NJM2211M NJR, NJM2211M Datasheet - Page 6

• Manufacturer Part Number: NJM2211M
• Description: IC FSK DEMOD/ TONE DECODER S014
• Manufacturer: NJR

Specifications of NJM2211M

• Function: Demodulator
• Current - Supply: 11mA
• Voltage - Supply: 4.5 V ~ 20 V
• Package / Case: 14-DMP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Gain: -
• Noise Figure: -
• P1db: -
• Lo Frequency: -
• Rf Frequency: -

■ DESIGN EQUATIONS
See Figure 1 for Definitions of Components.
1. VCO Center Frequency, f
2. Internal Reference Voltage, V
3. Loop Lowpass Filter Time Constant, τ :
4. Loop Damping, ξ :
5. Loop Tracking Bandwidth, ±∆f/f
6. FSK Date Filter Time Constant, τ
7. Loop Phase Detector Conversion Gain, K
8. VCO conversion Gain, K
9. Total Loop Gain K
10. Peak Phase-Detector Current, I
- 6 -
(K
φ
is the differential DC voltage across pins 10 and 11, per unit of phase error at phase-detector input) :
τ=R1C1
∆f/f
τ
K
I
ξ
K
K
f
V
F
A
0
T
=R
R
φ
0
( )
=
(
Hz
(in radians per second per volt =2πKφK
mA
(in
0
(in
=




F
=R0 / R1
C
 +


Hertz
)
volts
=
C
F
C
=
0
1
R
2
V
V




0
S
1
25



REF
C
per



per
τ
1
4
0
−
:



650
radian)
volt)
0
mV
0
, is the amount of change in VCO frequency per unit of DC voltage change at pin 11 :
:
=
R
C
=
(measured at pin 10) :
0
0
( )(
R
F
−
A
:
−
:
1
:
2
1
V
π
REF
V
=4 / C
REF
φ
)
:
0
R
1
0
Ver.2003-12-09