CMD6392
4-Channel BTL Driver for Players
This can be increased by inserting a capacitor between
FOperation notes
point A (pins 3, 11 and 18) and VREF. The constant current
(Iconst) given in the electrical characteristics refers to I1
and I2 in Fig. 2.
(1) The CMD6392FP has an internal thermal shutdown
circuit. Output current is muted when the chip tempera-
ture exceeds 180_C (typically).
(2) The output current can also be muted by lowering
the mute pin (pin 15) voltage below 0.5V.
(3) All four driver output channels are muted during
thermal shutdown, muting and a drop in bias pin voltage.
No other components are muted.
(2) CH4 driver (spindle driver)
Pins 23 and 25 are shorted inside the IC. Bias amplitudes
are the primary type of inputs assumed. The level shift
circuit converts the pre-stage amplifier output (centered
on the bias level and impressed on pins 23 and 25) to
positive and negative amplitudes centered on VREF. The
level shift circuit’s output is BTL-output from the buffer
amplifier.
Because of the high input impedance, the IC is designed
to accommodate a filter comprising attached resistors
and capacitors.
(Example) For secondary filters
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Tel:886-3-3214525
Email: server@ceramate.com.tw
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Rev 1.2 Oct.24, 2002
Page 6 of 8
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