ISL28127_12 Datasheet, PDF (37/44 Pages) Intersil Corporation – Providing high-performance solutions for every link in the signal chain

Precision Instrumentation Amplifiers
► High Voltage Instrumentation Amplifier
Instrumentation Amplifiers: ISL28617
40V Precision
Instrumentation
Amplifier with
Differential ADC
Driver
The ISL28617 is a high performance,
differential input, differential output
instrumentation amplifier designed for
precision analog to digital applications. It can
operate over a supply range of 8V (±4V) to 40V
(±20V) and features a differential input voltage
range up to ±34V. The output stage has rail-
to-rail output drive capability optimized for
differential ADC driver applications.
FULL BRIDGE STRAIN GAUGE AMPLIFIER AND DIFFERENTIAL ADC DRIVER
+5V
TO
+20V
-5V
TO
-20V
BRIDGE
EXCITATION
IN+
+RIN ^VCC
RIN
+RINSENSE
VCO
-RINSENSE
-RIN
ISL28617
+VFB
+VOUT
R
C
VDD
+IN
A-D
CONVERTER
RFB
+RFB
+RFBSENSE
--RRFFBBSEVN_ES_EEGND
-VOUT
VCMO^-VFB
VEO
IN-
-IN ^ISL26132
R
VREF _GND
+5V
VREF
ISL21090
AV = R_FB/R_IN RANGE FROM 0.1 TO 10,000
Excellent CMRR
140
120
100
80
60 ^AV ^{= 1000}
A_V = 100
40 _{AV = 10}
20 ^AV ^{= 1}
A_V = 0.1
0
1
10
100
1k
10k
FREQUENCY(Hz)
CMRR R_F = 121k
100k 1M
Very Low Input Noise
1000nV
100nV
1pA
iN
10nV
1nV
0.1
e_N
1
10
100
1k
10k
FREQUENCY (Hz)
INPUT VOLTAGE AND CURRENT NOISE
0.1pA
0.01pA
100k
Voltage
Vos
Ib Max CMRR PSRR Gain
Is Max
Noise Noise Current
Part
Supply
Voltage (V)
Rail-To-Rail
Min
Gain
Max @ TCVos
25°C Typ
@
25°C
min @ min @ Error
25°C 25°C Typ
Isc
Typ
@
25°C
-3dB Slew 0.1 to @ Noise @
BW Rate 10Hz 1kHz 1kHz
Temp
Range
Number Min Max In Out (V/V) mV µV/°C nA
dB
dB
% mA mA MHz V/µs µVpp nV/√Hz fA/√Hz
°C
ISL28617 8
40 No Yes 0.1
0.1
0.5
1
130 123 0.0005 45 4.8
4
4 0.085 8.6
150 -40 to 125
► Low Voltage, Low Power Instrumentation Amplifier
Instrumentation Amplifiers: EL817x, ISL2827x
Micro-power
Instrumentation Amps
Key Features
• Extremely Low Supply Currents
-- <156μA Max. Supply Current
• Single Supply 2.4V to 5.0V Operation
• Rail-to-rail Input and Output (RRIO)
-- Operate above and below the rails
-- Ground sensing option
Excellent CMRR
Low Supply Current
140
N = 2000
130
MAX
120
MEDIAN
110
100
MIN
90
80-40 _-20
0 20 40 60 80 100 120
TEMPERATURE (°C)
EL8170 CMRR vs TEMPERATURE, V_CM = +2.5V TO -2.5V, V₊, V_- = ±2.5V
85
N = 2000
80
75
MAX
70
65
MEDIAN
60
55
MIN
50
45
40
-40 -20 0
20 40 60 80 100 120
TEMPERATURE (°C)
EL8170 SUPPLY CURRENT vs TEMPERATURE, V+, V- = ±2.5V, VIN = 0V
Part
Supply
Number Voltage (V)
Rail-To-
Rail
-3dB
Vos
Ib
BW
Min Max
Max CMRR PSRR Gain
Is Max @
Noise Voltage Current
Gain @ TCVos @ min @ min @ Error Isc @ Lowest Slew 0.1 to Noise @ Noise @
(V/V) 25°C Typ 25°C 25°C 25°C Typ Typ 25°C Gain Rate 10Hz 1kHz 1kHz
Temp
Range
Package
Single Min Max In Out
mV µV/°C nA dB dB % mA µA kHz V/µs µVpp nV/√Hz fA/√Hz °C 8-SOIC 16-QSOP
EL8170 2.4 5 Yes Yes 100 0.2 0.24 3
90 85 0.35 26 95 450 0.55 3.5
58
380 -40 to 125 Single
EL8171 2.4 5 Yes Yes 10 1.5 1.5 0.05 75 75 0.15 26 95 450 0.55 14
220
900 -40 to 125 Single
EL8172 2.4 5 Yes Yes 100 0.3 0.14 0.05 75 75 0.2 26 95 170 0.55 10
80
200 -40 to 125 Single
EL8173 2.4 5 Yes Yes 10 1 2.5 3
85 75 0.1 26 95 170 0.55 3.6 220
800 -40 to 125 Single
ISL28270 2.4 5 Yes Yes 100 0.15 0.7 2
90 90 0.5 29 156 0.24 0.5 3.5
60
370 -40 to 125
Dual
ISL28271 2.4 5 Yes Yes 10 0.6 0.7 0.03 80 80 0.081 26 156 0.18 0.5 10
240
920 -40 to 125
Dual
ISL28272 2.4 5 Yes Yes 100 0.5 0.7 0.03 80
80 0.19 26 156 0.1 0.5
6
78
200 -40 to 125
Dual
ISL28273 2.4 5 Yes Yes 10 0.6 0.7 2.5 85 80 0.12 29 156 0.265 0.6 3.5 210
750 -40 to 125
Dual
Intersil Signal Path Products  2012  www.intersil.com
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