MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
General Description
The MAX6161–MAX6168 are precision, low-dropout,
micropower voltage references. These three-terminal
devices operate with an input voltage range from (VOUT
+ 200mV) to 12.6V and are available with output voltage
options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V,
and 5V. They feature a proprietary curvature-correction
circuit and laser-trimmed thin-film resistors that result in a
very low temperature coefficient of 5ppm/°C (max) and an
initial accuracy of ±2mV (max). Specifications apply to the
extended temperature range (-40°C to +85°C).
The MAX6161–MAX6168 typically draw only 100μA of
supply current and can source 5mA (4mA for MAX6161)
or sink 2mA of load current. Unlike conventional shuntmode (two-terminal) references that waste supply
current and require an external resistor, these devices
offer a supply current that is virtually independent
of the supply voltage (8μA/V variation) and do not
require an external resistor. Additionally, the internally
compensated devices do not require an external compensation
capacitor. Eliminating the external compensation capacitor
saves valuable board area in space-critical applications.
A low-dropout voltage and a supply-independent, ultra-low
supply current make these devices ideal for batteryoperated, high-performance, low-voltage systems.
Benefits and Features
●● ±2mV (max) Initial Accuracy
●● 5ppm/°C (max) Temperature Coefficient
●● 5mA Source Current at 0.9mV/mA
●● 2mA Sink Current at 2.5mV/mA
●● Stable with 1μF Capacitive Loads
●● No External Capacitor Required
●● 100μA (typ) Quiescent Supply Current
●● 200mV (max) Dropout at 1mA Load Current
●● Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V,
3V, 4.096V, 4.5V, 5V
Applications
●●
●●
●●
●●
●●
●●
Analog-to-Digital Converters (ADCs)
Portable Battery-Powered Systems
Notebook Computers
PDAs, GPS, DMMs
Cellular Phones
Precision +3V/+5V Systems
Ordering Information, Typical Operating Circuit, and
Selector Guide appear at end of data sheet.
The MAX6161–MAX6168 are available in 8-pin SO
packages.
Pin Configuration
TOP VIEW
N.C. 1
IN 2
N.C.
3
+
MAX6161–
MAX6168
GND 4
SO
19-1650; Rev 4; 12/08
8
N.C.
7
N.C.
6
OUT
5
N.C.
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Absolute Maximum Ratings
Voltages Referenced to GND
IN ........................................................................... -0.3 to +13.5V
OUT.............................................................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration to GND or IN (VIN ≤ 6V)..... Continuous
Output Short-Circuit Duration to GND or IN (VIN > 6V)......... 60s
Continuous Power Dissipation (TA = +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—MAX6161 (VOUT = 1.25V)
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Voltage
SYMBOL
VOUT
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
Line Regulation
ΔVOUT/
ΔVIN
Load Regulation
ΔVOUT/
ΔIOUT
OUT Short-Circuit Current
ISC
Long-Term Stability
ΔVOUT/
time
Output Voltage Hysteresis
(Note 3)
ΔVOUT/
cycle
CONDITIONS
MIN
TYP
MAX
MAX6161A
1.248
1.250
1.252
MAX6161B
1.246
1.250
1.254
MAX6161A
4
10
MAX6161B
6
15
2.5V ≤ VIN ≤ 12.6V
12
150
Sourcing: 0 ≤ IOUT ≤ 4mA
0.5
0.9
Sinking: -2mA ≤ IOUT ≤ 0
1.3
2.5
Short to GND
110
Short to IN
25
1000hr at +25°C
115
ppm/
1000hr
125
ppm
f = 0.1Hz to 10Hz
20
µVp-p
f = 10Hz to 10kHz
15
µVRMS
VIN = +5V ±100mV, f = 120Hz
80
dB
VOUT to 0.1% of final value, COUT = 50pF
50
µs
TA = +25°C
UNITS
V
ppm/°C
µV/V
mV/mA
mA
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
eOUT
VOUT/VIN
tR
INPUT CHARACTERISTICS
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
ΔIIN/ΔVIN
www.maximintegrated.com
Guaranteed by line-regulation test
2.5V ≤ VIN ≤ 12.6V
2.5
12.6
V
125
150
µA
3.2
8.0
µA/V
Maxim Integrated │ 2
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6168 (VOUT = 1.800V)
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Voltage
SYMBOL
VOUT
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
Line Regulation
ΔVOUT/
ΔVIN
Load Regulation
ΔVOUT/
ΔIOUT
OUT Short-Circuit Current
ISC
Long-Term Stability
ΔVOUT/
time
Output Voltage Hysteresis
(Note 3)
ΔVOUT/
cycle
CONDITIONS
MIN
TYP
MAX
MAX6168A
1.798
1.800
1.802
MAX6168B
1.795
1.800
1.805
MAX6168A
2
5
MAX6168B
4
10
2.5V ≤ VIN ≥ 12.6V
42
200
Sourcing: 0 ≤ IOUT ≤ 5mA
0.5
0.9
Sinking: -2mA ≤ IOUT ≤ 0
1.5
4
Short to GND
110
Short to IN
25
1000hr at +25°C
80
ppm/
1000hr
125
ppm
f = 0.1Hz to 10Hz
22
µVp-p
f = 10Hz to 10kHz
25
µVRMS
VIN = +5V ±100mV, f = 120Hz
78
dB
VOUT to 0.1% of final value, COUT = 50pF
100
µs
TA = +25°C
UNITS
V
ppm/°C
µV/V
mV/mA
mA
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
eOUT
ΔVOUT/ΔVIN
tR
INPUT CHARACTERISTICS
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
ΔIIN/ΔVIN
www.maximintegrated.com
Guaranteed by line-regulation test
2.5V ≤ VIN ≤ 12.6V
2.5
12.6
V
100
120
µA
3.4
8.0
µA/V
Maxim Integrated │ 3
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6162 (VOUT = 2.048V)
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Voltage
SYMBOL
VOUT
Output Voltage Temperature
Coefficient (Note 2)
TCVOUT
Line Regulation
ΔVOUT/
ΔVIN
Load Regulation
ΔVOUT/
ΔIOUT
OUT Short-Circuit Current
ISC
Long-Term Stability
ΔVOUT/
time
Output Voltage Hysteresis
(Note 3)
ΔVOUT/
cycle
CONDITIONS
MIN
TYP
MAX
MAX6162A
2.046
2.048
2.050
MAX6162B
2.043
2.048
2.053
MAX6162A
2
5
MAX6162B
4
10
2.5V ≤ VIN ≤ 12.6V
42
250
Sourcing: 0 ≤ IOUT ≤ 5mA
0.5
0.9
Sinking: -2mA ≤ IOUT ≤ 0
1.5
4
Short to GND
110
Short to IN
25
1000hr at +25°C
80
ppm/
1000hr
125
ppm
f = 0.1Hz to 10Hz
22
µVp-p
f = 10Hz to 10kHz
25
µVRMS
VIN = 5V ±100mV, f = 120Hz
78
dB
VOUT to 0.1% of final value, COUT = 50pF
100
µs
TA = +25°C
UNITS
V
ppm/°C
µV/V
mV/mA
mA
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
eOUT
VOUT/VIN
tR
INPUT CHARACTERISTICS
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
ΔIIN/ΔVIN
www.maximintegrated.com
Guaranteed by line-regulation test
2.5V ≤ VIN ≤ 12.6V
2.5
12.6
V
100
120
µA
3.4
8.0
µA/V
Maxim Integrated │ 4
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6166 (VOUT = 2.500V)
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Dropout Voltage (Note 4)
SYMBOL
VOUT
TCVOUT
VIN - VOUT
Line Regulation
ΔVOUT/
ΔVIN
Load Regulation
ΔVOUT/
ΔIOUT
OUT Short-Circuit Current
ISC
Long-Term Stability
ΔVOUT/
time
Output Voltage Hysteresis
(Note 3)
ΔVOUT/
cycle
CONDITIONS
MIN
TYP
MAX
MAX6166A
2.498
2.500
2.502
MAX6166B
2.495
2.500
2.505
MAX6166A
2
5
MAX6166B
4
10
IOUT = 1mA
50
200
mV
VOUT + 0.2V ≤ VIN ≤ 12.6V
60
250
µV/V
Sourcing: 0 ≤ IOUT ≤ 5mA
0.5
0.9
Sinking: -2mA ≤ IOUT ≤ 0
1.6
5
Short to GND
110
Short to IN
25
1000hr at +25°C
80
ppm/
1000hr
125
ppm
f = 0.1Hz to 10Hz
27
µVp-p
f = 10Hz to 10kHz
30
µVRMS
VIN = 5V ±100mV, f = 120Hz
76
dB
VOUT to 0.1% of final value, COUT = 50pF
115
µs
TA = +25°C
UNITS
V
ppm/°C
mV/mA
mA
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
eOUT
VOUT/VIN
tR
INPUT CHARACTERISTICS
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
ΔIIN/ΔVIN
www.maximintegrated.com
Guaranteed by line-regulation test
VOUT + 0.2V ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
100
120
µA
3.2
8.0
µA/V
Maxim Integrated │ 5
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6163 (VOUT = 3.000V)
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Dropout Voltage (Note 4)
SYMBOL
VOUT
TCVOUT
VIN - VOUT
Line Regulation
ΔVOUT/
ΔVIN
Load Regulation
ΔVOUT/
ΔIOUT
OUT Short-Circuit Current
ISC
Long-Term Stability
ΔVOUT/
time
Output Voltage Hysteresis
(Note 3)
ΔVOUT/
cycle
CONDITIONS
MIN
TYP
MAX
MAX6163A
2.998
3.000
3.002
MAX6163B
2.995
3.000
3.005
MAX6163A
2
5
MAX6163B
4
10
IOUT = 1mA
50
200
mV
VOUT + 0.2V ≤ VIN ≤ 12.6V
83
300
µV/V
Sourcing: 0 ≤ IOUT ≤ 5mA
0.5
0.9
Sinking: -2mA ≤ IOUT ≤ 0
1.8
5
Short to GND
110
Short to IN
25
1000hr at +25°C
80
ppm/
1000hr
125
ppm
f = 0.1Hz to 10Hz
35
µVp-p
f = 10Hz to 10kHz
40
µVRMS
VIN = 5V ±100mV, f = 120Hz
76
dB
VOUT to 0.1% of final value, COUT = 50pF
115
µs
TA = +25°C
UNITS
V
ppm/°C
mV/mA
mA
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
eOUT
VOUT/VIN
tR
INPUT CHARACTERISTICS
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
ΔIIN/ΔVIN
www.maximintegrated.com
Guaranteed by line-regulation test
VOUT + 0.2V ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
100
120
µA
3.2
8.0
µA/V
Maxim Integrated │ 6
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6164 (VOUT = 4.096V)
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Dropout Voltage (Note 4)
SYMBOL
VOUT
TCVOUT
VIN - VOUT
Line Regulation
ΔVOUT/
ΔVIN
Load Regulation
ΔVOUT/
ΔIOUT
OUT Short-Circuit Current
ISC
Long-Term Stability
ΔVOUT/
time
Output Voltage Hysteresis
(Note 3)
ΔVOUT/
cycle
CONDITIONS
MIN
TYP
MAX
MAX6164A
4.094
4.096
4.098
MAX6164B
4.091
4.096
4.101
MAX6164A
2
5
MAX6164B
4
10
IOUT = 1mA
50
200
mV
VOUT + 0.2V ≤ VIN ≤ 12.6V
140
300
µV/V
Sourcing: 0 ≤ IOUT ≤ 5mA
0.6
0.9
Sinking: -2mA ≤ IOUT ≤ 0
2.0
7.0
Short to GND
110
Short to IN
25
1000hr at +25°C
80
ppm/
1000hr
125
ppm
f = 0.1Hz to 10Hz
50
µVp-p
f = 10Hz to 10kHz
50
µVRMS
VIN = 5V ±100mV, f = 120Hz
72
dB
VOUT to 0.1% of final value, COUT = 50pF
190
µs
TA = +25°C
UNITS
V
ppm/°C
mV/mA
mA
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
eOUT
VOUT/VIN
tR
INPUT CHARACTERISTICS
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
ΔIIN/ΔVIN
www.maximintegrated.com
Guaranteed by line-regulation test
VOUT + 0.2V ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
100
120
µA
3.2
8.0
µA/V
Maxim Integrated │ 7
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6167 (VOUT = 4.500V)
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Dropout Voltage (Note 4)
SYMBOL
VOUT
TCVOUT
VIN - VOUT
Line Regulation
ΔVOUT/
ΔVIN
Load Regulation
ΔVOUT/
ΔIOUT
OUT Short-Circuit Current
ISC
Long-Term Stability
ΔVOUT/
time
Output Voltage Hysteresis
(Note 3)
ΔVOUT/
cycle
CONDITIONS
MIN
TYP
MAX
MAX6167A
4.498
4.500
4.502
MAX6167B
4.495
4.500
4.505
MAX6167A
2
5
MAX6167B
4
10
IOUT = 1mA
50
200
mV
VOUT + 0.2V ≤ VIN ≤ 12.6V
160
450
µV/V
Sourcing: 0 ≤ IOUT ≤ 5mA
0.6
0.9
Sinking: -2mA ≤ IOUT ≤ 0
2.3
8.0
Short to GND
110
Short to IN
25
1000hr at +25°C
80
ppm/
1000hr
125
ppm
f = 0.1Hz to 10Hz
55
µVp-p
f = 10Hz to 10kHz
55
µVRMS
VIN = 5V ±100mV, f = 120Hz
70
dB
VOUT to 0.1% of final value, COUT = 50pF
230
µs
TA = +25°C
UNITS
V
ppm/°C
mV/mA
mA
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
eOUT
VOUT/VIN
tR
INPUT CHARACTERISTICS
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
ΔIIN/ΔVIN
www.maximintegrated.com
Guaranteed by line-regulation test
VOUT + 0.2V ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
100
120
µA
3.1
8.0
µA/V
Maxim Integrated │ 8
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6165 (VOUT = 5.000V)
(VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Dropout Voltage (Note 4)
SYMBOL
VOUT
TCVOUT
VIN - VOUT
Line Regulation
ΔVOUT/
ΔVIN
Load Regulation
ΔVOUT/
ΔIOUT
OUT Short-Circuit Current
ISC
Long-Term Stability
ΔVOUT/
time
Output Voltage Hysteresis
(Note 3)
ΔVOUT/
cycle
CONDITIONS
MIN
TYP
MAX
MAX6165A
4.998
5.000
5.002
MAX6165B
4.995
5.000
5.005
MAX6165A
2
5
MAX6165B
4
10
IOUT = 1mA
50
200
mV
VOUT + 0.2V ≤ VIN ≤ 12.6V
180
400
µV/V
Sourcing: 0 ≤ IOUT ≤ 5mA
0.6
0.9
Sinking: -2mA ≤ IOUT ≤ 0
2.4
8.0
Short to GND
110
Short to IN
25
1000hr at +25°C
80
ppm/
1000hr
125
ppm
f = 0.1Hz to 10Hz
60
µVp-p
f = 10Hz to 10kHz
60
µVRMS
VIN = 5.5V ±100mV, f = 120Hz
65
dB
VOUT to 0.1% of final value, COUT = 50pF
300
µs
TA = +25°C
UNITS
V
ppm/°C
mV/mA
mA
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
eOUT
VOUT/VIN
tR
INPUT CHARACTERISTICS
Supply Voltage Range
VIN
Quiescent Supply Current
IIN
Change in Supply Current
ΔIIN/ΔVIN
Guaranteed by line-regulation test
VOUT + 0.2V ≤ VIN ≤ 12.6V
VOUT + 0.2
12.6
V
100
120
µA
3.1
8.0
µA/V
Note 1: 100% production tested at TA = +25°C. Guaranteed by design for TA = -40°C to +85°C.
Note 2: Temperature Coefficient is specified by the “box” method; i.e., the maximum ΔVOUT is divided by the maximum ΔT.
Note 3: Thermal Hysteresis is defined as the change in TA = +25°C output voltage before and after temperature cycling of the
device (from TA = TMIN to TMAX). Initial measurement at TA = +25°C is followed by temperature cycling the device to
TA = +85°C then to TA = -40°C, and another measurement at TA = +25°C is compared to the original measurement at
TA = +25°C.
Note 4: Dropout voltage is the minimum input voltage at which VOUT changes ≤ 0.2% from VOUT at VIN = 5.0V
(VIN = 5.5V for MAX6165).
www.maximintegrated.com
Maxim Integrated │ 9
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Typical Operating Characteristics
(VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5)
1.2501
1.2500
1.2499
1.2498
3 TYPICAL PARTS
1.2497
5.0000
4.9995
1.2495
4.9980
10
25
40
55
70
85
40
55
70
85
0
192
384
-90
192
384
576
TIME (hrs)
768
TA = +25°C
200
100
-100
-200
2
4
3
2
TA = -40°C
TA = +25°C
-1
-2
-2
0
LOAD CURRENT (mA)
www.maximintegrated.com
2
4
6
8
10
TA = -40°C
-200
TA = +85°C
-400
-600
TA = +25°C
-800
0
-2
-4
-2
0
2
LOAD CURRENT (mA)
0.30
TA = +85°C
0.25
0.20
13
TA = +25°C
0.15
0.10
TA = -40°C
0.05
TA = -40°C
-4
11
MAX6166
DROPOUT VOLTAGE
vs. LOAD CURRENT
TA = +25°C
-6
9
MAX6165
LOAD REGULATION
6
2
7
INPUT VOLTAGE (V)
8
4
5
INPUT VOLTAGE (V)
TA = +85°C
10
-6
0
-1200
12
12
OUTPUT VOLTAGE CHANGE (mV)
MAX6161/68 toc07
TA = +85°C
200
960
-1000
MAX6161
LOAD REGULATION
4
TA = +85°C
TA = -40°C
0
-300
960
MAX6161/68 toc05
300
768
MAX6161/68 toc09
-80
-4
25
OUTPUT VOLTAGE CHANGE (µV)
-70
0
10
DROPOUT VOLTAGE (V)
-60
1
0
MAX6161/68 toc08
DRIFT (ppm)
-40 -25 -10
MAX6165
LINE REGULATION
-50
OUTPUT VOLTAGE CHANGE (mV)
-30
-40
MAX6161
LINE REGULATION
-40
-3
-20
MAX6165
LONG-TERM DRIFT
-30
5
0
-10
576
TIME (hrs)
-20
0
10
TEMPERATURE (°C)
-10
-100
20
TEMPERATURE (°C)
MAX6161/68 toc04
0
0
40
4.9990
4.9985
-40 -25 -10
50
30
5.0005
1.2496
MAX6161/68 toc03
5.0010
MAX6161
LONG-TERM DRIFT
60
DRIFT (ppm)
1.2502
3 TYPICAL PARTS
5.0015
OUTPUT VOLTAGE CHANGE (µV)
OUTPUT VOLTAGE (V)
1.2503
5.0020
MAX6161/68 toc02
1.2504
OUTPUT VOLTAGE (V)
MAX6161/68 toc01
1.2505
MAX6165
OUTPUT VOLTAGE TEMPERATURE DRIFT
MAX6161/68 toc06
MAX6161
OUTPUT VOLTAGE TEMPERATURE DRIFT
4
6
0
0
1
2
3
4
5
LOAD CURRENT (mA)
Maxim Integrated │ 10
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5)
-20
TA = -40°C
0
1
2
3
4
-50
-50
-70
-60
-80
-70
0.001
0.01
0.1
1
10
100
-80
1000
0.1
0.001
10
1000
MAX6165
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX6161
SUPPLY CURRENT vs. TEMPERATURE
124
TA = -40°C
126
TA = +85°C
120
114
TA = +25°C
108
102
2
4
6
8
10
12
90
14
5
SUPPLY VOLTAGE (V)
138
132
126
VCC = +12.6V
120
114
108
102
-40
-15
10
9
10
11
12
13
35
60
85
132
VCC = +5V
124
VCC = +2.5V
-40
-15
10
35
60
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
MAX6161
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX6165
OUTPUT IMPEDANCE
vs. FREQUENCY
220
200
180
160
140
120
100
80
60
0
140
100
14
180
85
160
140
120
100
80
60
40
20
20
TEMPERATURE (°C)
www.maximintegrated.com
8
40
VCC = +5.2V
96
7
VCC = +12.6V
148
108
MAX6161/68 toc17
144
OUTPUT IMPEDANCE (Ω)
MAX6161/68 toc16
MAX6165
SUPPLY CURRENT vs. TEMPERATURE
6
156
116
TA = -40°C
96
108
164
MAX6161/68 toc18
TA = +25°C
132
132
172
SUPPLY CURRENT (µA)
140
138
180
OUTPUT IMPEDANCE (Ω)
TA = +85°C
148
144
SUPPLY CURRENT (µA)
156
150
MAX6161/68 toc15
MAX6161
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX6161/68 toc14
FREQUENCY (kHz)
116
SUPPLY CURRENT (µA)
-40
FREQUENCY (kHz)
164
90
-30
LOAD CURRENT (mA)
MAX6161/68 toc13
SUPPLY CURRENT (µA)
-40
-90
5
172
150
-20
-60
0.05
100
-10
PSRR (dB)
TA = +25°C
0.10
180
0
-30
0.15
0
MAX6165
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX6161/68 toc11
MAX6161/68 toc10
TA = +85°C
0.20
0
-10
PSRR (dB)
DROPOUT VOLTAGE (V)
0.25
MAX6161
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX6161/68 toc12
MAX6165
DROPOUT VOLTAGE
vs. LOAD CURRENT
0.001
0.1
10
FREQUENCY (kHz)
1000
0
0.001
0.1
10
1000
FREQUENCY (kHz)
Maxim Integrated │ 11
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5)
MAX6165
NOISE
MAX6161/68 toc19
MAX6161/68 toc20
MAX6161
0.1Hz TO 10Hz OUTPUT NOISE
VOUT
10µV/div
VOUT
10µV/div
MAX6161
TURN-ON TRANSIENT
(CL = 50pF)
MAX6165
TURN-ON TRANSIENT
(CL = 50pF)
VIN
5V/div
MAX6161/67 toc22
1s/div
MAX6161/68 toc21
1s/div
VIN
5V/div
VOUT
500mV/div
VOUT
2V/div
10µs/div
40µs/div
MAX6161
LOAD TRANSIENT
(IOUT = ±250µA, VIN = 5.0, CL = 0)
MAX6165
LOAD TRANSIENT
(IOUT = ±250µA, CL = 0, VIN = 5.5V)
MAX6161/68 toc24
MAX6161/68 toc23
+250µA
IOUT
500µA/div
-250µA
VOUT
AC-COUPLED
100mV/div
-250µA
VOUT
AC-COUPLED
50mV/div
400µs/div
www.maximintegrated.com
+250µA
IOUT
500µA/div
400µs/div
Maxim Integrated │ 12
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5)
MAX6161
LOAD TRANSIENT
(IOUT = ±250µA, VIN = 5.0V, CL = 1µF)
MAX6165
LOAD TRANSIENT
(IOUT = ±250µA, CL = 1µF, VIN = 5.5V)
MAX6161/68 toc25
MAX6161/68 toc26
+250µA
IOUT
500µA/div
-250µA
VOUT
AC-COUPLED
10mV/div
+250µA
IOUT
500µA/div
-250µA
VOUT
AC-COUPLED
20mV/div
400µs/div
400µs/div
MAX6161
LOAD TRANSIENT
(VIN = 5.0V, CL = 0, IOUT = ±2mA)
MAX6165
LOAD TRANSIENT
(CL = 0, IOUT = ±2mA, VIN = 5.5V)
MAX6161/68 toc27
MAX6161/68 toc28
+2mA
IOUT
5mA/div
-2mA
VOUT
AC-COUPLED
100mV/div
+2mA
IOUT
5mA/div
-2mA
VOUT
AC-COUPLED
50mV/div
400µs/div
400µs/div
MAX6161
LOAD TRANSIENT
(VIN = 5.0V, CL = 1µF, IOUT = ±2mA)
MAX6165
LOAD TRANSIENT
(CL = 1µF, IOUT = ±2mA, VIN = 5.5V)
MAX6161/68 toc29
+2mA
IOUT
5mA/div
-2mA
VOUT
AC-COUPLED
50mV/div
+2mA
IOUT
5mA/div
-2mA
VOUT
AC-COUPLED
20mV/div
400µs/div
www.maximintegrated.com
MAX6161/68 toc30
400µs/div
Maxim Integrated │ 13
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Typical Operating Characteristics (continued)
(VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 5)
MAX6161
LOAD TRANSIENT
(VIN = 5.0V, CL = 0, IOUT = ±4mA)
MAX6165
LOAD TRANSIENT
(IOUT = ±5mA, CL = 0, VIN = 5.5V)
MAX6161/68 toc31
MAX6161/68 toc32
+4mA
IOUT
5mA/div
-4mA
+5mA
IOUT
5mA/div
-5mA
VOUT
AC-COUPLED
100mV/div
VOUT
AC-COUPLED
200mV/div
400µs/div
400µs/div
MAX6161
LOAD TRANSIENT
(VIN = 5.0V, CL = 1µF, IOUT = ±4mA)
MAX6165
LOAD TRANSIENT
(IOUT = ±5mA, CL = 1µF, VIN = 5.5V)
MAX6161/68 toc33
MAX6161/68 toc34
+4mA
IOUT
5mA/div
-4mA
VOUT
AC-COUPLED
50mV/div
+5mA
IOUT
5mA/div
-5mA
VOUT
AC-COUPLED
50mV/div
400µs/div
400µs/div
MAX6161
LINE TRANSIENT
(CL = 0)
MAX6165
LINE TRANSIENT
(CL = 0)
MAX6161/68 toc35
+0.25V
VIN
500mV/div
-0.25V
VOUT
AC-COUPLED
20mV/div
MAX6161/68 toc36
+0.25V
VIN
500mV/div
-0.25V
VOUT
AC-COUPLED
20mV/div
40µs/div
40µs/div
Note 5: Many of the Typical Operating Characteristics of the MAX6161 family are extremely similar. The extremes of these characteristics
are found in the MAX6161 (1.25V output) and the MAX6165 (5.0V output). The Typical Operating Characteristics of the remainder
of the MAX6161 family typically lie between these two extremes and can be estimated based on their output voltages.
www.maximintegrated.com
Maxim Integrated │ 14
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Pin Description
PIN
NAME
FUNCTION
1, 3, 5, 7, 8
N.C.
2
IN
4
GND
Ground
6
OUT
Reference Output
No Connection. Not internally connected.
Input Voltage
Applications Information
Input Bypassing
For the best line-transient performance, decouple the
input with a 0.1μF ceramic capacitor as shown in the
Typical Operating Circuit. Locate the capacitor as close
to IN as possible. When transient performance is less
important, no capacitor is necessary.
Output/Load Capacitance
Devices in the MAX6161 family do not require an output
capacitor for frequency stability. In applications where the
load or the supply can experience step changes, an output capacitor of at least 0.1μF will reduce the amount of
overshoot (undershoot) and improve the circuit’s transient
response. Many applications do not require an external
capacitor, and the MAX6161 family can offer a significant
advantage in applications when board space is critical.
Output Voltage Hysteresis
Output voltage hysteresis is the change in the input
voltage at TA = +25°C before and after the device is 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 125ppm.
Turn-On Time
These devices typically turn on and settle to within 0.1%
of their final value in 50μs to 300μs, depending on the
output voltage (see electrical table of part used).
The turn-on time can increase up to 1.5ms with the
device operating at the minimum dropout voltage and the
maximum load.
Typical Operating Circuit
Supply Current
The quiescent supply current of the series-mode MAX6161
family is typically 100μA and is virtually independent of the
supply voltage, with only an 8μA/V (max) variation with
supply voltage. Unlike series references, shunt-mode
references operate with a series resistor connected to
the power supply. The quiescent current of a shuntmode 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 at the time. In the MAX6161 family,
the load current is drawn from the input voltage only when
required, so supply current is not wasted and efficiency is
maximized at all input voltages. This improved efficiency
reduces power dissipation and extends battery life.
When the supply voltage is below the minimum specified
input voltage (as during turn-on), the devices can draw up
to 400μA beyond the nominal supply current. The input
voltage source must be capable of providing this current
to ensure reliable turn-on.
www.maximintegrated.com
+SUPPLY INPUT (SEE SELECTOR GUIDE)
IN
OUT
0.1µF*
MAX6161–
MAX6168
REFERENCE
OUT
1µF*
GND
*CAPACITORS ARE OPTIONAL.
Chip Information
TRANSISTOR COUNT: 117
PROCESS: BiCMOS
Maxim Integrated │ 15
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Selector Guide
PART
OUTPUT VOLTAGE
(V)
INITIAL ACCURACY
(mV)
TEMPERATURE
COEFFICIENT
(ppm/°C)
MAX6161A
1.250
±2
10
MAX6161B
1.250
±4
15
MAX6168A
1.800
±2
5
MAX6168B
1.800
±5
10
MAX6162A
2.048
±2
5
MAX6162B
2.048
±5
10
MAX6166A
2.500
±2
5
MAX6166B
2.500
±5
10
MAX6163A
3.000
±2
5
MAX6163B
3.000
±5
10
MAX6164A
4.096
±2
5
MAX6164B
4.096
±5
10
MAX6167A
4.500
±2
5
MAX6167B
4.500
±5
10
MAX6165A
5.000
±2
5
MAX6165B
5.000
±5
10
Package Information
Ordering Information
PART*
TEMP RANGE
PINOUTPUT
PACKAGE VOLTAGE (V)
MAX6161_ESA+ -40°C to +85°C
8 SO
1.250
MAX6162_ESA+ -40°C to +85°C
8 SO
2.048
MAX6163_ESA+ -40°C to +85°C
8 SO
3.000
MAX6164_ESA+ -40°C to +85°C
8 SO
4.096
MAX6165_ESA+ -40°C to +85°C
8 SO
5.000
MAX6166_ESA+ -40°C to +85°C
8 SO
2.500
MAX6167_ESA+ -40°C to +85°C
8 SO
4.500
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that
a “+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but the
drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
8 SO
PACKAGE
CODE
S8+2
OUTLINE
NO.
21-0041
LAND
PATTERN NO.
90-0096
MAX6168_ESA+ -40°C to +85°C
8 SO
1.800
+Denotes a lead(Pb)-free package/RoHS-compliant package.
*Insert the code for the desired initial accuracy and temperature
coefficient (from the Selector Guide) in the blank to complete
the part number.
Note: For leaded version, contact factory.
www.maximintegrated.com
Maxim Integrated │ 16
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Revision History
REVISION
NUMBER
REVISION
DATE
4
12/08
DESCRIPTION
Updated part numbers in Ordering Information table
PAGES
CHANGED
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2008 Maxim Integrated Products, Inc. │ 17
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