S7885 Datasheet | Synaptics

PN: 505-000610-01 Rev. B S7885 Touch Controller Datasheet Introduction The Synaptics® S7885 is a high performance touchscreen controller for the automotive market.  The controller has 102 sensing channels for use in touchscreens up to 14.5 inches (diagonal) with a 16:10 aspect ratio and a sensor pitch of 5 mm. The maximum number of nodes is 2,405 (for example, a configuration of 63 RX x 39 TX or 65 RX x 37 TX). General description The S7885 supports self-capacitance, mutual-capacitance, and hybrid sensing with up to 10-finger detection. Fast report rates (up to 150 Hz) and flexible sensing frequency from 50 to 500 k Hz are  also supported. The S7885 provides high performance hardware filtering for noise mitigation, moisture detection, and severe mon mode noise rejection. The device also offers a high-performance on-chip charge pump, patented Synaptics Signal Clarity™ driving schemes, and advanced firmware algorithms. Finally, the device has patented display synchronization technology that eliminates display noise from horizontal refresh. Features and benefits - ISO-TS16949 pliant - AEC-Q100 qualification to Automotive Grade 2  (- 40ºC to 105ºC) - Production Part Approval Process (PPAP) documentation - 176LQFP (20 mm x 20 mm x 1.6 mm) - Glove detection - Moisture mitigation - Proximity support - Gesture support - Thick lens support (4.5 mm at a dielectric constant of 8) - Curved lens designs with maximum thickness same as thick lens support with any minimum thickness - Power modes: ○ Touch active ○ Normal operation ○ Sensor sleep - Serial interfaces: ○ I2C (100/400 k Hz) ○ SPI slave - Power supply schemes: ○ 2.7V to 3.6V supply voltage ○ Internal positive and negative charge pumps for increased TX voltage - Best-in-class capacitance sensing: ○ Up to 10-finger detection and simultaneous tracking ○ 102 sensing channels with positional interpolation providing best-in-class accuracy and resolution ○ Optimum SNR performance - In-system reprogrammability...