MAX4080/MAX4081 76V, High-Side, Current-Sense Amplifiers with Voltage Output AC Electrical Characteristics (VCC = VRS+ = 4.5V to 76V, VREF1A = VREF1B = 5V (MAX4081 only), VSENSE = (VRS+ - VRS-) = 0V, RLOAD = 100kΩ, CLOAD = 20pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2) PARAMETERSYMBOLCONDITIONMINTYPMAXUNITS MAX4080F/T/S 250 Bandwidth BW VCC = VRS+ = 48V, VOUT = 2.5V kHz MAX4081F/T/S 150 OUT Settling Time to 1% of Final VSENSE = 10mV to 100mV 20 Value µs VSENSE = 100mV to 10mV 20 Capacitive-Load Stability No sustained oscillations 500 pF Output Resistance ROUT VSENSE = 100mV 0.1 Ω Power-Up Time VCC = VRS+ = 48V, VSENSE = 100mV (Note 9) 50 µs Saturation Recovery Time (Notes 9,10) 50 µs Note 1: All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design. Note 2: VREF is defined as the average voltage of VREF1A and VREF1B. REF1B is usually connected to REF1A or GND. VSENSE is defined as VRS+ - VRS-. Note 3: The common-mode range at the low end of 4.5V applies to the most positive potential at RS+ or RS-. Depending on the polarity of VSENSE and the device’s gain, either RS+ or RS- can extend below 4.5V by the device’s typical full-scale value of VSENSE. Note 4: Negative VSENSE applies to MAX4081 only. Note 5: VSENSE is: MAX4080F, 10mV to 1000mV MAX4080T, 10mV to 250mV MAX4080S, 10mV to 100mV MAX4081F, -500mV to +500mV MAX4081T, -125mV to +125mV MAX4081S, -50mV to +50mV Note 6: VOS is extrapolated from the gain accuracy test for the MAX4080 and measured as (VOUT - VREF)/AV at VSENSE = 0V, for the MAX4081. Note 7: VSENSE is: MAX4080F, 500mV MAX4080T, 125mV MAX4080S, 50mV MAX4081F/T/S, 0V VREF1B = VREF1A = 2.5V Note 8: Output voltage is internally clamped not to exceed 18V. Note 9: Output settles to within 1% of final value. Note 10: The device will not experience phase reversal when overdriven. www.maximintegrated.com Maxim Integrated │
