SL1019P Datasheet, PDF (4/10 Pages) AUK corp – AM TUNER SYSTEM

SL1019P
Electrical Characteristics(continued)
Characteristics
Symbol
Test Condition
Input Voltage at Signal
Meter Output 1V
Local OSC Buffer Output
Quieting sensitivity
Detection Output Variation
V_IN
V_SM = 1V
V_OSC (BUF) -
QS
S/N = 20dB
Δ V_OD Input 74dBμ →130dBμ
Min. Typ. Max. Unit
18 24 30 dBμ
320 380
-
25
- 0.2
- mVrms
- dBμ
-
dB
Wide-Band AGC On State
Input
Interference1.4MHz Non mod.
WB_AGC Reception 1MHz quiescent.
-
82
- dBμ
Input for ANT Damping ON.
Local OSC Variation
within broadcast band
Signal Meter Band
Selectivity
IF Interference
Image Frequency
Interference
Δ V_osc
V_OSCL - V_OSCH
V_SM-BW1
V_SM-BW2
SEL
IF.I.
IM.I.
74dBμ input, frequency
at which output is reduced
to 1/2
74dBμ input, frequency
at which output is reduced
to 1/10
30% mod ± 10kHz,
WB_AGC : “OFF”
fr = 600kHz,
WB_AGC : “OFF”
fr = 1400KHz,
WB_AGC : “OFF”
-
15
- mVrms
- ±1.5 - KHz
-
-
4.5/+7
-
KHz
-
43
-
dB
- 77.5 -
dB
-
52
-
dB
Information in using IC
1. Use the bias condition in “RF V_CC ≤ IF V_CC“
2. Avoid coupling between the antenna tuning circuit and the local OSC.
3. Connect detection capacitor (C₁₅) between pin13(output) and pin14(V_CC) so that no
leakage of the IF signal to the GND line occurs. If the capacitor C₁₅ is connected to GND,
the S/N ratio and the usable sensitivity may get worse. Radiation from C₁₅ may cause
harmonics in the IF signal to return to the RF stage, and the result may lead to more
tweet interference. So, connect C₁₅ as close to pin 13,14 as possible. Consider the
direction of the capacitor and separate it from the ANT circuit.
4. Use a semi-fixed resistor for R₉ with V_SM considered.
5. Consider the following conditions when designing the coils. The table is the input level
at each pin at which the detection output at f_m =400Hz 30% mod becomes -25 dBm.
KSI-W020-000
4