TDA4321XS Datasheet, PDF (14/16 Pages) List of Unclassifed Manufacturers – FM-IF IC with counter output, analog STS, field strength indicator, noise detector and mute setting

FS: 04/93
SIEMENS AG
Page 14
IC-SPECIFICATION
TDA 4321 XS
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Diagrams
V_F (V) ^{VF Characteristic}
D2
5
2.5
∆ V_F
V_Fmax
V_Fmin
∆ V_iIF
-80
-60
-40
-20
M1
M2
0 U_iIF (dBm)
Test points to determine VF linearity
VF - Linearity:is determined at 25 °C
Slope
V_F (M2) - V_F (M1)
: m = ––––––––––––––––––
40 dB
The tolerance range of the VF - linearity is determined by
two parallel lines:
V_Fmax = V_F (M1) + m (M + 60 dB+ 1dB)
V_Fmin = V_F (M1) + m (M + 60 dB - 1dB)
The V_F values within the V_F dynamic range
(M_VFmin≤M≤M_VFmax)
must be inside the predetermined tolerance range:
V_Fmin ≤ V_F ( M ) ≤ V_Fmax
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HL DOK
V66047-S1665-B100-G1
5.10.98