ALD ALD4702SBL Quad 5v rail-to-rail precision operational amplifier Datasheet

ADVANCED
LINEAR
DEVICES, 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
analog applications using ±2.5V to ±5V dual power supply systems, as
well as +4V to +10V battery operated systems. All device characteristics
are specified for +5V single supply or ±2.5V dual supply systems. 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
• Inputs can extend beyond supply rails by 300mV
• Outputs settle to 2mV of supply rails
• High load capacitance capability up to 4000pF
• No frequency compensation required -unity gain stable
• 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
• Suitable for rugged, temperature-extreme
environments
The ALD4702A/ALD4702B/ALD4702 is designed to offer a trade-off of
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.
Several important characteristics of the device make many applications
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.
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/ALD4702 is designed to settle to 0.01% in 8µs. Additionally,
robust design and rigorous screening make this device especially
suitable for operation in temperature-extreme environments and rugged
conditions.
ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS))
Operating Temperature Range
0°C to +70°C
0°C to +70°C
-55°C to 125°C
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
14-Pin
CERDIP
Package
ALD4702ASBL
ALD4702BSBL
ALD4702SBL
ALD4702APBL
ALD4702BPBL
ALD4702PBL
ALD4702ADB
ALD4702BDB
ALD4702DB
* Contact factory for leaded (non-RoHS) or high temperature versions.
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
PIN CONFIGURATION
OUT A
1
14
OUT D
-IN A
2
13
-IN D
+IN A 3
12
+IN D
V+
4
11
V-
+IN B 5
10
+IN C
-IN B
6
9
-IN C
OUT B
7
8
OUT C
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 VSupply voltage, VS referenced to VDifferential input voltage range
Power dissipation
Operating tempurature range SBL, PBL packages
DB package
Storage tempurature range
Lead tempurature, 10 seconds
CAUTION: ESD Sensitive Device. Use static control procedures in ESD controlled environment.
-0.3V to V++10.6V
±5.3V
-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
OPERATING ELECTRICAL CHARACTERISTICS
TA = 25°C VS = ±2.5V unless otherwise specified
Min
4702A
Typ
Symbol
Supply
Voltage
VS
V+
Input Offset
Voltage
VOS
Input Offset
Current
IOS
1.0
25
240
1.0
25
240
Input Bias
Current
IB
1.0
30
300
1.0
30
300
Input Voltage
Range
VIR
Input
Resistance
RIN
Input Offset
Voltage Drift
TCVOS
Power Supply
Rejection Ratio
PSRR
65
65
83
83
65
65
83
83
60
60
Common Mode
Rejection Ratio
CMRR
65
65
83
83
65
65
83
83
Large Signal
Voltage Gain
AV
15
28
100
15
28
100
Output
Voltage
Range
VO low
VO high
0.002
4.998
0.01
4.99
VO low
VO high
-2.44
2.44
-2.40
2.40
±2.0
4.0
Max
Min
±5.0
10.0
±2.0
4.0
4702B
Typ Max
Parameter
5.3
+2.8
4702
Typ
Max
Unit
Test
Conditions
±5.0
10.0
V
V
Dual Supply
Single Supply
5.0
6.5
mV
mV
RS ≤ 100KΩ
0°C ≤ TA ≤ +70°C
1.0
25
240
pA
pA
TA = 25°C
0°C ≤ TA ≤ +70°C
1.0
30
300
pA
pA
TA = 25°C
0°C ≤ TA ≤ +70°C
5.3
+2.8
V
V
V+ = +5V
VS = ±2.5V
±5.0 ±2.0
10.0 4.0
1.0
2.0
-0.3
-2.8
Min
2.0
3.5
-0.3
-2.8
5.3
+2.8
-0.3
-2.8
1012
1012
1012
7
7
7
Ω
µV/°C
RS ≤ 100KΩ
83
83
dB
RS ≤ 100KΩ
0°C ≤ TA ≤ +70°C
60
60
83
83
dB
RS ≤ 100KΩ
0°C ≤ TA ≤ +70°C
12
28
100
V/mV
V/mV
RL = 10KΩ
RL ≥ 1MΩ
V
RL = 1MΩ Single supply
0°C ≤ TA ≤ +70°C
V
V
RL = 10KΩ Dual supply
0°C ≤ TA ≤ +70°C
0.002 0.01
4.998
4.99
0.002
4.998
0.01
4.99
-2.44 -2.40
2.44
2.40
-2.44
2.44
-2.40
2.40
Output Short
Circuit Current
ISC
Supply
Current
IS
4.0
6.0
4.0
6.0
4.0
6.0
mA
VIN = 0V No Load
Power
Dissipation
PD
20
30
20
30
20
30
mW
Both amplifiers
VS = ±2.5V
Input
Capacitance
CIN
1
Bandwidth
BW
0.7
1.5
0.7
1.5
0.7
1.5
MHz
Slew Rate
SR
1.1
1.9
1.1
1.9
1.1
1.9
V/µs
AV = +1 RL = 10KΩ
Rise time
tr
Overshoot
Factor
ALD4702A/ALD4702B
ALD4702
8
8
8
1
1
mA
pF
0.2
0.2
0.2
µs
RL = 10KΩ
10
10
10
%
RL = 10KΩ CL = 100pF
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OPERATING ELECTRICAL CHARACTERISTICS (cont'd)
TA = 25°C VS = ±2.5V unless otherwise specified
Min
4702A
Typ
Max
Min
4702B
Typ
Max
Min
4702
Typ
Parameter
Symbol
Maximum Load
Capacitance
CL
400
4000
400
4000
400
4000
Input Noise
Voltage
en
26
26
Input Current
Noise
in
0.6
Settling
Time
ts
8.0
3.0
Max
Unit
Test Conditions
pF
pF
Gain = 1
Gain = 5
26
nV/√H Z
f = 1KHZ
0.6
0.6
fA/√H Z
f = 10HZ
8.0
3.0
8.0
3.0
µs
µs
0.01%
0.1% AV = -1
RL = 5KΩ CL = 50pF
Unit
Test Conditions
TA = 25°C VS = ±5.0V unless otherwise specified
Min
4702A
Typ
Power Supply
Rejection Ratio
PSRR
83
83
83
dB
RS ≤ 100KΩ
Common Mode
Rejection Ratio
CMRR
83
83
83
dB
RS ≤ 100KΩ
Large Signal
Voltage Gain
AV
250
250
250
V/mV
RL = 10KΩ
Output Voltage
Range
VO low
VO high
V
RL = 10KΩ
Bandwidth
BW
1.7
1.7
1.7
MHZ
Slew Rate
SR
2.8
2.8
2.8
V/µs
-4.90
4.93
Min
-4.8
4.8
-4.90
4.93
Max
Min
4702
Typ
Symbol
4.8
Max
4702B
Typ
Parameter
-4.8
4.8
-4.90
4.93
Max
-4.8
AV =+1
CL =50pF
VS = +5.0V -55°C ≤ TA ≤ +125°C unless otherwise specified
4702DA
Typ
Max
Unit
Test Conditions
4.0
7.0
mV
RS ≤ 100KΩ
8.0
8.0
8.0
nA
10.0
10.0
10.0
nA
Min
4702BDA
Typ Max
Symbol
Input Offset
Voltage
VOS
2.0
Input Offset
Current
IOS
Input Bias
Current
IB
Power Supply
Rejection Ratio
PSRR
60
75
60
75
60
75
dB
RS ≤ 100KΩ
Common Mode
Rejection Ratio
CMRR
60
83
60
83
60
83
dB
RS ≤ 100KΩ
Large Signal
Voltage Gain
AV
10
25
10
25
7
25
V/mV
RL ≤ 10KΩ
Output Voltage
Range
VO low
VO high
0.1
4.9
4.8
0.1
4.9
RL ≤ 10KΩ
4.8
0.1
4.9
V
4.8
ALD4702A/ALD4702B
ALD4702
Min
4702ADA
Typ Max
Parameter
0.2
Min
0.2
Advanced Linear Devices
0.2
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Design & Operating Notes:
1. The ALD4702A/ALD4702B/ALD4702 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. 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 characteristics 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 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 ALD4702A/ALD4702B/ALD4702 is
much more resistant to parasitic oscillations.
2. The ALD4702A/ALD4702B/ALD4702 has complementary p-channel
and n-channel input differential stages connected in parallel to accomplish 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 selected
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
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.
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
output transistors 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 the ALD4702A/ALD4702B/
ALD4702 an effective analog signal buffer for medium to high
source impedance sensors, transducers, and other circuit networks.
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
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 acceptable 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
TA = 25°C
OPEN LOOP VOLTAGE
GAIN (V/mV)
COMMON MODE INPUT
VOLTAGE RANGE (V)
±7
±6
±5
±4
±3
±2
} -55°C
} +25°C
100
} +125°C
10
RL= 10KΩ
RL= 5KΩ
±1
1
0
0
±1
±2
±3
±4
±5
±6
0
±7
±2
INPUT BIAS CURRENT AS A FUNCTION
OF AMBIENT TEMPERATURE
±6
±8
SUPPLY CURRENT AS A FUNCTION
OF SUPPLY VOLTAGE
12
SUPPLY CURRENT (mA)
10000
INPUT BIAS CURRENT (pA)
±4
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
VS = ± 2.5V
1000
100
10
1.0
0.1
INPUTS GROUNDED
OUTPUTS UNLOADED
10
8
TA = -55°C
6
-25°C
+25°C
4
+80°C
+125°C
2
0
-50
-25
0
25
50
75
100
125
AMBIENT TEMPERATURE (°C)
ALD4702A/ALD4702B
ALD4702
±1
±2
±3
±4
±5
±6
SUPPLY VOLTAGE (V)
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TYPICAL PERFORMANCE CHARACTERISTICS (cont'd)
OPEN LOOP VOLTAGE GAIN AS
A FUNCTION OF FREQUENCY
OUTPUT VOLTAGE SWING AS A
FUNCTION OF SUPPLY VOLTAGE
120
RL = 10KΩ
RL = 10KΩ
±5
±4
RL = 2KΩ
±3
VS = ±2.5V
TA = 25°C
100
OPEN LOOP VOLTAGE
GAIN (dB)
-55°C ≤ TA ≤ 125°C
±6
80
60
0
40
45
20
90
0
135
180
-20
±2
0
±1
±2
±3
±4
±5
±6
1
±7
10
100
INPUT OFFSET VOLTAGE AS A FUNCTION
OF AMBIENT TEMPERATURE
REPRESENTATIVE UNITS
100K
1M
10M
+5
+4
INPUT OFFSET VOLTAGE AS A FUNCTION
OF COMMON MODE INPUT VOLTAGE
15
INPUT OFFSET VOLTAGE (mV)
INPUT OFFSET VOLTAGE (mV)
10K
FREQUENCY (Hz)
SUPPLY VOLTAGE (V)
VS = ±2.5V
+3
+2
+1
0
-1
-2
-3
-4
VS = ±2.5V
TA = 25°C
10
5
0
-5
-10
-15
-5
-50
-25
0
+25
+50
+75
-2
+100 +125
-1
0
+1
+2
+3
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
1000
VOLTAGE NOISE DENSITY
(nV/ √ Hz)
OPEN LOOP VOLTAGE GAIN (V/mV)
1K
PHASE SHIFT IN DEGREES
OUTPUT VOLTAGE SWING (V)
±7
VS = ±2.5V
TA = 25°C
100
10
125
VS = ±2.5V
TA = 25°C
100
75
50
25
0
1
1K
10K
1000K
100K
10
100
LOAD RESISTANCE (Ω)
1V/div
ALD4702A/ALD4702B
ALD4702
10K
100K
1000K
SMALL - SIGNAL TRANSIENT
RESPONSE
LARGE - SIGNAL TRANSIENT
RESPONSE
5V/div
1K
FREQUENCY (Hz)
VS = ±2.5V
TA = 25°C
RL = 10KΩ
CL = 50pF
100mV/div
20mV/div
2µs/div
Advanced Linear Devices
VS = ±2.5V
TA = 25°C
RL = 10KΩ
CL = 50pF
2µs/div
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TYPICAL APPLICATIONS
RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER
RAIL-TO-RAIL WAVEFORM
INPUT
5V
~ 1012Ω
ZIN =
+5V
0V
0.1µF
-
VIN
CL
+
+5V
OUTPUT
0V
OUTPUT
RL =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 ≤ VIN ≤ 5V
* See rail to rail waveform
PHOTO DETECTOR CURRENT
TO VOLTAGE CONVERTER
LOW OFFSET SUMMING AMPLIFIER
RF = 5M
50K
+2.5V
10K
INPUT 1
INPUT 2
I
.01µF
10K
OUTPUT
GAIN = 5
+2.5V
-
.01µF
+
+
CL = 4000pF
* Circuit Drives Large Load
Capacitance ≤ 4000pF
VOUT = I x RF
PHOTODIODE
-2.5V
RL = 10K
- 2.5V
RAIL-TO-RAIL VOLTAGE COMPARATOR
WIEN BRIDGE OSCILLATOR (RAIL-TO -RAIL)
SINE WAVE GENERATOR
+5V
+2.5V
-
OUTPUT
+
.01µF
C = .01µF
10K
-2.5V
0.1µF
-
+5V
50K
10K
OUTPUT
+
10K
R = 10K
f =~
VIN
1
2πRC
10M
~ 1.6KHz
* See rail to rail waveform
ALD4702A/ALD4702B
ALD4702
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SOIC-14 PACKAGE DRAWING
14 Pin Plastic SOIC Package
Millimeters
E
S (45°)
Dim
Min
A
1.35
Max
1.75
Min
0.053
Max
0.069
A1
0.10
0.25
0.004
0.010
b
0.35
0.45
0.014
0.018
C
0.18
0.25
0.007
0.010
D-14
8.55
8.75
0.336
0.345
E
3.50
4.05
0.140
0.160
1.27 BSC
e
D
A
Inches
0.050 BSC
H
5.70
6.30
0.224
0.248
L
0.60
0.937
0.024
0.037
ø
0°
8°
0°
8°
S
0.25
0.50
0.010
0.020
A1
e
b
S (45°)
H
L
ALD4702A/ALD4702B
ALD4702
C
ø
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PDIP-14 PACKAGE DRAWING
14 Pin Plastic DIP Package
Millimeters
E
E1
D
S
A2
A1
A
L
Inches
Dim
A
Min
Max
Min
3.81
5.08
0.105
Max
0.200
A1
0.38
1.27
0.015
0.050
A2
1.27
2.03
0.050
0.080
b
0.89
1.65
0.035
0.065
b1
0.38
0.51
0.015
0.020
c
0.20
0.30
0.008
0.012
D-14
17.27
19.30
0.680
0.760
E
5.59
7.11
0.220
0.280
E1
7.62
8.26
0.300
0.325
e
2.29
2.79
0.090
0.110
e1
7.37
7.87
0.290
0.310
L
2.79
3.81
0.110
0.150
S-14
1.02
2.03
0.040
0.080
ø
0°
15°
0°
15°
e
b
b1
c
e1
ALD4702A/ALD4702B
ALD4702
ø
Advanced Linear Devices
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CERDIP-14 PACKAGE DRAWING
14 Pin CERDIP Package
Millimeters
E E1
D
A1
s
A
L
L1
L2
b
b1
e
Inches
Dim
A
Min
Max
Min
3.55
5.08
0.140
Max
0.200
A1
1.27
2.16
0.050
0.085
b
0.97
1.65
0.038
0.065
b1
0.36
0.58
0.014
0.023
C
0.20
0.38
0.008
0.015
D-14
--
19.94
--
0.785
E
5.59
7.87
0.220
0.310
E1
7.73
8.26
0.290
0.325
e
2.54 BSC
0.100 BSC
e1
7.62 BSC
0.300 BSC
L
3.81
5.08
0.150
0.200
L1
3.18
--
0.125
--
L2
0.38
1.78
0.015
0.070
S
--
2.49
--
0.098
Ø
0°
15°
0°
15°
C
e1
ALD4702A/ALD4702B
ALD4702
ø
Advanced Linear Devices
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