TC9459N

The TC9459N is a electronic volume control ICs developed for use in home stereos and other audio equipment. The feature of TC9459N are as follows: (1)sound volume can be controlled in 91 steps from to -89 dB or up to an infinite level in 1dB increments; (2)incorporating two channels of volume control circuits, the device allows independent volume control: therefore, it also provides the balancing function; (3)a loudness circuit is built in; (4)can operate with a single or dual power supplies; (5)can control up to 4 chips on the same bus by using chip select input; (6)thanks to its polysilicon resistor, the device allows you to configure a low-distortion, high-performance volume control system.

The absolute maximum ratings of the TC9459N are: (1)supply voltage: -0.3~36V; (2)GND block input voltage: -0.3~VDD+0.3V; (3)VSS block input voltage: VSS - 0.3~VDD + 0.3V; (4)power dissipation: 300mW; (5)operating temperature: -40~85°C; (6)storage temperature: - 65~150°C.

The following is about the electrical characteristics of TC9459N: (1)operating supply voltage: 12V min and 34V max at operating with dual power supplies; (2)operating supply current: 0.5mA typical and 2.0mA max at non-loaded, no input; (3)operating frequency: 0MHz min and 1.0MHz max at CK, DATA,STB pins; (4)min. operating clock width: 0.5s at CK, DATA,STB pins; (5)volume resistance: 20.5k min, 29.3k typical and 38.2k max at when loudness OFF; (6)step deviation: -1.2dB min and 1.2dB max at deviation between volume steps; (7)analog swith leakage current: -0.1A min and 0.1A max at internal analog switch; (8)total harmonic distortion: 0.005% typical at fIN = 1kHz, VIN = 1Vrms, Rg = 600, RL = 100k, BW = 20Hz~20kHz.