MAX9915EXT-T [MAXIM]
1MHz, 20レA, Rail-to-Rail I/O Op Amps with Shutdown; 为1MHz ， 20μA ，轨到轨输入/输出运算放大器，带有关断
| 型号： | MAX9915EXT-T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 1MHz, 20レA, Rail-to-Rail I/O Op Amps with Shutdown |
| 文件： | 总15页 (文件大小：503K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3407; Rev 1; 10/05
1MHz, 20µA, Rail-to-Rail
I/O Op Amps with Shutdown
General Description
Features
The single MAX9914/MAX9915 and dual MAX9916/
MAX9917 operational amplifiers feature maximized ratio
of gain bandwidth to supply current and are ideal for
battery-powered applications such as portable instru-
mentation, portable medical equipment, and wireless
handsets. These CMOS op amps feature an ultra-low
1pA input bias current, rail-to-rail inputs and outputs,
low 20µA supply current, and operate from a single
1.8V to 5.5V supply. For additional power conservation,
the MAX9915/MAX9917 feature a low-power shutdown
mode that reduces supply current to 1nA, and puts the
amplifier outputs in a high-impedance state. These
devices are unity-gain stable with a 1MHz gain-band-
width product.
♦ High 1MHz GBW
♦ Ultra-Low 20µA 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 Oꢀꢀset Voltage
♦ Low 0.001µA Shutdown Current
♦ High-Impedance Output During Shutdown
(MAX9915/MAX9917)
♦ Unity-Gain Stable
♦ Available in Tiny SC70, SOT23, and µMAX
The MAX9914 and MAX9915 are available in 5-pin and
6-pin SC70 packages, respectively. The MAX9916 is
available in an 8-pin SOT23 package, and the
Packages
®
MAX9917 in a 10-pin µMAX package. All devices are
specified over the -40°C to +85°C extended operating
temperature range.
Applications
Ordering Information
Portable Medical Devices
Portable Test Equipment
RF Tags
PIN-
PACKAGE
TOP
MARK
PART
TEMP RANGE
MAX9914EXK+T
MAX9914EXK-T
MAX9915EXT+T
MAX9915EXT-T
MAX9916EKA+T
MAX9916EKA-T
MAX9917EUB
-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
5 SC70-5
5 SC70-5
6 SC70-6
6 SC70-6
8 SOT23-8
8 SOT23-8
10 µMAX
10 µMAX
AGB
AGB
ACB
ACB
AEJZ
AEJZ
—
Laptops
Data-Acquisition Equipment
Typical Operating Circuit
3V
V
DD
MAX9917EUB+
—
MAX9916
+Denotes lead-free package.
INA+
IN+
OUTA
INA-
OUT
R1
47kΩ
+
+
+
(R1 R2 R3 R4)
=
GAIN
Selector Guide
+
(R2 R3)
R *
G
R2
10kΩ
=
=
FOR R1 R4 AND R2 R3
INB+
IN-
R4
AMPLIFIERS
PER
PACKAGE
+
1
=
GAIN
SHUTDOWN
PACKAGE
MODE
OUTB
INB-
R2
PART
R3
10kΩ
MAX9914EXK-T
MAX9915EXT-T
MAX9916EKA-T
MAX9917EUB
1
1
2
2
No
Yes
No
5 SC70-5
6 SC70-6
8 SOT23-8
10 µMAX
V
SS
R4
47kΩ
MICROPOWER, TWO-OP-AMP INSTRUMENTATION AMPLIFIER
*OPTIONAL INPUT RESISTOR R , IS FOR GAIN ADJUSTMENT
G
Yes
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.
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (V
to V )......................-0.3V to +6.0V
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
DD
SS
IN_+, IN_-, OUT_, SHDN_............... (V - 0.3V) to (V
+ 0.3V)
SS
DD
Current into IN_+, IN_-...................................................... 20mA
Output Short-Circuit Duration to V or V ..............Continuous
DD
SS
Continuous Power Dissipation (T = +70°C)
A
5-Pin SC70 (derate 3.1mW/°C above +70°C)............. 247mW
6-Pin SC70 (derate 3.1mW/°C above +70°C)............. 245mW
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
= 1.8V to 5.5V, V = 0V, V
= 0V, V
= V
/ 2, R = ∞ connected to V
/ 2, SHDN_ = V , T = +25°C, unless otherwise
DD DD A
DD
SS
CM
OUT
DD
L
noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
Supply Current
V
Guaranteed by PSRR test
1.8
5.5
V
DD
V
V
V
V
= 1.8V
= 5.5V
= 1.8V
= 5.5V
20
20
DD
DD
DD
DD
MAX9914/MAX9915
MAX9916/MAX9917
25
I
µA
DD
40
40
50
0.5
1
Shutdown Supply Current
Input Offset Voltage
I
SHDN_ = GND, MAX9915/MAX9917
0.001
0.2
250
1
µA
mV
µV
DD(SHDN_)
V
OS
Input-Offset-Voltage Matching
Input Bias Current
MAX9916/MAX9917
(Note 2)
I
10
10
pA
pA
B
Input Offset Current
I
(Note 2)
1
OS
Common mode
1
Input Resistance
R
GΩ
IN
Differential mode, -1mV < V < +1mV
IN
10
V
0.1
-
V
+
DD
0.1
SS
Input Common-Mode Range
V
Guaranteed by CMRR test
V
CM
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
CMRR
PSRR
-0.1V < V
< V
+ 0.1V, V = 5.5V
DD
70
65
80
85
dB
dB
CM
DD
1.8V < V
< 5.5V
DD
25mV < V
R = 100kΩ, V
L
< V
- 25mV,
DD
OUT
95
95
120
110
= 5.5V
DD
Open-Loop Gain
A
dB
VOL
100mV < V
R = 5kΩ, V
L
< V
- 100mV,
OUT
DD
= 5.5V
DD
R = 100kΩ
2.5
50
5
L
Output-Voltage-Swing High
Output-Voltage-Swing Low
V
V
V
- V
OUT
mV
mV
R = 5kΩ
L
70
OH
DD
R = 1kΩ
250
2.5
50
L
R = 100kΩ
L
5
V
- V
SS
R = 5kΩ
L
70
OL
OUT
R = 1kΩ
250
100
15
L
Channel-to-Channel Isolation
Output Short-Circuit Current
CH
Specified at DC, MAX9916/MAX9917
dB
ISO
I
mA
OUT(SC)
2
_______________________________________________________________________________________
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(V
= 1.8V to 5.5V, V = 0V, V
= 0V, V
= V
/ 2, R = ∞ connected to V
/ 2, SHDN_ = V , T = +25°C, unless otherwise
DD DD A
DD
SS
CM
OUT
DD
L
noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
0.4
UNITS
V
V
V
V
= 1.8V to 3.6V, MAX9915/MAX9917
= 3.6V to 5.5V, MAX9915/MAX9917
= 1.8V to 3.6V, MAX9915/MAX9917
= 3.6V to 5.5V, MAX9915/MAX9917
DD
DD
DD
DD
SHDN_ Logic Low
V
V
IL
0.8
1.4
2
SHDN_ Logic High
V
V
IH
I
SHDN_ = V , MAX9915/MAX9917 (Note 2)
1
IL
SS
SHDN_ Input Bias Current
Output Leakage in Shutdown
nA
nA
I
IH
SHDN_ = V , MAX9915/MAX9917
500
DD
SHDN_ = V , V
= 0V to V
,
SS OUT
DD
I
1
500
OUT(SHDN_)
MAX9915/MAX9917
Gain-Bandwidth Product
Phase Margin
Gain Margin
1
45
MHz
degrees
dB
C = 15pF
L
C = 15pF
L
10
Slew Rate
0.5
30
V/µs
A = 1V/V
V
Capacitive-Load Stability (See
the Driving Capacitive Loads
Section)
A = 10V/V
100
100
100
160
0.001
3.5
No sustained
oscillations
V
C
pF
LOAD
R = 5kΩ, A = 1V/V
L
V
R
= 1kΩ, A = 1V/V
V
ISO
Input Voltage-Noise Density
Input Current-Noise Density
Settling Time
f = 1kHz
f = 1kHz
nV/√Hz
pA/√Hz
µs
To 0.1%, V
= 2V step, A = -1V/V
V
OUT
I
V
= 5% of normal operation,
DD
Delay Time to Shutdown
t
t
2
µs
SH
= 5.5V, V
= 5.5V to 0 step
DD
SHDN_
V
V
= 2.7V, V
OUT
settles to 0.1%,
OUT
Delay Time to Enable
Power-Up Time
10
2
µs
µs
EN
= 5.5V, V
= 0 to 5.5V step
DD
SHDN_
V
= 0 to 5.5V step
DD
ELECTRICAL CHARACTERISTICS
(V
= 1.8V to 5.5V, V = 0V, V
= 0V, V
= V
/ 2, R = ∞ connected to V
/ 2, SHDN_ = V , T = -40°C to +85°C, unless
DD DD A
DD
SS
CM
OUT
DD
L
otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
1.8
TYP
MAX
5.5
29
60
1
UNITS
Supply Voltage Range
V
Guaranteed by PSRR test
MAX9914/MAX9915
V
DD
Supply Current
I
V
= 5.5V
µA
DD
DD
MAX9916/MAX9917
Shutdown Supply Current
Input Offset Voltage
I
SHDN_ = GND, MAX9915/MAX9917
µA
DD(SHDN_)
V
3
mV
OS
Input-Offset-Voltage Temperature
Coefficient
TC
5
µV/°C
VOS
_______________________________________________________________________________________
3
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(V
= 1.8V to 5.5V, V = 0V, V
= 0V, V
= V
/ 2, R = ∞ connected to V
/ 2, SHDN_ = V , T = -40°C to +85°C, unless
DD DD A
DD
SS
CM
OUT
DD
L
otherwise noted.) (Note 1)
PARAMETER
Input Bias Current
SYMBOL
CONDITIONS
MIN
TYP
MAX
30
UNITS
pA
I
B
Input Offset Current
I
20
pA
OS
V
0.05
-
V
0.05
+
DD
SS
Input Common-Mode Range
V
Guaranteed by CMRR test
V
CM
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
CMRR
PSRR
-0.05V < V
< V
+ 0.05V, V
- 25mV,
DD
= 5.5V
60
60
dB
dB
CM
DD
DD
1.8V < V
< 5.5V
DD
25mV < V
< V
DD
OUT
85
85
R = 100kΩ, V
L
= 5.5V
Open-Loop Gain
A
dB
VOL
150mV < V
R = 5kΩ, V
L
< V
- 150mV,
OUT
DD
= 5.5V
DD
R = 100kΩ
6
L
Output-Voltage-Swing High
Output-Voltage-Swing Low
SHDN_ Logic Low
V
V
V
- V
OUT
mV
mV
V
OH
DD
R = 5kΩ
L
90
5
R = 100kΩ
L
V
- V
SS
OL
OUT
R = 5kΩ
L
90
0.4
0.8
V
V
V
V
= 1.8V to 3.6V, MAX9915/MAX9917
= 3.6V to 5.5V, MAX9915/MAX9917
= 1.8V to 3.6V, MAX9915/MAX9917
= 3.6V to 5.5V, MAX9915/MAX9917
DD
DD
DD
DD
V
IL
1.4
2
SHDN_ Logic High
V
V
IH
I
SHDN_ = V , MAX9915/MAX9917
5
nA
nA
IL
SS
SHDN_ Input Bias Current
Output Leakage in Shutdown
I
IH
SHDN_ = V , MAX9915/MAX9917
1000
DD
SHDN_ = V , V
= 0V to V
,
SS OUT
DD
I
1000
nA
OUT(SHDN_)
MAX9915/MAX9917
Note 1: Specifications are 100% tested at T = +25°C (exceptions noted). All temperature limits are guaranteed by design.
A
Note 2: Guaranteed by design, not production tested
4
_______________________________________________________________________________________
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Typical Operating Characteristics
(V
DD
= 3V, V = V
= 0V, R to V
/ 2, T = +25°C, unless otherwise noted.)
A
SS
CM
L
DD
INPUT OFFSET VOLTAGE
vs. INPUT COMMON-MODE VOLTAGE
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
1000
750
50
12
T
T
= +25°C
T
A
= -40°C
A
T
= +85°C
45
40
35
30
25
20
15
10
5
A
A
10
8
DUAL
500
6
T
A
= +85°C
250
= +25°C
T
A
= -40°C
A
T
= +85°C
4
0
2
T
A
= +25°C
-250
-500
-750
-1000
SINGLE
0
T
A
= -40°C
-2
-4
-6
0
0
0.5
1.0
1.5
(V)
2.0
2.5
3.0
1.8
2.6
3.3
V
4.1
(V)
4.8
5.5
-40
-15
10
35
60
85
V
TEMPERATURE (°C)
CM
SUPPLY
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
INPUT BIAS CURRENT
vs. TEMPERATURE
INPUT BIAS CURRENT
vs. INPUT COMMON-MODE VOLTAGE
0
-20
7
6
5
4
-40
5
3
-60
4
2
I -
B
I +
B
-80
3
1
-100
-120
-140
-160
-180
-200
2
0
1
-1
-2
-3
-4
-5
0
-1
-2
-3
-40
-15
10
35
60
85
-40
-15
10
35
60
85
-0.5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
TEMPERATURE (°C)
TEMPERATURE (°C)
V
CM
(V)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
COMMON-MODE REJECTION RATIO
vs. TEMPERATURE
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
140
120
100
80
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
60
40
20
0
0.1
1
10
100
1k
10k
-40
-15
10
35
60
85
1
10
100
1k
10k
100k
FREQUENCY (Hz)
TEMPERATURE (°C)
FREQUENCY (Hz)
_______________________________________________________________________________________
5
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Typical Operating Characteristics (continued)
(V
DD
= 3V, V = V
= 0V, R to V
/ 2, T = +25°C, unless otherwise noted.)
SS
CM
L
DD A
OUTPUT-SWING HIGH
vs. TEMPERATURE
OUTPUT-SWING LOW
vs. TEMPERATURE
SLEW RATE vs. SUPPLY VOLTAGE
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1000
100
10
1000
100
10
R = 1kΩ
L
R = 1kΩ
L
R = 5kΩ
L
R = 5kΩ
L
R = 100kΩ
R = 100kΩ
L
L
-0.5
-1.0
-1.5
R TO V
R TO V
L DD
L
SS
DD
V
OH
= V - V
V
OL
= V
OUT SS
- V
OUT
1
1
1.8
2.8
3.8
4.8
5.5
-40
-15
10
35
60
85
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
OPEN-LOOP GAIN
OPEN-LOOP GAIN
GAIN AND PHASE
vs. TEMPERATURE (R TO V
)
SS
vs. TEMPERATURE (R TO V )
vs. FREQUENCY (R = ∞, C
= 15pF)
LOAD
MAX9914 toc15
L
L DD
L
140
120
100
80
160
140
120
100
80
100
80
225
180
135
90
R = 100kΩ
L
R = 100kΩ
L
A
= 1000V/V
V
R = 5kΩ
L
GAIN
60
40
R = 5kΩ
L
20
45
R = 1kΩ
L
R = 1kΩ
L
0
0
PHASE
-20
-40
-60
-80
-100
-120
-45
-90
-135
-180
-225
-270
60
60
40
40
20
20
0
0
-40
-15
10
35
60
85
-40
-15
10
35
60
85
1
10 100 1k
10k 100k 1M 10M
TEMPERATURE (°C)
TEMPERATURE (°C)
FREQUENCY (Hz)
GAIN AND PHASE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
CROSSTALK vs. FREQUENCY
vs. FREQUENCY (R = 5kΩ, C
= 100pF)
LOAD
MAX9914 toc16
L
100
225
180
135
90
0
0
-20
MAX9916/MAX9917
A
= 1000V/V
80
V
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
GAIN
60
40
-40
20
45
0
0
-60
PHASE
-20
-40
-60
-80
-100
-120
-45
-90
-135
-180
-225
-270
-80
V
OUT
= 2V
P-P
-100
-120
1
10 100 1k
10k 100k 1M 10M
10
100
1k
10k
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
6
_______________________________________________________________________________________
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Typical Operating Characteristics (continued)
(V
DD
= 3V, V = V
= 0V, R to V
/ 2, T = +25°C, unless otherwise noted.)
A
SS
CM
L
DD
VOLTAGE-NOISE DENSITY
vs. FREQUENCY
RESISTOR ISOLATION
vs. CAPACITIVE LOAD
3000
POWER-UP SETTLING TIME
MAX9914 toc21
10,000
1000
100
A
= 1V/V
V
FOR A = 10V/V NO R NEEDED
V
ISO
2500
2000
1500
1000
500
V
DD
1V/div
OUTPUT
500mV/div
IN+ = V / 2
DD
A
V
= 1V/V
0
1
10
100
1k
10k
100k
10
100
1000
10,000
1µs/div
FREQUENCY (Hz)
C
LOAD
(pF)
SMALL-SIGNAL GAIN
vs. FREQUENCY
LARGE-SIGNAL GAIN
vs. FREQUENCY
SHUTDOWN RESPONSE
MAX9914 toc22
10
8
4
3
A
V
C
= 1V/V
A
V
C
= 1V/V
V
OUT
LOAD
V
OUT
LOAD
IN+ = V / 2
DD
= 100mV
= 15pF
= 2V
P-P
P-P
3V
A
V
= 1V/V
= 15pF
6
SHDN = 3V
2
4
1
0V
2
0
0
-2
-4
-6
-8
-10
-1
-2
-3
-4
1.5V
0V
OUTPUT
1k
10k
100k
FREQUENCY (Hz)
1M
10M
1
10
100
1000
20µs/div
FREQUENCY (kHz)
SMALL-SIGNAL PULSE RESPONSE
(C = 15pF)
SMALL-SIGNAL PULSE RESPONSE
(C
= 100pF)
LOAD
LOAD
MAX9914 toc25
MAX9914 toc26
A
V
= 10V/V
A
V
= 1V/V
IN+
IN+
50mV/div
5mV/div
OUTPUT
OUTPUT
50mV/div
50mV/div
1µs/div
5µs/div
_______________________________________________________________________________________
7
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Typical Operating Characteristics (continued)
(V
DD
= 3V, V = V
= 0V, R to V
/ 2, T = +25°C, unless otherwise noted.)
SS
CM
L
DD A
LARGE-SIGNAL PULSE RESPONSE
(C = 15pF)
LARGE-SIGNAL PULSE RESPONSE
(C = 100pF)
LOAD
LOAD
MAX9914 toc27
MAX9914 toc28
A
V
= 1V/V
A = 10V/V
V
IN+
1V/div
IN+
100mV/div
OUTPUT
1V/div
OUTPUT
1V/div
5µs/div
5µs/div
PERCENT OVERSHOOT
vs. CAPACITIVE LOAD
OUTPUT WAVEFORM WITH R
ISO
(C
LOAD
= 47pF, R = 2.3kΩ)
ISO
MAX9914 toc30
7
A
V
= 1V/V
6
5
4
3
2
1
INPUT
50mV/div
R = 1MΩ
L
R = 100kΩ
L
R = 10kΩ
L
OUTPUT
50mV/div
0
20
40
60
(pF)
80
100
5µs/div
C
LOAD
OUTPUT WAVEFORM WITHOUT R
ISO
(C
LOAD
= 47pF)
MAX9914 toc31
A
V
= 1V/V
IN+
50mV/div
OUTPUT
50mV/div
5µs/div
8
_______________________________________________________________________________________
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Pin Description
PIN
NAME
FUNCTION
MAX9914
MAX9915
MAX9916
MAX9917
1
2
1
2
—
4
—
4
IN+
Noninverting Amplifier Input
Negative Supply Voltage
Inverting Amplifier Input
V
SS
3
3
—
—
8
—
—
10
—
1
IN-
4
4
OUT
Amplifier Output
5
6
V
Positive Supply Voltage
DD
—
—
—
—
—
—
—
—
—
5
—
1
SHDN
OUTA
INA-
Shutdown
—
—
—
—
—
—
—
—
Amplifier Output Channel A
Inverting Amplifier Input Channel A
Noninverting Amplifier Input Channel A
Shutdown Channel A
2
2
3
3
INA+
—
—
5
5
SHDNA
SHDNB
INB+
6
Shutdown Channel B
7
Noninverting Amplifier Input Channel B
Inverting Amplifier Input Channel B
Amplifier Output Channel B
6
8
INB-
7
9
OUTB
The MAX9914–MAX9917 are capable of driving the out-
put to within 5mV of both supply rails with a 100kΩ load.
These devices can drive a 5kΩ load with swings to within
60mV of the rails. Figure 1 shows no clipping at the out-
put voltage swing of the MAX9914–MAX9917 configured
as a unity-gain buffer powered from a single 3V supply.
Detailed Description
Featuring a maximized ratio of gain bandwidth to
supply current, low operating supply voltage, low input
bias current, and rail-to-rail inputs and outputs, the
MAX9914–MAX9917 are an excellent choice for preci-
sion or general-purpose low-current, low-voltage, bat-
tery-powered applications. These CMOS devices
consume an ultra-low 20µA (typ) supply current and a
200µV (typ) offset voltage. For additional power
conservation, the MAX9914/MAX9917 feature a low-
power shutdown mode that reduces supply current to
1nA (typ), and puts the amplifiers’ output in a high-
impedance state. These devices are unity-gain stable
with a 1MHz gain-bandwidth product driving capacitive
loads up to 30pF. The capacitive load can be
increased to 100pF when the amplifier is configured for
a 10V/V gain.
Low Input Bias Current
The MAX9914–MAX9917 feature ultra-low 1pA (typ)
input bias current. The variation in the input bias
current is minimal with changes in the input voltage due
to very high input impedance (in the order of 1GΩ).
Applications Information
Driving Capacitive Loads
The MAX9914–MAX9917 amplifiers are unity-gain
stable for loads up to 30pF. However, the capacitive
load can be increased to 100pF when the amplifier is
configured for a minimum gain of 10V/V.
Rail-to-Rail Inputs and Outputs
The MAX9914–MAX9917 amplifiers all have a parallel-
connected n- and p-channel differential input stage that
allows an input common-mode voltage range that
extends 100mV beyond the positive and negative sup-
ply rails, with excellent common-mode rejection.
Applications that require greater capacitive drive
capability should use an isolation resistor between the
output and the capacitive load (Figure 2). Also, in
unity-gain applications with relatively small R (about
L
5kΩ), the capacitive load can be increased up to 100pF.
_______________________________________________________________________________________
9
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Power-Supply Considerations
RAIL-TO-RAIL OUTPUT VOLTAGE RANGE
The MAX9914–MAX9917 are optimized for single 1.8V
to 5.5V supply operation. A high amplifier power-supply
rejection ratio of 85dB (typ) allows the devices to be
powered directly from a battery, simplifying design and
extending battery life.
3V
IN_
1V/div
0V
3V
Power-Up Settling Time
The MAX9914–MAX9917 typically require 2µs after
power-up. Supply settling time depends on the supply
voltage, the value of the bypass capacitor, the output
impedance of the incoming supply, and any lead resis-
tance or inductance between components. Op amp
settling time depends primarily on the output voltage
and is slew-rate limited. Figure 3 shows the MAX991_ in
a noninverting voltage follower configuration with the
input held at midsupply. The output settles in approxi-
OUT_
1V/div
0V
V
DD
= 3V
200µs/div
Figure 1. Rail-to-Rail Output Voltage Range
mately 3.5µs for V
= 3V (see the Typical Operating
DD
Characteristics for the Power-Up Settling Time graph).
Shutdown Mode
The MAX9915 and MAX9917 feature active-low shut-
down inputs. The MAX9915 and MAX9917 enter shut-
down in 2µs (typ) and exit shutdown in 10µs (typ). The
amplifiers’ outputs are high impedance in shutdown
mode. Drive SHDN low to enter shutdown. Drive SHDN
high to enable the amplifier. The MAX9917 dual amplifi-
er features separate shutdown inputs. Shut down both
amplifiers for lowest quiescent current.
R
ISO
MAX9914–
MAX9917
R
C
L
L
R
L
A
V
=
≈ 1V/V
R + R
L
ISO
Power-Supply Bypassing and Layout
Bypass V
with a 0.1µF capacitor to ground as close
DD
Figure 2. Using a Resistor to Isolate a Capacitive Load from
the Op Amp
to the pin as possible to minimize noise.
Good layout techniques optimize performance by
decreasing the amount of stray capacitance and induc-
tance to the op amp’s inputs and outputs. Minimize
stray capacitance and inductance, by placing external
components close to the IC.
5.5V
0V
IN-
IN+
V
DD
100kΩ
100kΩ
OUT
MAX991_
V
SS
Figure 3. Power-Up Test Configuration
10 ______________________________________________________________________________________
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Pin Configurations
TOP VIEW
MAX9914
MAX9915
SHDN
IN+
1
2
3
5
4
V
IN+
1
2
3
6
5
4
V
DD
DD
V
SS
V
SS
SHDN
OUT
IN-
OUT
IN-
SC70
SC70
MAX9916
MAX9917
OUTA
1
2
3
4
8
7
6
5
V
OUTA
1
2
3
4
5
10 V
DD
DD
INA-
INA+
9
8
7
6
OUTB
INB-
INA-
INA+
OUTB
INB-
V
SS
INB+
SHDNA
V
SS
INB+
SHDNA
SHDNB
SHDNB
SOT23
µMAX
Chip Information
MAX9914 TRANSISTOR COUNT: 180
MAX9915 TRANSISTOR COUNT: 180
MAX9916 TRANSISTOR COUNT: 292
MAX9917 TRANSISTOR COUNT: 292
PROCESS: BiCMOS
______________________________________________________________________________________ 11
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, 5L SC70
1
21-0076
C
1
12 ______________________________________________________________________________________
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, 6L SC70
1
21-0077
C
1
______________________________________________________________________________________ 13
1MHz, 20µA, Rail-to-Rail I/O Op Amps
with Shutdown
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
SEE DETAIL "A"
SYMBOL
MIN
MAX
e
b
A
0.90
0.00
0.90
0.28
0.09
2.80
2.60
1.50
0.30
1.45
0.15
1.30
0.45
0.20
3.00
3.00
1.75
0.60
C
L
A1
A2
b
C
D
E
C
C
L
E1
L
E
E1
L
0.25 BSC.
L2
e
PIN 1
I.D. DOT
(SEE NOTE 6)
0.65 BSC.
1.95 REF.
0∞
e1
0
8∞
e1
D
C
C
L
L2
A2
A
GAUGE PLANE
A1
SEATING PLANE
C
0
L
NOTE:
1. ALL DIMENSIONS ARE IN MILLIMETERS.
2. FOOT LENGTH MEASURED FROM LEAD TIP TO UPPER RADIUS OF
HEEL OF THE LEAD PARALLEL TO SEATING PLANE C.
DETAIL "A"
3. PACKAGE OUTLINE EXCLUSIVE OF MOLD FLASH & METAL BURR.
4. PACKAGE OUTLINE INCLUSIVE OF SOLDER PLATING.
5. COPLANARITY 4 MILS. MAX.
6. PIN 1 I.D. DOT IS 0.3 MM ÿ MIN. LOCATED ABOVE PIN 1.
PROPRIETARY INFORMATION
TITLE:
7. SOLDER THICKNESS MEASURED AT FLAT SECTION OF LEAD
BETWEEN 0.08mm AND 0.15mm FROM LEAD TIP.
PACKAGE OUTLINE, SOT-23, 8L BODY
8. MEETS JEDEC MO178.
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0078
D
1
14 ______________________________________________________________________________________
1MHz, 20µA, Rail-to-Rail
I/O Op Amps with Shutdown
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
e
4X S
10
10
INCHES
MAX
MILLIMETERS
MAX
1.10
0.15
0.95
3.05
3.00
3.05
3.00
5.05
0.70
DIM MIN
MIN
-
A
-
0.043
0.006
0.037
0.120
0.118
0.120
0.118
0.199
A1
A2
D1
D2
E1
E2
H
0.002
0.030
0.116
0.114
0.116
0.114
0.187
0.05
0.75
2.95
2.89
2.95
2.89
4.75
0.40
H
Ø0.50 0.1
0.6 0.1
L
0.0157 0.0275
0.037 REF
L1
b
0.940 REF
0.007
0.0106
0.177
0.270
0.200
1
1
e
0.0197 BSC
0.500 BSC
0.6 0.1
c
0.0035 0.0078
0.0196 REF
0.090
BOTTOM VIEW
0.498 REF
S
α
TOP VIEW
0°
6°
0°
6°
D2
E2
GAGE PLANE
A2
c
A
E1
b
L
α
A1
D1
L1
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 10L uMAX/uSOP
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0061
I
1
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15
© 2005 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products, Inc.
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