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NJM2593V-TE1

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
NJM2593
Ver.2014-12-22
-
7
-
Pin No.
SYMBOL EQUIVARENT CIRCUIT VOLTAGE
FUNCTION
8 FSK VREF2
0.44V
FSK Reference Voltage
Output
This pin usually keeps open.
This fixed output voltage may be
available for the FSK reference
voltage of wave shaping comparator
by connecting to pin7. This usage
is effective in shaping the data
signal with continuous bits of the
same polarity, and discussed in
another document related to
applications information.
9 IF OUT
1.14V
IF Output
An external phase - shifting
capacitor is connected between
pin9 and pin10.
10 QUAD IN
1.99V
Quadrature Detector Input
An external phase - shifting coil or
ceramic discriminator is connected.
11 AF OUT
0.44V
FM Demodulated Signal Output
An external 3rd order multiple feed
- back filter (RC filter) is connected
between pin11 and pin13.
V+
8
V+
9
40u
V+
10
400
400
V+
11
18u
NJM2593
Ver.2014-12-22
-
8
-
Pin No.
SYMBOL EQUIVARENT CIRCUIT VOLTAGE
FUNCTION
12 LPF IN
0.45V
Low P
ass Filter Input
An external RC components
forms a band pass filter between
pin12 and pin13.
This terminal is biased from pin 11
though an external RC filter.
13 LPF OUT 0.45V
Low Pass Filter Output
14
CHARGE
SW
--
Quick Charge / Discharge
Control
The power supply output voltage
to pin 14 sets up the quick charge
/ discharge circuit.
Hi : ON
Low : OFF
Instead of V+, another power
source can also be used within
the limit of the rated supply
voltage.
15 FSK OUT
--
FSK Output
The FSK comparator is a wave
shaping circuit. A Filter Amplifier
output signal is inverted and wave
shaped. Instead of V+, another
power source can also be used
within the limit of the rated supply
voltage.
16
CARRIER
SENSE
--
Carrier Sense Output
This pin outputs the result of RSSI
comparator by comparing RSSI
output level with an external input
level to pin 18.
V+
12
13
6u
V+
1
4
300k
V+
15
6u
16
3u
NJM2593
Ver.2014-12-22
-
9
-
Pin No.
SYMBOL EQUIVARENT CIRCUIT VOLTAGE
FUNCTION
17 RSSI OUT
0.02V
Received Signal Strength
Indicator Output
Pin 11 outputs DC level
proportional to the log of input
signal level to pin 20.
18
SENSE
LEVEL
--
Sense Level Input
External reference voltage of
RSSI comparator
19 GND
--
Ground
20 MIX IN
1.03V
Mixer Input
The mixer is designed to work up
to 470MHz with the typical input
impedance of RinM = 4.5kΩ and
CinM = 2pF(at 21.7MHz).
Note :
1. ESD protection diodes exist between each of the following pins and V
+
.
Pin 1,2,3,5,6,7,8,9,10,11,12,13,17,18,20
2. ESD protection diodes also exist between each of the following pins and ground.
Pin 1,2,3,5,6,7,8,9,10,11,12,13,14,15,16,17,18
V+
17
50k
V+
18
20
5k
20p
5k
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

NJM2593V-TE1

Mfr. #:
Buy NJM2593V-TE1
Manufacturer:
NJR (New Japan Radio)
Description:
Modulator / Demodulator 50MHz INPUT MIXER & 450kHz FM IF DEMOD
Lifecycle:
New from this manufacturer.
Delivery:
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