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| TPIC82000 Datasheet, PDF (88/92 Pages) Texas Instruments – Tire Pressure Monitoring System TX Module | |||
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TPIC82000 Series
SLDS189 â MAY 2012
www.ti.com
5.7 BB Modulator and RF PA
TA = â40°C to 125°C, VDD = 1.5 V to 3.5 V, except 25°C < TA< 125°C, 1.75 V ⥠VDD (unless otherwise specified)
PARAMETERS (1)
PIN NAME TEST CONDITIONS
MIN
TYP
MAX
fTXC1
fTXC2
Carrier Frequency (FSK
Center Frequency)
315 MHz
434 MHz
RFOUT
RFOUT
fXTAL = 19.707894 MHz,
DIV = 1/16(2)
fXTAL = 19.707894 MHz,
DIV = 1/22(2)
314.977 314.980 314.983
433.917 433.920 433.923
fOF1
Minimum Carrier Offset
Adjustment Frequency
315 MHz
RFOUT fXTAL = 19.707894 MHz
â700
fOF2
Maximum Carrier Offset
Adjustment Frequency
434 MHz
RFOUT fXTAL = 19.707894 MHz
700
Pout
Output Power (After
adjustment to 5 dBm)
315 MHz
434 MHz
RFOUT
TA = 25°C, VDD = 3 V,
Load = 50 Ω
Load = 50 Ω
4
5
6
1 (3)
5
7
0.5 (3)
5
7
Fdr
Fda
Fdstep
Frequency Deviation Range
Frequency Deviation Accuracy
Frequency Shift Adjustment Step
Fspeed Data Speed
RFOUT
RFOUT
RFOUT
RFOUT
fXTAL = 19.707894 MHz,
FSK mode ã
fXTAL = 19.707894 MHz
fXTAL = 19.707894 MHz,
At register setting:
ModScale <7:0> = 8,
ModRAMAdd <5:0> = 31,
FSK/ASK mode
fXTAL = 19.707894 MHz,
At register setting :
ModScale <7:0> = 4,
ModRAMAdd <5:0> = 31
FSK mode only
â150
â3
150
3
1.2
9.62
9.93 10.26
19.25 19.87 20.53
TA = 25°C, VDD = 3 V,
Fobw Occupied Bandwidth
RFOUT
Load = 50 Ω,
Span = 3 MHz, 99%,
400
RBW = 30 kHz
ETXS
ETXS Spurious
315 MHz
RFOUT
RFOUT
F < 315.25 MHz,
On the test board,
TA = 25°C, VDD = 3 V,
Load = 50 Ω
f > 315.25 MHz,
On the test board,
TA = 25°C, VDD = 3 V,
Load = 50Ω
â25
ã
â30
On the test board,
ETXS
434 MHz
RFOUT TA = 25°C, VDD = 3 V,
â25
Load = 50 Ω
UNIT
MHz
kHz
kHz
dBm
dBm
dBm
kHz
kHz
kHz
K bits/s
kHz
dBc
(1) For the electrical characteristic of the BB modulator and RF PA:
The 315 MHz characteristic is applied for TPIC820XX3.
The 434 MHz characteristic is applied for TPIC820XX4.
(2) With register setting: ModRAMData <7:0> (0xC9) = 28, ModOffset <7:0> (0xD1) = 65 at 315 MHz band, 65 at 434 MHz band.
(3) 25°C < TA < 125°C, 1.75 V ⤠VDD
5.8 LF Receiver
TA = â40°C to 125°C, VDD = 1.5 V to 3.5 V (unless otherwise specified)
PARAMETERS
PIN NAME TEST CONDITIONS
fLF
Carrier Frequency
ModASK AM Modulation Degree(1)
LFIN
LFIN
TA = 25ºC, VDD = 3 V
Strig1a Minimum Input Sensitivity1
LFIN
For Protocol 1b
Strig1b Minimum Input Sensitivity2
LFIN
For Protocol 1a, 1c, 2
Strig2 Maximum Input Sensitivity
LFIN
For Protocol 1a, 1b, 1c, 2
LFosc
LFsn
LF Oscillator Frequency
Signal-to-noise ratio(1)
LFIN
After Software Adjustment
TA = 25ºC, VDD = 3 V
MIN
120
50%
303
285
6
TYP MAX UNITS
125 130 kHz
100%
0.5 1.2 mVpp
0.7 1.7 mVpp
mVpp
300 360 kHz
dB
(1) Design specified
88
ELECTRICAL CHARACTERISTICS
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Copyright © 2012, Texas Instruments Incorporated
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