LTC1052/LTC7652 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 ° C. VS = ± 5V, test circuit TC1, unless otherwise noted.LTC1052MLTC1052C/LTC7652CSYMBOLPARAMETERCONDITIONSMINTYPMAXMINTYPMAXUNITS VOS Input Offset Voltage (Note 3) ±0.5 ±5 ±0.5 ±5 µV ∆VOS/∆Temp Average Input Offset Drift (Note 3) ● ±0.01 ±0.05 ±0.01 ±0.05 µV/°C ∆VOS/∆Time Long-Term Offset Voltage Stability 100 100 nV/√Month IOS Input Offset Current ±30 ±90 ±30 ±90 pA ● ±2000 ±350 pA IB Input Bias Current ±1 ±30 ±1 ±30 pA ● ±1000 ±175 pA enP-P Input Noise Voltage RS = 100Ω, DC to 10HZ, TC3 1.5 1.5 µVP-P RS = 100Ω, DC to 1HZ, TC3 0.5 0.5 µVP-P In Input Noise Current f = 10Hz (Note 5) 0.6 0.6 fA/√Hz CMRR Common Mode Rejection Ratio VCM = V– to 2.7V ● 120 140 120 140 dB PSRR Power Supply Rejection Ratio VSUPPLY = ±2.375V to ±8V ● 120 150 120 150 dB AVOL Large-Signal Voltage Gain RL = 10k, VOUT = ±4V ● 120 150 120 150 dB VOUT Maximum Output Voltage Swing RL = 10k ● ±4.7 ±4.85 ±4.7 ±4.85 V (Note 4) RL = 100k ±4.95 ±4.95 V SR Slew Rate RL = 10k, CL = 50pF 4 4 V/µs GBW Gain Bandwidth Product 1.2 1.2 MHz IS Supply Current No Load 1.7 2.0 1.7 2.0 mA ● 3.0 3.0 mA fS Internal Sampling Frequency 330 330 Hz Clamp On Current RL = 100k ● 25 100 25 100 µA Clamp Off Current – 4V < VOUT < 4V 10 100 10 100 pA ● 2 1 nA Note 1: Absolute Maximum Ratings are those values beyond which the life testing. VOS is measured to a limit determined by test equipment of a device may be impaired. capability. Voltages on CEXTA and CEXTB, AVOL, CMRR and PSRR are Note 2: Connecting any terminal to voltages greater than V+, or less than measured to insure proper operation of the nulling loop to ensure meeting V–, may cause destructive latch-up. It is recommended that no sources the VOS and VOS drift specifications. See Package-Induced VOS in the operating from external supplies be applied prior to power-up of the Applications Information section. LTC1052/LTC7652. Note 4: Output clamp not connected. Note 3: These parameters are guaranteed by design. Thermocouple effects Note 5: Current noise is calculated from the formula: in = (2q IB)1/2, where preclude measurement of the voltage levels in high speed automatic q = 1.6 • 10–19 coulomb. WUTYPICAL PERFOR A CE CHARACTERISTICSInput Noise Voltage VS = ±5V, TEST CIRCUIT (TC3) 5µV DC TO 1Hz 0 5µV DC TO 10Hz 0 10 SEC. 1052fa 3