FAN4174 / FAN4274 — Single and Dual, Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifier
May 2008
FAN4174 / FAN4274
Single and Dual, Ultra-Low Cost, Rail-to-Rail I/O,
CMOS Amplifier
Features
200µA Supply Current per Amplifier
3.7MHz Bandwidth
Output Swing to Within 10mV of Either Rail
Input Voltage Range Exceeds the Rails
3V/µs Slew Rate
25nV/√Hz Input Voltage Noise
Replaces KM4170 and KM4270
FAN4174 Competes with OPA340 and TLV2461;
Available in SC70-5 and SOT23-5 Packages
FAN4274 Competes with OPA2340 and TLV2462;
Available in MSOP-8 Package
Fully Specified at +2.7V and +5V Supplies
Description
The FAN4174 (single) and FAN4274 (dual) are ultra-low
cost voltage feedback amplifiers with CMOS inputs that
consume only 200µA of supply current per amplifier,
while providing ±33mA of output short-circuit current.
These amplifiers are designed to operate from 2.5V to
5V supplies. The common mode voltage range extends
beyond the negative and positive rails.
The FAN4174 and FAN4274 are designed on a CMOS
process and provide 3.7MHz of bandwidth and 3V/μs of
slew rate at a supply voltage of 5V. The combination of
low power, rail-to-rail performance, low-voltage
operation, and tiny package options make this amplifier
family well suited for use in many general-purpose and
battery-powered applications.
Applications
Portable / Battery-powered Applications
PCMCIA, USB
Mobile Communications, Cellular Phones, Pagers
Notebooks and PDAs
Sensor Interface
A/D Buffer
Active Filters
Signal Conditioning
Portable Test Instruments
Figure 1. Frequency vs. Gain
Ordering Information
Part Number
FAN4174IP5X
FAN4174IS5X
FAN4274IMU8X
Operating
Temperature Range
-40 to +85°C
-40 to +85°C
-40 to +85°C
Package
5-Lead SC70 Package
5-Lead SOT23 Package
8-Lead Molded Small Outline Package
Eco Status
RoHS
RoHS
RoHS
Packing
Method
Tape and Reel
(3000)
Tape and Reel
(3000)
Tape and Reel
(3000)
For Fairchild’s definition of “green” Eco Status, please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2004 Fairchild Semiconductor Corporation
FAN4174/FAN4274 • Rev. 1.0.4
www.fairchildsemi.com
FAN4174 / FAN4274 — Single and Dual, Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifier
Typical Application
Figure 2. Pin Configuration
© 2004 Fairchild Semiconductor Corporation
FAN4174/FAN4274 • Rev. 1.0.4
www.fairchildsemi.com
2
FAN4174 / FAN4274 — Single and Dual, Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifier
Pin Configurations
Figure 3. FAN4174 SOT23
Figure 4. FAN4147 SC70
Figure 5. FAN4274 MSOP
FAN4174 Pin Assignments
Pin #
1
2
3
4
5
Name
OUT
-V
S
+IN
-IN
+V
S
Description
Output
Negative Supply
Positive Supply
Negative Input
Positive Supply
FAN4274 Pin Assignments
Pin #
1
2
3
4
5
6
7
8
Name
OUT1
-IN1
+IN1
-V
S
+IN2
-IN2
OUT2
+V
S
Description
Output, Channel 1
Negative Input, Channel 1
Positive Input, Channel 1
Negative Supply
Positive Input, Channel 2
Negative Input, Channel 2
Output, Channel 2
Positive Supply
www.fairchildsemi.com
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© 2004 Fairchild Semiconductor Corporation
FAN4174/FAN4274 • Rev. 1.0.4
FAN4174 / FAN4274 — Single and Dual, Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifier
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only. Functional operation under any of these conditions
is NOT implied. Performance and reliability are guaranteed only if operating conditions are not exceeded.
Symbol
V
CC
V
IN
T
J
T
STG
T
L
Θ
JA
Parameter
Supply Voltage
Input Voltage Range
Junction Temperature
Storage Temperature
Lead Soldering, 10 Seconds
5-Lead SOT23
Thermal Resistance
(1)
Min.
0
-V
S
-0.5
-65
Max.
6
+V
S
+0.5
+150
+150
+300
256
331
206
Unit
V
V
°C
°C
°C
°C/W
5-Lead SC70
8-Lead MSOP
Note:
1. Package thermal resistance JEDEC standard, multi-layer test boards, still air.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
T
A
Parameter
Operating Temperature Range
Min.
-40
Typ.
Max.
+85
Unit
°C
© 2004 Fairchild Semiconductor Corporation
FAN4174/FAN4274 • Rev. 1.0.4
www.fairchildsemi.com
4
FAN4174 / FAN4274 — Single and Dual, Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifier
Electrical Specifications at +2.7V
V
S
=+2.7V, G=2, R
L
=10kΩ to V
S
/2, R
F
=5kΩ; unless otherwise noted
.
Symbol
UGBW
BW
SS
GBWP
t
R
, f
F
OS
SR
HD2
HD3
THD
e
n
X
TALK
V
IO
dV
IO
I
bn
PSRR
A
OL
I
S
R
IN
C
IN
CMIR
Parameter
Conditions
G=+1
Min.
Typ.
4
2.5
4
Max.
Units
MHz
MHz
MHz
ns
%
V/µs
dBc
dBc
%
nV/√Hz
dB
Frequency Domain Response
-3dB Bandwidth
Gain Bandwidth Product
Rise and Fall Time
Overshoot
Slew Rate
2nd Harmonic Distortion
3rd Harmonic Distortion
Total Harmonic Distortion
Input Voltage Noise
Crosstalk (FAN4274)
Input Offset Voltage
Average Drift
Input Bias Current
Power Supply Rejection Ratio
Open-loop Gain
Supply Current per Amplifier
Input Resistance
Input Capacitance
Input Common Mode Voltage
Range
Common Mode
(2)
Rejection Ratio
FAN4174
FAN4274
FAN4174 (Typical)
FAN4274 (Typical)
DC, V
CM
=OV to 2.2V
DC, V
CM
=OV to 2.2V
50
50
(2)
(2)
(2)
Time Domain Response
V
O
=1.0V Step
V
O
=1.0V Step
V
O
=3V Step, G=-1
V
O
=1V
PP
, 10kHz
V
O
=1V
PP
, 10kHz
V
O
=1V
PP
, 10kHz
100kHZ
-6
300
5
3
-66
-67
0.1
26
-100
0
2.1
5
DC
DC
50
73
98
200
10
1.4
-0.3 to
2.6
-0.3 to
3.0
65
65
0.01 to
2.69
0.05 to
2.55
+34/-12
2.5 to
5.5
300
+6
Distortion and Noise Response
DC Performance
mV
µV/°C
pA
dB
dB
µA
GΩ
pF
V
Input Characteristics
CMRR
dB
Output Characteristics
V
O
I
SC
V
S
Output Voltage Swing
(2)
R
L
=10kΩ to V
S
/2
R
L
=1kΩ to V
S
/2
0.03
2.65
V
Short Circuit Output Current
Power Supply Operating Range
mA
V
Note:
2. 100% tested at 25°C.
© 2004 Fairchild Semiconductor Corporation
FAN4174/FAN4274 • Rev. 1.0.4
www.fairchildsemi.com
5
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