TDA5709

      The TDA5709 is a bipolar intergrated circuit which provides control signals for the radial motor. These control signals are generated from radial error signals received form a photo-diode signal processor(TDA5708), and velocity control signals from the control processor. TDA5709 has six unique features . The first one is tracking error processor with automatic asymmetry control. The second one is A.G.C.circuitry with automatic start-up and wobbe generator. The third one is tracking control for fast forward/reverse scan, serch , repeat and pause functions.The forth one is TTL compatible digital input/output. The fifth one is digitalized tracking error signal. The sixth one is possibility for car application.
     Then, there are some specifications and ratings about TDA5709. Ratings(limiting values in accordance with the absolute maximum system(IEC 134)):  Supply voltage range(V_DD-V_BB)(pin6-pin11) is -0.3 V to +13 V. Storage temperature range(T_stg) is from -55 to +150 . Operating ambient temperature range(T_amb) is -30 to +85. Operating junction temperature(T_j) is 150 max. Supply voltage: pin6-pin11(V_DD-V_BB) is 8 V min and 13 V max; pin 17 -pin 11 (V_ref-V_BB) is 4.5 V min,5.0 V typ and 5.5 V max. Quiescent supply current (I_Q) is 6 mA typ. Analogue input (pin 16) : Input voltage level (V_Rosc) is V_BB + 1.2 V typ; Input current level(I_Rosc) is -50 A typ. Gain control input (pin 5): Input voltage for mimimum radial gain(V_Cagc) is V_BB+3.5 V typ; Input voltage for maximum radial gain (V_Cagc) is V_BB+5.5 V typ; Input impedance(/ZRe1/,/ZRe2/) is 20 M.
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