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LMX2820 데이터시트(PDF) 8 Page - Texas Instruments

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부품명 LMX2820
상세설명  LMX2820 22.4-GHz Wideband PLLatinum??RF Synthesizer With Phase Synchronization and JESD204B Support
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LMX2820
SNAS783 – JUNE 2020
www.ti.com
Product Folder Links: LMX2820
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
Electrical Characteristics (continued)
3.15 V
≤ VCC ≤ 3.45 V, –40°C ≤ TA ≤ 85°C. Typical values are at VCC = 3.3 V, 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
(11) Not tested in production. Ensured by characterization. Allowable temperature drift refers to programming the device at an initial
temperature and allowing this temperature to drift WITHOUT reprogramming the device, and still have the device stay at lock. This
change could be up or down in temperature and the specification does not apply to temperatures that go outside the recommended
operating temperatures of the device.
(12) Measured with one of the RF output differential pair pins, the unused pin is 50-Ω terminated. See Initialization Setup and Power on
Sequencing for details.
(13) One RF output is active. Measured with JSO-51-471/6S balun.
TCL|
Allowable temperature
drift(11)
VCO not being re-calibrated;
–40°C
≤ TA ≤ 85°C
125
°C
RF OUTPUT
fOUT
RF output frequency
43.75
22400
MHz
POUT
Single-ended output
power(12)
fOUT = 22 GHz
OUTx_PWR
= 7
0
dBm
fOUT = 11 GHz
4
fOUT ≤ 5.5 GHz
6
H1/2
1/2 harmonic(13)
fOUT = 2 x fVCO = 11 GHz to 22 GHz
−40
dBc
H3/2
3/2 harmonic
fOUT = 2 x fVCO = 11 GHz to 22 GHz
−45
H2
Second harmonic
fVCO = fOUT = 11 GHz
−20
fVCO = 11 GHz; fOUT = 5.5 GHz
−35
fOUT = 2 x fVCO = 11 GHz to 22 GHz
−25
H3
Third harmonic
fVCO = fOUT = 11 GHz
−27
fVCO = 11 GHz; fOUT = 5.5 GHz
−14
PMUTE
Single-ended output power
when output is muted(12)
fOUT = 22 GHz
−32
dBm
fOUT = 11 GHz
−32
fOUT = 5.5 GHz
−53
tMUTE
Mute enable time
fOUT = 11 GHz
200
ns
tunMUTE
Mute disable time
fOUT = 11 GHz
200
isoCH
Channel to channel isolation
fOUTA = 11 GHz; fOUTB = 5.5 GHz;
POUTA = POUTB = 0 dBm
–50
dBc
PHASE SYNCHRONIZATION
fOSCinSYNC
OSCin input frequency with
SYNC
Category 3
5
200
MHz
Categories 1 and 2
5
800
DIGITAL INTERFACE (CE, SCK, SDI, CS#, PSYNC, MUTE)
VIH
High-level input voltage
1.2
VCC
V
VIL
Low-level input voltage
0.6
IIH
High-level input current
CS#, MUTE, CE
25
µA
SCK, SDI, PSYNC
60
IIL
Low-level input current
−1
VOH
High-level output voltage
Load current = –5 mA
MUXout, LD
VCC–0.4
V
VOL
Low-level output voltage
Load current = 5 mA
0.4
6.6 Timing Requirements
3.15 V
≤ VCC ≤ 3.45 V, –40°C ≤ TA ≤ 85°C. Typical values are at VCC = 3.3 V, 25°C (unless otherwise noted)
MIN
NOM
MAX
UNIT
SERIAL INTERFACE WRITE TIMING
fSCK
SCK frequency
1 / (tCWL+tCWH)
50
MHz


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