MAX6050AEUR+ [MAXIM]
Three Terminal Voltage Reference, 1 Output, 5V, PDSO3, SOT-23, 3 PIN;
| 型号： | MAX6050AEUR+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Three Terminal Voltage Reference, 1 Output, 5V, PDSO3, SOT-23, 3 PIN 光电二极管 |
| 文件： | 总14页 (文件大小：273K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-4777; Rev 3; 4/01
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
General Description
Features
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 temper-
ature range.
ꢀ 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
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 cur-
rent 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 vari-
ation 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 capac-
itance. Eliminating the external compensation capacitor
saves valuable board area in space-critical applications.
Their low dropout voltage and supply-independent,
ultra-low supply current make these devices ideal for
battery-operated, low-voltage systems.
ꢀ Stable with C
= 0 to 2.2nF
LOAD
Ordering Information
PIN-
PACKAGE
TOP
MARK
PART
TEMP. RANGE
MAX6012AEUR-T -40°C to +85°C 3 SOT23-3
MAX6012BEUR-T -40°C to +85°C 3 SOT23-3
MAX6021AEUR-T -40°C to +85°C 3 SOT23-3
MAX6021BEUR-T -40°C to +85°C 3 SOT23-3
MAX6025AEUR-T -40°C to +85°C 3 SOT23-3
MAX6025BEUR-T -40°C to +85°C 3 SOT23-3
MAX6030AEUR-T -40°C to +85°C 3 SOT23-3
MAX6030BEUR-T -40°C to +85°C 3 SOT23-3
MAX6041AEUR-T -40°C to +85°C 3 SOT23-3
MAX6041BEUR-T -40°C to +85°C 3 SOT23-3
MAX6045AEUR-T -40°C to +85°C 3 SOT23-3
MAX6045BEUR-T -40°C to +85°C 3 SOT23-3
MAX6050AEUR-T -40°C to +85°C 3 SOT23-3
MAX6050BEUR-T -40°C to +85°C 3 SOT23-3
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
Typical Operating Circuit
Selector Guide
OUTPUT
VOLTAGE (V)
+SUPPLY INPUT (SEE SELECTOR GUIDE)
PART
INPUT VOLTAGE (V)
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
1.247
2.048
2.500
3.000
4.096
4.500
5.000
2.5 to 12.6
2.5 to 12.6
IN
OUT
REFERENCE
OUT
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
GND
(V
(V
(V
(V
(V
+ 200mV) to 12.6
+ 200mV) to 12.6
+ 200mV) to 12.6
+ 200mV) to 12.6
+ 200mV) to 12.6
OUT
OUT
OUT
OUT
OUT
*
2.2nF MAX*
Pin Configuration appears at end of data sheet.
*CAPACITORS ARE OPTIONAL
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND)
Continuous Power Dissipation (T = +70°C)
A
IN.........................................................................-0.3V to +13.5V
3-Pin SOT23-3 (derate 4.0mW/°C above +70°C) ........320mW
OUT .............................................................-0.3V to (V + 0.3V)
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
IN
Output Short Circuit to GND or IN (V < 6V) ............Continuous
IN
Output Short Circuit to GND or IN (V ≥ 6V) .........................60s
IN
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 = +5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
OUT
A
MIN
PARAMETER
OUTPUT
SYMBOL
CONDITIONS
MIN
TYP
1.247
1.247
MAX
UNITS
1.243
-0.32
1.241
-0.48
1.251
0.32
1.253
0.48
15
V
%
V
MAX6012A
Output Voltage
V
T
= +25°C
OUT
OUT
A
MAX6012B
MAX6012A
MAX6012B
%
T
A
T
A
T
A
T
A
= 0°C to +70°C
= -40°C to +85°C
= 0°C to +70°C
= -40°C to +85°C
6
6
6
6
20
Output Voltage Temperature
Coefficient (Note 2)
V
ppm/°C
25
30
∆V
/
/
OUT
Line Regulation
2.5V ≤ V ≤ 12.6V
8
80
µV/V
µV/µA
mA
IN
∆V
IN
Sourcing: 0 ≤ I
≤ 500µA
0.12
0.15
4
0.50
0.60
OUT
∆V
OUT
∆I
OUT
Load Regulation
Sinking: -500µA ≤ I
Short to GND
Short to IN
≤ 0
OUT
OUT Short-Circuit Current
I
SC
4
Temperature Hysteresis
(Note 3)
130
50
ppm
∆V
/
/
ppm/
1000hr
OUT
time
Long-Term Stability
DYNAMIC
1000hr at T = +25°C
A
f = 0.1Hꢀ to 10Hꢀ
f = 10Hꢀ to 10kHꢀ
12
65
µVp-p
Noise Voltage
e
OUT
µV
RMS
∆V
OUT
∆V
Ripple Rejection
V
IN
= 5V 100mV, f = 120Hꢀ
86
30
dB
IN
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
µs
nF
R
OUT
C
OUT
Note 4
Guaranteed by line-regulation test
2.5V ≤ V ≤ 12.6V
0
2.2
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
2.5
12.6
35
V
IN
I
27
µA
IN
I
/V
0.8
2.0
µA/V
IN IN
IN
2
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6021
(V = +5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
OUT
A
MIN
PARAMETER
OUTPUT
SYMBOL
CONDITIONS
MIN
TYP
2.048
2.048
MAX
UNITS
2.043
-0.24
2.040
-0.39
2.053
0.24
2.056
0.39
15
V
%
V
MAX6021A
Output Voltage
V
T
= +25°C
OUT
OUT
A
MAX6021B
MAX6021A
MAX6021B
%
T
A
T
A
T
A
T
A
= 0°C to +70°C
= -40°C to +85°C
= 0°C to +70°C
= -40°C to +85°C
6
6
6
6
20
Output Voltage Temperature
Coefficient (Note 2)
V
ppm/°C
25
30
∆V
/
/
OUT
Line Regulation
2.5V ≤ V ≤ 12.6V
10
100
µV/V
µV/µA
mA
IN
∆V
IN
Sourcing: 0 ≤ I
≤ 500µA
0.12
0.18
4
0.55
0.70
OUT
∆V
OUT
∆I
OUT
Load Regulation
Sinking: -500µA ≤ I
Short to GND
Short to IN
≤ 0
OUT
OUT Short-Circuit Current
I
SC
4
Temperature Hysteresis
(Note 3)
130
50
ppm
∆V
/
/
ppm/
1000hr
OUT
time
Long-Term Stability
DYNAMIC
1000hr at T = +25°C
A
f = 0.1Hꢀ to 10Hꢀ
f = 10Hꢀ to 10kHꢀ
35
µVp-p
Noise Voltage
e
OUT
105
µV
RMS
∆V
OUT
∆V
Ripple Rejection
V
IN
= 5V 100mV, f = 120Hꢀ
84
70
dB
IN
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
µs
nF
R
OUT
C
OUT
Note 4
Guaranteed by line-regulation test
2.5V ≤ V ≤ 12.6V
0
2.2
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
2.5
12.6
35
V
IN
I
27
µA
IN
I
/V
0.8
2.0
µA/V
IN IN
IN
_______________________________________________________________________________________
3
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6025
(V = +5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
OUT
A
MIN
PARAMETER
OUTPUT
SYMBOL
CONDITIONS
MIN
TYP
2.500
2.500
MAX
UNITS
2.495
-0.20
2.490
-0.40
2.505
0.20
2.510
0.40
15
V
%
V
MAX6025A
Output Voltage
V
T
= +25°C
OUT
OUT
A
MAX6025B
MAX6025A
MAX6025B
%
T
A
T
A
T
A
T
A
= 0°C to +70°C
= -40°C to +85°C
= 0°C to +70°C
= -40°C to +85°C
6
6
6
6
20
Output Voltage Temperature
Coefficient (Note 2)
V
ppm/°C
25
30
∆V
/
/
OUT
Line Regulation
Load Regulation
(V
+ 0.2V) ≤ V ≤ 12.6V
15
140
µV/V
µV/µA
mV
OUT
IN
∆V
IN
Sourcing: 0 ≤ I
≤ 500µA
0.14
0.18
0.60
0.80
OUT
∆V
OUT
∆I
OUT
Sinking: -500µA ≤ I
≤ 0
OUT
Dropout Voltage
(Note 5)
V
IN
-
I
= 500µA
100
200
OUT
V
OUT
Short to GND
Short to IN
4
4
OUT Short-Circuit Current
I
mA
SC
Temperature Hysteresis
(Note 3)
∆V
/
/
OUT
time
130
50
ppm
∆V
OUT
time
ppm/
1000hr
Long-Term Stability
DYNAMIC
1000hr at T = +25°C
A
f = 0.1Hꢀ to 10Hꢀ
f = 10Hꢀ to 10kHꢀ
50
µVp-p
Noise Voltage
e
OUT
125
µV
RMS
∆V
/
OUT
Ripple Rejection
V
= 5V 100mV, f = 120Hꢀ
82
85
dB
IN
∆V
IN
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
µs
nF
R
OUT
C
OUT
Note 4
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
0
2.2
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
V
+ 0.2
12.6
35
V
IN
OUT
I
27
µA
IN
I
/V
0.8
2.0
µA/V
IN IN
OUT
IN
4
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6030
(V = +5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
OUT
A
MIN
PARAMETER
OUTPUT
SYMBOL
CONDITIONS
MIN
TYP
3.000
3.000
MAX
UNITS
2.994
-0.20
2.988
-0.40
3.006
0.20
3.012
0.40
15
V
%
V
MAX6030A
Output Voltage
V
T
= +25°C
OUT
OUT
A
MAX6030B
MAX6030A
MAX6030B
%
T
A
T
A
T
A
T
A
= 0°C to +70°C
= -40°C to +85°C
= 0°C to +70°C
= -40°C to +85°C
6
6
6
6
20
Output Voltage Temperature
Coefficient (Note 2)
V
ppm/°C
25
30
∆V
/
/
OUT
Line Regulation
Load Regulation
(V
) +0.2V) ≤ V ≤ 12.6V
20
150
µV/V
µV/µA
mV
OUT
IN
∆V
IN
Sourcing: 0 ≤ I
≤ 500µA
0.14
0.18
0.60
0.80
OUT
∆V
OUT
∆I
OUT
Sinking: -500µA ≤ I
≤ 0
OUT
Dropout Voltage
(Note 5)
V
IN
-
I
= 500µA
100
200
OUT
V
OUT
Short to GND
Short to IN
4
4
OUT Short-Circuit Current
I
mA
SC
Temperature Hysteresis
(Note 3)
130
50
ppm
∆V
/
/
ppm/
1000hr
OUT
time
Long-Term Stability
DYNAMIC
1000hr at T = +25°C
A
f = 0.1Hꢀ to 10Hꢀ
f = 10Hꢀ to 10kHꢀ
65
µVp-p
Noise Voltage
e
OUT
150
µV
RMS
∆V
OUT
∆V
Ripple Rejection
V
IN
= 5V 100mV, f = 120Hꢀ
80
dB
IN
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
100
µs
nF
R
OUT
C
Note 4
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
V
+ 0.2
12.6
35
V
IN
OUT
I
IN
27
µA
I
/V
IN IN
0.8
2.0
µA/V
OUT
IN
_______________________________________________________________________________________
5
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6041
(V = +5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
4.096
4.096
MAX
UNITS
OUTPUT
4.088
-0.20
4.080
-0.39
4.104
0.20
4.112
0.39
15
V
%
V
MAX6041A
Output Voltage
V
T
= +25°C
OUT
OUT
A
MAX6041B
MAX6041A
MAX6041B
%
T
A
T
A
T
A
T
A
= 0°C to +70°C
= -40°C to +85°C
= 0°C to +70°C
= -40°C to +85°C
6
6
6
6
20
Output Voltage Temperature
Coefficient (Note 2)
V
ppm/°C
25
30
∆V
/
/
OUT
Line Regulation
Load Regulation
(V
+ 0.2V) ≤ V ≤ 12.6V
25
160
µV/V
µV/µA
mV
OUT
IN
∆V
IN
Sourcing: 0 ≤ I
≤ 500µA
0.15
0.20
0.70
0.90
OUT
∆V
OUT
∆I
OUT
Sinking: -500µA ≤ I
≤ 0
OUT
Dropout Voltage
(Note 5)
V
IN
-
I
= 500µA
100
200
OUT
V
OUT
Short to GND
Short to IN
4
4
OUT Short-Circuit Current
I
mA
SC
Temperature Hysteresis
(Note 3)
∆V
/
/
OUT
time
1000hr at T = +25°C
130
50
ppm
A
∆V
OUT
time
ppm/
1000hr
Long-Term Stability
DYNAMIC
1000hr at T = +25°C
A
f = 0.1 Hꢀ to 10Hꢀ
f = 10Hꢀ to 10kHꢀ
100
200
µVp-p
Noise Voltage
e
OUT
µV
RMS
∆V
/
OUT
Ripple Rejection
V
IN
= 5V 100mV, f = 120Hꢀ
77
dB
∆V
IN
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
160
µs
nF
R
OUT
C
Note 4
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
V
+ 0.2
12.6
35
V
IN
OUT
I
IN
27
µA
I
/V
IN IN
0.8
2.0
µA/V
OUT
IN
6
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6045
(V = +5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
OUT
A
MIN
PARAMETER
OUTPUT
SYMBOL
CONDITIONS
MIN
TYP
4.500
4.500
MAX
UNITS
4.491
-0.20
4.482
-0.40
4.509
0.20
4.518
0.40
15
V
%
V
MAX6045A
Output Voltage
V
T
= +25°C
OUT
OUT
A
MAX6045B
MAX6045A
MAX6045B
%
T
A
T
A
T
A
T
A
= 0°C to +70°C
= -40°C to +85°C
= 0°C to +70°C
= -40°C to +85°C
6
6
6
6
20
Output Voltage Temperature
Coefficient (Note 2)
V
ppm/°C
25
30
∆V
/
/
OUT
Line Regulation
Load Regulation
(V
+ 0.2V) ≤ V ≤ 12.6V
25
160
µV/V
µV/µA
mV
OUT
IN
∆V
IN
Sourcing: 0 ≤ I
≤ 500µA
0.16
0.22
0.80
1.00
OUT
∆V
OUT
∆I
OUT
Sinking: -500µA ≤ I
≤ 0
OUT
Dropout Voltage
(Note 5)
V
IN
-
I
= 500µA
100
200
OUT
V
OUT
Short to GND
Short to IN
4
4
OUT Short-Circuit Current
I
mA
SC
Temperature Hysteresis
(Note 3)
∆V
/
/
OUT
time
130
50
ppm
∆V
OUT
time
ppm/
1000hr
Long-Term Stability
DYNAMIC
1000hr at T = +25°C
A
f = 0.1Hꢀ to 10Hꢀ
f = 10Hꢀ to 10kHꢀ
110
215
µVp-p
Noise Voltage
e
OUT
µV
RMS
∆V
/
OUT
Ripple Rejection
V
IN
= 5V 100mV, f = 120Hꢀ
76
dB
∆V
IN
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
180
µs
nF
R
OUT
C
Note 4
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
V
+ 0.2
12.6
35
V
IN
OUT
I
IN
27
µA
I
/V
IN IN
0.8
2.0
µA/V
OUT
IN
_______________________________________________________________________________________
7
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
ELECTRICAL CHARACTERISTICS—MAX6050
(V = +5.5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MAX A
OUT
A
MIN
PARAMETER
OUTPUT
SYMBOL
CONDITIONS
MIN
TYP
5.000
5.000
MAX
UNITS
4.990
-0.20
4.980
-0.40
5.010
0.20
5.020
0.40
15
V
%
V
MAX6050A
Output Voltage
V
OUT
T
= +25°C
A
MAX6050B
MAX6050A
MAX6050B
%
T
A
T
A
T
A
T
A
= 0°C to +70°C
= -40°C to +85°C
= 0°C to +70°C
= -40°C to +85°C
6
6
6
6
20
Output Voltage Temperature
Coefficient (Note 2)
TCV
ppm/°C
OUT
25
30
∆V
/
/
OUT
∆VIN
Line Regulation
Load Regulation
(V
+ 0.2V) ≤ V ≤ 12.6V
25
160
µV/V
µV/µA
mV
OUT
IN
Sourcing: 0 ≤ I
≤ 500µA
0.17
0.24
0.85
1.10
OUT
∆V
OUT
OUT
∆I
Sinking: -500µA ≤ I
≤ 0
OUT
Dropout Voltage
(Note 5)
V
IN
-
I
= 500µA
100
200
OUT
V
OUT
Short to GND
Short to IN
4
4
OUT Short-Circuit Current
I
mA
SC
Temperature Hysteresis
(Note 3)
130
50
ppm
∆V
/
/
ppm/
1000hr
OUT
time
Long-Term Stability
DYNAMIC
1000hr at T = +25°C
A
f = 0.1 Hꢀ to 10Hꢀ
f =10Hꢀ to 10kHꢀ
120
240
µVp-p
Noise Voltage
e
OUT
µV
RMS
∆V
OUT
∆V
Ripple Rejection
V
IN
= 5V 100mV, f = 120Hꢀ
72
dB
IN
Turn-On Settling Time
t
To V
= 0.1% of final value, C = 50pF
OUT
220
µs
nF
R
OUT
Capacitive-Load Stability Range
INPUT
C
Note 4
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
V
+ 0.2
12.6
35
V
IN
OUT
I
IN
27
µA
I
/V
IN IN
0.8
2.0
µA/V
OUT
IN
Note 1: All devices are 100% production tested at T = +25°C and are guaranteed by design for T = T
to T
, as specified.
MAX
A
A
MIN
Note 2: Temperature Coefficient is measured by the “box” method, i.e., the maximum ∆V
Note 3: Temperature Hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T
Note 4: Not production tested. Guaranteed by design.
is divided by the maximum ∆t.
OUT
to T
.
MIN
MAX
Note 5: Dropout voltage is the minimum input voltage at which V
changes ≤0.2% from V at V = 5.0V (V = 5.5V for MAX6050).
OUT IN IN
OUT
8
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Typical Operating Characteristics
(V = +5V for MAX6012/21/25/30/41/45, V = +5.5V for MAX6050; I
= 0; T = +25°C; unless otherwise noted.) (Note 6)
A
IN
IN
OUT
MAX6012
OUTPUT VOLTAGE
TEMPERATURE DRIFT
MAX6050
OUTPUT VOLTAGE
TEMPERATURE DRIFT
MAX6050
LONG-TERM DRIFT
1.2510
1.2505
1.2500
1.2495
1.2490
1.2485
1.2480
1.2475
1.2470
5.004
5.002
5.000
4.998
4.996
4.994
4.992
4.990
4.988
4.986
5.003
5.002
THREE
TYPICAL PARTS
5.001
5.000
4.999
4.998
4.997
4.996
4.995
4.994
4.993
THREE
THREE
TYPICAL PARTS
TYPICAL PARTS
-40 -20
0
20
40
60
80 100
-40 -20
0
20
40
60
80 100
400
0
0
0
100 200 300
500 600 700 800 900 1000
TEMPERATURE DRIFT (°C)
TEMPERATURE DRIFT (°C)
TIME (h)
MAX6025/MAX6030
DROPOUT VOLTAGE vs.
SOURCE CURRENT
MAX6050
LINE REGULATION
MAX6012
LINE REGULATION
800
600
400
200
0
400
300
200
100
0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
T
A
= +85°C
T = -40°C
A
T
A
= +85°C
T
A
= -40°C
T
= -40°C
A
T
A
= +25°C
T
= +85°C
A
T
A
= +25°C
T
A
= +25°C
-100
-200
2
4
6
8
10
12
14
5
7
9
11
13
200
400
600
800
1000
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
SOURCE CURRENT (µA)
MAX6041/MAX6045/MAX6050
DROPOUT VOLTAGE vs.
SOURCE CURRENT
MAX6012
LOAD REGULATION
MAX6050
LOAD REGULATION
0.4
0.2
0
0.400
0.200
0
0.30
0.25
0.20
0.15
0.10
0.05
0
T
A
= -40°C
T
A
= +85°C
T
A
= -40°C
T
A
= -40°C
T
A
= +85°C
T
A
= +25°C
T
A
= +25°C
T
A
= +25°C
-0.2
-0.4
-0.200
T
A
= +85°C
-0.400
-500 -375 -250 -125
0
125 250 375 500
-500 -375 -250 -125
0
125 250 375 500
200
400
600
800
1000
LOAD CURRENT (µA)
LOAD CURRENT (µA)
SOURCE CURRENT (µA)
_______________________________________________________________________________________
9
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Typical Operating Characteristics (continued)
(V = +5V for MAX6012/21/25/30/41/45, V = +5.5V for MAX6050; I
= 0; T = +25°C; unless otherwise noted.) (Note 6)
A
IN
IN
OUT
MAX6012
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX6050
POWER-SUPPLY REJECTION
vs. FREQUENCY
SUPPLY CURRENT
vs. INPUT VOLTAGE
40
38
36
34
32
30
28
26
24
22
20
100
100
10
1
VALID OVER SPECIFIED
(MIN) TO V (MAX)
V
CC
= 5.5V 0.25V
V
IN
IN
FOR EACH PART
10
1
0.1
0.1
0.01
0.01
2
4
6
8
10
12
14
100
1k
10k
100k
1M
10M
10
100
1k
10k 100k
1M
10M
INPUT VOLTAGE (V)
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX6012
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX6050
OUTPUT IMPEDANCE
vs. FREQUENCY
SUPPLY CURRENT
vs. TEMPERATURE
40
35
30
25
20
1k
1k
100
10
1
100
10
1
V
V
= 12.5V
= 7.5V
IN
IN
V
IN
= 5.5V
V
= 2.5V (MAX6012/MAX6025 ONLY)
IN
0.1
0.1
-40 -20
0
20
40
60
80 100
0.01 0.1
1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
0.01 0.1
1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
TEMPERATURE (°C)
MAX6050
0.1Hz TO 10Hz OUTPUT NOISE
MAX6012
TURN-ON TRANSIENT
MAX6012
0.1Hz TO 10Hz OUTPUT NOISE
V
IN
1V/div
V
OUT
10µV/div
V
OUT
20µV/div
V
OUT
1V/div
1sec/div
10µs/div
1sec/div
10 ______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Typical Operating Characteristics (continued)
(V = +5V for MAX6012/21/25/30/41/45, V = +5.5V for MAX6050; I
= 0; T = +25°C; unless otherwise noted.) (Note 6)
A
IN
IN
OUT
MAX6012
LOAD-TRANSIENT RESPONSE
MAX6050
LOAD-TRANSIENT RESPONSE
MAX6050
TURN-ON TRANSIENT
MAX6012-19
+25µA
-25µA
I
OUT
50µA/div
V
I
IN
2V/div
OUT
40µA/div
V
OUT
50mV/div
V
V
OUT
2V/div
OUT
20mV/div
10µs/div
20µs/div
10µs/div
I
=
25µA, AC-COUPLED
V
IN
= 5.5V, I =
OUT
25µA, AC-COUPLED
OUT
MAX6012
LOAD-TRANSIENT RESPONSE
MAX6050
LOAD-TRANSIENT RESPONSE
MAX6012
LINE-TRANSIENT RESPONSE
MAX6012-22
+500µA
-500µA
I
OUT
500µA/div
I
OUT
1mA/div
V
IN
200mV/div
V
OUT
200mV/div
V
OUT
0.2V/div
V
OUT
100mV/div
10µs/div
20µs/div
2.5µs/div
V
IN
= 5V 0.25V, AC-COUPLED
I
=
500µA, AC-COUPLED
V
IN
= 5.5V, I
= 500µA, AC-COUPLED
OUT
OUT
MAX6050
LINE-TRANSIENT RESPONSE
V
IN
200mV/div
V
OUT
100mV/div
Note 6: Many of the Typical Operating Characteristics of the MAX6012 family are
extremely similar. The extremes of these characteristics are found in the
MAX6012 (1.2V output) and the MAX6050 (5.0V output). The Typical
Operating Characteristics of the remainder of the MAX6012 family typically
lie between these two extremes and can be estimated based on their output
voltage.
2µs/div
= 5.5V 0.25V, AC-COUPLED
V
IN
______________________________________________________________________________________ 11
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Supply Current
Pin Description
The quiescent supply current of these series-mode ref-
erences is a maximum of 35µA and is virtually indepen-
dent of the supply voltage, with only a 0.8µA/V variation
with supply voltage. Unlike series references, shunt-
mode references operate with a series resistor con-
nected to the power supply. The quiescent current of a
shunt-mode reference is thus a function of the input
voltage. Additionally, shunt-mode references have to
be biased at the maximum expected load current, even
if the load current is not present all the time. The load
current is drawn from the input voltage only when
required, so supply current is not wasted and efficiency
is maximiꢀed at all input voltages. This improved effi-
ciency can help reduce power dissipation and extend
battery life.
PIN
1
NAME
IN
FUNCTION
Supply Voltage Input
Reference Voltage Output
Ground
2
OUT
GND
3
Detailed Description
The MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/
MAX6045/MAX6050 precision bandgap references use
a proprietary curvature-correction circuit and laser-
trimmed thin-film resistors, resulting in a low tempera-
ture coefficient of <20ppm/°C and initial accuracy of
better than 0.2%. These devices can sink and source
up to 500µA with <200mV of dropout voltage, making
them attractive for use in low-voltage applications.
When the supply voltage is below the minimum speci-
fied input voltage (as during turn-on), the devices can
draw up to 200µA beyond the nominal supply current.
The input voltage source must be capable of providing
this current to ensure reliable turn-on.
Applications Information
Output/Load Capacitance
Devices in this family do not require an output capaci-
tance for frequency stability. They are stable for capac-
itive loads from 0 to 2.2nF. However, in applications
where the load or the supply can experience step
changes, an output capacitor will reduce the amount of
overshoot (or undershoot) and assist the circuit’s tran-
sient response. Many applications do not need an
external capacitor, and this family can offer a signifi-
cant advantage in these applications when board
space is critical.
Output Voltage Hysteresis
Output voltage hysteresis is the change in the output
voltage at T = +25°C before and after the device is
A
cycled over its entire operating temperature range.
Hysteresis is caused by differential package stress
appearing across the bandgap core transistors. The
typical temperature hysteresis value is 130ppm.
V
S
+2V
S
V+
V-
V
CC
IN
+REF OUTPUT
OUT
MAX681
GND
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
GND
1MΩ
0.1%
V+
OUTPUT
ICL7652
V-
1MΩ
0.1%
10nF
-2V
S
-REF OUTPUT
Figure 1. Positive and Negative References from Single +3V or +5V Supply
12 ______________________________________________________________________________________
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Turn-On Time
These devices typically turn on and settle to within
Pin Configuration
0.1% of their final value; 30µs to 220µs depending on
the device. The turn-on time can increase up to 1.5ms
with the device operating at the minimum dropout volt-
age and the maximum load.
TOP VIEW
MAX6012
MAX6021
MAX6025
MAX6030
MAX6041
MAX6045
MAX6050
IN
1
2
3
GND
Positive and Negative Low-Power
Voltage Reference
Figure 1 shows a typical method for developing a bipo-
lar reference. The circuit uses a MAX681 voltage dou-
bler/inverter charge-pump converter to power an
ICL7652, thus creating a positive as well as a negative
reference voltage.
OUT
SOT23-3
Chip Information
TRANSISTOR COUNT: 70
______________________________________________________________________________________ 13
Precision, Low-Power, Low-Dropout,
SOT23-3 Voltage References
Package Information
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.
14 ____________________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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