For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Description
The MAX4174/MAX4175/MAX4274/MAX4275 Gain-
Amp family combines a low-cost Rail-to-Rail
op amp
with precision internal gain-setting resistors and V
CC
/ 2
biasing. Factory-trimmed on-chip resistors decrease
design size, cost, and layout, and provide 0.1% gain
accuracy. Fixed inverting gains from -0.25V/V to
-100V/V or noninverting gains from +1.25V/V to
+101V/V are available. These devices operate from a
single +2.5V to +5.5V supply and consume only 300μA.
GainAmp amplifiers are optimally compensated for
each gain version, achieving exceptional GBW prod-
ucts up to 23MHz (A
V
= +25V/V to +101V/V). High-volt-
age fault protection withstands ±17V at either input
without excessive current draw.
Three versions are available in this amplifier family: single/
dual/quad open-loop, unity-gain stable (MAX4281/
MAX4282/MAX4284); single/dual fixed gain (MAX4174/
MAX4274); and single/dual fixed gain plus internal
V
CC
/ 2 bias at the noninverting input (MAX4175/
MAX4275), which simplifies input biasing in single-supply
designs. The input common-mode voltage range of the
open-loop amplifiers extends from 150mV below the
negative supply to within 1.2V of the positive supply.
The outputs can swing rail-to-rail and drive a 1k
load
while maintaining excellent DC accuracy. The amplifier
is stable for capacitive loads up to 470pF.
Applications
Smart-Card Readers
Infrared Receivers for
Remote Controls
Low-Side Current-Sense
Amplifiers
Portable Instruments
Instruments, Terminals,
and Bar-Code Readers
Keyless Entry
Photodiode Preamps
Features
o
GainAmp Family Provides Internal Precision
Gain-Setting Resistors in SOT23 (MAX4174/5)
o
0.1% Gain Accuracy (R
F
/R
G
) (MAX4174/5,
MAX4274/5)
o
54 Standard Gains Available (MAX4174/5,
MAX4274/5)
o
Open-Loop Unity-Gain-Stable Op Amps
(MAX4281/2/4)
o
Rail-to-Rail Outputs Drive 1k
Load
o
Internal V
CC
/ 2 Biasing (MAX4175/MAX4275)
o
+2.5V to +5.5V Single Supply
o
300μA Supply Current
o
Up to 23MHz GBW Product
o
Fault-Protected Inputs Withstand ±17V
o
Stable with Capacitive Loads Up to 470pF with
No Isolation Resistor
M
SOT23, Rail-to-Rail, Fixed-Gain
GainAmps/Open-Loop Op Amps
________________________________________________________________ Maxim Integrated Products
1
19-1407; Rev 3; 8/99
PART
*
MAX4174
_EUK-T
MAX4175
_EUK-T
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-
PACKAGE
5 SOT23-5
5 SOT23-5
Ordering Information continued at end of data sheet.
* Insert the desired gain code (from the Gain Selection Guide)
in the blank to complete the part number.
Refer to the Gain Selection Guide for a list of preferred gains
and SOT Top Marks.
Ordering Information
GainAmp is a trademark of Maxim Integrated Products. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Patent pending
Pin Configurations
Typical Operating Circuit
MAX4175
INPUT
IN-
IN+
+5V
R
B
R
B
OUT
V
CC
V
CC
V
EE
V
EE
R
G
0.1
μ
F
R
F
0.1
μ
F
0.1
μ
F
TOP VIEW
MAX4174
5
4
1
2
3
IN-
OUT
V
CC
V
EE
R
G
R
F
IN+
+
SOT23-5
Selector Guide appears at end of data sheet.
Pin Configurations continued at end of data sheet.
TOP
MARK
Powered by ICminer.com Electronic-Library Service CopyRight 2003