(Hong Kong)
Product Summary
The TDA8755T/C1 is a bipolar 8-bit video low-power analog-to-digital conversion (ADC) interface for YUV signals. The TDA8755T/C1 converts the YUV analog input signal into 8-bit coded digital words in a 4 : 1 : 1 format at a sampling rate of 20 MHz. The U/V signals are converted in a multiplexed manner. All analog signal inputs are digitally clamped and a fast precharge is provided for start-up. All digital inputs and outputs are TTL compatible. Frame synchronization is supported in a multiplexed manner. Applications are (1)High speed analog-to-digital conversion for video signal digitizing; (2)100 Hz improved definition TV (IDTV).
Parametrics
TDA8755T/C1 absolute maximum ratings: (1)VCCA analog supply voltage: -0.3 to +7.0 V; (2)VCCD digital supply voltage: -0.3 to +7.0 V; (3)VCCO output stages supply voltage: -0.3 to +7.0 V; (4)DVCC supply voltage difference between VCCA and VCCD: -1.0 to +1.0 V; (5)supply voltage difference between VCCO and VCCD: -1.0 to +1.0 V; (6)supply voltage difference between VCCA and VCCO: -1.0 to +1.0 V; (7)VI input voltage referenced to AGND: +5.0 V; (8)Vclk(p-p)AC input voltage for switching (peak-to-peak value)referenced to DGND: VCCD V; (9)IO output current: +6 mA; (10)Tstg storage temperature: -55 to +150 °C; (11)Tamb operating ambient temperature: 0 to +70 °C; (12)Tj junction temperature: +150 °C.
Features
TDA8755T/C1 features: (1)8-bit resolution; (2)Sampling rate up to 20 MHz; (3)TTL compatible digital inputs; (4)3-state TTL outputs; (5)U, V twos complement outputs; (6)Y binary output; (7)Power dissipation of 550 mW (typical); (8)Low analog input capacitance, no buffer amplifier required; (9)High signal-to-noise ratio over a large analog input frequency range; (10)Track-and-hold included; (11)Clamp functions included; (12)UV multiplexed ADC; (13)4 : 1 : 1 output data encoder; (14)Stable voltage regulator included.
Diagrams
