ALD4701BSB [ALD]
QUAD MICOPOWER RAIL TO RAIL CMOS OPERATIOANAL AMPLIFIER; QUAD MICOPOWER轨至轨CMOS放大器OPERATIOANAL
| 型号： | ALD4701BSB |
| 厂家： | 
ADVANCED LINEAR DEVICES |
| 描述： | QUAD MICOPOWER RAIL TO RAIL CMOS OPERATIOANAL AMPLIFIER |
| 文件： | 总6页 (文件大小：50K) |
| 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.
ALD4701A/ALD4701B
ALD4701
QUAD MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER
GENERAL DESCRIPTION
FEATURES
The ALD4701 is a quad monolithic CMOS micropower high slew rate
operational 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
singlesupplyor ±2.5Vdualsupplysystems. Totalsupplycurrentforallfour
operational amplifiers is 1mA maximum at 5V supply voltage. It is
manufactured with Advanced Linear Devices' enhanced 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
• Unity gain stable
• Extremely low input bias currents -- 1.0pA
• High source impedance applications
• Dual power supply ±1.0V to ±6.0V
• Single power supply +2V to +12V
• High voltage gain
The ALD4701 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 LM324 types and ICL 7641 types.
• Output short circuit protected
• Unity gain bandwidth of 0.7MHz
• Slew rate of 0.7V/µs
• Low power dissipation
• Symmetrical output drive
The ALD4701 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 these voltages.
APPLICATIONS
First, eachoperationalamplifiercanoperatewithrailtorailinputandoutput
voltages. This means the signal input voltage and output voltage can be
equal to or near to the positive and negative supply voltages. This feature
allows numerous analog serial stages and flexibility in input signal bias
levels. Secondly, each device was designed to accommodate mixed
applications where digital and analog circuits may operate off the same
power supply or battery. Thirdly, the output stage can typically drive up to
50pF capacitive and 10KΩ resistive loads.
• Voltage follower/buffer/amplifier
• Charge integrator
• Photodiode amplifier
• Data acquisition systems
• High performance portable instruments
• Signal conditioning circuits
• Sensor and transducer amplifiers
• Low leakage amplifiers
• Active filters
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, lowpowerdissipationof5mW, lowoffsetvoltageandtemperature
drift,maketheALD4701aversatile,micropowerquadoperationalamplifier.
• Sample/Hold amplifier
• Picoammeter
• Current to voltage converter
TheALD4701,designedandfabricatedwithsilicongateCMOStechnology,
offers 1pA typical input bias current. Due to low voltage and low power
operation, reliability and operating characteristics, such as input bias
currents and warm up time, are greatly improved.
PIN CONFIGURATION
OUT
1
2
14
13
OUT
IN -
A
D
IN -
A
D
ORDERING INFORMATION
Operating Temperature Range*
IN +
IN +
12
11
10
9
3
4
D
A
+
-
V
V
-55°C to +125°C
0°C to +70°C
0°C to +70°C
14-Pin
14-Pin
14-Pin
5
6
7
IN +
IN -
IN +
IN -
B
B
B
C
CERDIP
Package
Small Outline
Package (SOIC)
Plastic Dip
Package
C
ALD4701A DB
ALD4701B DB
ALD4701 DB
ALD4701A SB
ALD4701B SB
ALD4701 SB
ALD4701A PB
ALD4701B PB
ALD4701 PB
OUT
8
OUT
C
DB, PB, SB PACKAGE
* Contact factory for industrial temperature range
© 1998 Advanced Linear Devices, Inc. 415Tasman Drive, Sunnyvale, California 94089 -1706Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
ABSOLUTE MAXIMUM RATINGS
+
Supply voltage, V
13.2V
-0.3V to V +0.3V
600 mW
+
Differential input voltage range
Power dissipation
Operating temperature range PB,SB package
DB package
Storage temperature range
Lead temperature, 10 seconds
0°C to +70°C
-55°C to +125°C
-65°C to +150°C
+260°C
OPERATING ELECTRICAL CHARACTERISTICS
+
T
A
= 25°C V = 5.0V ( V = ±2.5V in dual supply operation ) unless otherwise specified
S
4701A
4701B
4701
Test
Parameter
Symbol
Min Typ
Max Min Typ Max
Min Typ Max
Unit
Conditions
Supply
Voltage
V
V
±1.0
2.0
±6.0 ±1.0
±6.0 ±1.0
12.0 2.0
±6.0
12.0
V
V
Dual Supply
Single Supply
S
+
12.0
2.0
Input Offset
Voltage
V
2.0
2.8
5.0
5.8
10.0
11.0
mV
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
pA
pA
T = 25°C
A
OS
0°C ≤ T ≤ +70°C
A
Input Bias
Current
I
B
30
300
30
300
30
300
pA
pA
T = 25°C
A
0°C ≤ T ≤ +70°C
A
+
Input Voltage
Range
V
-0.3
-2.8
5.3 -0.3
2.8 -2.8
5.3 -0.3
2.8 -2.8
5.3
2.8
V
V
V
V
= +5V
= ±2.5V
IR
S
12
12
12
Input
R
10
10
10
Ω
IN
Resistance
Input Offset
Voltage Drift
TCV
OS
5
5
7
µV/°C
R
R
≤ 100KΩ
≤ 100KΩ
S
S
Power Supply
Rejection Ratio
PSRR
CMRR
65
65
80
80
65
65
80
80
60
60
80
80
dB
dB
0°C ≤ T ≤ +70°C
A
Common Mode
Rejection Ratio
65
65
83
83
65
65
83
83
60
60
83
83
dB
dB
R ≤ 100KΩ
S
0°C ≤ T ≤ +70°C
A
Large Signal
Voltage Gain
A
15
10
100
300
15
10
100
300
10
7
80
300
V/mV R = 100KΩ
L
V
V/mV
R ≥ 1MΩ
L
V/mV R = 100KΩ
L
0°C ≤ T ≤ +70°C
A
+
R = 1MΩ V = 5V
L
Output
Voltage
Range
V
V
low
high
0.001 0.01
4.99 4.999
0.001 0.01
4.99 4.999
0.001 0.01
4.99 4.999
V
V
O
O
0°C ≤ T ≤ +70°C
A
V
V
low
high
-2.48 -2.40
2.48
-2.48 -2.40
2.40 2.48
-2.48 -2.40
2.40 2.48
V
V
R = 100KΩ V = ±2.5V
L S
O
O
2.40
0°C ≤ T ≤ +70°C
A
Output Short
I
1
1
1
mA
SC
Circuit Current
Supply
Current
I
S
480 1000
480 1000
480 1000
µA
V
= 0V
IN
No Load
Power
P
5.0
5.0
5.0
mW
All amplifiers
D
Dissipation
V = ±2.5V
S
ALD4701A/ALD4701B
ALD4701
Advanced Linear Devices
2
OPERATING ELECTRICAL CHARACTERISTICS (cont'd)
= 25°C V = ±2.5V unless otherwise specified
T
A
S
4701A
4701B
4701
Test
Parameter
Symbol Min
Typ Max Min Typ Max Min Typ
Max Unit
Conditions
Input
C
1
1
1
pF
IN
Capacitance
Bandwidth
Slew Rate
B
S
700
0.7
700
0.7
700
0.7
KHz
W
R
V/µs
A = +1
V
R = 100KΩ
L
Rise time
t
r
0.2
20
0.2
20
0.2
20
µs
R = 100KΩ
L
Overshoot
Factor
%
R = 100KΩ
L
C = 50pF
L
Settling
Time
t
10.0
120
10.0
120
10.0
120
µs
0.1% A = -1
V
s
C = 50pF R = 100KΩ
L
L
Channel
C
dB
A
= 100
S
V
Separation
T
A
= 25°C V = ±5.0V unless otherwise specified
S
4701A
4701B
4701
Test
Parameter
Symbol Min
Typ Max Min Typ Max Min Typ
Max Unit
Conditions
Power Supply
Rejection Ratio
PSRR
83
83
83
dB
R
R
≤ 100KΩ
S
S
Common Mode
Rejection Ratio
CMRR
83
83
83
dB
≤ 100KΩ
Large Signal
Voltage Gain
A
250
250
250
V/mV
R
R
= 100KΩ
= 100KΩ
V
L
L
Output Voltage
Range
V
V
low
-4.98 -4.90
4.98
-4.98 -4.90
-4.98 -4.90
V
V
O
O
high 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
MHz
W
R
V/µs
A
= +1
V
C
= 50pF
L
V = ±2.5V -55°C ≤ T ≤ +125°C unless otherwise specified
S
A
4701A DB
4701B DB
4701 DB
Test
Conditions
R ≤ 100KΩ
S
Parameter
Input Offset
Voltage
Symbol Min
Typ Max Min Typ Max Min Typ
Max Unit
V
3.0
6.0
15.0 mV
OS
Input Offset
Current
I
I
8.0
8.0
8.0 nA
OS
Input Bias
Current
10.0
10.0
10.0 nA
B
Power Supply
Rejection Ratio
PSRR
CMRR
60
60
10
75
83
50
60
60
10
75
83
50
60
60
7
75
83
50
dB
dB
R
≤ 100KΩ
≤ 100KΩ
= 100KΩ
S
Common Mode
Rejection Ratio
R
S
Large Signal
Voltage Gain
A
V/mV
R
L
V
Output Voltage
Range
V
V
low
-2.47 -2.40
-2.47 -2.40
2.35 2.45
-2.47
2.35 2.45
-2.40
V
V
O
O
high 2.35 2.45
R
L
= 100KΩ
ALD4701A/ALD4701B
ALD4701
Advanced Linear Devices
3
Design & Operating Notes:
1. The ALD4701 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
voltageoperationasisrequiredfromastandaloneCMOSoperational
amplifier. The ALD4701 is internally compensated for unity gain
stabilityusinganovelschemethatdoesnotuseanullingresistor. 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.
at room temperature. This low input bias current assures that the
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. The output stage consists of class AB complementary output drivers,
capable of driving a low resistance load. The output voltage swing is
limitedbythedraintosourceon-resistanceoftheoutputtransistorsas
determined by the bias circuitry, and the value of the load resistor.
When connected in the voltage follower configuration, the oscillation
resistantfeature,combinedwiththerailtorailinputandoutputfeature,
makes an effective analog signal buffer for medium to high source
impedance sensors, transducers, and other circuit networks.
2. The ALD4701 has complementary p-channel and n-channel input
differential stages connected in parallel to accomplish rail-to-rail input
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 compat-
ibility 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 ALD4701 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. The ALD4701 operational amplifier has been designed to provide full
static discharge protection. Internally, the design has been carefully
implemented to minimize latch up. However, care must be exercised
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 ALD4701, with its micropower operation, offers numerous ben-
efits in reduced power supply requirements, less noise coupling and
currentspikes,lessthermallyinduceddrift,betteroverallreliabilitydue
to lower self heating, and lower input bias current. It requires
practically no warm up time as the chip junction heats up to only 0.4°C
above ambient temperature under most operating conditions.
3. The input bias and offset currents are essentially input protection
diode reverse bias leakage currents, and are typically less than 1pA
TYPICAL PERFORMANCE CHARACTERISTICS
SUPPLY CURRENT AS A FUNCTION
OF SUPPLY VOLTAGE
OPEN LOOP VOLTAGE GAIN AS A
FUNCTION OF LOAD RESISTANCE
1000
100
10
+25°C
INPUTS GROUNDED
OUTPUT UNLOADED
-25°C
1600
1200
800
400
0
T
= -55°C
A
+70°C
+125°C
V
T
= ±2.5V
= 25°C
S
A
1
10K
100K
1M
10M
0
±1
±2
±3
±4
±5
±6
LOAD RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
INPUT BIAS CURRENT AS A FUNCTION
OF AMBIENT TEMPERATURE
COMMON MODE INPUT VOLTAGE RANGE
AS A FUNCTION OF SUPPLY VOLTAGE
10000
±7
±6
T
= 25°C
A
V
= ±2.5V
1000
100
S
±5
±4
10
±3
±2
±1
0
1.0
0.1
-50 -25
0
25
50
75
100
125
0
±1
±2
±3
±4
±5
±6
±7
AMBIENT TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
ALD4701A/ALD4701B
ALD4701
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
-55°C ≤ T ≤ +125°C
A
±5
±4
R
L
= 100KΩ
100
±3
10
1
±2
±1
-55°C ≤ T ≤ +125°C
A
R
= 100KΩ
L
0
±1
±2
±3
±4
±5
±6
±7
0
±2
±4
±6
±8
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
+5
+4
V
S
= ±2.5V
V
T
= ±2.5V
= 25°C
S
A
100
80
+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
FREQUENCY (Hz)
AMBIENT TEMPERATURE (°C)
INPUT OFFSET VOLTAGE AS A FUNCTION
OF COMMON MODE INPUT VOLTAGE
LARGE - SIGNAL TRANSIENT
RESPONSE
15
V
T
= ±2.5V
= 25°C
S
A
2V/div
V
= ±1.0V
= 25°C
S
10
T
A
R
L
C
L
= 100KΩ
= 50pF
5
0
-5
-10
-15
500mV/div
5µs/div
-2
-1
0
+1
+2
+3
COMMON MODE INPUT VOLTAGE (V)
SMALL - SIGNAL TRANSIENT
RESPONSE
LARGE - SIGNAL TRANSIENT
RESPONSE
100mV/div
V
T
R
C
= ±2.5V
= 25°C
= 100KΩ
= 50pF
S
A
L
L
5V/div
V
= ±2.5V
= 25°C
= 100KΩ
= 50pF
S
T
A
R
C
L
L
20mV/div
2µs/div
2V/div
5µs/div
ALD4701A/ALD4701B
ALD4701
Advanced Linear Devices
5
TYPICAL APPLICATIONS
RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER
TRANSCONDUCTANCE AMPLIFIER
+5V
+
-
V
IN
5V
~
12
Z
= 10
Ω
IN
V
OUT
12
10
0.1µF
R
IN =
Ω
-
R
L
I
OUT
V
OUT
V
+
IN
1/4 ALD4701
R
L
= R
V
IN
V
OUT
2
1/4 ALD4701
R
2
0≤ V ≤ 5V
IN
I
= V
IN
Min Max Min Max
0.0 2.00 0.0 4.00
0.0 2.45 0.0 4.90
OUT
1K
10K
R
2
HIGH INPUT IMPEDANCE RAIL-TO-RAIL PRECISION
DC SUMMING AMPLIFIER
PHOTO DETECTOR CURRENT TO
VOLTAGE CONVERTER
R
F
= 5M
V+ = +2.5V
10M
V
1
I
+
-
1/4 ALD4701
0.1µF
V
1 X R
F
+2.5V
OUT
=
V
2
-
10M
10M
V
OUT
PHOTODIODE
10M
0.1µF
R
L
= 100K
+
V
V- ≤ V ≤ V+
IN
3
4
-2.5V
1/4 ALD4701
V
V- ≤ V
≤ V+
OUT
V- = - 2.5V
10M
10M
V
= V + V - V - V
1 2 3 4
OUT
R
IN
= 10MΩ Accuracy limited by resistor tolerances and input offset voltage
WIEN BRIDGE OSCILLATOR (RAIL-TO-RAIL)
SINE WAVE GENERATOR
RAIL-TO-RAIL WINDOW COMPARATOR
+5V
1/4 ALD4701
8
V
3
2
REF (HIGH)
+5V
-
+
-
100K
1/4 74 C00
1
7
V
OUT
1/4 ALD4701
+
10K
V
-5V
OUT
V
IN
5
6
+
-
10K
.01µF
C = .01µF
V
REF (LOW)
10K
R = 10K
4
100K
1/4 ALD4701
~
~
= 1.6KHZ
f =
1
2πRC
V
for V
< V < V
IN
OUT (LOW)
REF (LOW)
REF (HIGH)
FUNCTION GENERATOR
0.1µF
100K
220K
100K
+2.5V
4
54K
2
3
-
0.002µF
0.002µF
10K
.01µF
1
6
5
-
100K
-
7
+
9
11
27K
8
13
12
-
+
-2.5V
14
+
10
100K
VOUT
+
10K
27K
100K
Square
Square Wave
TrianTgrlieanWglaeve
Sine Wave
Wave
1/4 ALD4701
Wave
27K
-2X GAIN
1/4 ALD4701
1/4 ALD4701
1/4 ALD4701
ALD4701A/ALD4701B
ALD4701
Advanced Linear Devices
6
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