ALD4704ASBL [ALD]
QUAD RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER; 四路轨到轨CMOS运算放大器
| 型号： | ALD4704ASBL |
| 厂家： | 
ADVANCED LINEAR DEVICES |
| 描述： | QUAD RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER |
| 文件： | 总9页 (文件大小：85K) |
| 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.
ALD4704A/ALD4704B
ALD4704
QUAD RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER
GENERAL DESCRIPTION
FEATURES
The ALD4704A/ALD4704B/ALD4704 is a dual monolithic operational • Rail-to-rail input and output voltage ranges
amplifier with MOSFET input that has rail-to-rail input and output voltage • 5.0V/µs slew rate
ranges. Theinput voltagerangeandoutputvoltagerangeareveryclose • Symmetrical push-pull output drive
to the positive and negative power supply voltages. Typically the input • Inputscanextendbeyondsupplyrailsby300mV
+
voltage can be beyond positive power supply voltage V or the negative • Outputs settle to 2mV of supply rails
-
power supply voltage V by up to 300mV. The output voltage swings to • High capacitive load capability -- up to 4000pF
within 60mV of either positive or negative power supply voltages at rated • No frequency compensation required -- unity
load.
gain stable
• Extremely low input bias currents -- 1.0pA
typical (20pA max.)
With high impedance load, the output voltage of the ALD4704A/
ALD4704B/ALD4704 approaches within 1mV of the power supply rails. • Ideal for high source impedance applications
This device is designed as an alternative to the popular J-FET input • High voltage gain -- 100V/mV typical
operational amplifier in applications where lower operating voltages, • Output short circuit protected
suchas9Vbatteryor±3.25Vto ±5Vpowersuppliesarebeingused. The • Unity gain bandwidth of 2.1MHz
ALD4704A/ALD4704B/ALD4704 offers high slew rate of 5V/µs. It is • Suitable for rugged, temperature-extreme
designed and manufactured with Advanced Linear Devices' standard
enhanced ACMOS silicon gate CMOS process, and it offers low unit
cost and exceptional reliability.
environments
APPLICATIONS
The rail-to-rail input and output feature of the ALD4704A/ALD4704B/
ALD4704 expands signal voltage range for a given operating supply
voltage and allows numerous analog serial stages to be implemented
without losing operating voltage margin. The output stage is designed
to drive up to 10mA into 400pF capacitive and 1.5KΩ resistive loads at
unitygainandupto4000pFatagainof5.Shortcircuitprotectiontoeither
ground or the power supply rails is at approximately 15mA clamp
current. Due to complementary output stage design, the output can
• Voltage amplifier
• Voltage follower/buffer
• Charge integrator
• Photodiode amplifier
• Data acquisition systems
• High performance portable
instruments
source and sink 10mA into a load with symmetrical drive and is ideally • Signal conditioning circuits
suited for applications where push-pull voltage drive is desired.
• Low leakage amplifiers
• Active filters
For each of the operational amplifier, the offset voltage is trimmed on-
chip to eliminate the need for external nulling in many applications. For
precision applications, the output is designed to settle to 0.1% in 2µs. In
large signal buffer applications, the operational amplifier can function as
an ultrahigh input impedance voltage follower /buffer that allows input
and output voltage swings from positive to negative supply voltages.
This feature is intended to greatly simplify systems design and eliminate
higher voltage power supplies in many applications. Additionally, robust
design and rigorous screening make this device especially suitable for
operation in temperature-extreme environments and rugged conditions.
• Sample/Hold amplifier
• Picoammeter
• Current to voltage converter
• Coaxial cable driver
• Capacitive sensor amplifier
• Piezoelectric transducer amplifier
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
+IN
12
+IN
D
0°C to +70°C
0°C to +70°C
-55°C to 125°C
+
B
B
B
V
V-
4
5
11
10
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
14-Pin
CERDIP
Package
+IN
+IN
-IN
C
6
7
9
8
-IN
C
ALD4704ASBL
ALD4704BSBL
ALD4704SBL
ALD4704APBL
ALD4704BPBL
ALD4704PBL
ALD4704ADB
ALD4704BDB
ALD4704DB
OUT
OUT
C
TOP VIEW
SBL, PBL, DB PACKAGES
* Contact factory for leaded (non-RoHS) or high temperature versions.
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 = ±5.0V unless otherwise specified
A
S
4704A
4704B
4704
Parameter
Symbol
Min Typ
Max Min Typ Max
Min Typ Max
Unit
Test Conditions
Supply
Voltage
V
V
±3.25
6.5
±5.0 ±3.25
±5.0 ±3.25
±5.0
10.0
V
V
Dual Supply
Single Supply
S
+
10.0
6.5
10.0
6.5
Input Offset
Voltage
V
1.0
1.5
2.0
3.0
5.0 mV
6.0 mV
R ≤ 100KΩ
S
OS
0°C ≤ T ≤ +70°C
A
Input Offset
Current
I
I
1.0
1.0
15
240
1.0
1.0
15
240
1.0
1.0
15 pA
240 pA
T = 25°C
A
OS
0°C ≤ T ≤ +70°C
A
Input Bias
Current
20
300
20
300
20 pA
300 pA
T = 25°C
A
B
0°C ≤ T ≤ +70°C
A
Input Voltage
Range
V
-5.3
5.3
-5.3
5.3 -5.3
5.3
V
IR
12
12
12
Input
R
IN
10
10
10
Ω
Resistance
Input Offset
Voltage Drift
TCV
5
5
5
µV/°C
R
R
≤ 100KΩ
≤ 100KΩ
OS
S
S
Power Supply
Rejection Ratio
PSRR
CMRR
65
65
15
80
65
65
15
80
60
60
10
80
dB
0°C ≤ T ≤ +70°C
A
Common Mode
Rejection Ratio
83
83
83
dB
R ≤ 100KΩ
S
0°C ≤ T ≤ +70°C
A
Large Signal
Voltage Gain
A
V
28
100
28
100
28
100
V/mV
V/mV
R
R
= 100KΩ
≥ 1MΩ
L
L
V/mV R = 10KΩ
L
Output
Voltage
Range
V
V
V
V
low
-4.96 -4.90
4.95
-4.96 -4.90
4.90 4.95
-4.998 -4.99
-4.96 -4.90
4.90 4.95
-4.998 -4.99
4.99 4.998
V
V
V
V
R
= 10KΩ
L
O
O
O
O
high
low
4.90
0°C ≤ T ≤ +70°C
A
R ≥ 1MΩ
L
0°C ≤ T ≤ +70°C
A
-4.998 -4.99
high
4.99 4.998
4.99 4.998
Output Short
I
15
15
15
mA
SC
Circuit Current
Supply
Current
I
10
13
10
13
10
13 mA
V
= -5.0V
IN
S
No Load
Power
P
130
130
130 mW
All amplifiers, No Load
D
Dissipation
V
= ±5.0V
S
Input
C
IN
1
1
1
pF
Capacitance
Bandwidth
B
S
2.1
5.0
2.1
5.0
2.1
5.0
MHz
W
R
Slew Rate
Rise time
V/µs
A
= +1 RL = 2.0KΩ
= 10KΩ
V
t
r
0.1
15
0.1
15
0.1
15
µs
R
L
Overshoot
Factor
%
R
C
= 10KΩ
L
L
= 100pF
ALD4704A/ALD4704B
ALD4704
Advanced Linear Devices
2 of 9
OPERATING ELECTRICAL CHARACTERISTICS (cont'd)
T = 25°C V = ±5.0V unless otherwise specified
A
S
4704A
4704B
4704
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
f =1KHz
f =10Hz
n
Input Current
Noise
in
0.6
0.6
0.6
fA/√Hz
Settling
Time
ts
5.0
2.0
5.0
2.0
5.0
2.0
µs
µs
0.01%
0.1% AV = -1
R
L
= 5KΩ C = 50pF
L
V = ±5.0V -55°C ≤ T ≤ +125°C unless otherwise specified
S
A
4704ADB
4704BDB
4704DB
Max Unit
Parameter
Symbol Min
Typ Max Min Typ Max Min Typ
Test Conditions
Input Offset
Voltage
V
2.0
8.0
4.0
8.0
7.0 mV
8.0 nA
10.0 nA
dB
R
≤ 100KΩ
OS
S
Input Offset
Current
I
OS
Input Bias
Current
I
B
10.0
10.0
Power Supply
Rejection Ratio
PSRR
CMRR
60
60
10
75
83
25
60
60
10
75
83
25
60
60
10
75
83
25
R
R
≤ 100KΩ
≤ 100KΩ
S
S
Common Mode
Rejection Ratio
dB
Large Signal
Voltage Gain
A
V
V/mV
R =10KΩ
L
Output Voltage
Range
V
V
low
-4.9
4.9
-4.8
-4.9
4.9
-4.8
-4.9
4.9
-4.8
V
R
R
=10KΩ
=10KΩ
O
O
L
high
4.8
4.8
4.8
V
L
ALD4704A/ALD4704B
ALD4704
Advanced Linear Devices
3 of 9
Design & Operating Notes:
3. Theinputbiasandoffsetcurrentsareessentiallyinputprotectiondiode
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 neces-
sary to limit noise and hum pickup through proper shielding.
1. The ALD4704A/ALD4704B/ALD4704 CMOS operational amplifier
uses a 3 gain stage architecture and an improved frequency compen-
sation scheme to achieve large voltage gain, high output driving
capability, and better frequency stability. The ALD4704A/ALD4704B/
ALD4704 is internally compensated for unity gain stability using a
novel scheme. This design 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. A unity gain buffer using the
ALD4704A/ALD4704B/ALD4704 will typically drive 400pF of external
load capacitance without stability problems. In the inverting unity gain
configuration, it can drive up to 800pF of load capacitance. Compared
to other CMOS operational amplifiers, the ALD4704A/ALD4704B/
ALD4704 is much more resistant to parasitic oscillations.
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 output transistors as
determined by the bias circuitry, and the value of the load resistor
when connected. In the voltage follower configuration, the oscillation
resistantfeature, combinedwiththerailtorailinputandoutputfeature,
makes the ALD4704A/ALD4704B/ALD4704 an effective analog sig-
nalbufferformediumtohighsourceimpedancesensors, transducers,
and other circuit networks.
2. The ALD4704A/ALD4704B/ALD4704 has complementary p-channel
andn-channelinputdifferentialstagesconnectedinparalleltoaccom-
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
with other operational amplifiers, this switching point has been se-
lected to be about 1.5V above the negative supply voltage. As offset
voltage trimming on the ALD4704A/ALD4704B/ALD4704 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 greater
than 2.5 (5V operation), where the common mode voltage does not
make excursions below this switching point.
5. The ALD4704A/ALD4704B/ALD4704 operational amplifier has been
designed with static discharge protection and to minimize latch up.
However, care must be exercised when handling the device to avoid
strong static fields. 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 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 accept-
able levels while causing very small or negligible accuracy 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
= 25°C
A
±6
100
±5
±4
±3
}
+125°C
10
1
R = 10KΩ
L
R = 5KΩ
L
±2
0
±2
±4
SUPPLY VOLTAGE (V)
±6
±8
±3
±5
SUPPLY VOLTAGE (V)
±2
±4
±6
±7
INPUT BIAS CURRENT AS A FUNCTION
OF AMBIENT TEMPERATURE
SUPPLY CURRENT AS A FUNCTION
OF SUPPLY VOLTAGE
10000
8
7
INPUTS GROUNDED
OUTPUT UNLOADED
V
S
= ±5.0V
1000
100
6
5
4
3
2
T
A
= -55°C
-25°C
+25°C
10
+80°C
+125°C
1.0
0.1
1
0
-50 -25
0
25
50
75
100
125
0
±1
±2
±3
±4
±5
±6
±7
AMBIENT TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
ALD4704A/ALD4704B
ALD4704
Advanced Linear Devices
4 of 9
±7
±6
±5
TYPICAL PERFORMANCE CHARACTERISTICS (cont'd)
OPEN LOOP VOLTAGE AS A FUNCTION
OF FREQUENCY
OUTPUT VOLTAGE SWING AS A
FUNCTION OF SUPPLY VOLTAGE
±7
±6
120
100
80
-55°C ≤ T ≤ 125°C
A
V
T
= ±5.0V
= 25°C
S
A
±5
0
60
40
R
= 10KΩ
L
45
±4
±3
±2
R
= 2KΩ
L
90
135
180
20
0
-20
±4
SUPPLY VOLTAGE (V)
0
±1
±2
±3
±5
±6
±7
1
10
100
1K
10K 100K
1M
10M
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
+4
V
= ±5.0V
S
V
T
= ±5.0V
= 25ºC
S
A
10
+3
+2
5
+1
0
0
-5
-1
-2
-10
-15
-3
-4
-5
-4
-2
0
+2
+4
+6
-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
100
10
V
T
= ±5.0V
= 25°C
S
A
100
75
V
T
= ±5.0V
= 25°C
S
A
50
25
0
1
10
100
1K
10K
100K
1000K
1K
10K
100K
1000K
FREQUENCY (Hz)
LOAD RESISTANCE (Ω)
LARGE - SIGNAL TRANSIENT
RESPONSE
SMALL - SIGNAL TRANSIENT
RESPONSE
5V/div
V
T
R
C
= ±5.0V
100mV/div
S
A
L
L
V
T
R
C
= ± 5.0V
= 25°C
= 1.0KΩ
= 50pF
S
A
L
L
= 25°C
= 1KΩ
= 50pF
2µs/div
5V/div
50mV/div
1µs/div
ALD4704A/ALD4704B
ALD4704
Advanced Linear Devices
5 of 9
TYPICAL APPLICATIONS
RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER
RAIL-TO-RAIL VOLTAGE COMPARATOR
+12V
+10V
12
~
= 10
Z
IN
Ω
0.1µF
0.1µF
-
V
IN
-
V
OUT
+12V
V
OUT
C
L
V
IN
+
400pF
R
≥ 1.5KΩ
L
+
0 ≤ V ≤ 10V
IN
50K
10M
PHOTO DETECTOR CURRENT
TO VOLTAGE CONVERTER
LOW OFFSET SUMMING AMPLIFIER
R
= 5M
F
10K
10K
50K
+5V
0.1µF
INPUT 1
INPUT 2
I
-
+5V
-5V
V
V
= 1 X R
F
OUT
OUT
-
GAIN = 5
+
PHOTODIODE
C
= 4000pF
L
* Circuit Drives Large Load
Capacitance ≤ 4000pF
R
≥ 1.5K
L
+
-5V
0.1µF
WIEN BRIDGE OSCILLATOR (RAIL-TO -RAIL)
SINE WAVE GENERATOR
PRECISION CHARGE INTEGRATOR
1000 pF
+5V
-
V
OUT
+5V
1 MΩ
V
+
10K
IN
-5V
V
OUT
10K
.01µF
R = 10K
+
C = .01µF
-5V
10K
1
~
~
=
1.6K Hz
f =
2πRC
BANDPASS NETWORK
LOW PASS FILTER (RFI FILTER)
C
R
2
100K
+9V
F
5K
5K
R
2
R
1
R
1
V
IN
-
C
R
1
1
0.02µF
V
OUT
C
1
+5V
-5V
V
-
IN
V
+
OUT
+
Low Frequency
Breakpoint ƒL =
1
= 160Hz
= 32KHz
R
C
R
C
= 10K
= 100nF
= 10K
1
1
2
2
2π R1C1
1
Cutoff frequency =
= 3.2kHz
π R1C1
Gain = 10 Frequency roll-off 20dB/decade
High Frequency
Cutoff ƒH =
1
= 500pF
2π R2C2
ALD4704A/ALD4704B
ALD4704
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
ALD4704A/ALD4704B
ALD4704
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
2
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°
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
ALD4704A/ALD4704B
ALD4704
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
ALD4704A/ALD4704B
ALD4704
Advanced Linear Devices
9 of 9
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