LTC1043CSW#PBF is a dual-channel switch-capacitor instrumentation unit component launched by ADI (formerly Linear Technology). It adopts a 18-pin WSOIC surface mount packaging. This device achieves precise charge balance switching by alternately connecting the external capacitor to the input voltage through internal switches, and then connecting the charged capacitor to the output port.
This device can serve as the front end of a high-precision instrument amplifier, providing a common mode rejection ratio (CMRR) of 120dB. The operating voltage range is 3V to 18V (single power supply) or ±3V to ±9V (dual power supply), supporting an internal clock (frequency adjustable through an external capacitor) or an external CMOS clock drive, with a maximum clock rate of 5MHz. The typical power consumption is 0.4mA, featuring low power consumption design. The operating temperature range is -40°C to +85°C. It is packaged in a WSOIC-18 wide body package, with an MSL level of Level-1.
Features ：
• Device type: Switching capacitor instrument unit component, dual-channel operates independently, sharing the same clock.
• Common-mode rejection ratio (CMRR): 120 dB, suitable for the front end of precision instruments
• Operating voltage: Single power supply 3V ~ 18V, Dual power supply ±3V ~ ±9V
• Clock mode: Internal clock (with external capacitor frequency adjustment) or external CMOS clock, up to 5 MHz
• Power current: Maximum 0.4mA
• Switch operation: Break first, then make (Break-before-Make) to avoid transient short circuit
• Operating temperature: -40°C to +85°C
• Package type: 18-SOIC W (WSOIC-18), wide body, dimensions 11.76mm × 7.6mm × 2.34mm
• MSL Level: Level-1 (Unrestricted)
• Environmental compliance: Meets RoHS standards, lead-free (Pb-Free)
Application：
• Precision instrument amplifier: High common-mode rejection ratio signal conditioning
• Voltage conversion: Ultra-precise voltage inversion, voltage multiplication, voltage division (two-part voltage division, three-part voltage division, four-part voltage division, five-part voltage division, etc.)
• V-F and F-V converters: Precise frequency conversion without any adjustments
• Sampling hold circuit: Precise signal sampling
• Switching capacitor filter, oscillator, modulator
