HA12219NT Datasheet, PDF (27/29 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck

HA12219NT
Altered Reference Voltage vs. External Resistance
400
V_CC
Vref
1
7
R21
300 ^VCC
R22
V_CC = 12V (Vref = 1/2 V_CC)
200
100
0
100
−23
−24
−25
−26
−27
−28
10
1k
10k
100k
1M
Resistance (Ω) (R21, R22 same)
RETURN Level vs. Frequency
4
Vref
Pin 5 or 6
Vout
820Ω
+V
22µ
Vin
Vin = 1Vrms
Vin = 800mVrms
Vin = 600mVrms
Vin = 400mVrms
100
1k
10k
Frequency (Hz)
100k
Rev.2, Jul. 1998, page 27 of 29