MC33493MOD315 Freescale Semiconductor, MC33493MOD315 Datasheet - Page 7

• Manufacturer Part Number: MC33493MOD315
• Description: BOARD EVALUATION FOR MC33493 TX
• Manufacturer: Freescale Semiconductor
• Type: Transmitterr

Specifications of MC33493MOD315

• Contents: Module and Misc Hardware
• For Use With/related Products: MC33493 315 MHz RF Module
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

7
When the battery voltage falls below the shutdown voltage threshold (V
shutdown, the circuit is latched until a low level is applied on pin ENABLE (see State 4 of the state machine).
8
At start-up, data clock timing is valid after the data clock settling time. Because the clock is switched off asynchronously, the
last period duration cannot be guaranteed.
9
Unless otherwise specified, voltage range V
RF output frequency f
(Figure
and
Freescale Semiconductor
ENABLE
DATACLK
DATA
RFOUT
Figure 14
MODE=0 (OOK)
MODE=1 (FSK)
9). Values refer to the circuit shown in the recommended application schematics:
Power Management
Data Clock
Electrical Characteristics
shows FSK modulation. Typical values reflect average measurement at VCC =3 V, TA = 25 °C.
State 1
carrier
PLL Tuned UHF Transmitter for Data Transfer Applications, Rev. 1.7
= 433.92 MHz, reference frequency f
t
DATACLK_settling >
Figure 4. Signals Waveform and Timing Definition
t
State 2
PLL_lock_in
cc
=[V
t
PLL_lock_in
shutdown
;3.6 V], temperature range TA=[–40 °C;+ 125 °C], R
f
high
:
reference
PLL locked
f
carrier
f
SDWN
low
= 13.560 MHz, output load RL = 50 Ω ±1%
) the entire circuit switches off. After this
State 3
f
high
Figure 12
f
low
f
carrier
shows OOK modulation
f
high
Power Management
ext
=12 kΩ ± 5%,
State 1
7