TLV990-21PFB

The TLV990-21PFB from Texas Instruments is a single-chip Analog Front End (AFE) designed for digital still camera and PC camera applications utilizing CCD sensors. This integrated circuit performs essential analog processing functions to maximize dynamic range and correct sensor errors before digitizing the signal with an on-chip analog-to-digital converter (ADC).

Key electrical specifications include 10-bit resolution and a sample rate of 21 MSPS. The device features a programmable gain amplifier (PGA) with a gain range from 0 dB to 36 dB, allowing for flexible signal conditioning. It operates over a voltage range of 2.7V to 3.3V and has a typical power dissipation of 150 mW. The AFE also includes features like automatic or programmable optical black level and offset calibration, a digital filter, and bad pixel correction.

Packaged in a 48-pin TQFP, the TLV990-21PFB is designed for surface mounting. Its operating temperature range is -20°C to 75°C. The output data format is CMOS Parallel. This component is suitable for applications requiring high-performance analog signal processing for CCD imaging.

Additional features include internal reference voltages and a serial interface for register configuration. The typical differential nonlinearity error is less than ±0.5 LSB, and the integral nonlinearity error is less than ±0.75 LSB, ensuring accurate signal conversion.