19-3406; Rev 1; 10/05
200kHz, 4µA, Rail-to-Rail
I/O Op Amps with Shutdown
General Description
The single MAX9910/MAX9911 and dual MAX9912/
MAX9913 operational amplifiers (op amps) feature a
maximized ratio of gain bandwidth (GBW) to supply
current and are ideal for battery-powered applications
such as portable instrumentation, portable medical
equipment, and wireless handsets. These CMOS op
amps feature an ultra-low input-bias current of 1pA, rail-
to-rail inputs and outputs, low supply current of 4µA,
and operate from a single 1.8V to 5.5V supply. For
additional power conservation, the MAX9911/MAX9913
feature a low-power shutdown mode that reduces sup-
ply current to 1nA, and puts the amplifiers’ outputs in a
high-impedance state. These devices are unity-gain
stable with a 200kHz GBW product.
The MAX9910/MAX9911 are available in 5-pin and
6-pin SC70 packages, respectively. The MAX9912 is
available in an 8-pin SOT23 package, and the
MAX9913 is available in a 10-pin µMAX® package. All
devices are specified over the -40°C to +85°C extend-
ed operating temperature range.
♦
200kHz GBW
♦
Ultra-Low 4µA Supply Current
♦
Single 1.8V to 5.5V Supply Voltage Range
♦
Ultra-Low 1pA Input Bias Current
♦
Rail-to-Rail Input and Output Voltage Ranges
♦
Low ±200µV Input Offset Voltage
♦
Low 0.001µA Shutdown Current
♦
High-Impedance Output During Shutdown
(MAX9911/MAX9913)
♦
Unity-Gain Stable
♦
Available in Tiny SC70, SOT23, and µMAX
Packages
Features
MAX9910–MAX9913
Applications
Portable Medical Devices
Portable Test Equipment
Laptops
Data-Acquisition Equipment
PART
MAX9910EXK+T
MAX9910EXK-T
MAX9911EXT+T
MAX9911EXT-T
1.8V TO 5.5V
OUTA
V
DD
Ordering Information
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
PIN-
PACKAGE
5 SC70-5
5 SC70-5
6 SC70-6
6 SC70-6
8 SOT23-8
8 SOT23-8
10 µMAX
10 µMAX
TOP
MARK
AGA
AGA
ACA
ACA
AEJY
AEJY
—
—
Typical Operating Circuit
MAX9912EKA+T
MAX9912EKA-T
MAX9913EUB
V
OUT
25kΩ
INA-
OUTB
MAX9913EUB+
+Denotes
lead-free package.
V
MID
INA+
INB-
V
SS
INB+
V
MID
+ V
BIAS
ON
MAX9913
ON
SHDNA
OFF
SHDNB
OFF
Selector Guide
PART
AMPLIFIERS
PER PACKAGE
1
1
2
2
SHUTDOWN
MODE
No
Yes
No
Yes
1MΩ
RE
CE
GLUCOSE
WE
SENSOR
MAX9910EXK-T
MAX9911EXT-T
MAX9912EKA-T
MAX9913EUB
THREE ELECTRODE GLUCOSE METER APPLICATION WITH SHUTDOWN
µMAX is a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________
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.
200kHz, 4µA, Rail-to-Rail
I/O Op Amps with Shutdown
MAX9910–MAX9913
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (V
DD
to V
SS
) ......................-0.3V to +6.0V
IN_+, IN_-, OUT_,
SHDN_...............
(V
SS
- 0.3V) to (V
DD
+ 0.3V)
Current into IN_+, IN_- ......................................................±20mA
Output Short-Circuit Duration to V
DD
or V
SS
..............Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C) ............. 247mW
6-Pin SC70 (derate 3.1mW/°C above +70°C) ............. 245mW
8-Pin SOT23 (derate 9.1mW/°C above +70°C)........... 727mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
Operating Temperature Range .......................... -40°C to +85°C
Junction Temperature .....................................................+150°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
(V
DD
= 1.8V to 5.5V, V
SS
= 0V, V
CM
= 0V, V
OUT
= V
DD
/ 2, R
L
=
∞
connected to V
DD
/ 2,
SHDN_
= V
DD
,
T
A
= +25°C,
unless otherwise
noted.) (Note 1)
PARAMETER
Supply Voltage Range
SYMBOL
V
DD
CONDITIONS
Guaranteed by PSRR test
MAX9910/MAX9911
Supply Current
I
DD
MAX9912/MAX9913
Shutdown Supply Current
Input Offset Voltage
Input-Offset-Voltage Matching
Input Bias Current
Input Offset Current
Input Resistance
Input Common-Mode Range
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
I
B
I
OS
R
IN
V
CM
CMRR
PSRR
I
DD(SHDN_)
V
OS
MAX9912/MAX9913
(Note 2)
(Note 2)
Common mode
Differential mode, -1mV < V
IN
< +1mV
Guaranteed by CMRR test
-0.1V < V
CM
< V
DD
+ 0.1V, V
DD
= 5.5V
1.8V < V
DD
< 5.5V
25mV < V
OUT
< V
DD
- 25mV,
R
L
= 100kΩ, V
DD
= 5.5V
100mV < V
OUT
< V
DD
- 100mV,
R
L
= 5kΩ, V
DD
= 5.5V
R
L
= 100kΩ
Output-Voltage-Swing High
V
OH
V
DD
- V
OUT
R
L
= 5kΩ
R
L
= 1kΩ
R
L
= 100kΩ
Output-Voltage-Swing Low
Channel-to-Channel Isolation
Output Short-Circuit Current
V
OL
CH
ISO
I
OUT(SC)
V
OUT
- V
SS
R
L
= 5kΩ
R
L
= 1kΩ
Specified at DC, MAX9912/MAX9913
V
SS
-
0.1
70
65
95
95
80
95
120
dB
110
2.5
50
250
2.5
50
250
100
±15
dB
mA
5
70
mV
5
70
mV
V
DD
= 1.8V
V
DD
= 5.5V
V
DD
= 1.8V
V
DD
= 5.5V
MIN
1.8
4
4
7
7
0.001
±0.2
±250
±1
±1
1
10
V
DD
+
0.1
±10
±10
9
0.5
±1
µA
mV
µV
pA
pA
GΩ
V
dB
dB
5.0
µA
TYP
MAX
5.5
UNITS
V
SHDN_
= GND, MAX9911/MAX9913
Open-Loop Gain
A
VOL
2
_______________________________________________________________________________________
200kHz, 4µA, Rail-to-Rail
I/O Op Amps with Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 1.8V to 5.5V, V
SS
= 0V, V
CM
= 0V, V
OUT
= V
DD
/ 2, R
L
=
∞
connected to V
DD
/ 2,
SHDN_
= V
DD
,
T
A
= +25°C,
unless otherwise
noted.) (Note 1)
PARAMETER
SHDN_
Logic Low
SHDN_
Logic High
SHDN_
Input Bias Current
Output Leakage in Shutdown
Gain-Bandwidth Product
Slew Rate
A
V
= 1V/V
Capacitive-Load Stability (See
the
Driving Capacitive Loads
Section)
Input Voltage-Noise Density
Input Current-Noise Density
Settling Time
Delay Time to Shutdown
Delay Time to Enable
Power-Up Time
t
SH
t
EN
C
LOAD
No sustained
oscillations
f = 1kHz
f = 1kHz
To 0.1%, V
OUT
= 2V step, A
V
= -1V/V
I
DD
= 5% of normal operation,
V
DD
= 5.5V, V
SHDN_
= 5.5V to 0 step
V
OUT
= 2.7V, V
OUT
settles to 0.1%,
V
DD
= 5.5V, V
SHDN_
= 0 to 5.5V step
V
DD
= 0 to 5.5V step
A
V
= 10V/V
R
L
= 5kΩ, A
V
= 1V/V
R
ISO
= 1kΩ, A
V
= 1V/V
SYMBOL
V
IL
V
IH
I
IL
I
IH
I
OUT(SHDN_)
CONDITIONS
V
DD
= 1.8V to 3.6V, MAX9911/MAX9913
V
DD
= 3.6V to 5.5V, MAX9911/MAX9913
V
DD
= 1.8V to 3.6V, MAX9911/MAX9913
V
DD
= 3.6V to 5.5V, MAX9911/MAX9913
SHDN_
= V
SS
, MAX9911/MAX9913 (Note 2)
SHDN_
= V
DD
, MAX9911/MAX9913
SHDN_
= V
SS
, V
OUT
= 0V to V
DD
,
MAX9911/MAX9913
1
200
0.1
30
250
200
100
400
0.001
18
2
30
5
nV/√Hz
pA/√Hz
µs
µs
µs
µs
pF
1.4
2
1
500
500
MIN
TYP
MAX
0.4
0.8
UNITS
V
V
nA
nA
kHz
V/µs
MAX9910–MAX9913
ELECTRICAL CHARACTERISTICS
(V
DD
= 1.8V to 5.5V, V
SS
= 0V, V
CM
= 0V, V
OUT
= V
DD
/ 2, R
L
=
∞
connected to V
DD
/ 2,
SHDN_
= V
DD
,
T
A
= -40°C to +85°C,
unless
otherwise noted.) (Note 1)
PARAMETER
Supply Voltage Range
Supply Current
Shutdown Supply Current
Input Offset Voltage
Input-Offset-Voltage
Temperature Coefficient
SYMBOL
V
DD
I
DD
I
DD(SHDN_)
V
OS
TC
VOS
±5
CONDITIONS
Guaranteed by PSRR test
MAX9910/MAX9911
MAX9912/MAX9913
V
DD
= 5.5V
MIN
1.8
TYP
MAX
5.5
5.5
11
1
±5
UNITS
V
µA
µA
mV
µV/°C
SHDN_
= GND, MAX9911/MAX9913
_______________________________________________________________________________________
3
200kHz, 4µA, Rail-to-Rail
I/O Op Amps with Shutdown
MAX9910–MAX9913
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 1.8V to 5.5V, V
SS
= 0V, V
CM
= 0V, V
OUT
= V
DD
/ 2, R
L
=
∞
connected to V
DD
/ 2,
SHDN_
= V
DD
,
T
A
= -40°C to +85°C,
unless
otherwise noted.) (Note 1)
PARAMETER
Input Bias Current
Input Offset Current
Input Common-Mode Range
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
SYMBOL
I
B
I
OS
V
CM
CMRR
PSRR
Guaranteed by CMRR test
-0.05V < V
CM
< V
DD
+ 0.05V, V
DD
= 5.5V
1.8V < V
DD
< 5.5V
25mV < V
OUT
< V
DD
- 25mV,
R
L
= 100kΩ, V
DD
= 5.5V
150mV < V
OUT
< V
DD
- 150mV,
R
L
= 5kΩ, V
DD
= 5.5V
V
DD
- V
OUT
V
OUT
- V
SS
V
DD
= 1.8V to 3.6V
V
DD
= 3.6V to 5.5V
V
DD
= 1.8V to 3.6V, MAX9911/MAX9913
V
DD
= 3.6V to 5.5V, MAX9911/MAX9913
SHDN_
= V
SS
, MAX9911/MAX9913
SHDN_
= V
DD
, MAX9911/MAX9913
SHDN_
= V
SS
, V
OUT
= 0V to V
DD
,
MAX9911/MAX9913
1.4
2
5
1000
1000
R
L
= 100kΩ
R
L
= 5kΩ
R
L
= 100kΩ
R
L
= 5kΩ
V
SS
-
0.05
60
59
85
dB
80
5
90
5
90
0.4
0.8
mV
mV
V
V
nA
nA
nA
CONDITIONS
MIN
TYP
MAX
±30
±20
V
DD
+
0.05
UNITS
pA
pA
V
dB
dB
Open-Loop Gain
A
VOL
Output-Voltage-Swing High
Output-Voltage-Swing Low
SHDN_
Logic Low
SHDN_
Logic High
SHDN_
Input-Bias Current
Output Leakage in Shutdown
V
OH
V
OL
V
IL
V
IH
I
IL
I
IH
I
OUT(SHDN_)
Note 1:
Specifications are 100% tested at T
A
= +25°C (exceptions noted). All temperature limits are guaranteed by design.
Note 2:
Guaranteed by design, not production tested.
4
_______________________________________________________________________________________
200kHz, 4µA, Rail-to-Rail
I/O Op Amps with Shutdown
MAX9910–MAX9913
Typical Operating Characteristics
(V
DD
= 3V, V
SS
= V
CM
= 0V, R
L
to V
DD
/ 2, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9910 toc01
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX9910 toc02
INPUT OFFSET VOLTAGE
vs. INPUT COMMON-MODE VOLTAGE
750
500
T
A
= -40°C
T
A
= +25°C
MAX9910 toc03
9
8
7
I
CC
(µA)
6
5
4
3
2
1
1.8
2.6
3.4
4.2
5.0
T
A
= +85°C
SINGLE
T
A
= +25°C
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
DUAL
T
A
= -40°C
12
SHUTDOWN SUPPLY CURRENT (nA)
10
8
6
4
2
0
1000
V
OS
(µV)
250
0
-250
-500
-750
-1000
-40
-15
10
35
60
85
0
0.5
TEMPERATURE (°C)
T
A
= +85°C
1.0
1.5
V
CM
(V)
2.0
2.5
3.0
5.5
V
SUPPLY
(V)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9910 toc04
INPUT BIAS CURRENT
vs. TEMPERATURE
MAX9910 toc05
INPUT BIAS CURRENT
vs. INPUT COMMON-MODE VOLTAGE
4
3
2
MAX9910 toc06
200
150
100
50
0
V
OS
(µV)
-50
-100
-150
-200
-250
-300
-350
-40
-15
10
35
60
7
6
5
4
I
B
(pA)
3
2
1
0
-1
-2
-3
I
B
+
I
B
-
5
1
I
B
(pA)
0
-1
-2
-3
-4
-5
85
-40
-15
10
35
60
85
-0.5
0
0.5
1.0
1.5
V
CM
(V)
2.0
2.5
3.0
3.5
TEMPERATURE (°C)
TEMPERATURE (°C)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9910 toc07
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
MAX9910 toc08
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
-10
-20
-30
CMRR (dB)
-40
-50
-60
-70
-80
MAX9910 toc09
0
-20
-40
140
120
100
CMRR (dB)
0
PSRR (dB)
80
60
40
20
0
-60
-80
-100
-120
0.1
1
10
100
1k
10k
FREQUENCY (Hz)
-90
-100
-40
-15
10
35
60
85
1
10
100
1k
10k
100k
TEMPERATURE (°C)
FREQUENCY (Hz)
_______________________________________________________________________________________
5
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