SN28837 Datasheet | Texas Instruments

description The SN28837 is a monolithic integrated circuit designed to supply timing signals for the Texas Instruments (TI™) 8-mm-diagonal TC276 (PAL color) and TC277 (PAL monochrome) CCD image sensors. The SN28837 supplies both CCD-drive signals and PAL-television synchronization signals at standard video rates. It requires a single 5-V supply voltage and a 13.37-MHz crystal-oscillator input. The SN28837 provides the user with several options including multiple antiblooming modes, variable-integration time, external synchronization, clamp-pulse selection, and delayed horizontal transfer. FS PACKAGE (TOP VIEW) GND HCR VCR GT2 GT1/SH3 NC NC GT3/SH2 NC SH1 CLK PD LSW CLK13M NC BCP1 BCP2 CP1 CP2 CSYNC CBLK BF VD SCBLK IDP HGATE TESTA FI SFI NC 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 1 45 2 44 3 43 4 42 5 41 6 40 7 39 8 38 9 37 10 36 11 35 12 34 13 33 14 32 15 31 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 VCC VCC1 X2 X1 VCC PI ABIN GT PS S3 S2 S1 TESTB TESTC VDS E/L VGATE ABS0 ABS1 ABS2 VCC HIGH GPS GP VD2 SB NC - No internal connection The SN28837 is designed to drive the CCD image sensor through intermediary level-shifting devices such as the TI TMS3473B parallel driver and the SN28846 serial driver. It also supplies sample-and-hold signals for the TI TL1593 3-channel sample-and-hold circuit and multiplex signals for the TI TL1051 video preprocessor. In color applications, the SN28837 interfaces with the SN28838 color-subcarrier generator to generate the PAL color subcarrier. The SN28837 is supplied in a 60-pin plastic flat package and is characterized for operation from - 20°C to 45°C. This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 k V according to MIL-STD-883C, Method 3015; however, precautions should be taken to avoid application of any voltage...