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MC33493DTB

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
Power Management
PLL Tuned UHF Transmitter for Data Transfer Applications, Rev. 1.7
Freescale Semiconductor 7
Figure 4. Signals Waveform and Timing Definition
7 Power Management
When the battery voltage falls below the shutdown voltage threshold (V
SDWN
) the entire circuit switches off. After this
shutdown, the circuit is latched until a low level is applied on pin ENABLE (see State 4 of the state machine).
8 Data Clock
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 Electrical Characteristics
Unless otherwise specified, voltage range V
cc
=[V
shutdown
;3.6 V], temperature range TA=[–40 °C;+ 125 °C], R
ext
=12 kΩ±5%,
RF output frequency f
carrier
= 433.92 MHz, reference frequency f
reference
= 13.560 MHz, output load RL = 50 Ω±1%
(Figure 9). Values refer to the circuit shown in the recommended application schematics: Figure 12 shows OOK modulation
and Figure 14 shows FSK modulation. Typical values reflect average measurement at VCC =3 V, TA = 25 °C.
ENABLE
DATACLK
DATA
State 1 State 2 State 3
t
DATACLK_settling >
t
PLL_lock_in
t
PLL_lock_in
MODE=0 (OOK)
MODE=1 (FSK)
State 1
f
carrier
f
carrier
f
high
f
low
f
high
f
low
c : PLL locked
f
high
c
RFOUT
PLL Tuned UHF Transmitter for Data Transfer Applications, Rev. 1.7
Electrical Characteristics
Freescale Semiconductor8
Table 5. Electrical Characteristics
Parameter Test Conditions, Comments
Limits
Unit
Min. Typ. Max.
1
General Parameters
1.1
Supply current in
standby mode
T
A
≤ 25 °C — 0.1 5 nA
1.2
T
A
=60°C — 7 30 nA
1.3
T
A
= 85 °C — 40 100 nA
1.4
T
A
= 125 °C — 800 1700 nA
1.5
Supply current in
transmission mode
315 and 434 bands,
OOK and FSK modulation,
continuous wave, T
A
=25°C
— 11.6 13.5 mA
1.6
315 and 434 bands,
DATA=0, –40 °C ≤ T
A
≤ 125 °C
—4.46.0 mA
1.7
868 MHz band,
DATA=0, –40 °C ≤ T
A
≤ 125 °C
—4.66.2 mA
1.8
315 and 434 bands,
OOK and FSK modulation,
continuous wave, –40 °C ≤ T
A
≤125 °C
— 11.6 14.9 mA
1.9
868 MHz band,
OOK and FSK modulation,
continuous wave, –40 °C ≤T
A
≤ 125 °C
— 11.8 15.1 mA
1.10
Supply voltage — 3 3.6 V
1.11
Shutdown voltage threshold T
A
= –40 °C — 2.04 2.11 V
1.12
T
A
= –20 °C — 1.99 2.06 V
1.13
T
A
= 25 °C — 1.86 1.95 V
1.14
T
A
= 60 °C — 1.76 1.84 V
1.15
T
A
= 85 °C — 1.68 1.78 V
1.16
T
A
= 125 °C — 1.56 1.67 V
2
RF Parameters
2.1
R
ext
value 12 — 21 kΩ
2.2
Output power 315 and 434 MHz bands,
with 50 Ω matching network
—5—dBm
2.3
868 MHz band,
with 50 Ω matching network
—1—dBm
2.4
315 and 434 MHz bands,
–40 °C ≤ T
A
≤ 125 °C
–3 0 3 dBm
2.8
868 MHz band,
–40 °C ≤T
A
≤ 125 °C
–7 –3 0 dBm
2.12
Current and output power
variation vs. R
ext
value
315 and 434 MHz bands,
with 50 Ω matching network
— –0.35
–0.25
—dB/kΩ
mA/kΩ
Electrical Characteristics
PLL Tuned UHF Transmitter for Data Transfer Applications, Rev. 1.7
Freescale Semiconductor 9
2.13
Harmonic 2 level 315 and 434 MHz bands,
with 50 Ω matching network
— –34 — dBc
2.14
868 MHz band,
with 50 Ω matching network
— –49 — dBc
2.15
315 and 434 MHz bands — –23 -17 dBc
2.16
868 MHz band — –38 -27 dBc
2.17
Harmonic 3 level 315 and 434 MHz bands,
with 50 Ω matching network
— –32 — dBc
2.18
868 MHz band,
with 50 Ω matching network
— –57 — dBc
2.19
315 and 434 MHz bands — –21 –15 dBc
2.20
868 MHz band — –48 –39 dBc
2.21
Spurious level
@ f
carrier
± f
DATACLK
315 and 434 MHz bands — –36 –24 dBc
2.22
868 MHz band — –29 –17 dBc
2.23
Spurious level
@ f
carrier
± f
reference
315 MHz band — –37 –30 dBc
2.24
434 MHz band — –44 –34 dBc
2.25
868 MHz band — –37 –27 dBc
2.41
Spurious level
@ f
carrier
/2
315 MHz band — –62 –53 dBc
2.26
434 MHz band — –80 –60 dBc
2.27
868 MHz band — –45 –39 dBc
2.30
Phase noise 315 and 434 MHz bands,
±175 kHz from f
carrier
— –75 –68 dBc/Hz
2.31
868 MHz band,
±175 kHz from f
carrier
— –73 –66 dBc/Hz
2.32
PLL lock-in time,
t
PLL_lock_in
f
carrier
within 30 kHz from the final value,
crystal series resistor = 150 Ω
— 400 1600 µs
2.33
XTAL1 input capacitance — 1 — pF
2.34
Crystal resistance OOK modulation — 20 200 W
2.44
FSK modulation 20 50
2.35
OOK modulation depth 75 90 — dBc
2.36
FSK modulation
carrier frequency
total deviation
315 and 434 MHz bands, see note Note: — — 100 kHz
2.37
868 MHz band, see note Note: — — 200 kHz
2.38
CFSK output resistance MODE = 0, DATA = x
MODE=1, DATA=0
50 70 — kΩ
2.39
MODE=1, DATA=1 — 90 300 W
2.43
CFSK output capacitance — 1 — pF
2.40
Data rate Manchester coding — — 10 kbit/s
Table 5. Electrical Characteristics (continued)
Parameter Test Conditions, Comments
Limits
Unit
Min. Typ. Max.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

MC33493DTB

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Buy MC33493DTB
Manufacturer:
NXP / Freescale
Description:
RF Transmitter 315 434 868 MHz
Lifecycle:
New from this manufacturer.
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