LA1145, 1145M
Sample Application Circuit
50 µs
DC
emphasis
capacitor
Mute driver
output
S-meter
output
L1: 81N-014A (Sumida)
L2: 81N-014B (Sumida)
Unit (resistance: Ω, capacitance: F)
LS1140 and LS1145 Compared
Parameter
Package
LA1140
SIP-16
LA1145
Remarks
SIP-18Z
MFP-20
IF amp, limiter
Quadrature detector
AF preamp
Direct-coupled
C-coupled
j
j
j
j
j
j
j
AFC output
Signal meter output
j
C
Improved linearity, variable S-meter gradient
Improved temperature stability,
Band muting
j
j
C
V
dependent
BE
IF count buffer output
SD circuit
–
j
j
Common with STRQ
For the LA1140, Coupled with the soft muting
function.
–
78 dBµ
25 dBµ (fixed)
j
S/N
86 dB
–3 dBµ limiting sensitivity variable,
independent of soft muting function
3 dBµ limiting sensitivity
Weak signal noise output
25 to 40 dBµ
j
C
No. 2725-5/17
SANYO [ SANYO SEMICON DEVICE ]
