NJM2537
- 2 -
Ver.2003-12-09
■ ABSOLUTE MAXIMUM RATINGS (T
a
=25°C)
PARAMETER SYMBOL RATINGS UNIT
Supply voltage V
CC
4.0 V
Power Dissipation P
D
300 mW
Operating Temperature Range T
opr
-30 to +85 °C
Storange Temperature Range T
stg
-40 to +125 °C
■ ELECTRICAL CHARACTERISTICS (V
+
=1.4V, f
C
=21.7MHz, fIF=455kHz, fmod=600Hz, fdev=±4kHz, T
a
=25°C)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
No Signal Operating Current I
CCq
- 1.2 1.5 mA
Battery Saving I
CCS
- 0 5 µA
Operating Current Mixer Gain GMIX After Ceramic Filter 11 14.5 18 dB
Mixer Intercept Point IP - 103 - dBµVEMF
Mixer Input Resistance R
in
MIX - 5 - kΩ
Mixer Output Resistance R
O
MIX - 2 - kΩ
IF Amplifier Input Resistance R
in
IF - 2 - kΩ
S / N 1 S / N 1 MIXER Input, V
I
=60dBµVEMF - 63 - dB
S / N 2 S / N 2 IF Input, V
I
=60dBµVEMF - 63 - dB
S / N 3 S / N 3 IF Input, V
I
=22dBµVEMF - 25 - dB
-3dB Limiting Sensitivity 1 LIM1 MIXER Input - 12 17 dBµVEMF
-3dB Limiting Sensitivity 2 LIM2 IF Input - 22 27 dBµVEMF
Demodulated Output Level Vod IF Input, V
I
=60dBµVEMF 30 46 65 mVrms
AM Rejection Ratio AMR IF Input, V
I
=60dBµVEMF, AM=30% - 50 - dB
Duty Ratio at Wave Shaped Output DR IF Input, V
I
=60dBµVEMF 40 50 60 %
RSSI Output Voltage V
rssi
IF Input, V
I
=65dBµVEMF 0.48 0.62 0.76 V
RSSI Output Resistance R
rssi
- 62 - kΩ
Quick Charge / Discharge Current I
ch
GND, 0.18V 40 70 115 µA
Alarm Detection Voltage Valm 1.05 1.10 1.15 V
Regulator Output Voltage Vreg RL=430Ω 0.95 1.00 1.05 V
Low level Output Voltage
of VALM Terminal
ValmL IL=100µA - 0.1 0.4 V
High Level Leak Current
of VALM Terminal
IalmH - 0 2 µA
Low Level Output Voltage
of FSK-OUT Terminal
VfskL IL=100µA - 0.1 0.4 V
High Level Leak Current
of FSK-OUT Terminal
IfskH - 0 2 µA
Low Level Output Voltage
of REG-OUT Terminal
VregL IL=100µA - - 0.6 V
