S1T8528
ENHANCED-1 CHIP CT0 RF IC
ELECTRICAL CHARACTERISTICS
Characteristic
Symbol
Test Conditions
Min. Typ. Max.
Operating Voltage
Vcc
−
2.0
−
5.5
RECEIVER
( VCC = 3.6V, fC = 49.7MHz, fDEV = ± 3kHz, fMOD = 1kHz,Ta = 25°C, unless otherwise specified )
Sensitivity
(input for 12dB SINAD)
VSEN
MIX1 Matched Impedance
Input
−
0.7 2.0
Input for -3dB Limiting
VLIM
MIX1 Matched Impedance
Input
−
0.7 2.0
S/N Ratio
S/N
RFin = 1mVrms
48
55
−
Recovered Audio Output
VO(RA)
RFin = 1mVrms,
After 2nd stage LPF
147
177 207
Recovered Audio Output
Voltage Drop
VO(RAD)
Vcc = 5.5V → 2.0V
RFin = 1mVrms
−3.0 −1.5
−
Detector Output Resistance RO(DET)
RFin = 1mVrms
−
1.2
−
Detect Output Voltage
VO(DET)
RFin = 1mVrms
1.0
1.5 2.0
Detector Output Distortion
THDDET
RFin = 1mVrms
(with CCITT Filter)
−
1.0 2.5
Comparator Threshold
Voltage Difference
∆VTH
VCOMP = 360mVp-p
RHYS = 180KΩ
70
110 150
Comparator Output Voltage 1 VOH
VCOMP =360mVp-p
RHYS = 180kΩ
Vcc-0.4 −
−
Comparator Output Voltage 2 VOL
VCOMP = 360mVp-p
RHYS = 180kΩ
−
0.1 0.4
First Mixer Conversion
Voltage Gain
∆GV(1M)
VMIX1 1/2 = 1mVrms
RL = 330kΩ
12
15
18
Second Mixer Conversion
Voltage Gain
∆GV(2M)
VMIX2 = 1mVrms
RL = 1.5kΩ
18
22
26
Demodulator Bandwidth
DBW
RFin = 1mVrms
−
10
−
Limiter Input Sensitivity
VI(LIM)
Fc = 455kHz , −3dB Limiting
−
20
40
AM Rejection Ratio
AMRR
RFin = 1mVrms
AM MOD = 30% @1kHz
−
40
−
First Mixer 3rd Order
Intercept Point
IMD3
MIX1 Input 50Ω
Termination
−
− 15
−
First Mixer Input Impedance RI(1M) /
CI(1M)
Fc = 50MHz
−
690
−
7.2
First Mixer output Impedance Ro(1M)
Fc = 10.7MHz
−
330
−
Unit
V
µVrms
µVrms
dB
mVrms
dB
KΩ
V
%
mV
V
V
dB
dB
kHz
uVrms
dB
dBm
Ω
pF
Ω
8