LT5568 查看數據表（PDF） - Linear Technology
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LT5568 Datasheet PDF : 16 Pages
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LT5568
ELECTRICAL CHARACTERISTICS VCC = 5V, EN = High, TA = 25°C, fLO = 850MHz, fRF = 852MHz, PLO = 0dBm.
BBPI, BBMI, BBPQ, BBMQ inputs 0.54VDC, Baseband Input Frequency = 2MHz, I&Q 90° shifted (upper side-band selection).
PRF, OUT = –10dBm, unless otherwise noted. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
LO Input (LO)
fLO
LO Frequency Range
PLO
LO Input Power
0.6 to 1.2
GHz
– 10
0
5
dBm
S11, ON
S11, OFF
NFLO
GLO
IIP3LO
LO Input Return Loss
LO Input Return Loss
LO Input Referred Noise Figure
LO to RF Small Signal Gain
LO Input 3rd Order Intercept
EN = High (Note 6)
EN = Low (Note 6)
(Note 5) at 850MHz
(Note 5) at 850MHz
(Note 5) at 850MHz
– 11.4
dB
– 2.7
dB
12.7
dB
23.8
dB
– 11.5
dBm
Baseband Inputs (BBPI, BBMI, BBPQ, BBMQ)
BWBB
VCMBB
RIN, SE
Baseband Bandwidth
DC Common Mode Voltage
Single-Ended Input Resistance
–3dB Bandwidth
(Note 4)
(Note 4)
380
MHz
0.54
V
48
Ω
PLO2BB
IP1dB
Carrier Feedthrough on BB
Input 1dB Compression Point
ΔGI/Q
I/Q Absolute Gain Imbalance
ΔϕI/Q
I/Q Absolute Phase Imbalance
Power Supply (VCC)
POUT = 0 (Note 4)
Differential Peak-to-Peak (Notes 7, 18)
– 38
dBm
4.3
VP-P, DIFF
0.07
dB
0.45
Deg
VCC
ICC, ON
ICC, OFF
tON
Supply Voltage
Supply Current
Supply Current, Sleep Mode
Turn-On Time
EN = High
EN = 0V
EN = Low to High (Note 11)
4.5
5
5.25
V
80
117
165
mA
50
μA
0.3
μs
tOFF
Turn-Off Time
Enable (EN), Low = Off, High = On
EN = High to Low (Note 12)
1.4
μs
Enable
Input High Voltage
Input High Current
EN = High
EN = 5V
1.0
V
230
μA
Sleep
Input Low Voltage
Input Low Current
EN = Low
EN = 0V
0.5
V
0
μA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Specifications over the –40°C to 85°C temperature range are
assured by design, characterization and correlation with statistical process
controls.
Note 3: Tests are performed as shown in the configuration of Figure 7.
Note 4: On each of the four baseband inputs BBPI, BBMI, BBPQ and
BBMQ.
Note 5: V(BBPI) – V(BBMI) = 1VDC, V(BBPQ) – V(BBMQ) = 1VDC.
Note 6: Maximum value within –1dB bandwidth.
Note 7: An external coupling capacitor is used in the RF output line.
Note 8: At 20MHz offset from the LO signal frequency.
Note 9: At 20MHz offset from the CW signal frequency.
Note 10: At 5MHz offset from the CW signal frequency.
Note 11: RF power is within 10% of final value.
Note 12: RF power is at least 30dB lower than in the ON state.
Note 13: Baseband is driven by 2MHz and 2.1MHz tones. Drive level is set
in such a way that the two resulting RF tones are –10dBm each.
Note 14: IM2 measured at LO frequency + 4.1MHz.
Note 15: IM3 measured at LO frequency + 1.9MHz and LO frequency +
2.2MHz.
Note 16: Amplitude average of the characterization data set without image
or LO feedthrough nulling (unadjusted).
Note 17: The difference in conversion gain between the spurious signal at
f = 3 • LO – BB versus the conversion gain at the desired signal at f = LO +
BB for BB = 2MHz and LO = 850MHz.
Note 18: The input voltage corresponding to the output P1dB.
5568f
3
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