參數(shù)資料
型號: LA7289
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PDIP24
封裝: SDIP-24
文件頁數(shù): 11/11頁
文件大?。?/td> 213K
代理商: LA7289
No. 5642-9/11
LA7289
Continued from the preceding page.
Continued on the next page.
Pin No.
Function
Function description
Internal circuit
12
Line amplifier line input
Inputs the EE and record signals.
The reference input is set by the resistors
R1 and R2. The amplifier gain is fixed at
21.0 dB. Since pin 12 has the high input
impedance of 120 k
, a 0.1 F ceramic
capacitor can be used as the coupling
capacitor.
13
ALC detector input
Inputs the line amplifier output signal.
The ALC level is determined by
the resistors R1 and R2.
14
Line amplifier output
Output impedance
→ 50 (typical)
15
Record amplifier input
Inputs the record signal from the line
amplifier.
The record current is set by the resistors
R1 and R2. Since pin 15 has the high input
impedance of 120 k
, a 0.1 F ceramic
capacitor can be used as the coupling
capacitor.
16
EP/LP/SP control
If the pin 16 voltage is:
3.0 to 6.0 V: EP mode
1.8 to 2.6 V: LP mode
0.0 to 0.8 V: SP mode.
Switch on state pin numbers:
REC
PB
EP
24
LP
24, 6
6
SP
6
17
PB/LINE/TUNER control
If the pin 17 voltage is:
3.6 to 6.0 V: PB mode
1.8 to 2.6 V: LINE mode
0.0 to 1.0 V: TUNER mode.
A06827
A06829
A06831
A06832
A06834
A06835
A06833
A06830
A06828
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