ISL70617SEH Datasheet, PDF (1/28 Pages) Intersil Corporation – High voltage process control

DATASHEET
36V Radiation Tolerant Precision Instrumentation Amp
with Rail-to-Rail Output Differential ADC Driver
ISL70617SEH
The ISL70617SEH 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 36V (±18V) and features a
differential input voltage range up to ±30V. The output stage
has rail-to-rail output drive capability optimized for differential
ADC driver applications. The output stage is powered by
separate supplies. This feature enables the output to be driven
by the same low voltage supplies powering the ADC, thereby
providing protection from high voltage signals and the low
voltage digital circuits. Its versatility makes it suitable for a
variety of general purpose applications. Additional features not
found in other instrumentation amplifiers enable high levels of
DC precision and excellent AC performance.
The gain of the ISL70617SEH can be programmed from 0.1 to
10,000 via two external resistors, R_IN and R_FB. The gain
accuracy is determined by the matching of R_IN and R_FB. The
gain resistors have Kelvin sensing, which removes gain error
due to PC trace resistance. The input and output stages have
individual power supply pins, which enable input signals riding
on a high common-mode voltage to be level shifted to a low
voltage device, such as an A/D converter. The rail-to-rail output
stage can be powered from the same supplies as the ADC,
which preserves the ADC maximum input dynamic range and
eliminates ADC input overdrive.
The ISL70617SEH is offered in a 24 Ld ceramic flatpack
package with an operating temperature range of -55°C to
+125°C.
Features
• Rail-to-rail differential output ADC driver
• Low input offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30µV
• Input bias current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.2nA
• Excellent CMRR and PSRR . . . . . . . . . . . . . . . . . . . . . . . 120dB
• Wide operating voltage range . . . . . . . . . . . . . . . ±4V to ±18V
• Closed loop -3dB BW 0.3MHz (A_V = 1k) to 5.5MHz (A_V = 0.1)
• Operating temperature range. . . . . . . . . . . .-55°C to +125°C
• Acceptance tested to 75krad(Si) (LDR) wafer-by-wafer
• Radiation tolerance
- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . . . 75krad(Si)
- SEB LET_TH (V_S = ±18V). . . . . . . . . . . . . . . 60MeV•cm²/mg
Applications
• ADC driver
• Precision test and measurement
• High voltage process control
• Signal conditioning for remote powered sensors
• Satellite communication
Related Literature
• For a full list of related documents, visit our website
- ISL70617SEH product page
SIGNAL WITH
HIGH VCM
R_IN
R_FB
+18V
IN+
GAIN = 10
VCC
+RIN VCO
-+-RRRFI^IFNSBB^L7V⁰E⁶OV^{1C7MSO+EV-HVFFBB-+VVOOUUTT}
IN-VEE
HIGH V_IN
SIGNAL
R_IN
R_FB
-18V
+18V
5V
IN+
VCC
+RIN VCO
GAIN = 0.1
+VFB
-RIN
ISL70617SEH
+VOUT
+RFB
-RFB
-VOUT
VEOV^CMO-VFB
IN-VEE
-18V
ISL71090SEH25
V_CC
Ch 1
Ch 16
GND
VCC
Ch 1
Ch 16
GND
5V
V_CC
IN
V _REF
RHADC
GND
ISL71090SEH25
FIGURE 1. COMPLETE SPACE GRADE ANALOG SIGNAL CHAIN
December 16, 2016
1
FN8697.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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