The ICL7652 is a precision chopper-stabilized operational amplifier manufactured using Texas Instruments Advanced LinCMOS process. This process, in conjunction with unique chopper-stabilization circuitry, produces an operational amplifier whose performance matches or exceeds that of similar devices available today.
●Chopper stabilization techniques make possible extremely high dc precision by continuously nulling input offset voltage even with variations in temperature, time, common-mode voltage, and supply voltage. Additionally, low-frequency noise voltage is significantly reduced. This precision, coupled with the extremely high input impedance of the CMOS input stage, makes the ICL7652 an ideal choice for low-level signal-processing applications such as strain gauges, thermocouples, and other transducer amplifiers.
●The ICL7652 input common-mode range includes the negative rail, thereby providing superior performance in either single-supply or split-supply applications, even at supply voltages as low as ±1.9 V. The ICL7652 also features fast overload recovery time. Two external capacitors are required to operate the device; however, the on-chip chopper control circuitry is transparent to the user.
●The device inputs and output are designed to withstand 100-mA surge currents without sustaining latchup. Additionally, the ICL7652 incorporates internal ESD protection circuits that prevent functional failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015; however, care should be exercised in handling these devices, as exposure to ESD may result in degradation of the device parametric performance.
●The ICL7652 is characterized for operation from O°C to 70°C.
● Extremely Low Offset Voltage . . . 5 µV Max
● Extremely Low Change in Offset Voltage with Temperature . . . 0.003 µV/°C Typ
● Low Input Offset Current . . . 30 pA Max
● AVD . . . 120 dB Min
● CMRR and kSVR . . . 110 dB Min
● Single-Supply Operation
● Common-Mode Input Voltage Range Includes the Negative Rail
● No Noise Degradation with External Capacitors Connected to VDD
●Advanced LinCMOS is a trademark of Texas Instruments Incorporated.
