
ppm/°C
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔI
OUT
I
SC
2.5V ≤ V
IN
≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 500μA
Sinking: -500μA ≤ I
OUT
≤ 0
Short to GND
Short to IN
μV/V
μV/μA
mA
ppm
ppm/
1000h
μVp-p
μV
RMS
dB
μs
ΔV
OUT
/
time
1000hr at T
A
= +25°C
50
e
OUT
ΔV
OUT
/
ΔV
IN
t
R
C
OUT
V
IN
I
IN
I
IN
/V
IN
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value,
C
OUT
= 50pF
Note 4
Guaranteed by line-regulation test
2.5V ≤ V
IN
≤ 12.6V
0
2.5
12
65
86
30
2.2
12.6
27
0.8
35
2.0
nF
V
μA
μA/V
Maxim Integrated
│
2
MAX6012/6021/6025/
6030/6041/6045/6050
Electrical Characteristics—MAX6021
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
MAX6021A
Output Voltage
V
OUT
T
A
= +25°C
MAX6021B
T
A
= 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
T
A
= -40°C to +85°C
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
Line Regulation
Load Regulation
OUT Short-Circuit Current
Temperature Hysteresis
(Note 3)
Long-Term Stability
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
2.5V ≤ V
IN
≤ 12.6V
Guaranteed by line-regulation test
2.5
27
0.8
12.6
35
2.0
V
μA
μA/V
e
OUT
ΔV
OUT
/
ΔV
IN
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value,
C
OUT
= 50pF
Note 4
0
35
105
84
70
2.2
μVp-p
μV
RMS
dB
μs
nF
ΔV
OUT
/
time
1000hr at T
A
= +25°C
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔI
OUT
I
SC
2.5V ≤ V
IN
≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 500μA
Sinking: -500μA ≤ I
OUT
≤ 0
Short to GND
Short to IN
MAX6021A
MAX6021B
2.043
-0.24
2.040
-0.39
6
6
6
6
10
0.12
0.18
4
4
130
50
2.048
2.048
2.053
0.24
2.056
0.39
15
20
25
30
100
0.55
0.70
μV/V
μV/μA
mA
ppm
ppm/
1000h
ppm/°C
V
%
V
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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Maxim Integrated
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3
MAX6012/6021/6025/
6030/6041/6045/6050
Electrical Characteristics—MAX6025
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
MAX6025A
Output Voltage
V
OUT
T
A
= +25°C
MAX6025B
T
A
= 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
T
A
= -40°C to +85°C
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
Line Regulation
Load Regulation
Dropout Voltage
(Note 5)
OUT Short-Circuit Current
Temperature Hysteresis
(Note 3)
Long-Term Stability
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
2.5V ≤ V
IN
≤ 12.6V
Guaranteed by line-regulation test
V
OUT
+ 0.2
27
0.8
12.6
35
2.0
V
μA
μA/V
e
OUT
ΔV
OUT
/
ΔV
IN
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value,
C
OUT
= 50pF
Note 4
0
50
125
82
85
2.2
μVp-p
μV
RMS
dB
μs
nF
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔI
OUT
V
IN
-
V
OUT
I
SC
ΔV
OUT
/
time
ΔV
OUT
/
time
1000hr at T
A
= +25°C
MAX6025A
MAX6025B
2.495
-0.20
2.490
-0.40
6
6
6
6
15
0.14
0.18
100
4
4
130
50
2.500
2.500
2.505
0.20
2.510
0.40
15
20
25
30
140
0.60
0.80
200
μV/V
μV/μA
mV
mA
ppm
ppm/
1000h
ppm/°C
V
%
V
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
(V
OUT
+ 0.2V) ≤ V
IN
≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 500μA
Sinking: -500μA ≤ I
OUT
≤ 0
I
OUT
= 500μA
Short to GND
Short to IN
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Maxim Integrated
│
4
MAX6012/6021/6025/
6030/6041/6045/6050
Electrical Characteristics—MAX6030
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
OUTPUT
MAX6030A
Output Voltage
V
OUT
T
A
= +25°C
MAX6030B
T
A
= 0°C to +70°C
Output Voltage Temperature
Coefficient (Note 2)
V
OUT
T
A
= -40°C to +85°C
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
Line Regulation
Load Regulation
Dropout Voltage
(Note 5)
OUT Short-Circuit Current
Temperature Hysteresis
(Note 3)
Long-Term Stability
DYNAMIC
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
I
IN
/V
IN
2.5V ≤ V
IN
≤ 12.6V
Guaranteed by line-regulation test
V
OUT
+ 0.2
27
0.8
12.6
35
2.0
V
μA
μA/V
e
OUT
ΔV
OUT
/
ΔV
IN
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To V
OUT
= 0.1% of final value,
C
OUT
= 50pF
Note 4
0
65
150
80
100
2.2
μVp-p
μV
RMS
dB
μs
nF
ΔV
OUT
/
time
1000hr at T
A
= +25°C
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔI
OUT
V
IN
-
V
OUT
I
SC
MAX6030A
MAX6030B
2.994
-0.20
2.988
-0.40
6
6
6
6
20
0.14
0.18
100
4
4
130
50
3.000
3.000
3.006
0.20
3.012
0.40
15
20
25
30
150
0.60
0.80
200
μV/V
μV/μA
mV
mA
ppm
ppm/
1000h
ppm/°C
V
%
V
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
(V
OUT
+ 0.2V) ≤ V
IN
≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 500μA
Sinking: -500μA ≤ I
OUT
≤ 0
I
OUT
= 500μA
Short to GND
Short to IN
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Maxim Integrated
│
5
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