ISL28271 Datasheet PDF - Intersil Corporation
| Part Number | ISL28271 | |
| Description | (ISL28271 / ISL28272) Rail-to- Rail Input and Output (RRIO) Instrumentation Amplifier | |
| Manufacturers | Intersil Corporation | |
| Logo |  |
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®
Data Sheet
ISL28271, ISL28272
December 8, 2006
FN6390.0
Dual Micropower, Single Supply, Rail-to-
Rail Input and Output (RRIO)
Instrumentation Amplifier
The ISL28271 and ISL28272 are dual micropower
instrumentation amplifiers (in-amps) optimized for low 2.4V
to 5V single supplies.
Both devices feature an Input Range Enhancement Circuit
(IREC) which maintains CMRR performance for input
voltages equal to the positive and negative supply rails. The
input signal is capable of swinging 10% above the positive
supply rail and to 100mV below the negative supply with only
a slight degradation of the CMRR performance. The output
operation is rail to rail.
The ISL28271 is compensated for a minimum gain of 10 or
more. For higher gain applications, the ISL28272 is
compensated for a minimum gain of 100. The in-amps have
CMOS input devices for maximum input common voltage
range. The amplifiers can be operated from one lithium cell
or two Ni-Cd batteries.
Ordering Information
www.DataSheet4U.com PART NUMBER
PART
TAPE & PACKAGE PKG.
(Note)
MARKING REEL (Pb-Free) DWG. #
ISL28271FAZ
(Note)
28271 FAZ 97/Tube 16 Ld QSOP MDP0040
(Pb-free)
ISL28271FAZ-T7 28271 FAZ
7” 16 Ld QSOP MDP0040
(Note)
(1000 pcs) (Pb-free)
ISL28272FAZ
(Note)
28272 FAZ 97/Tube 16 Ld QSOP MDP0040
(Pb-free)
ISL28272FAZ-T7 28272 FAZ
7” 16 Ld QSOP MDP0040
(Note)
(1000 pcs) (Pb-free)
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
• 120µA typical supply current for both channels
• 30pA max input bias current
• 100dB CMRR, PSRR
• 0.7µV/°C offset voltage temperature coefficient
• 180kHz 3dB Bandwidth - ISL28271
• 100kHz 3dB Bandwidth - ISL28272
• 0.5V/µs slew rate
• Single supply operation
• Rail-to-rail input and output (RRIO)
• Input is capable of swinging above V+ and below V-
(ground sensing)
• 0.081%1 typical gain error - ISL28271
• -0.19%1 typical gain error - ISL28272
• Pb-free plus anneal available (RoHS compliant)
Applications
• Battery- or solar-powered systems
• Strain gauge
• Sensor signal conditioning
• Medical devices
• Industrial instrumentations
Pinout
ISL28271, ISL28272
(16 LD QSOP)
TOP VIEW
NC 1
OUT_A 2
FB+_A 3
FB-_A 4
IN-_A 5
IN+_A 6
EN_A 7
V- 8
+-
16 V+
15 OUT_B
14 FB+_B
-+
13 FB-_B
12 IN-_B
11 IN+_B
10 EN_B
9 NC
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.
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ISL28271, ISL28272
Typical Performance Curves (Continued)
25
VS = 5V
20
VS = 2.4V
15
10
AV = 10
RL = 10kΩ
5
CL = 10pF
RF/RG = 10
RF = 1kΩ
0 RG = 100Ω
10 100
1k 10k
FREQUENCY (Hz)
100k
1M
FIGURE 7. ISL28271 FREQUENCY RESPONSE vs SUPPLY
VOLTAGE
45
40
35
30
25
20
15
AV = 100
RL = 10kΩ
10
CL = 10pF
RF/RG = 100
5 RF = 10kΩ
RG = 100Ω
0
10 100
VS = 5V
VS = 2.4V
1k 10k
FREQUENCY (Hz)
100k
1M
FIGURE 8. ISL28272 FREQUENCY RESPONSE vs SUPPLY
VOLTAGE
25
820pF
470pF
20
220pF
15
AV = 10
R = 10kΩ
10 CL = 10pF
RF/RG = 10
RF = 1kΩ
5 RG = 100Ω
10 100
1k 10k
FREQUENCY (Hz)
100pF
100k
1M
FIGURE 9. ISL28271 FREQUENCY RESPONSE vs CLOAD
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 10. ISL28272 FREQUENCY RESPONSE vs CLOAD
90
80
70
60
50
40
AV = 10
30
20
10
0
-10
10
100
1k 10k 100k
FREQUENCY (Hz)
1M
FIGURE 11. ISL28271 CMRR vs FREQUENCY
120
100
80
60
AV = 100
40
20
0
10
100
1k
10k 100k
1M
FREQUENCY (Hz)
FIGURE 12. ISL28272 CMRR vs FREQUENCY
5 FN6390.0
December 8, 2006
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ISL28271 electronic component. |
| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ISL28271.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| ISL28270 | The function is (ISL28270 - ISL28470) Rail-to-Rail Input and Output (RRIO) Instrumentation Amplifier. Intersil Corporation | |
| ISL28271 | The function is (ISL28271 / ISL28272) Rail-to- Rail Input and Output (RRIO) Instrumentation Amplifier. Intersil Corporation | |
| ISL28272 | The function is (ISL28271 / ISL28272) Rail-to- Rail Input and Output (RRIO) Instrumentation Amplifier. Intersil Corporation | |
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