MAX6193AESA [MAXIM]
Precision, Micropower, Low-Dropout Voltage References; 高精度，微功耗，低压差电压基准
| 型号： | MAX6193AESA |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Precision, Micropower, Low-Dropout Voltage References |
| 文件： | 总14页 (文件大小：293K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1408; Rev 2; 10/01
Precision, Micropower,
Low-Dropout Voltage References
General Description
Features
The MAX6190–MAX6195/MAX6198 precision, micro-
power, low-dropout voltage references offer high initial
accuracy and very low temperature coefficient through
a proprietary curvature-correction circuit and laser-
trimmed precision thin-film resistors.
ꢀ
2mV (max) Initial Accuracy
ꢀ 5ppm/°C (max) Temperature Coefficient
ꢀ 35µA (max) Supply Current
ꢀ 100mV Dropout at 500µA Load Current
ꢀ 0.12µV/µA Load Regulation
These series-mode bandgap references draw a maxi-
mum of only 35µA quiescent supply current, making
them ideal for battery-powered instruments. They offer
a supply current that is virtually immune to input volt-
age variations. Load-regulation specifications are
guaranteed for source and sink currents up to 500µA.
These devices are internally compensated, making
them ideal for applications that require fast settling,
and are stable with capacitive loads up to 2.2nF.
ꢀ 8µV/V Line Regulation
Applications
Hand-Held Instruments
Analog-to-Digital and Digital-to-Analog Converters
Industrial Process Control
Precision 3V/5V Systems
Hard-Disk Drives
Selector Guide
Ordering Information
OUTPUT
VOLTAGE ACCURACY
INITIAL
TEMPERATURE
COEFFICIENT
(ppm/°C)
PART
PART
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
PIN-PACKAGE
8 SO
(V)
(mV)
MAX6190AESA
MAX6190BESA
MAX6190CESA
MAX6191AESA
MAX6191BESA
MAX6191CESA
MAX6192AESA
MAX6192BESA
MAX6192CESA
MAX6190A
MAX6190B
MAX6190C
MAX6191A
MAX6191B
MAX6191C
MAX6192A
MAX6192B
MAX6192C
MAX6193A
MAX6193B
MAX6193C
MAX6198A
MAX6198B
MAX6198C
MAX6194A
MAX6194B
MAX6194C
MAX6195A
MAX6195B
MAX6195C
1.250
1.250
1.250
2.048
2.048
2.048
2.500
2.500
2.500
3.000
3.000
3.000
4.096
4.096
4.096
4.500
4.500
4.500
5.000
5.000
5.000
2
<5
<10
<25
<5
8 SO
4
8 SO
6
8 SO
2
8 SO
5
<10
<25
<5
8 SO
10
2
8 SO
8 SO
5
<10
<25
<5
8 SO
10
2
Ordering Information continued at end of data sheet.
5
<10
<25
<5
10
2
Pin Configuration
5
<10
<25
<5
10
2
TOP VIEW
N.C.
IN
1
2
3
4
8
7
6
5
N.C.
N.C.
OUT
N.C.
5
<10
<25
<5
10
2
MAX6190–
MAX6195
MAX6198
N.C.
GND
5
<10
<25
10
Typical Operating Circuit appears at end of data sheet.
SO
________________________________________________________________ Maxim Integrated Products
1
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.
Precision, Micropower,
Low-Dropout Voltage References
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
Continuous Power Dissipation (T = +70°C)
A
IN......................................................................-0.3V to +13.5V
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
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—MAX6190
(V = 5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
OUTPUT
MAX6190A
1.248
1.246
1.244
1.250
1.250
1.250
2
1.252
1.254
1.256
5
Output Voltage
V
OUT
T = +25°C
A
MAX6190B
MAX6190C
MAX6190A
MAX6190B
MAX6190C
Output-Voltage Temperature
Coefficient (Note 1)
TCV
OUT
ppm/°C
4
10
8
25
∆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
0.5
0.6
∆V
OUT
∆I
OUT
OUT
Load Regulation
Short-Circuit Current
Sinking: -500µA ≤ I
Short to GND
Short to IN
≤ 0
OUT
I
SC
4
Temperature Hysteresis
(Note 2)
∆V
/
/
OUT
cycle
75
50
ppm
∆V
OUT
time
ppm/
1000hrs
Long-Term Stability
DYNAMIC
1000hrs at +25°C
0.1Hꢀ to 10Hꢀ
10Hꢀ to 10kHꢀ
25
65
86
30
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Ripple Rejection
V
/V
V
IN
= 5V 100mV, f = 120Hꢀ
dB
µs
nF
OUT IN
Turn-On Settling Time
t
R
To 0.1%, C = 50pF
OUT
Capacitive-Load Stability Range
INPUT
C
(Note 3)
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
Guaranteed by line-regulation test
2.5V ≤ V ≤ 12.6V
2.5
12.6
35
2
V
IN
I
IN
27
µA
I
/V
IN IN
0.8
µA/V
IN
2
_______________________________________________________________________________________
Precision, Micropower,
Low-Dropout Voltage References
ELECTRICAL CHARACTERISTICS—MAX6191
(V = 5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
OUTPUT
MAX6191A
2.046
2.043
2.038
2.048
2.048
2.048
2
2.050
2.053
2.058
5
Output Voltage
V
OUT
T = +25°C
A
MAX6191B
MAX6191C
MAX6191A
MAX6191B
MAX6191C
Output-Voltage Temperature
Coefficient (Note 1)
TCV
OUT
ppm/°C
4
10
8
25
∆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
∆V
OUT
∆I
OUT
OUT
Load Regulation
Short-Circuit Current
Sinking: -500µA ≤ I
Short to GND
Short to IN
≤ 0
OUT
I
SC
4
Temperature Hysteresis
(Note 2)
∆V
/
/
OUT
cycle
75
50
ppm
∆V
OUT
time
ppm/
1000hrs
Long-Term Stability
DYNAMIC
1000hrs at +25°C
0.1Hꢀ to 10Hꢀ
10Hꢀ to 10kHꢀ
40
105
84
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Ripple Rejection
V
/V
V
IN
= 5V 100mV, f = 120Hꢀ
dB
µs
nF
OUT IN
Turn-On Settling Time
t
R
To 0.1%, C = 50pF
OUT
30
Capacitive-Load Stability Range
INPUT
C
(Note 3)
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
Guaranteed by line-regulation test
2.5V ≤ V ≤ 12.6V
2.5
12.6
35
2
V
IN
I
IN
27
µA
I
/V
IN IN
0.8
µA/V
IN
_______________________________________________________________________________________
3
Precision, Micropower,
Low-Dropout Voltage References
ELECTRICAL CHARACTERISTICS—MAX6192
(V = 5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6192A
2.498
2.495
2.490
2.500
2.500
2.500
2
2.502
2.505
2.510
5
Output Voltage
V
OUT
T
A
= +25°C
V
MAX6192B
MAX6192C
MAX6192A
MAX6192B
MAX6192C
Output-Voltage Temperature
Coefficient (Note 1)
TCV
OUT
ppm/°C
µV/V
4
10
8
25
∆V
/
/
OUT
Line Regulation
(V
+ 0.2V) ≤ V ≤ 12.6V
15
140
OUT
IN
∆V
IN
Sourcing: 0 ≤ I
Sinking: -500µA ≤ I
≤ 500µA
0.14
0.18
100
4
0.60
0.80
200
∆V
OUT
∆I
OUT
OUT
Load Regulation
µV/µA
mV
≤ 0
OUT
Dropout Voltage (Note 4)
Short-Circuit Current
V
V
∆V
≤ 0.2%, I
= 500µA
OUT
IN - OUT
OUT
Short to GND
Short to IN
I
mA
SC
4
Temperature Hysteresis
(Note 2)
∆V
/
/
OUT
cycle
75
50
ppm
∆V
OUT
time
ppm/
1000hrs
Long-Term Stability
DYNAMIC
1000hrs at +25°C
0.1Hꢀ to 10Hꢀ
10Hꢀ to 10kHꢀ
60
125
82
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Ripple Rejection
V
/V
V
IN
= 5V 100mV, f = 120Hꢀ
dB
µs
nF
OUT IN
Turn-On Settling Time
t
R
To 0.1%, C = 50pF
OUT
85
Capacitive-Load Stability Range
INPUT
C
(Note 3)
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
V
OUT
+ 0.2
12.6
35
2
V
IN
I
IN
27
µA
I
/V
IN IN
0.8
µA/V
OUT
IN
4
_______________________________________________________________________________________
Precision, Micropower,
Low-Dropout Voltage References
ELECTRICAL CHARACTERISTICS—MAX6193
(V = 5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6193A
2.998
2.995
2.990
3.000
3.000
3.000
2
3.002
3.005
3.010
5
Output Voltage
V
OUT
T
A
= +25°C
V
MAX6193B
MAX6193C
MAX6193A
MAX6193B
MAX6193C
Output-Voltage Temperature
Coefficient (Note 1)
TCV
OUT
ppm/°C
µV/V
4
10
8
25
∆V
∆V
/
/
OUT
Line Regulation
2.5V ≤ V ≤ 12.6V
20
150
IN
∆V
IN
0.14
0.18
100
4
0.60
0.80
200
OUT
Load Regulation
2.5V ≤ V ≤ 12.6V
µV/V
mV
IN
∆V
IN
Dropout Voltage (Note 4)
Short-Circuit Current
V
IN
- V
I = 500µA
OUT
OUT
Short to GND
Short to IN
I
mA
SC
4
Temperature Hysteresis
(Note 2)
∆V
/
/
OUT
cycle
75
50
ppm
∆V
OUT
time
ppm/
1000hrs
Long-Term Stability
DYNAMIC
1000hrs at +25°C
0.1Hꢀ to 10Hꢀ
10Hꢀ to 10kHꢀ
75
150
80
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Ripple Rejection
V
/V
V
IN
= 5V 100mV, f = 120Hꢀ
dB
µs
nF
OUT IN
Turn-On Settling Time
t
R
To 0.1%, C = 50pF
OUT
100
Capacitive-Load Stability Range
INPUT
C
(Note 3)
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
V
OUT
+ 0.2
12.6
35
2
V
IN
I
IN
27
µA
I
/V
IN IN
0.8
µA/V
IN
OUT
_______________________________________________________________________________________
5
Precision, Micropower,
Low-Dropout Voltage References
ELECTRICAL CHARACTERISTICS—MAX6194
(V = 5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT
MAX6194A
4.498
4.495
4.490
4.500
4.500
4.500
2
4.502
4.505
4.510
5
Output Voltage
V
T
= +25°C
MAX6194B
MAX6194C
V
A
OUT
MAX6194A
MAX6194B
MAX6194C
Output-Voltage Temperature
Coefficient (Note 1)
TCV
OUT
ppm/°C
µV/V
4
10
8
25
∆V
∆V
/
/
OUT
IN
Line Regulation
(V
+ 0.2V) ≤ V ≤ 12.6V
25
160
OUT
IN
Sourcing: 0 ≤ I
Sinking: -500µA ≤ I
∆V
Short to GND
Short to IN
≤ 500µA
0.16
0.22
100
4
0.80
1.00
200
∆V
∆I
OUT
OUT
OUT
Load Regulation
µV/µA
mV
≤ 0
OUT
Dropout Voltage (Note 4)
Short-Circuit Current
V
V
≤ 0.2%, I
= 500µA
OUT
IN - OUT
OUT
I
mA
SC
4
Temperature Hysteresis
(Note 2)
∆V
/
/
OUT
cycle
75
50
ppm
∆V
OUT
time
ppm/
1000hrs
Long-Term Stability
DYNAMIC
1000hrs at +25°C
0.1Hꢀ to 10Hꢀ
10Hꢀ to 10kHꢀ
110
215
76
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Ripple Rejection
V
/V
V
IN
= 5V 100mV, f = 120Hꢀ
dB
µs
nF
OUT IN
Turn-On Settling Time
t
R
To 0.1%, C = 50pF
OUT
180
Capacitive-Load Stability Range
OUTPUT
C
(Note 3)
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
V
OUT
+ 0.2
12.6
35
2
V
IN
I
IN
27
µA
I
/V
IN IN
0.8
µA/V
OUT
IN
6
_______________________________________________________________________________________
Precision, Micropower,
Low-Dropout Voltage References
ELECTRICAL CHARACTERISTICS—MAX6195
(V = 5.5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
OUT
A
MIN
PARAMETER
INPUT
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX6195A
4.998
4.995
4.990
5.000
5.000
5.000
2
5.002
5.005
5.010
5
Output Voltage
V
OUT
T
A
= +25°C
V
MAX6195B
MAX6195C
MAX6195A
MAX6195B
MAX6195C
Output-Voltage Temperature
Coefficient (Note 1)
TCV
OUT
ppm/°C
µV/V
4
10
8
25
∆V
/
/
OUT
Line Regulation
(V
+ 0.2V) ≤ V ≤ 12.6V
25
160
OUT
IN
∆V
IN
Sourcing: 0 ≤ I
Sinking: -500µA ≤ I
≤ 500µA
0.17
0.24
100
4
0.85
1.10
200
∆V
OUT
∆I
OUT
OUT
Load Regulation
µV/µA
mA
≤ 0
OUT
Dropout Voltage (Note 4)
Short-Circuit Current
V
V
∆V
≤ 0.2%, I
= 500µA
OUT
IN - OUT
OUT
Short to GND
Short to IN
I
mA
SC
4
Temperature Hysteresis
(Note 2)
∆V
/
/
OUT
cycle
75
50
ppm
∆V
OUT
time
ppm/
1000hrs
Long-Term Stability
DYNAMIC
1000hrs at +25°C
0.1Hꢀ to 10Hꢀ
10Hꢀ to 10kHꢀ
120
240
72
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Ripple Rejection
V
/V
V
IN
= 5.5V 100mV, f = 120Hꢀ
dB
µs
nF
OUT IN
Turn-On Settling Time
Capacitive-Load Stability Range
OUTPUT
t
R
To 0.1%, C = 50pF
OUT
220
C
(Note 3)
0
2.2
OUT
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
V
OUT
+ 0.2
12.6
35
2
V
IN
I
IN
27
µA
I
/V
IN IN
0.8
µA/V
OUT
IN
_______________________________________________________________________________________
7
Precision, Micropower,
Low-Dropout Voltage References
ELECTRICAL CHARACTERISTICS—MAX6198
(V = 5V, I
IN
= 0, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6198A
4.094
4.091
4.086
4.096
4.096
4.096
2
4.098
4.101
4.106
5
Output Voltage
V
OUT
T
A
= +25°C
V
MAX6198B
MAX6198C
MAX6198A
MAX6198B
MAX6198C
Output-Voltage Temperature
Coefficient (Note 1)
TCV
OUT
ppm/°C
µV/V
4
10
8
25
∆V
/
/
OUT
Line Regulation
(V
+ 0.2V) ≤ V ≤ 12.6V
25
160
OUT
IN
∆V
IN
Sourcing: 0 ≤ I
Sinking: -500µA ≤ I
≤ 500µA
0.15
0.20
100
4
0.70
0.90
200
∆V
OUT
∆I
OUT
OUT
Load Regulation
µV/µA
mV
≤ 0
OUT
Dropout Voltage (Note 4)
Short-Circuit Current
V
V
∆V
≤ 0.2%, I
= 500µA
OUT
IN - OUT
OUT
Short to GND
Short to IN
I
mA
SC
4
Temperature Hysteresis
(Note 2)
∆V
/
/
OUT
cycle
75
50
ppm
∆V
OUT
time
ppm/
1000hrs
Long-Term Stability
1000hrs at +25°C
DYNAMIC
0.1Hꢀ to 10Hꢀ
10Hꢀ to 10kHꢀ
100
200
77
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Ripple Rejection
V
/V
V
IN
= 5V 100mV, f = 120Hꢀ
dB
µs
nF
OUT IN
Turn-On Settling Time
t
R
To 0.1%, C = 50pF
OUT
160
Capacitive-Load Stability Range
C
(Note 3)
0
2.2
OUT
INPUT
Supply Voltage Range
V
Guaranteed by line-regulation test
(V + 0.2V) ≤ V ≤ 12.6V
V
OUT
+ 0.2
12.6
35
2
V
IN
Quiescent Supply Current
Change in Supply Current
I
IN
27
µA
I
/V
IN IN
0.8
µA/V
OUT
IN
Note 1: Temperature Coefficient is measured by the “box” method; i.e., the maximum ∆V
Note 2: Thermal Hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T
Note 3: Not production tested. Guaranteed by design.
is divided by the maximum ∆t.
OUT
to T
.
MIN
MAX
Note 4: Dropout voltage is the minimum input voltage at which V
changes ≤ 0.2% from V at V = 5.0V (V = 5.5V for MAX6195).
OUT IN IN
OUT
8
_______________________________________________________________________________________
Precision, Micropower,
Low-Dropout Voltage References
Typical Operating Characteristics
(V = 5V for MAX6190/1/2/3/4/8, V = 5.5V for MAX6195; I
= 0; T = +25°C; unless otherwise noted.) (Note 5)
A
IN
IN
OUT
MAX6190
MAX6195
OUTPUT VOLTAGE
TEMPERATURE DRIFT
MAX6195
LONG-TERM DRIFT
OUTPUT VOLTAGE
TEMPERATURE DRIFT
1.2508
1.2506
1.2504
1.2502
1.2500
1.2498
1.2496
1.2494
5.0040
5.0035
5.0030
5.0025
5.0020
5.0015
5.0010
5.0005
5.0000
4.9995
5.003
5.002
THREE
TYPICAL PARTS
THREE
TYPICAL PARTS
5.001
5.000
4.999
4.998
4.997
4.996
4.995
4.994
4.993
THREE
TYPICAL PARTS
-40 -20
0
20
40
60
80 100
-40 -20
0
20
40
60
80 100
400
0
100 200 300
500 600 700 800 900 1000
TEMPERATURE DRIFT (°C)
TEMPERATURE DRIFT (°C)
TIME (HOURS)
MAX6192/MAX6193
DROPOUT VOLTAGE
vs. SOURCE CURRENT
MAX6190
LINE REGULATION
MAX6195
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
= +85°C
A
T
= -40°C
T
= +85°C
A
A
T
= -40°C
A
T
= -40°C
A
T
= +85°C
A
T
= +25°C
A
T
= +25°C
A
T
= +25°C
A
-100
-200
2
4
6
8
10
12
14
5
7
9
11
13
0
200
400
600
800
1000
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
SOURCE CURRENT (µA)
MAX6194/MAX6195/MAX6198
DROPOUT VOLTAGE
MAX6190
LOAD REGULATION
MAX6195
LOAD REGULATION
vs. SOURCE CURRENT
0.4
0.2
0
0.4
0.2
0
0.30
0.25
0.20
0.15
0.10
0.05
0
T
= -40°C
A
T
= +85°C
A
T
= -40°C
A
T
= -40°C
A
T
= +85°C
A
T
= +25°C
T
= +25°C
A
A
T
= +25°C
A
-0.2
-0.4
-0.2
-0.4
T
= +85°C
A
-500 -375 -250 -125
0
125 250 375 500
-500 -375 -250 -125
0
125 250 375 500
0
200
400
600
800
1000
LOAD CURRENT (µA)
LOAD CURRENT (µA)
SOURCE CURRENT (µA)
_______________________________________________________________________________________
9
Precision, Micropower,
Low-Dropout Voltage References
Typical Operating Characteristics (continued)
(V = 5V for MAX6190/1/2/3/4/8, V = 5.5V for MAX6195; I = 0; T = +25°C; unless otherwise noted.) (Note 5)
OUT A
IN
IN
MAX6190
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX6195
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)
MAX6195
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX6190
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
= 5.5V
IN
V
= 2.5V (MAX6190/MAX6191 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)
MAX6190
0.1Hz TO 10Hz OUTPUT NOISE
MAX6195
0.1Hz TO 10Hz OUTPUT NOISE
MAX6190
TURN-ON TRANSIENT
V
IN
1V/div
V
OUT
10µV/div
V
OUT
20µV/div
V
OUT
1V/div
1s/div
1s/div
10µs/div
10 ______________________________________________________________________________________
Precision, Micropower,
Low-Dropout Voltage References
Typical Operating Characteristics (continued)
(V = 5V for MAX6190/1/2/3/4/8, V = 5.5V for MAX6195; I
= 0; T = +25°C; unless otherwise noted.) (Note 5)
A
IN
IN
OUT
MAX6195
TURN-ON TRANSIENT
MAX6195
LOAD-TRANSIENT RESPONSE
MAX6190
LOAD-TRANSIENT RESPONSE
MAX6190 toc19
+25µA
-25µA
I
OUT
50µA/div
V
IN
2V/div
I
OUT
40µA/div
V
OUT
50mV/div
V
OUT
2V/div
V
OUT
20mV/div
10µs/div
20µs/div
10µs/div
V
= 5.5V, I
=
OUT
25µA, AC-COUPLED
I
=
25µA, AC-COUPLED
IN
OUT
MAX6190
LINE-TRANSIENT RESPONSE
MAX6195
LOAD-TRANSIENT RESPONSE
MAX6190
LOAD-TRANSIENT RESPONSE
MAX6190 toc22
+500µA
-500µA
I
OUT
00µA/div
V
I
IN
OUT
1mA/div
200mV/div
V
OUT
00mV/div
V
OUT
0.2V/div
V
OUT
100mV/div
2.5µs/div
V = 5V 0.25V, AC-COUPLED
IN
20µs/div
500µA, AC-COUPLED
10µs/div
500µA, AC-COUPLED
V
= 5.5V, I
=
OUT
IN
I
=
OUT
MAX6195
LINE-TRANSIENT RESPONSE
V
IN
200mV/div
V
Note 5: Many of the Typical Operating Characteristics of the MAX6190 family are
extremely similar. The extremes of these characteristics are found in the
MAX6190 (1.2V output) and the MAX6195 (5.0V output) devices. The Typical
Operating Characteristics of the remainder of the MAX6190 family typically lie
between these two extremes and can be estimated based on their output
voltage.
OUT
100mV/div
2µs/div
= 5.5V 0.25V, AC-COUPLED
V
IN
______________________________________________________________________________________ 11
Precision, Micropower,
Low-Dropout Voltage References
voltage. Additionally, shunt-mode references have to
Pin Description
be biased at the maximum expected load current, even
if the load current is not present all the time. In the
series-mode MAX6190 family, 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 efficiency can help
reduce power dissipation and extend battery life.
PIN
NAME
FUNCTION
1, 3, 5, 7,
8
No Connection. Not internally
connected.
N.C.
2
4
6
IN
Supply Voltage Input
Ground
GND
OUT
Reference Voltage Output
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.
Detailed Description
The MAX6190–MAX6195/MAX6198 precision bandgap
references use a proprietary curvature-correction circuit
and laser-trimmed thin-film resistors, resulting in a low
temperature coefficient of <5ppm/°C and initial accura-
cy of better than 0.1%. These devices can sink and
source up to 500µA with <200mV of dropout voltage,
making them attractive for use in low-voltage applica-
tions.
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 75ppm.
Applications Information
Turn-On Time
These devices typically turn on and settle to within
0.1% of their final value in 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.
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.
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.
Supply Current
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 connect-
ed to the power supply. The quiescent current of a
shunt-mode reference is thus a function of the input
12 ______________________________________________________________________________________
Precision, Micropower,
Low-Dropout Voltage References
V
S
2V
S
V+
V-
V
CC
IN
+REF OUTPUT
OUT
MAX681
GND
1MΩ, 0.1%
MAX6190–
MAX6195
MAX6198
V+
OUTPUT
GND
ICL7652
V-
1MΩ, 0.1%
10nF
-REF OUTPUT
-2V
S
Figure 1. Positive and Negative References from Single 3V or 5V Supply
Ordering Information (continued)
Typical Operating Circuit
PART
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
PIN-PACKAGE
8 SO
MAX6193AESA
MAX6193BESA
MAX6193CESA
MAX6194AESA
MAX6194BESA
MAX6194CESA
MAX6195AESA
MAX6195BESA
MAX6195CESA
MAX6198AESA
MAX6198BESA
MAX6198CESA
+SUPPLY INPUT (SEE SELECTOR GUIDE ON FIRST PAGE)
8 SO
8 SO
IN
8 SO
OUT
REFERENCE
OUT
8 SO
8 SO
MAX6190–
MAX6195
MAX6198
*
8 SO
8 SO
8 SO
2.2nF MAX
*
GND
8 SO
8 SO
8 SO
*
CAPACITORS ARE OPTIONAL
Chip Information
TRANSISTOR COUNT: 70
______________________________________________________________________________________ 13
Precision, Micropower,
Low-Dropout 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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