ALD1701 [ALD]
MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER; 微功耗轨到轨CMOS运算放大器
| 型号： | ALD1701 |
| 厂家： | 
ADVANCED LINEAR DEVICES |
| 描述： | MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER |
| 文件： | 总6页 (文件大小：49K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A
L
D
DVANCED
INEAR
EVICES, INC.
ALD1701A/ALD1701B
ALD1701/ALD1701G
MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER
GENERAL DESCRIPTION
FEATURES
TheALD1701isamonolithicCMOSmicropowerhighslewrateoperational
amplifier intended for a broad range of analog applications using ±1V to
±6V dual power supply systems, as well as +2V to +12V battery operated
systems. All device characteristics are specified for +5V single supply or
±2.5V dual supply systems. Supply current is 250µA maximum at 5V
supply voltage. It is manufactured with Advanced Linear Devices' en-
hanced ACMOS silicon gate CMOS process.
• All parameters specified for +5V single
supply or ±2.5V dual supply systems
• Rail to rail input and output voltage ranges
• No frequency compensation required --
unity gain stable
• Extremely low input bias currents --
1.0pA typical (30pA max.)
• Ideal for high source impedance
applications
• Dual power supply ±1.0V to ±6.0V operation
• Single power supply +2V to +12V operation
• High voltage gain -- typically 100V/mV
@ ±2.5V(100dB)
The ALD1701 is designed to offer a trade-off of performance parameters
providing a wide range of desired specifications. It offers the popular
industry standard pin configuration of µA741 and ICL7611 types.
The ALD1701 has been developed specifically for the +5V single supply or
±1V to ±6V dual supply user. Several important characteristics of the
device make application easier to implement at those voltages.
• Drive as low as 10KΩ load
• Output short circuit protected
• Unity gain bandwidth of 0.7MHz
• Slew rate of 0.7V/µs
First, the operational amplifier can operate with rail to rail input and output
voltages. This means the signal input voltage and output voltage can be
equal to the positive and negative supply voltages. This feature allows
numerous analog serial stages and flexibility in input signal bias levels.
Secondly, the device was designed to accommodate mixed applications
where digital and analog circuits may operate off the same power supply
orbattery. Thirdly,theoutputstagecantypicallydriveupto50pFcapacitive
and 10KΩ resistive loads.
• Low power dissipation
APPLICATIONS
• Voltage amplifier
• Voltage follower/buffer
• Charge integrator
• Photodiode amplifier
These features, combined with extremely low input currents, high open
loop voltage gain of 100V/mV, useful bandwidth of 700KHz, a slew rate of
0.7V/µs, low power dissipation of 0.5mW, low offset voltage and tempera-
ture drift, make the ALD1701 a versatile, micropower operational amplifier.
• Data acquisition systems
• High performance portable instruments
• Signal conditioning circuits
• Sensor and transducer amplifiers
• Low leakage amplifiers
• Active filters
The ALD1701, designed and fabricated with silicon gate CMOS techno-
logy, offers 1pA typical input bias current. On chip offset voltage trimming
allows the device to be used without nulling in most applications.
• Sample/Hold amplifier
• Picoammeter
• Current to voltage converter
PIN CONFIGURATION
ORDERING INFORMATION
Operating Temperature Range
8
7
6
5
N/C
-IN
1
2
3
4
N/C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
+
V
8-Pin
8-Pin
8-Pin
CERDIP
Small Outline
Plastic Dip
+IN
OUT
N/C
Package
Package (SOIC)
Package
-
ALD1701A DA
ALD1701B DA
ALD1701 DA
ALD1701G DA
ALD1701A SA
ALD1701B SA
ALD1701 SA
ALD1701G SA
ALD1701A PA
ALD1701B PA
ALD1701 PA
ALD1701G PA
V
TOP VIEW
DA, PA, SA PACKAGE
* N/C Pin is internally connected. Do not connect externally.
* Contact factory for industrial temperature range
© 1998 Advanced Linear Devices, Inc. 415Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V+
Differential input voltage range
Power dissipation
13.2V
-0.3V to V+ +0.3V
600 mW
Operating temperature range PA, SA package
0°C to +70°C
-55°C to +125°C
-65°C to +150°C
+260°C
DA package
Storage temperature range
Lead temperature, 10 seconds
OPERATING ELECTRICAL CHARACTERISTICS
T = 25°C V = ±2.5V unless otherwise specified
A
S
1701A
Typ
1701B
Min Typ
1701
Typ Max
1701G
Typ
Test
Conditions
Parameter
Symbol Min
Max
Max Min
Min
Max
Unit
Supply
V
V
±1.0
±6.0 ±1.0
±6.0 ±1.0
±6.0
±1.0
±6.0
Dual Supply
S
+
Voltage
2.0
12.0
2.0
12.0
2.0
12.0
2.0
12.0
V
Single Supply
Input Offset
Voltage
V
0.9
1.7
2.0
2.8
4.5
5.3
10.0 mV
11.0 mV
R ≤ 100KΩ
S
OS
0°C ≤ T ≤ +70°C
A
Input Offset
Current
I
1.0
1.0
25
240
1.0
1.0
25
240
1.0
1.0
25
240
1.0
1.0
30 pA
450 pA
T
= 25°C
OS
A
0°C ≤ T ≤ +70°C
A
Input Bias
Current
I
B
30
300
30
300
30
300
50 pA
600 pA
T
A
= 25°C
0°C ≤ T ≤ +70°C
A
Input Voltage
Range
V
-0.3
-2.8
5.3
2.8
-0.3
-2.8
5.3 -0.3
2.8 -2.8
5.3
2.8
-0.3
-2.8
5.3
2.8
V
V
V+ = +5V
IR
V
= ±2.5V
S
Input
R
1012
1012
1012
1012
Ω
IN
Resistance
Input Offset
Voltage Drift
TCV
OS
7
7
7
7
µV/°C
R
R
≤ 100KΩ
≤ 100KΩ
S
S
Power Supply
Rejection Ratio
PSRR
70
70
80
80
65
65
80
80
65
65
80
80
60
60
80
80
dB
dB
0°C ≤ T ≤ +70°C
A
Common Mode CMRR 70
83
83
65
65
83
83
65
65
83
83
60
60
83
83
dB
dB
R
≤ 100KΩ
S
Rejection Ratio
70
0°C ≤ T ≤ +70°C
A
Large Signal
Voltage Gain
A
40
20
100
1000
32
20
100
1000
32
20
100
1000
20
10
80
1000
V/ mV
V/ mV
V/ mV
R
R
R
= 100KΩ
≥ 1MΩ
= 100KΩ
V
L
L
L
0°C ≤ T ≤ +70°C
A
+
R =1MΩ V = +5V
L
Output
Voltage
Range
V
low
0.001 0.01
0.001 0.01
4.99 4.999
-2.48 -2.40
2.48
0.001
0.01
0.001 0.01
4.99 4.999
-2.48 -2.40
V
V
V
V
O
O
O
O
V
V
V
high 4.99 4.999
4.99 4.999
0°C ≤ T ≤ +70°C
A
R =100KΩ
L
0°C ≤ T ≤ +70°C
A
low
-2.48 -2.40
-2.48 -2.40
2.48
high 2.40
2.48
2.40
2.40
2.40 2.48
Output Short
I
1
1
1
1
mA
SC
Circuit Current
Supply Current
I
S
120
250
120
250
120
250
120
300 µA
V
= 0V
IN
No Load
Power
P
1.25
1.25
1.25
1.50 mW
V = ±2.5V
S
D
Dissipation
ALD1701A/ALD1701B
ALD1701/ALD1701G
Advanced Linear Devices
2
OPERATING ELECTRICAL CHARACTERISTICS (cont'd)
= 25°C V = ±2.5V unless otherwise specified
T
A
S
1701A
Symbol Min Typ
1701B
Typ
1701
Typ Max
1701G
Typ Max
Test
Conditions
Parameter
Max Min
Max Min
Min
Unit
Input
C
1
1
1
1
pF
IN
Capacitance
Bandwidth
Slew Rate
B
S
400
700
0.7
400
700
0.7
400 700
700
0.7
KHz
W
R
0.33
0.33
0.33
0.7
V/µs
A
= +1
V
R = 100KΩ
L
Rise time
t
0.2
20
0.2
20
0.2
20
0.2
20
µs
R = 100KΩ
L
r
Overshoot
Factor
%
R =100KΩ
L
C = 50pF
L
Settling Time
t
10.0
10.0
10.0
10.0
µs
0.1%
s
A
= -1R =100KΩ
L
V
C = 50pF
L
T
A
= 25°C V = ±5.0V unless otherwise specified
S
1701A
Symbol Min Typ
1701B
Typ
1701
1701G
Test
Parameter
Max Min
Max Min
Typ Max
Min
Typ Max
Unit
Conditions
Power Supply
Rejection Ratio
PSRR
83
83
83
83
dB
R
S
≤ 100KΩ
Common Mode CMRR
Rejection Ratio
83
83
83
83
dB
R
S
≤ 100KΩ
Large Signal
Voltage Gain
A
250
250
250
250
V/mV
R =100KΩ
L
V
Output Voltage
Range
V
V
low
-4.98 -4.90
-4.98 -4.90
4.98
-4.98 -4.90
-4.98 -4.90
V
V
R
L
=100KΩ
O
O
high 4.90 4.98
4.90
4.90 4.98
4.90 4.98
Bandwidth
Slew Rate
B
S
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
MHz
W
R
V/µs
A
V
= +1
C = 50pF
L
V = ±2.5V -55°C ≤ T ≤ +125°C unless otherwise specified
S
A
1701B DA
Typ
1701 DA
Test
Parameter
Symbol
Min
Max
Min
Typ
Max
Unit
Conditions
≤ 100KΩ
Input Offset
Voltage
V
3.0
6.5
mV
R
OS
S
Input Offset
Current
I
I
8.0
8.0
nA
nA
OS
Input Bias
Current
10.0
10.0
B
Power Supply
Rejection Ratio
PSRR
CMRR
60
60
15
75
83
50
60
60
15
75
83
50
dB
R
R
≤ 100KΩ
≤ 100KΩ
S
S
Common Mode
Rejection Ratio
dB
Large Signal
Voltage Gain
A
V/ mV
R = 100KΩ
L
V
Output Voltage
Range
V
V
low
high
-2.47
2.45
-2.40
-2.47
2.45
-2.40
V
V
O
O
2.35
2.35
R = 100KΩ
L
ALD1701A/ALD1701B
ALD1701/ALD1701G
Advanced Linear Devices
3
Design & Operating Notes:
1. The ALD1701 CMOS operational amplifier uses a 3 gain stage
architecture and an improved frequency compensation scheme to
achieve large voltage gain, high output driving capability, and better
frequency stability. In a conventional CMOS operational amplifier
design, compensation is achieved with a pole splitting capacitor
together with a nulling resistor. This method is, however, very bias
dependent and thus cannot accommodate the large range of supply
voltage operation as is required from a stand alone CMOS opera-
tional amplifier. The ALD1701 is internally compensated for unity
gain stability using a novel scheme that does not use a nulling
resistor. This scheme produces a clean single pole roll off in the gain
characteristics while providing for more than 70 degrees of phase
margin at the unity gain frequency.
analog signal from the source will not be distorted by input bias
currents. Normally, this extremely high input impedance of greater
than 1012Ω would not be a problem as the source impedance would
limit the node impedance. However, for applications where source
impedance is very high, it may be necessary to limit noise and hum
pickup through proper shielding.
4. TheoutputstageconsistsofclassABcomplementaryoutputdrivers,
capable of driving a low resistance load. The output voltage swing
is limited by the drain to source on-resistance of the output transis-
tors as determined by the bias circuitry, and the value of the load
resistor. When connected in the voltage follower configuration, the
oscillation resistant feature, combined with the rail to rail input and
output feature, makes an effective analog signal buffer for medium
to high source impedance sensors, transducers, and other circuit
networks.
2. The ALD1701 has complementary p-channel and n-channel input
differentialstagesconnectedinparalleltoaccomplishrailtorailinput
common mode voltage range. This means that with the ranges of
common mode input voltage close to the power supplies, one of the
two differential stages is switched off internally. To maintain compa-
tibility with other operational amplifiers, this switching point has been
selected to be about 1.5V below the positive supply voltage. Since
offset voltage trimming on the ALD1701 is made when the input
voltage is symmetrical to the supply voltages, this internal switching
does not affect a large variety of applications such as an inverting
amplifier or non-inverting amplifier with a gain larger than 2.5 (5V
operation), where the common mode voltage does not make excur-
sions above this switching point. The user should however, be
aware that this switching does take place if the operational amplifier
is connected as a unity gain buffer, and should make provision in his
design to allow for input offset voltage variations.
5. TheALD1701operationalamplifierhasbeendesignedtoprovidefull
static discharge protection. Internally, the design has been carefully
implementedtominimizelatchup. However, caremustbeexercised
when handling the device to avoid strong static fields that may
degrade a diode junction, causing increased input leakage currents.
In using the operational amplifier, the user is advised to power up the
circuit before, or simultaneously with any input voltages applied, and
to limit input voltages not to exceed 0.3V of the power supply voltage
levels.
6. The ALD1701, with its micropower operation, offers numerous
benefits in reduced power supply requirements, less noise coupling
and current spikes, less thermally induced drift, better overall reli-
ability due to lower self heating, and lower input bias current. It
requires practically no warm up time as the chip junction heats up to
only 0.1°C above ambient temperature under most operating condi-
tions.
3. The input bias and offset currents are essentially input protection
diode reverse bias leakage currents, and are typically less than 1pA
at room temperature. This low input bias current assures that the
TYPICAL PERFORMANCE CHARACTERISTICS
COMMON MODE INPUT VOLTAGE RANGE
AS A FUNCTION OF SUPPLY VOLTAGE
SUPPLY CURRENT AS A FUNCTION
OF SUPPLY VOLTAGE
±7
±6
±500
+25°C
INPUTS GROUNDED
OUTPUT UNLOADED
-25°C
±400
±300
±200
±100
0
T
= 25°C
A
±5
±4
T
= -55°C
A
±3
±2
±1
0
+70°C
+125°C
0
±1
±2
±3
±4
±5
±6
±7
0
±1
±2
±3
±4
±5
±6
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
OPEN LOOP VOLTAGE GAIN AS A
FUNCTION OF LOAD RESISTANCE
INPUT BIAS CURRENT AS A FUNCTION
OF AMBIENT TEMPERATURE
1000
100
10
10000
1000
V
= ±2.5V
S
100
10
1.0
0.1
V
T
= ±2.5V
= 25°C
S
A
1
10K
100K
1M
10M
-50 -25
0
25
50
75
100
125
LOAD RESISTANCE (Ω)
AMBIENT TEMPERATURE (°C)
ALD1701A/ALD1701B
ALD1701/ALD1701G
Advanced Linear Devices
4
TYPICAL PERFORMANCE CHARACTERISTICS
OPEN LOOP VOLTAGE GAIN AS A FUNCTION
OF SUPPLY VOLTAGE AND TEMPERATURE
OUTPUT VOLTAGE SWING AS A FUNCTION
OF SUPPLY VOLTAGE
1000
±6
±25°C ≤ T ≤ +125°C
A
±5
±4
R
= 100KΩ
L
100
±3
10
1
±2
±1
±55°C ≤ T ≤ +125°C
A
R
= 100KΩ
L
0
0
±2
±4
±6
±8
±1
±2
±3
±4
±5
±6
±7
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
INPUT OFFSET VOLTAGE AS A FUNCTION
OF AMBIENT TEMPERATURE
OPEN LOOP VOLTAGE GAIN AS A FUNCTION
OF FREQUENCY
REPRESENTATIVE UNITS
120
100
80
+5
+4
V
S
= ±2.5V
V
T
= ±2.5V
= 25°C
S
A
+3
+2
+1
0
0
60
40
45
-1
-2
90
135
180
20
0
-3
-4
-20
-5
-50
-25
0
+25
+50
+75
+100 +125
1
10
100
1K
10K 100K
1M
10M
AMBIENT TEMPERATURE (°C)
FREQUENCY (Hz)
INPUT OFFSET VOLTAGE AS A FUNCTION
OF COMMON MODE INPUT VOLTAGE
LARGE - SIGNAL TRANSIENT
RESPONSE
15
V
T
= ±2.5V
= 25°C
2V/div
V
T
= ±1.0V
= 25°C
S
A
S
A
10
R
C
= 100KΩ
= 50pF
L
L
5
0
-5
-10
-15
500mV/div
5µs/div
-2
-1
0
+1
+2
+3
COMMON MODE INPUT VOLTAGE (V)
LARGE - SIGNAL TRANSIENT
RESPONSE
SMALL - SIGNAL TRANSIENT
RESPONSE
5V/div
V
T
R
= ±2.5V
= 25°C
= 100KΩ
= 50pF
100mV/div
V
T
R
= ±2.5V
S
S
A
L
L
= 25°C
A
= 100KΩ
= 50pF
L
L
C
C
2V/div
5µs/div
20mV/div
2µs/div
ALD1701A/ALD1701B
ALD1701/ALD1701G
Advanced Linear Devices
5
TYPICAL APPLICATIONS
RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER
RAIL-TO-RAIL WAVEFORM
+5V
0V
5V
~
12
INPUT
Z
= 10
Ω
IN
0.1µF
-
+5V
0V
OUTPUT
OUTPUT
V
+
IN
0≤ V ≤ 5V
IN
Performance waveforms.
Upper trace is the output of a
Wien Bridge Oscillator. Lower
trace is the output of Rail-to-rail
voltage follower.
* See Rail to Rail Waveform
PHOTO DETECTOR CURRENT TO
VOLTAGE CONVERTER
HIGH INPUT IMPEDANCE RAIL-TO-RAIL
PRECISION DC SUMMING AMPLIFIER
R
F
= 5M
+2.5V
10M
V
1
+
I
0.1µF
V
2
V
OUT
1 X R
=
F
+2.5V
10M
V
OUT
-
10M
PHOTODIODE
0.1µF
-
10M
V
V- ≤ V ≤ V+
IN
3
4
R
L
= 100K
+
- 2.5V
-2.5V
V
V- ≤ V
≤ V+
OUT
10M
10M
= 10MΩ Accuracy limited by resistor tolerances and input offset voltage
V
= V + V - V - V
1 2 3 4
OUT
R
IN
WIEN BRIDGE OSCILLATOR (RAIL-TO-RAIL)
SINE WAVE GENERATOR
RAIL-TO-RAIL VOLTAGE COMPARATOR
+5V
+2.5V
-
V
IN
0.1µF
OUTPUT
-
+5V
+
10K
-2.5V
10K
OUTPUT
+
50K
.01µF
C = .01µF
10K
R = 10K
10M
1
~
f =
~ 1.6KHz
2πR
C
* See Rail to Rail Waveform
LOW VOLTAGE INSTRUMENTATION AMPLIFIER
V+
0.1µF
1M
+
100K
500K
V+
-
-
100K
0.1µF
V-
0.1µF
0.1µF
f max = 20KHz
V
OUT
50K
V+ 1M
100K
-40mV ≤ V ≤ 40mV
IN
+
V+
-
0.1µF
V-
V-
1M
100K
1M
+
GAIN = 25 V- ≤ V
≤ V+. All resistors are 1%.
OUT
V+ = +1.0V, V- = -1.0V. Short circuit input current 1µA.
0.1µF
V-
ALD1701A/ALD1701B
ALD1701/ALD1701G
Advanced Linear Devices
6
相关型号：
©2020 ICPDF网 联系我们和版权申明