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PDF MAX4250EUK-T Data sheet ( Hoja de datos )
| Número de pieza | MAX4250EUK-T | |
| Descripción | SOT23 / Single-Supply / Low-Noise / Low-Distortion / Rail-to-Rail Op Amps | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1295; Rev 2; 4/98
SOT23, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
General Description
The MAX4249–MAX4257 low-noise, low-distortion oper-
ational amplifiers offer Rail-to-Rail® outputs and single-
supply operation down to 2.4V. They draw only 400µA
of quiescent supply current per amplifier while featuring
ultra-low distortion (0.0002% THD), as well as low input
voltage noise density (7.9nV/√Hz) and low input current
noise density (0.5fA/√Hz). These features make the
devices an ideal choice for portable/battery-powered
applications that require low distortion and/or low noise.
For additional power conservation, the MAX4249/
MAX4251/MAX4253/MAX4256 offer a low-power shut-
down mode that reduces supply current to 0.5µA and
puts the amplifiers’ outputs into a high-impedance state.
The MAX4249–MAX4257’s outputs swing rail-to-rail and
their input common-mode voltage range includes
ground. The MAX4250–MAX4254 are unity-gain stable;
the MAX4249/MAX4255/MAX4256/MAX4257 are internal-
ly compensated for gains of 10V/V or greater. The single
MAX4250/MAX4255 are available in a space-saving,
5-pin SOT23 package.
Applications
Portable/Battery-Powered Equipment
Medical Instrumentation
ADC Buffers
Digital Scales
Strain Gauges
Sensor Amplifiers
Portable Communications Devices
Pin Configurations and Typical Operating Circuit appear at
end of data sheet.
____________________________Features
o Low Input Voltage Noise Density: 7.9nV/√Hz
o Low Input Current Noise Density: 0.5fA/√Hz
o Low Distortion: 0.0002% THD (1kΩ load)
o 400µA Quiescent Supply Current per Amplifier
o Single-Supply Operation from +2.4V to +5.5V
o Input Common-Mode Voltage Range Includes
Ground
o Outputs Swing within 8mV of Rails with a 10kΩ Load
o 3MHz GBW Product, Unity-Gain Stable
(MAX4250–MAX4254)
22MHz GBW Product, Stable with AV ≥ 10V/V
(MAX4249/MAX4255/MAX4256/MAX4257)
o Excellent DC Characteristics:
VOS = 70µV
IBIAS = 1pA
Large-Signal Voltage Gain = 116dB
o Low-Power Shutdown Mode:
Reduces Supply Current to 0.5µA
Places Outputs in a High-Impedance State
o 400pF Capacitive-Load Handling Capability
o Available in Space-Saving SOT23 and µMAX
Packages
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
SOT
TOP MARK
MAX4249ESD -40°C to +85°C 14 SO
MAX4249EUB -40°C to +85°C 10 µMAX
—
—
MAX4250EUK-T -40°C to +85°C 5 SOT23-5
ACCI
Ordering Information continued at end of data sheet.
Selector Guide
PART
MAX4249
MAX4250
MAX4251
MAX4252
MAX4253
MAX4254
MAX4255
MAX4256
MAX4257
GAIN
BANDWIDTH
(MHz)
22
3
3
3
3
3
22
22
22
MINIMUM
STABLE
GAIN (V/V)
10
1
1
1
1
1
10
10
10
NO. OF AMPLIFIERS
PER PACKAGE
2
1
1
2
2
4
1
1
2
SHUTDOWN
MODE
Yes
—
Yes
—
Yes
—
—
Yes
—
PACKAGES
10-pin µMAX, 14-pin SO
5-pin SOT23
8-pin µMAX/SO
8-pin µMAX/SO
10-pin µMAX, 14-pin SO
14-pin SO
5-pin SOT23
8-pin µMAX/SO
8-pin µMAX/SO
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
1 page  
SOT23, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0V, VCM = VOUT = VDD/2, input noise floor of test equipment = 10nV/√Hz for all distortion measurements,
TA = +25°C, unless otherwise noted.)
LARGE-SIGNAL VOLTAGE GAIN
vs. OUTPUT VOLTAGE SWING
150
RL = 200kΩ
140
130
RL = 20kΩ
120
110 RL = 2kΩ
100
90
80
70 VDD = 5V
60 RL REFERENCED TO VDD
50
0
50 100 150 200 250
VOUT SWING FROM EITHER SUPPLY (mV)
SUPPLY CURRENT AND SHUTDOWN
SUPPLY CURRENT vs. SUPPLY VOLTAGE
440
PER AMPLIFIER
0.6MAX4249 TOC 13A
420
SHDN = VDD
400
0.5
0.4
SHDN = VSS
380 0.3
360 0.2
340 0.1
320 0
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3 5.5
SUPPLY VOLTAGE (V)
MAX4250–MAX4254
GAIN AND PHASE vs. FREQUENCY
60 180MAX4249 TOC15
VDD = 3V, 5V
50 RL = 50kΩ 144
40
CL = 20pF
AV = 1000
108
30 72
GAIN
20 36
10 0
0 -36
-10
-20 PHASE
-72
-108
-30 -144
-40
100
1k 10k 100k 1M
FREQUENCY (Hz)
-180
10M
LARGE-SIGNAL VOLTAGE GAIN
vs. TEMPERATURE
125
120
RL REFERENCED T0 VDD/2
VDD = 5V
115
110
RL = 100kΩ
VOUT = 10mV
to 4.99V
105 RL = 1kΩ
VOUT = 150mV
to 4.75V
100
-40 -20 0
RL = 10kΩ
VOUT = 20mV
to 4.975V
20 40 60
TEMPERATURE (°C)
SUPPLY CURRENT
vs. OUTPUT VOLTAGE
2000
80
1000
VDD = 5V
400
VDD = 3V
100
0.001
0.01 0.1
1
OUTPUT VOLTAGE (V)
5
MAX4249, MAX4255/MAX4256/MAX4257
GAIN AND PHASE vs. FREQUENCY
60 180MAX4249 TOC16
50
VDD = 3V, 5V
RL = 50kΩ
40 CL = 20pF
30 AV = 1000
144
108
GAIN
72
20 36
10 0
0 -36
-10
PHASE
-72
-20 -108
-30 -144
-40
100
1k 10k 100k 1M
FREQUENCY (Hz)
-180
10M
SUPPLY CURRENT AND SHUTDOWN
SUPPLY CURRENT vs. TEMPERATURE
460 MAX4249 TOC12 0.376
PER AMPLIFIER
440
420 0.375
400
SHDN = VDD
380
0.374
SHDN = VSS
360
340
-40 -20
0 20 40 60
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE
vs. SUPPLY VOLTAGE
180
VCM = 0V
160 VOUT = VDD/2
RL REFERENCED TO GND
140
0.373
80
120
RL = 10kΩ
100 RL = 1kΩ
80
60 RL = 100kΩ
40
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
SUPPLY VOLTAGE (V)
MAX4250–MAX4254
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
VDD = 3V, 5V
-10
MAX4249 TOC17
-20
-30
-40
-50
-60 PSRR+
-70
-80 PSRR-
-90
-100
-110
1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
_______________________________________________________________________________________ 5
5 Page 
SOT23, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
160
140
120
100
80
60
40
20
0
10
SHADED AREA INDICATES
STABLE OPERATION
WITH NO NEED FOR
ISOLATION RESISTOR.
100 1000
CAPACITIVE LOADING (pF)
10,000
NOTE: USING AN ISOLATION RESISTOR REDUCES PEAKING.
Figure 6. Isolation Resistance vs. Capacitive Loading to
Minimize Peaking (<2dB)
4.5
VDD = 3V
4.0
3.5
3.0
2.5
2.0
1.5
SHADED AREA INDICATES
1.0 STABLE OPERATION
0.5
WITH NO NEED FOR
ISOLATION RESISTOR.
0
10
100 1000
CAPACITIVE LOAD (pF)
10,000
NOTE: RISO CHOSEN FOR PEAKING <2dB.
Figure 8. MAX4250–MAX4254 Unity-Gain Bandwidth vs.
Capacitive Load
25
MAX4250–MAX4254 (AV = +1)
MAX4249/MAX4255–MAX4257 (AV = +10)
20 RISO = 0
SHADED AREA INDICATES
15 STABLE OPERATION
WITH NO NEED FOR
ISOLATION RESISTOR.
10
5
0
10
100 1000
CAPACITIVE LOAD (pF)
10,000
Figure 7. Peaking vs. Capacitive Load
power supply with a 0.1µF ceramic capacitor placed
close to the VDD pin. If operating from dual supplies,
bypass each supply to ground.
Good layout improves performance by decreasing the
amount of stray capacitance and noise at the op amp’s
inputs and output. To decrease stray capacitance, min-
imize PC board trace lengths and resistor leads, and
place external components close to the op amp’s pins.
___________________Chip Information
TRANSISTOR COUNTS:
MAX4250/MAX4251/MAX4255/MAX4256: 170
MAX4249/MAX4252/MAX4253/MAX4257: 340
MAX4254: 680
Ordering Information (continued)
PART
TEMP. RANGE
PIN-
PACKAGE
SOT
TOP MARK
MAX4251ESA -40°C to +85°C 8 SO
—
MAX4251EUA -40°C to +85°C 8 µMAX
—
MAX4252ESA -40°C to +85°C 8 SO
—
MAX4252EUA -40°C to +85°C 8 µMAX
—
MAX4253EUB -40°C to +85°C 10 µMAX
—
MAX4253ESD -40°C to +85°C 14 SO
—
MAX4254ESD -40°C to +85°C 14 SO
—
MAX4255EUK-T -40°C to +85°C 5 SOT23-5 ACCJ
MAX4256ESA -40°C to +85°C 8 SO
—
MAX4256EUA -40°C to +85°C 8 µMAX
—
MAX4257ESA -40°C to +85°C 8 SO
—
MAX4257EUA -40°C to +85°C 8 µMAX
—
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX4250EUK-T.PDF ] | |
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