HA12181FP Datasheet, PDF (7/21 Pages) Hitachi Semiconductor – AM Radio Noise Reduction System

HA12181FP
Electrical Characteristics (Tentative) (V_CC = 8.2 V, Ta = 25°C, Pin 3 input: Vin = 100
mVrms, f = 1 KHz, Pin 16 input: Vin = 74 dBµ, fc = 450 KHz, fm = 1 KHz, m = 30%)
Item
Supply current
Output voltage
Total harmonic distortion
Signal-to-noise ratio
Symbol Min
I_CC
—
Vout
70
THD1 —
S/N (1) 60
Strong input total harmonic THD2 —
distortion
Recovered output voltage V_O (AF) 50
Recovered output signal-to- S/N (2) 35
noise-ratio
Noise suppression ratio
NSR
35
Typ Max Unit Test conditions
11.0 —
mA No input signal, IC only
95
120 mVrms Pin 3 input only
0.06 0.3 %
75
—
dB
Pin 3 input Vin = 100 mVrms
(Reference), Rg = 10 KΩ
1.0 2.5 %
Pin 3 input Vin = 500 mVrms
78
120 mVrms Pin 16 input only
45
—
dB
46
—
dB
Input the waveform below.
Pin 3 input Vin = 100 mVrms
(Reference) no input sine wave
Pin 16 Input
100mV
2ms
10µs
Figure 1 Input Waveform at Measurement of Noise Suppression Ratio
Rev.2, Jun. 1997, page 7 of 21