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19-1408; Rev 2; 10/01
Precision, Micropower,
Low-Dropout Voltage References
General Description
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.
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.
o
±2mV (max) Initial Accuracy
o
5ppm/°C (max) Temperature Coefficient
o
35µA (max) Supply Current
o
100mV Dropout at 500µA Load Current
o
0.12µV/µA Load Regulation
o
8µV/V Line Regulation
Features
MAX6190–MAX6195/MAX6198
Applications
Hand-Held Instruments
Analog-to-Digital and Digital-to-Analog Converters
Industrial Process Control
Precision 3V/5V Systems
Hard-Disk Drives
Selector Guide
PART
MAX6190A
MAX6190B
MAX6190C
MAX6191A
MAX6191B
MAX6191C
MAX6192A
MAX6192B
MAX6192C
MAX6193A
MAX6193B
MAX6193C
MAX6198A
MAX6198B
MAX6198C
MAX6194A
MAX6194B
MAX6194C
MAX6195A
MAX6195B
MAX6195C
OUTPUT
VOLTAGE
(V)
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
INITIAL
ACCURACY
(mV)
±2
±4
±6
±2
±5
±10
±2
±5
±10
±2
±5
±10
±2
±5
±10
±2
±5
±10
±2
±5
±10
TEMPERATURE
COEFFICIENT
(ppm/°C)
<5
<10
<25
<5
<10
<25
<5
<10
<25
<5
<10
<25
<5
<10
<25
<5
<10
<25
<5
<10
<25
Ordering Information
PART
MAX6190AESA
MAX6190BESA
MAX6190CESA
MAX6191AESA
MAX6191BESA
MAX6191CESA
MAX6192AESA
MAX6192BESA
MAX6192CESA
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
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
Ordering Information continued at end of data sheet.
Pin Configuration
TOP VIEW
N.C.
1
8
N.C.
N.C.
OUT
N.C.
IN 2
N.C.
3
MAX6190–
MAX6195
MAX6198
7
6
5
GND 4
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
MAX6190–MAX6195/MAX6198
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
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
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—MAX6190
(V
IN
= 5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
OUTPUT
MAX6190A
Output Voltage
V
OUT
T
A
= +25°C
MAX6190A
Output-Voltage Temperature
Coefficient (Note 1)
Line Regulation
Load Regulation
Short-Circuit Current
Temperature Hysteresis
(Note 2)
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
V
µA
µA/V
e
OUT
V
OUT
/V
IN
t
R
C
OUT
0.1Hz to 10Hz
10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To 0.1%, C
OUT
= 50pF
(Note 3)
0
25
65
86
30
2.2
µV
P-P
µV
RMS
dB
µs
nF
TCV
OUT
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
I
SC
∆V
OUT
/
cycle
∆V
OUT
/
time
1000hrs at +25°C
MAX6190B
MAX6190C
2.5V
≤
V
IN
≤
12.6V
Sourcing: 0
≤
I
OUT
≤
500µA
Sinking: -500µA
≤
I
OUT
≤
0
Short to GND
Short to IN
MAX6190B
MAX6190C
1.248
1.246
1.244
1.250
1.250
1.250
2
4
8
8
0.12
0.15
4
4
75
50
1.252
1.254
1.256
5
10
25
80
0.5
0.6
µV/V
µV/µA
mA
ppm
ppm/
1000hrs
ppm/°C
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Precision, Micropower,
Low-Dropout Voltage References
ELECTRICAL CHARACTERISTICS—MAX6191
(V
IN
= 5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
OUTPUT
MAX6191A
Output Voltage
V
OUT
T
A
= +25°C
MAX6191A
Output-Voltage Temperature
Coefficient (Note 1)
Line Regulation
Load Regulation
Short-Circuit Current
Temperature Hysteresis
(Note 2)
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
V
µA
µA/V
e
OUT
V
OUT
/V
IN
t
R
C
OUT
0.1Hz to 10Hz
10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To 0.1%, C
OUT
= 50pF
(Note 3)
0
40
105
84
30
2.2
µV
P-P
µV
RMS
dB
µs
nF
TCV
OUT
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
I
SC
∆V
OUT
/
cycle
∆V
OUT
/
time
1000hrs at +25°C
MAX6191B
MAX6191C
2.5V
≤
V
IN
≤
12.6V
Sourcing: 0
≤
I
OUT
≤
500µA
Sinking: -500µA
≤
I
OUT
≤
0
Short to GND
Short to IN
MAX6191B
MAX6191C
2.046
2.043
2.038
2.048
2.048
2.048
2
4
8
10
0.12
0.18
4
4
75
50
2.050
2.053
2.058
5
10
25
100
0.55
0.70
µV/V
µV/µA
mA
ppm
ppm/
1000hrs
ppm/°C
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX6190–MAX6195/MAX6198
_______________________________________________________________________________________
3
Precision, Micropower,
Low-Dropout Voltage References
MAX6190–MAX6195/MAX6198
ELECTRICAL CHARACTERISTICS—MAX6192
(V
IN
= 5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
OUTPUT
MAX6192A
Output Voltage
V
OUT
T
A
= +25°C
MAX6192A
Output-Voltage Temperature
Coefficient (Note 1)
Line Regulation
Load Regulation
Dropout Voltage (Note 4)
Short-Circuit Current
Temperature Hysteresis
(Note 2)
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
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
V
OUT
+ 0.2
27
0.8
12.6
35
2
V
µA
µA/V
e
OUT
V
OUT
/V
IN
t
R
C
OUT
0.1Hz to 10Hz
10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
To 0.1%, C
OUT
= 50pF
(Note 3)
0
60
125
82
85
2.2
µV
P-P
µV
RMS
dB
µs
nF
TCV
OUT
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
MAX6192B
MAX6192C
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
Sourcing: 0
≤
I
OUT
≤
500µA
Sinking: -500µA
≤
I
OUT
≤
0
Short to GND
Short to IN
MAX6192B
MAX6192C
2.498
2.495
2.490
2.500
2.500
2.500
2
4
8
15
0.14
0.18
100
4
4
75
1000hrs at +25°C
50
2.502
2.505
2.510
5
10
25
140
0.60
0.80
200
µV/V
µV/µA
mV
mA
ppm
ppm/
1000hrs
ppm/°C
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN -
V
OUT
∆V
OUT
≤
0.2%, I
OUT
= 500µA
I
SC
∆V
OUT
/
cycle
∆V
OUT
/
time
4
_______________________________________________________________________________________
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