19-1525; Rev 2; 4/01
Low-Cost, High-Slew-Rate,
Rail-to-Rail I/O Op Amps in SC70
General Description
Features
The MAX4490/MAX4491/MAX4492 single/dual/quad,
low-cost CMOS op amps feature Rail-to-Rail® input and
output capability from either a single 2.7V to 5.5V sup-
ply or dual 1.ꢀ5V to 2.75V supplies. These amplifiers
exhibit a high slew rate of 10V/µs and a gain-bandwidth
product of 10MHz. They can drive 2kΩ resistive loads
to within 55mV of either supply rail and remain unity-
gain stable with capacitive loads up to ꢀ00pF.
ꢀ 2.7V to 5.5V Single-Supply Operation
ꢀ 10V/µs Slew Rate
ꢀ Rail-to-Rail Input Common-Mode Voltage Range
ꢀ Rail-to-Rail Output Voltage Swing
ꢀ 10MHz Gain-Bandwidth Product
ꢀ Unity-Gain Stable with Capacitive Loads
The MAX4490 is offered in the ultra-small, 5-pin SC70
package, which is 50% smaller than the standard 5-pin
SOT2ꢀ package. Specifications for all parts are guaran-
teed over the automotive (-40°C to +125°C) tempera-
ture range.
Up to 300pF
ꢀ 50pA Input Bias Current
ꢀ Ultra-Small, 5-Pin SC70 Package (MAX4490)
Ordering Information
Applications
Battery-Powered Instruments
PIN-
TOP
PART
TEMP RANGE
PACKAGE
MARK
Portable Equipment
MAX4490AXK-T -40°C to +125°C 5 SC70-5
MAX4490AUK-T -40°C to +125°C 5 SOT2ꢀ-5
MAX4491AKA-T -40°C to +125°C 8 SOT2ꢀ-5
AAB
ADKQ
AADB
—
Audio Signal Conditioning
Low-Power/Low-Voltage Applications
Sensor Amplifiers
MAX4491AUA
MAX4492AUD
MAX4492ASD
-40°C to +125°C 8 µMAX
-40°C to +125°C 14 TSSOP
-40°C to +125°C 14 SO
—
RF Power Amplifier Control
High-Side/Low-Side Current Sensors
—
Pin Configurations/
Functional Diagrams
Capacitive-Load Stability
6000
5000
TOP VIEW
MAX4490
IN+
1
2
3
5
4
V
DD
4000
3000
V
SS
UNSTABLE
2000
IN-
OUT
1000
STABLE
0
SOT23-5/SC70-5
100
1k
10k
100k
RESISTIVE LOAD (Ω)
Pin Configurations continued at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.