ALD4702APBL Advanced Linear Devices Inc, ALD4702APBL Datasheet - Page 4

• Manufacturer Part Number: ALD4702APBL
• Description: IC OPAMP GP R-R CMOS QUAD 14PDIP
• Manufacturer: Advanced Linear Devices Inc

Specifications of ALD4702APBL

• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Output Type: Push-Pull, Rail-to-Rail
• Slew Rate: 2.8 V/µs
• Gain Bandwidth Product: 1.7MHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 1000µV
• Current - Supply: 4mA
• Current - Output / Channel: 8mA
• Voltage - Supply, Single/dual (±): 4 V ~ 12 V, ±2 V ~ 6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Number Of Channels: 4
• Voltage Gain Db: 107.96 dB
• Common Mode Rejection Ratio (min): 65 dB
• Input Offset Voltage: 1 mV
• Operating Supply Voltage: 5 V, 9 V
• Supply Current: 6 mA
• Maximum Power Dissipation: 30 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Maximum Dual Supply Voltage: +/- 6 V
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details
• Other names: 1014-1179

ALD4702A/ALD4702B
ALD4702
Design & Operating Notes:
1. The ALD4702A/ALD4702B/ALD4702 CMOS operational amplifier uses
2. The ALD4702A/ALD4702B/ALD4702 has complementary p-channel
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.
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.
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
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.
10000
1000
100
±7
±6
±5
±4
±3
±2
±1
1.0
0.1
10
0
COMMON MODE INPUT VOLTAGE RANGE
-50
0
AS A FUNCTION OF SUPPLY VOLTAGE
INPUT BIAS CURRENT AS A FUNCTION
±1
-25
OF AMBIENT TEMPERATURE
V
T
A
S
= 25°C
= ± 2.5V
A unity gain buffer using the ALD4702A/
AMBIENT TEMPERATURE (°C)
±2
SUPPLY VOLTAGE (V)
0
±3
25
TYPICAL PERFORMANCE CHARACTERISTICS
±4
50
±5
75
±6
100
Advanced Linear Devices
±7
125
3. The input bias and offset currents are essentially input protection
4. The output stage consists of class AB complementary output
5. The ALD4702A/ALD4702B/ALD4702 operational amplifier has
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.
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 net-
works.
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 accu-
racy effects.
1000
100
12
10
10
8
6
4
2
0
OPEN LOOP VOLTAGE GAIN AS A FUNCTION
1
OF SUPPLY VOLTAGE AND TEMPERATURE
±1
0
SUPPLY CURRENT AS A FUNCTION
±2
OF SUPPLY VOLTAGE
±2
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
±3
T
A
±4
INPUTS GROUNDED
OUTPUTS UNLOADED
+125°C
= -55°C
+25°C
+80°C
±4
-25°C
}
}
}
+125°C
+25°C
-55°C
±6
R
R
±5
L
L
= 10KΩ
= 5KΩ
±6
±8
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