HA12160 View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

Manufacturer

HA12160

Audio Signal Processor for Car Deck and Cassette Deck (Dolby B-type NR with PB Amp)

Hitachi -> Renesas Electronics 

HA12163 Series

6. Note on Connecting with Tape Head to IC

This IC has no internal resistor to give the DC bias current to equalizer amp, therefore the DC bias

current will give through the head. This IC provides the Vref buffer output pin for Rch and Lch

separately (has two Vref terminal). In case of use that the Rch and Lch reference of head are

connected commonly, please use one of Vref terminals of IC (47 pin or 52 pin) for head reference.

If both 47 pin and 52 pin of IC are connected, rush current give the great damage to IC. The

application circuit is shown in figure 3.

43

44

45

–+

46

R/F

47 VREF(L)

48

49 GND

50 GND

51

52 VREF(R)

R/F

53

54

–+

55

56

Figure 3 Application Circuit

Rev.4, Jun. 1999, page 18 of 66

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