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MAX4480AUK+T

P1-P3P4-P6P7-P9P10-P10
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
Maxim Integrated 7
MAX4480–MAX4483
Pin Description
Detailed Description
Rail-to-Rail Output Stage
The MAX4480–MAX4483 can drive a 5kΩ load and still
typically swing within 80mV of the supply rails. Figure 1
shows the MAX4480 output voltage swing configured
with A
V
= +10V/V.
Driving Capacitive Loads
Driving a capacitive load can cause instability in many
op amps, especially those with low quiescent current.
The MAX4480–MAX4483 are unity-gain stable for a
range of capacitive loads to above 400pF. Figure 2
shows the MAX4480 response with an excessive
capacitive load. Adding a series resistor between the
output and the load capacitor (Figure 3) improves the
1V/div
100μs/div
Figure 1. Rail-to-Rail Output Operation
MAX4483
MAX4482
MAX4480
MAX4481
IN+——1 Noninverting Amplifier Input1
OUTC
OUTD
V
DD
SHDN
INC-
IND-
OUT
OUTA
OUTB
V
SS
IN-
INA-
INB-
IND+
INC+
INB+
INA+
NAME
8
14
4
—
9
13
—
1
7
11
—
2
6
12
10
5
3
PIN
—
—
8
—
—
—
—
1
7
4
—
2
6
—
—
5
3
Amplifier Output C——
Amplifier Output D——
Positive Supply. Use a 0.01µF bypass capacitor to GND.65
Active-Low Shutdown Input. Connect to V
DD
for
normal operation. Do not leave floating.
5—
Inverting Amplifier Input C——
Inverting Amplifier Input D——
Amplifier Output44
Amplifier Output A——
Amplifier Output B——
Negative Supply. Connect to ground for single-supply
operation. Use a 0.01µF bypass capacitor to GND.
22
Inverting Amplifier Input33
Inverting Amplifier Input A——
Inverting Amplifier Input B——
Noninverting Amplifier Input D——
Noninverting Amplifier Input C——
Noninverting Amplifier Input B——
Noninverting Amplifier Input A——
FUNCTION
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
8 Maxim Integrated
MAX4480–MAX4483
circuit’s response by isolating the load capacitance
from the op amp’s output.
Applications Information
Shutdown Mode
The MAX4481 features a low-power shutdown mode.
When SHDN goes low, the supply current drops to
0.05µA (typ) and the output enters a high-impedance
state. Pull SHDN high to enable the amplifier. Do not
leave SHDN floating. Figure 4 shows the shutdown
waveform.
Power-Up
The MAX4480–MAX4483 outputs typically settle within
50µs after power-up. Figure 5 shows the output voltage
on power-up and power-down.
Power Supplies and Layout
The MAX4480–MAX4483 operate from a single +2.5V to
+5.5V power supply. Bypass the power supply with a
0.1µF capacitor to ground.
Good layout techniques optimize performance by
decreasing the amount of stray capacitance at the op
amp’s inputs and outputs. To decrease stray capaci-
tance, minimize trace lengths by placing external com-
ponents close to the op amp’s pins.
Chip Information
PROCESS: BiCMOS
20μs/div
50mV/div
C
L
= 1nF
R
ISO
C
L
MAX4480
MAX4481
MAX4482
MAX4483
Figure 3. Capacitive-Load-Driving Circuit
400
μ
s/div
2V/div
R
L
= 10M
Ω
TO V
SS
, C
L
= 25pF
Figure 4. Shutdown Waveform
4
μ
s/div
OUT
1V/div
V
DD
2V/div
Figure 5. Power-Up/Down Waveform
Figure 2. Small-Signal Transient Response with Excessive
Capacitive Load
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
Maxim Integrated 9
MAX4480–MAX4483
6
SOT23/SO/μMAX
TSSOP/SO
V
SS
OUTA
INA+
1
2
3
4
8
INB-
5
INB+
7
OUTB
INA-
V
DD
OUTA
INA+
INB+
OUTB
INB-
1
2
3
4
5
6
7
14
13
12
11
10
9
8
IND+
INC+
INC-
OUTC
IND-
OUTD
INA-
V
DD
V
SS
MAX4483
MAX4482
Pin Configurations (continued)
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
5 SC70 X5+1
21-0076 90-0188
5 SOT23 U5+1
21-0057 90-0174
6 SC70 X6SN+1
21-0077 90-0189
6 SOT23 U6SN+1
21-0058 90-0175
8 SOT23 K8+5
21-0078 90-0176
8 SO S8+2
21-0041 90-0096
8 µMAX U8+1
21-0036 90-0092
14 TSSOP U14+1
21-0066 90-0013
14 SO S14+1
21-0041 90-0112
P1-P3P4-P6P7-P9P10-P10

MAX4480AUK+T

Mfr. #:
Buy MAX4480AUK+T
Manufacturer:
Maxim Integrated
Description:
Operational Amplifiers - Op Amps Single-Supply Rail-Rail
Lifecycle:
New from this manufacturer.
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