LTC6912IGN-1#PBF

LTC6912IGN-1#PBF is a dual programmable gain amplifier with serial digital interface. This low noise, digitally programmable gain amplifiers (PGA) is easy to use and occupy very little PC board space. The gains for both channels are independently programmable using a 3-wire SPI interface to select voltage gains of 0, 1, 2, 5, 10, 20, 50, and 100V/V. The device consists of 2 matched amplifiers with rail-to-rail outputs. When operated with unity gain, it will also process rail-to-rail input signals. A half-supply reference generated internally at the AGND pin supports single power supply applications. Applications include data acquisition systems, dynamic gain changing, automatic ranging circuits and automatic gain control.

• 3-wire SPI™ interface
• Extended gain-bandwidth at high gains
• Wired-OR outputs possible (2:1 analogue MUX function)
• Rail-to-rail input range, rail-to-rail output swing
• Input noise of 12.6nV/√Hz, total system dynamic range to 115dB
• Total supply voltage (VS) from 2.7V to 10.5V
• 12V/µs slew rate ( gain = 1, VS = 5V, VOUTA = VOUTB = 1.1V to 3.9V)
• Signal attenuation at gain = 0 setting is -120dB ( gain = 0 (digital inputs 0000), f = 200KHz)
• 16-lead narrow plastic SSOP package, operating temperature range from -40°C to 85°C

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