micropower voltage references. These three-terminal
devices operate with an input voltage range from (V
OUT
+ 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 shunt-
mode (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 battery-
operated, high-performance, low-voltage systems.
The MAX6161–MAX6168 are available in 8-pin SO
packages.
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.
Pin Configuration
TOP VIEW
N.C. 1
IN 2
N.C.
3
+
MAX6161–
MAX6168
8
7
6
5
N.C.
N.C.
OUT
N.C.
GND 4
SO
19-1650; Rev 4; 12/08
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 (V
IN
+ 0.3V)
Output Short-Circuit Duration to GND or IN (V
IN
≤ 6V)
.... Continuous
Output Short-Circuit Duration 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—MAX6161 (V
OUT
= 1.25V)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Line Regulation
Load Regulation
OUT Short-Circuit Current
Long-Term Stability
Output Voltage Hysteresis
(Note 3)
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
INPUT CHARACTERISTICS
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
ΔI
IN
/ΔV
IN
2.5V ≤ V
IN
≤ 12.6V
e
OUT
V
OUT
/V
IN
t
R
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= +5V ±100mV, f = 120Hz
SYMBOL
V
OUT
TCV
OUT
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔI
OUT
I
SC
ΔV
OUT
/
time
ΔV
OUT
/
cycle
T
A
= +25°C
MAX6161A
MAX6161B
2.5V ≤ V
IN
≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 4mA
Sinking: -2mA ≤ I
OUT
≤ 0
Short to GND
Short to IN
1000hr at +25°C
CONDITIONS
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
MIN
1.248
1.246
TYP
1.250
1.250
4
6
12
0.5
1.3
110
25
115
125
MAX
1.252
1.254
10
15
150
0.9
2.5
UNITS
V
ppm/°C
µV/V
mV/mA
mA
ppm/
1000hr
ppm
MAX6161A
MAX6161B
20
15
80
50
2.5
125
3.2
12.6
150
8.0
µVp-p
µV
RMS
dB
µs
V
µA
µA/V
V
OUT
to 0.1% of final value, C
OUT
= 50pF
Guaranteed by line-regulation test
www.maximintegrated.com
Maxim Integrated
│
2
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6168 (V
OUT
= 1.800V)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Line Regulation
Load Regulation
OUT Short-Circuit Current
Long-Term Stability
Output Voltage Hysteresis
(Note 3)
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
INPUT CHARACTERISTICS
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
ΔI
IN
/ΔV
IN
2.5V ≤ V
IN
≤ 12.6V
e
OUT
ΔV
OUT
/ΔV
IN
t
R
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= +5V ±100mV, f = 120Hz
SYMBOL
V
OUT
TCV
OUT
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔI
OUT
I
SC
ΔV
OUT
/
time
ΔV
OUT
/
cycle
T
A
= +25°C
MAX6168A
MAX6168B
2.5V ≤ V
IN
≥ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 5mA
Sinking: -2mA ≤ I
OUT
≤ 0
Short to GND
Short to IN
1000hr at +25°C
CONDITIONS
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
MIN
1.798
1.795
TYP
1.800
1.800
2
4
42
0.5
1.5
110
25
80
125
MAX
1.802
1.805
5
10
200
0.9
4
UNITS
V
ppm/°C
µV/V
mV/mA
mA
ppm/
1000hr
ppm
MAX6168A
MAX6168B
22
25
78
100
2.5
100
3.4
12.6
120
8.0
µVp-p
µV
RMS
dB
µs
V
µA
µA/V
V
OUT
to 0.1% of final value, C
OUT
= 50pF
Guaranteed by line-regulation test
www.maximintegrated.com
Maxim Integrated
│
3
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6162 (V
OUT
= 2.048V)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Line Regulation
Load Regulation
OUT Short-Circuit Current
Long-Term Stability
Output Voltage Hysteresis
(Note 3)
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
INPUT CHARACTERISTICS
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
ΔI
IN
/ΔV
IN
2.5V ≤ V
IN
≤ 12.6V
e
OUT
V
OUT
/V
IN
t
R
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
SYMBOL
V
OUT
TCV
OUT
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔI
OUT
I
SC
ΔV
OUT
/
time
ΔV
OUT
/
cycle
T
A
= +25°C
MAX6162A
MAX6162B
2.5V ≤ V
IN
≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 5mA
Sinking: -2mA ≤ I
OUT
≤ 0
Short to GND
Short to IN
1000hr at +25°C
CONDITIONS
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
MIN
2.046
2.043
TYP
2.048
2.048
2
4
42
0.5
1.5
110
25
80
125
MAX
2.050
2.053
5
10
250
0.9
4
UNITS
V
ppm/°C
µV/V
mV/mA
mA
ppm/
1000hr
ppm
MAX6162A
MAX6162B
22
25
78
100
2.5
100
3.4
12.6
120
8.0
µVp-p
µV
RMS
dB
µs
V
µA
µA/V
V
OUT
to 0.1% of final value, C
OUT
= 50pF
Guaranteed by line-regulation test
www.maximintegrated.com
Maxim Integrated
│
4
MAX6161–MAX6168
Precision, Micropower, Low-Dropout,
High-Output-Current, SO-8 Voltage References
Electrical Characteristics—MAX6166 (V
OUT
= 2.500V)
PARAMETER
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
Dropout Voltage (Note 4)
Line Regulation
Load Regulation
OUT Short-Circuit Current
Long-Term Stability
Output Voltage Hysteresis
(Note 3)
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
INPUT CHARACTERISTICS
Supply Voltage Range
Quiescent Supply Current
Change in Supply Current
V
IN
I
IN
ΔI
IN
/ΔV
IN
V
OUT
+ 0.2V ≤ V
IN
≤ 12.6V
e
OUT
V
OUT
/V
IN
t
R
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= 5V ±100mV, f = 120Hz
SYMBOL
V
OUT
TCV
OUT
V
IN
- V
OUT
ΔV
OUT
/
ΔV
IN
ΔV
OUT
/
ΔI
OUT
I
SC
ΔV
OUT
/
time
ΔV
OUT
/
cycle
T
A
= +25°C
MAX6166A
MAX6166B
I
OUT
= 1mA
V
OUT
+ 0.2V ≤ V
IN
≤ 12.6V
Sourcing: 0 ≤ I
OUT
≤ 5mA
Sinking: -2mA ≤ I
OUT
≤ 0
Short to GND
Short to IN
1000hr at +25°C
CONDITIONS
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
