TX4915 View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
TX4915 Datasheet PDF : 9 Pages
| |||
the wireless IC company
TX4915
Electrical Characteristics
(VDD1, DD2 = 2.2 to 5 V, VSS, SS1, SS2 = 0 V, TA = –40 to +85 °C unless otherwise noted)
TX4915 Capability(Simulated)
Parameter
Symbol
Condition
Value
Power supply
Supply Voltage
Total dc Current (normal operation)
Total dc Current (stand-by mode)
Overall
Frequency Range
Modulation
Modulation frequency
Incidental FM
Output Power
ON/OFF Ratio
PLL and Prescaler
Prescaler Divie Ratio
VCO gain, KVCO
PLL Phase Noise
Harmonics
Reference Frequency
crystal Frequency Spurs
Max crystal Rs
Max crystal Motional Inductance
Charge pump current
Power Down Control
Power “ON”
Power “OFF”
Turn On Time
Turn Off Time
VCC1,VCC2
IDC
Istandby
ICP
VTXEN
VTXEN
min.
typ.
2.2
3
TXEN=high , 50% Duty Cycle
10kHz data applied to the MODIN
input.RM OD IN (R3)=3kΩ
TXEN = low
100
AM/ASK
50Ω load
Frequency and board layout depen-
dent
10KHz Offset, 50kHz loop band-
width
100KHz Offset, 50kHz loop band-
width
with output tuning
64/128
20
50KHz PLL loop bandwidth
For a typ. 1ms turn-on time
For a typ. 1ms turn-on time
KPD=100uA/2Π
100
Vcc-0.3V
1
1
max.
5
1
960
17
0.3
2
2
Unit
V
mA
µA
MHz
MHz
kHz P-P
dBm
dB
MHz/V
dBc/Hz
dBc/Hz
dBc
MHz
MHz
Ω
mH
µA
V
V
ms
ms
Page 4
March 2000
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