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ISL70100SEHF/PROTO Datasheet(PDF) 1 Page - Renesas Technology Corp |
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ISL70100SEHF/PROTO Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 28 page  ISL70100SEH, ISL73100SEH Radiation Hardened 40V Current Sense Amplifiers Datasheet R34DS0009EU0101 Rev.1.01 Page 1 of 27 Jul.10.20 The ISL70100SEH and ISL73100SEH are radiation hardened 40V current sense amplifiers built on the Renesas proprietary PR40 SOI process. These devices have a wide power supply range of 2.7V to 40V. The input common-mode voltage is independent of the supply voltage and extends from -0.3V to 40.0V, making them ideal to use in both high-side and low-side applications. The ISL70100SEH and ISL73100SEH are trans-conductance amplifiers that monitor current using an external sense resistor and output a current proportional to the sensed voltage. The overall voltage gain is adjustable with a single resistor from the output to ground. These amplifiers have an extremely low offset voltage and input bias currents, making them ideal for precision sensing applications. They have a minimum bandwidth of 500kHz with a slew rate of 500µA/µs that make them useful for current feedback in telemetry applications. When the parts are powered down (V+ = V- = 0V), the sense pins (RS+, RS-) are high impedance to avoid loading the monitored circuit. The parts are available in a hermetically sealed 10 Ld ceramic flat-pack package or die form and operate across the full-range military temperature of -55°C to +125°C. Related Literature For a full list of related documents, visit our website: ISL70100SEH and ISL73100SEH product pages Features • Power supply range: 2.7V to 40V • Input common-mode range: -0.3V to 40V • Transconductance: 2µA/mV (typical) ○ ±1% accuracy (TA = 25°C) ○ ±1.5% accuracy (TA = -55°C, 125°C) • Voltage offset: 10µV (typical), V+ = 12V • Adjustable gain with a single resistor • Radiation acceptance testing - ISL70100SEH ○ HDR (50-300rad(Si)/s): 100krad(Si) ○ LDR (<10mrad(Si)/s): 75krad(Si) • Radiation acceptance testing - ISL73100SEH ○ LDR (<10mrad(Si)/s): 75krad(Si) • SEE hardness (see SEE report for details) ○ No SEB (V+ = 35V): 86.4MeV•cm2/mg ○ No SEB (V+ = 42V): 43.0MeV•cm2/mg • Electrically Screened to SMD 5962-20212 Applications • High-side or low-side current sensing • Battery monitoring • Power management • Motor control • Command, telemetry, and control systems Figure 1. Typical Application: High-Side Current Sense for 28V Supply Rail Figure 2. Transconductance, V+ = 12V ISL70100SEH ISL70100SEH ISL70100SEH 28V RSENSE ROUT RH ADC RH ADC 12V VOUT = (VSEN(mV) * 2µA/mV) * ROUT ISL70100SEH 28V RSENSE ROUT RH ADC 12V VOUT = (VSEN(mV) * 2µA/mV) * ROUT VSEN + - 1.966 1.976 1.986 1.996 2.006 2.016 2.026 -10 0 10 20 30 40 50 Input Common-Mode Voltage (V) -55°C 25°C 125°C |
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