ALD4702_10 [ALD]
QUAD 5V RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER; QUAD 5V轨到轨精密运算放大器
| 型号： | ALD4702_10 |
| 厂家： | 
ADVANCED LINEAR DEVICES |
| 描述： | QUAD 5V RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER |
| 文件： | 总9页 (文件大小：82K) |
| 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.
ALD4702A/ALD4702B
ALD4702
QUAD 5V RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER
GENERAL DESCRIPTION
FEATURES
The ALD4702A/ALD4702B/ALD4702 is a quad monolithic precision
CMOS rail-to-rail operational amplifier intended for a broad range of
analogapplicationsusing±2.5Vto±5Vdualpowersupplysystems, as
wellas+4Vto+10Vbatteryoperatedsystems. Alldevicecharacteristics
arespecifiedfor+5Vsinglesupplyor±2.5Vdualsupplysystems. Total
supply current for four operational amplifiers is 6mA maximum at 5V
supply voltage. It is manufactured with Advanced Linear Devices'
enhanced ACMOS silicon gate CMOS process.
• Rail-to-rail input and output voltage ranges
• Symmetrical push-pull class AB output drivers
• All parameters specified for +5V single supply
or ±2.5V dual supply systems
• Inputscanextendbeyondsupplyrailsby300mV
• Outputs settle to 2mV of supply rails
• High load capacitance capability up to 4000pF
• No frequency compensation required --
unity gain stable
TheALD4702A/ALD4702B/ALD4702isdesignedtoofferatrade-offof
performance parameters providing a wide range of desired
specifications. It has been developed specifically with the +5V single
supply or ±2.5V dual supply user andoffers the popular industry pin
configuration of LM324 and ICL7641 types.
• Extremely low input bias currents --
1.0pA typical
• Ideal for high source impedance applications
• Dual power supply ±2.5V to ±5.0V operation
• Single power supply +5V to +10V operation
• High voltage gain-typically 85V/mV @ ±2.5V
and 250V/mV @ ±5.0V
• Drive as low as 2KΩ load with 5mA drive current
• Output short circuit protected
• Unity gain bandwidth of 1.5MHz
• Slew rate of 1.9V/µs
• Low power dissipation
Severalimportantcharacteristicsofthedevicemakemanyapplications
easy to implement for these supply voltages. First, the operational
amplifier can operate with rail to rail input and output voltages. This
feature allows numerous analog serial stages to be implemented
without losing operating voltage margin. Second, the device was
designed to accommodate mixed applications where digital and
analog circuits may work off the same 5V power supply. Third, the
output stage can drive up to 400pF capacitive and 5KΩ resistive loads
in non-inverting unity gain connection and double the capacitance in
the inverting unity gain mode.
• Suitable for rugged, temperature-extreme
environments
APPLICATIONS
• Voltage amplifier
• Voltage follower/buffer
• Charge integrator
• Photodiode amplifier
• Data acquisition systems
• High performance portable instruments
• Signal conditioning circuits
• Sensor and transducer amplifiers
• Low leakage amplifiers
• Active filters
• Sample/Hold amplifier
• Picoammeter
• Current to voltage convert
• Coaxial cable driver
These features, coupled with extremely low input currents, high
voltage gain, useful bandwidth of 1.5MHz, a slew rate of 2.1V/µs, low
power dissipation, low offset voltage and temperature drift, make the
ALD4702A/ALD4702B/ALD4702 a truly versatile, user friendly,
operational amplifier.
The ALD4702A/ALD4702B/ALD4702 is designed and fabricated with
silicon gate CMOS technology, and offers 1pA typical input bias
current. On-chip offset voltage trimming allows the device to be used
without nulling in most applications. The device offers typical offset
drift of less than 7µV/°C which eliminates many trim or temperature
compensation circuits. For precision applications, the ALD4702A/
ALD4702B/ALD4702isdesignedtosettleto0.01%in8µs. Additionally,
robust design and rigorous screening make this device especially
suitableforoperationintemperature-extremeenvironmentsandrugged
conditions.
PIN CONFIGURATION
1
2
3
OUT
-IN
14 OUT
A
A
A
D
ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS))
13 -IN
D
Operating Temperature Range
0°C to +70°C
0°C to +70°C
-55°C to 125°C
+IN
12
+IN
D
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
14-Pin
CERDIP
Package
+
B
B
B
V
V-
4
5
11
10
+IN
+IN
-IN
C
ALD4702ASBL
ALD4702BSBL
ALD4702SBL
ALD4702APBL
ALD4702BPBL
ALD4702PBL
ALD4702ADB
ALD4702BDB
ALD4702DB
6
7
9
8
-IN
C
OUT
OUT
C
* Contact factory for leaded (non-RoHS) or high temperature versions.
TOP VIEW
SBL, PBL, DB PACKAGES
Rev 2.0 ©2010 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286
www.aldinc.com
ABSOLUTE MAXIMUM RATINGS
+
-
-
+
Supply voltage, V referenced to V
-0.3V to V +10.6V
Supply voltage, V referenced to V
±5.3V
S
+
Differential input voltage range
Power dissipation
Operating tempurature range SBL, PBL packages
-0.3V to V +0.3V
600 mW
0°C to +70°C
-55°C to +125°C
-65°C to +150°C
+260°C
DB package
Storage tempurature range
Lead tempurature, 10 seconds
CAUTION: ESD Sensitive Device. Use static control procedures in ESD controlled environment.
OPERATING ELECTRICAL CHARACTERISTICS
T
= 25°C V = ±2.5V unless otherwise specified
A
S
4702A
4702B
4702
Test
Parameter
Symbol
Min Typ
Max Min Typ Max
Min Typ Max
Unit
Conditions
Supply
Voltage
V
V
±2.0
4.0
±5.0 ±2.0
±5.0 ±2.0
10.0 4.0
±5.0
10.0
V
V
Dual Supply
Single Supply
S
+
10.0
4.0
Input Offset
Voltage
V
1.0
2.0
2.0
3.5
5.0
6.5
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
30
300
30
300
30
300
pA
pA
T = 25°C
A
B
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
7
7
7
µV/°C
R
R
≤ 100KΩ
≤ 100KΩ
OS
S
Power Supply
Rejection Ratio
PSRR
CMRR
65
65
83
83
65
65
83
83
60
60
83
83
dB
S
0°C ≤ T ≤ +70°C
A
Common Mode
Rejection Ratio
65
65
83
83
65
65
83
83
60
60
83
83
dB
R ≤ 100KΩ
S
0°C ≤ T ≤ +70°C
A
Large Signal
Voltage Gain
A
V
15
28
100
15
28
100
12
28
100
V/mV
V/mV
R
L
R
L
= 10KΩ
≥ 1MΩ
Output
Voltage
Range
V
V
low
high
0.002 0.01
4.99 4.998
0.002 0.01
4.99 4.998
0.002 0.01
4.99 4.998
R
= 1MΩ Single supply
O
O
L
V
0°C ≤ T ≤ +70°C
A
V
V
low
high
-2.44 -2.40
2.44
-2.44 -2.40
2.44
-2.44 -2.40
2.40 2.44
V
V
R = 10KΩ Dual supply
L
O
O
2.40
2.40
0°C ≤ T ≤ +70°C
A
Output Short
I
8
8
8
mA
SC
Circuit Current
Supply
Current
I
4.0
20
1
6.0
30
4.0
20
1
6.0
30
4.0
20
1
6.0
30
mA
mW
pF
V
= 0V No Load
IN
S
Power
Dissipation
P
Both amplifiers
V
D
= ±2.5V
S
Input
C
IN
Capacitance
Bandwidth
Slew Rate
Rise time
B
S
0.7
1.1
1.5
1.9
0.2
10
0.7
1.1
1.5
1.9
0.2
10
0.7
1.1
1.5
1.9
0.2
10
MHz
V/µs
µs
W
R
A
= +1 R = 10KΩ
V
L
t
R = 10KΩ
L
r
Overshoot
Factor
%
R = 10KΩ C = 100pF
L L
ALD4702A/ALD4702B
ALD4702
Advanced Linear Devices
2 of 9
OPERATING ELECTRICAL CHARACTERISTICS (cont'd)
= 25°C V = ±2.5V unless otherwise specified
T
A
S
4702A
4702B
4702
Parameter
Symbol Min
Typ Max Min Typ Max Min Typ
Max
Unit
Test Conditions
Maximum Load
Capacitance
C
400
4000
400
4000
400
4000
pF
pF
Gain = 1
Gain = 5
L
Input Noise
Voltage
e
26
26
26
nV/√HZ
fA/√HZ
f = 1KHZ
n
Input Current
Noise
i
0.6
0.6
0.6
f = 10HZ
0.01%
n
Settling
Time
t
s
8.0
3.0
8.0
3.0
8.0
3.0
µs
µs
0.1% A = -1
V
R = 5KΩ C = 50pF
L
L
T
= 25°C V = ±5.0V unless otherwise specified
S
A
4702A
4702B
4702
Parameter
Symbol Min
Typ Max Min Typ Max Min Typ
Max Unit
Test Conditions
Power Supply
Rejection Ratio
PSRR
83
83
83
83
dB
R
≤ 100KΩ
S
Common Mode
Rejection Ratio
CMRR
83
83
dB
R
S
≤ 100KΩ
Large Signal
Voltage Gain
A
250
250
250
V/mV
R
R
= 10KΩ
= 10KΩ
V
L
Output Voltage
Range
V
V
low
high
-4.90
4.93
-4.8
-4.90 -4.8
4.8 4.93
-4.90
4.8 4.93
-4.8
V
O
O
L
4.8
Bandwidth
Slew Rate
B
S
1.7
2.8
1.7
2.8
1.7
2.8
MH
Z
W
R
V/µs
A
=+1
V
C
L
=50pF
V = +5.0V -55°C ≤ T ≤ +125°C unless otherwise specified
S
A
4702ADA
4702BDA
4702DA
Parameter
Symbol Min
Typ Max Min Typ Max Min Typ
Max Unit
Test Conditions
Input Offset
Voltage
V
2.0
4.0
7.0 mV
R
S
≤ 100KΩ
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
75
83
60
60
75
83
60
60
75
83
dB
dB
R
R
≤ 100KΩ
≤ 100KΩ
S
S
Common Mode
Rejection Ratio
Large Signal
Voltage Gain
A
10
25
10
25
7
25
V/mV
R
R
≤ 10KΩ
≤ 10KΩ
V
L
Output Voltage
Range
V
V
low
high
0.1
4.9
0.2
0.1
4.9
0.2
0.1
4.9
0.2
V
O
O
L
4.8
4.8
4.8
ALD4702A/ALD4702B
ALD4702
Advanced Linear Devices
3 of 9
Design & Operating Notes:
1. TheALD4702A/ALD4702B/ALD4702CMOSoperationalamplifieruses
a 3 gain stage architecture and an improved frequency compensation
scheme to achieve large voltage gain, high output driving capability,
and better frequency stability. The ALD4702A/ALD4702B/ALD4702 is
internally compensated for unity gain stability using a novel scheme.
This design produces a clean single pole roll off in the gain character-
istics while providing for more than 70 degrees of phase margin at the
unity gain frequency. A unity gain buffer using the ALD4702A/
ALD4702B/ALD4702 will typically drive 400pF of external load capaci-
tance without stability problems. In the inverting unity gain configura-
tion, it can drive up to 800pF of load capacitance. Compared to other
CMOS operational amplifiers, the ALD4702A/ALD4702B/ALD4702 is
much more resistant to parasitic oscillations.
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 analog signal from the source will not be distorted by input bias
currents. 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 limited by the drain to source on-resistance of the
outputtransistorsasdeterminedbythebiascircuitry, andthevalue
of the load resistor when connected. In the voltage follower
configuration, the oscillation resistant feature, combined with the
railtorailinputandoutputfeature,makestheALD4702A/ALD4702B/
ALD4702 an effective analog signal buffer for medium to high
source impedance sensors, transducers, and other circuit net-
works.
2. The ALD4702A/ALD4702B/ALD4702 has complementary p-channel
and n-channel input differential stages connected in parallel to accom-
plish rail-to-rail input common mode voltage range. With the common
mode input voltage close to the power supplies, one of the two
differential stages is switched off internally. To maintain compatibility
withotheroperationalamplifiers,thisswitchingpointhasbeenselected
to be about 1.5V above the negative supply voltage. As offset voltage
trimming on the ALD4702A/ALD4702B/ALD4702 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
invertingamplifierornon-invertingamplifierwithagaingreaterthan2.5
(5V operation), where the common mode voltage does not make
excursions below this switching point.
5. The ALD4702A/ALD4702B/ALD4702 operational amplifier has
been designed with static discharge protection. Internally, the
design has been carefully implemented to minimize latch up.
However, care must be exercised when handling the device to
avoidstrongstaticfields.Inusingtheoperationalamplifier,theuser
is advised to power up the circuit before, or simultaneously with,
any input voltages applied and to limit input voltages to not exceed
0.3V of the power supply voltage levels. Alternatively, a 100KΩ or
higher value resistor at the input terminals will limit input currents
to acceptable levels while causing very small or negligible accu-
racy effects.
TYPICAL PERFORMANCE CHARACTERISTICS
OPEN LOOP VOLTAGE GAIN AS A FUNCTION
OF SUPPLY VOLTAGE AND TEMPERATURE
COMMON MODE INPUT VOLTAGE RANGE
AS A FUNCTION OF SUPPLY VOLTAGE
1000
±7
}
}
-55°C
+25°C
T
A
= 25°C
±6
±5
±4
100
}
+125°C
±3
±2
±1
0
10
1
R = 10KΩ
L
R = 5KΩ
L
0
±2
±4
SUPPLY VOLTAGE (V)
±6
±8
0
±1
±2
±3
±4
±5
±6
±7
SUPPLY VOLTAGE (V)
INPUT BIAS CURRENT AS A FUNCTION
OF AMBIENT TEMPERATURE
SUPPLY CURRENT AS A FUNCTION
OF SUPPLY VOLTAGE
12
10
8
10000
1000
INPUTS GROUNDED
OUTPUTS UNLOADED
V
S
=
± 2.5V
100
10
T
A
= -55°C
6
-25°C
+25°C
4
+80°C
+125°C
1.0
0.1
2
0
-50 -25
0
25
50
75
100
125
±1
±2
±3
±4
±5
±6
AMBIENT TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
ALD4702A/ALD4702B
ALD4702
Advanced Linear Devices
4 of 9
TYPICAL PERFORMANCE CHARACTERISTICS (cont'd)
OPEN LOOP VOLTAGE GAIN AS
A FUNCTION OF FREQUENCY
OUTPUT VOLTAGE SWING AS A
FUNCTION OF SUPPLY VOLTAGE
120
100
80
±7
±6
V
T
= ±2.5V
= 25°C
S
-55°C ≤ T ≤ 125°C
A
A
L
0
±5
60
40
R
= 10KΩ
45
±4
±3
±2
R
L
= 2KΩ
90
135
180
20
0
-20
1
10
100
1K
10K 100K
1M
10M
±4
SUPPLY VOLTAGE (V)
0
±1
±2
±3
±5
±6
±7
FREQUENCY (Hz)
INPUT OFFSET VOLTAGE AS A FUNCTION
OF AMBIENT TEMPERATURE
INPUT OFFSET VOLTAGE AS A FUNCTION
OF COMMON MODE INPUT VOLTAGE
15
REPRESENTATIVE UNITS
+5
V
T
= ±2.5V
= 25°C
S
A
10
+4
+3
+2
V
= ±2.5V
S
5
+1
0
0
-5
-1
-2
-10
-15
-3
-4
-5
-2
-1
0
+1
+2
+3
-50
-25
0
+25
+50
+75
+100 +125
COMMON MODE INPUT VOLTAGE (V)
AMBIENT TEMPERATURE (°C)
VOLTAGE NOISE DENSITY AS A
FUNCTION OF FREQUENCY
OPEN LOOP VOLTAGE GAIN AS A
FUNCTION OF LOAD RESISTANCE
150
125
1000
V
= ±2.5V
= 25°C
S
A
T
V
S
A
= ±2.5V
100
75
T
= 25°C
100
10
50
25
0
1
10
100
1K
10K
100K
1000K
1K
10K
LOAD RESISTANCE (Ω)
1000K
100K
FREQUENCY (Hz)
SMALL - SIGNAL TRANSIENT
RESPONSE
LARGE - SIGNAL TRANSIENT
RESPONSE
V
T
R
C
= ±2.5V
= 25°C
= 10KΩ
= 50pF
100mV/div
S
A
L
L
5V/div
V
= ±2.5V
= 25°C
= 10KΩ
= 50pF
S
T
A
R
C
L
L
20mV/div
2µs/div
2µs/div
1V/div
ALD4702A/ALD4702B
ALD4702
Advanced Linear Devices
5 of 9
TYPICAL APPLICATIONS
RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER
RAIL-TO-RAIL WAVEFORM
+5V
INPUT
5V
0V
~
12
Z
IN
= 10
Ω
0.1µF
-
+5V
OUTPUT
OUTPUT
0V
C
L
V
IN
+
R
L
=10KΩ
400pF
Performance waveforms.
Upper trace is the output of a
Wien Bridge Oscillator. Lower
trace is the output of Rail-to-Rail
voltage follower.
0 ≤ V ≤ 5V
IN
* See rail to rail waveform
PHOTO DETECTOR CURRENT
TO VOLTAGE CONVERTER
LOW OFFSET SUMMING AMPLIFIER
R
F
= 5M
50K
+2.5V
- 2.5V
10K
10K
I
.01µF
.01µF
INPUT 1
INPUT 2
+2.5V
-2.5V
-
-
V
= I x R
F
OUT
PHOTODIODE
OUTPUT
GAIN = 5
+
+
C
= 4000pF
L
R
= 10K
L
* Circuit Drives Large Load
Capacitance ≤ 4000pF
RAIL-TO-RAIL VOLTAGE COMPARATOR
WIEN BRIDGE OSCILLATOR (RAIL-TO -RAIL)
SINE WAVE GENERATOR
+5V
+2.5V
-
0.1µF
OUTPUT
V
IN
-
+
10K
+5V
-2.5V
10K
OUTPUT
+
50K
.01µF
C = .01µF
10K
R = 10K
1
10M
~
f =
~ 1.6KHz
2πR
C
* See rail to rail waveform
ALD4702A/ALD4702B
ALD4702
Advanced Linear Devices
6 of 9
SOIC-14 PACKAGE DRAWING
14 Pin Plastic SOIC Package
Millimeters
Inches
Dim
A
Min
Max
Min
Max
E
1.75
0.25
0.45
0.25
8.75
4.05
0.053
0.069
1.35
A
1
0.004
0.014
0.007
0.336
0.140
0.010
0.018
0.010
0.345
0.160
0.10
0.35
0.18
8.55
3.50
b
C
S (45°)
D-14
E
e
1.27 BSC
0.050 BSC
0.224
H
6.30
0.937
8°
0.248
0.037
8°
5.70
0.60
0°
D
L
0.024
0°
ø
S
0.50
0.010
0.020
0.25
A
A
1
e
b
S (45°)
C
H
L
ø
ALD4702A/ALD4702B
ALD4702
Advanced Linear Devices
7 of 9
PDIP-14 PACKAGE DRAWING
14 Pin Plastic DIP Package
Millimeters
Inches
Dim
A
Min
Max
Min
Max
5.08
0.105
0.200
3.81
0.38
1.27
0.89
0.38
0.20
17.27
5.59
7.62
2.29
7.37
2.79
1.02
0°
E
E
1
A
A
1
1.27
2.03
1.65
0.51
0.30
19.30
7.11
8.26
2.79
7.87
3.81
2.03
15°
0.015
0.050
0.035
0.015
0.008
0.680
0.220
0.300
0.090
0.290
0.110
0.040
0°
0.050
0.080
0.065
0.020
0.012
0.760
0.280
0.325
0.110
0.310
0.150
0.080
15°
2
b
b
1
c
D-14
E
E
1
D
e
S
e
1
L
A
2
A
S-14
ø
L
A
1
e
b
b
1
c
ø
e
1
ALD4702A/ALD4702B
ALD4702
Advanced Linear Devices
8 of 9
CERDIP-14 PACKAGE DRAWING
14 Pin CERDIP Package
Millimeters
Inches
Dim
A
Min
Max
Min
Max
5.08
2.16
1.65
0.58
0.38
19.94
7.87
8.26
0.140
0.200
3.55
E
E
1
A
1
0.050
0.038
0.014
0.008
--
0.085
0.065
0.023
0.015
0.785
0.310
0.325
1.27
0.97
0.36
0.20
--
b
b
1
C
D-14
E
D
0.220
0.290
5.59
7.73
E
1
e
0.100 BSC
0.300 BSC
2.54 BSC
7.62 BSC
A
1
s
e
1
A
L
5.08
--
0.150
0.200
--
3.81
L
1
0.125
0.015
--
3.18
0.38
--
L
1
L
L
2
L
2
1.78
2.49
15°
0.070
0.098
15°
b
b
1
S
Ø
0°
0°
e
C
ø
e
1
ALD4702A/ALD4702B
ALD4702
Advanced Linear Devices
9 of 9
相关型号：
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