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PDF ISL28474 Data sheet ( Hoja de datos )
| Número de pieza | ISL28474 | |
| Descripción | (ISL28274 / ISL28474) Rail-to-Rail Input-Output Instrumentation Amplifier and Precision Operational Amplifier | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Data Sheet
ISL28274, ISL28474
December 13, 2006
FN6345.0
Micropower, Single Supply, Rail-to-Rail
Input-Output Instrumentation Amplifier
and Precision Operational Amplifier
The ISL28274 is a combination of a micropower
instrumentation amplifier (Amp A) with a low power precision
amplifier (Amp B) in a single package. The ISL28474 consist
of two micropower instrumentation amplifiers (Amp A) and
two low power precision amplifiers (Amp B) in a single
package. The amplifiers are optimized for operation at 2.4V
to 5V single supplies. Inputs and outputs can operate rail-to-
rail. As with all instrumentation amplifiers, a pair of inputs
provide a high common-mode rejection and are completely
independent from a pair of feedback terminals. The
feedback terminals allow zero input to be translated to any
output offset, including ground. A feedback divider controls
the overall gain of the amplifier. The additional precision
amplifier can be used to generate higher gain, with smaller
feedback resistors or used to generate a reference voltage.
The instrumentation amp (Amp A) is compensated for a gain
of 100 or more and the precision amp (Amp B) is unity gain
stable. Both amplifiers have PMOS inputs that provide less
than 30pA input bias currents.
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The amplifiers can be operated from one lithium cell or two
Ni-Cd batteries. The amplifiers input range goes from below
ground to slightly above positive rail. The output stage
swings completely to ground or positive supply - no pull-up
or pull-down resistors are needed.
Ordering Information
PART NUMBER PART
QTY. PER PACKAGE PKG.
(Note)
MARKING TUBE/REEL (Pb-Free) DWG. #
ISL28274FAZ 28274FAZ
97/Tube 16 Ld QSOP MDP0040
ISL28274FAZ-T7 28274FAZ
7” 16 Ld QSOP MDP0040
(1000 pcs) Tape & Reel
Coming Soon ISL28474FAZ 55 /Tube 24 Ld QSOP MDP0040
ISL28474FAZ
Coming Soon ISL28474FAZ 7” 24 Ld QSOP MDP0040
ISL28474FAZ-T7
(1000 pcs) Tape & Reel
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Features
• Combination of IN-AMP and OP-AMP in a single package
• 120µA supply current for ISL28274
• Input Offset Voltage IN-AMP 400µV max
• Input Offset Voltage OP-AMP 225µV max
• 30pA max input bias current
• 100dB CMRR and PSRR
• Single supply operation of 2.4V to 5.0V
• Ground Sensing
• Input voltage range is rail-to-rail and output swings
rail-to-rail
• Pb-free plus anneal available (RoHS compliant)
Applications
• 4-20mA loops
• Industrial Process Control
• Medical Instrumentations
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL28274, ISL28474
Typical Performance Curves
90
COMMON-MODE INPUT = V+
GAIN = 10,000
80
GAIN = 5,000
70 GAIN = 2,000
GAIN = 1,000
60
GAIN = 500
50 GAIN = 200
GAIN = 100
40
30
1
10 100 1k 10k 100k
FREQUENCY (Hz)
FIGURE 1. AMPLIFIER “A”(INAMP) FREQUENCY
RESPONSE vs CLOSED LOOP GAIN
1M
90
COMMON-MODE INPUT = 1/2V+
GAIN = 10,000
80
GAIN = 5,000
70 GAIN = 2,000
GAIN = 1,000
60
GAIN = 500
50 GAIN = 200
40 GAIN = 100
30
1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
FIGURE 2. AMPLIFIER “A”(INAMP) FREQUENCY RESPONSE
vs CLOSED LOOP GAIN. VCM = 1/2V+
90
COMMON-MODE INPUT = VM +10mV
GAIN = 10,000
80
GAIN = 5,000
70 GAIN = 2,000
GAIN = 1,000
60
GAIN = 500
50 GAIN = 200
GAIN = 100
40
30
1
10 100 1k 10k 100k
FREQUENCY (Hz)
FIGURE 3. AMPLIFIER “A”(INAMP) FREQUENCY
RESPONSE vs CLOSED LOOP GAIN
1M
45
40 VS = 5V
35
30
VS = 2.4V
25
20
15
AV = 100
RL = 10kΩ
10
CL = 10pF
RF/RG = 100
5 RF = 10kΩ
0 RG = 100Ω
10 100
1k 10k
FREQUENCY (Hz)
100k
1M
FIGURE 4. AMPLIFIER “A”(INAMP) FREQUENCY
RESPONSE vs SUPPLY VOLTAGE
50
45 2200pF
1200pF
40
35
AV = 100
R = 10kΩ
30
CL = 10pF
RF/RG = 100
RF = 10kΩ
25 RG = 100Ω
10 100
820pF
56pF
1k 10k
FREQUENCY (Hz)
100k
1M
FIGURE 5. AMPLIFIER “A”(INAMP) FREQUENCY
RESPONSE vs CLOAD
5
120
100
80
60
AV = 100
40
20
0
10
100
1k
10k 100k
1M
FREQUENCY (Hz)
FIGURE 6. AMPLIFIER “A”(INAMP) CMRR vs FREQUENCY
FN6345.0
December 13, 2006
5 Page 
ISL28274, ISL28474
Typical Performance Curves (Continued)
50
n = 100
0
-50
-100
-150
MIN
MEDIAN
-200
MAX
-250
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 37. I BIAS (IA IN-) vs TEMPERATURE VS = ±1.2V
50
n = 100
0
-50
-100
-150
MIN
MEDIAN
-200
MAX
-250
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 38. I BIAS(IN+) vs TEMPERATURE VS = ±2.5V
30
n = 100
10
-10
-30
-50
MIN
-70
-90
-110
-130
MEDIAN
MAX
-150
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 39. I BIAS(IN-) vs TEMPERATURE VS = ±2.5V
40
n = 100
-10
-60
-110
MIN
-160
MEDIAN
-210
-260
MAX
-310
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 40. I BIAS(IN+) vs TEMPERATURE VS = ±1.2V
40
n = 100
-10
-60 MIN
-110
-160
MEDIAN
MAX
-210
-260
-310
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 41. I BIAS(IN-) vs TEMPERATURE VS = ±1.2V
40.0
20.0
MAX
n = 100
0.0
-20.0
MIN
-40.0
-60.0
MEDIAN
-80.0
-100.0
-120.0
-140.0
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
FIGURE 42. IA INPUT OFFSET CURRENT vs TEMPERATURE
VS = ±2.5V
11 FN6345.0
December 13, 2006
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet ISL28474.PDF ] | |
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