lt5572 Linear Technology Corporation, lt5572 Datasheet - Page 3

• Manufacturer Part Number: lt5572
• Description: 1.5ghz To 2.5ghz High Linearity Direct Quadrature Modulator
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
BBPI, BBMI, BBPQ, BBMQ inputs 0.5V
P
SYMBOL
LO Input (LO)
f
P
S
S
NF
G
IIP3
Baseband Inputs (BBPI, BBMI, BBPQ, BBMQ)
BW
V
R
I
P
IP1dB
ΔG
Δϕ
Power Supply (V
V
I
I
t
t
Enable (EN), Low = Off, High = On
Enable
Sleep
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Specifi cations 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 confi guration of Figure 7.
Note 4: At each of the four baseband inputs BBPI, BBMI, BBPQ and BBMQ.
Note 5: V
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.
LO
DC(IN)
CC(ON)
CC(OFF)
ON
OFF
RF(OUT)
LO
11(ON)
11(OFF)
CMBB
LOBB
CC
LO
IN
LO
I/Q
I/Q
BB
LO
BBPI
= –10dBm, unless otherwise noted. (Note 3)
– V
PARAMETER
LO Frequency Range
LO Input Power
LO Input Return Loss
LO Input Return Loss
LO Input Referred Noise Figure
LO to RF Small-Signal Gain
LO Input 3rd Order Intercept
Baseband Bandwidth
DC Common Mode Voltage
Differential Input Resistance
Baseband Static Input Current
Carrier Feedthrough to BB
Input 1dB Compression Point
I/Q Absolute Gain Imbalance
I/Q Absolute Phase Imbalance
Supply Voltage
Supply Current
Supply Current, Sleep Mode
Turn-On Time
Turn-Off Time
Input High Voltage
Input High Current
Input Low Voltage
CC
BBMI
)
= 1V
DC
, V
BBPQ
– V
BBMQ
DC
, baseband input frequency = 2MHz, I and Q 90° shifted (upper sideband selection).
= 1V
DC
.
CONDITIONS
EN = High, P
EN = Low (Note 6)
at 2GHz (Note 5)
at 2GHz (Note 5)
at 2GHz (Note 5)
–3dB Bandwidth
Externally Applied (Note 4)
(Note 4)
P
Differential Peak-to-Peak (Notes 7, 18)
EN = High
EN = 0V
EN = Low to High (Note 11)
EN = High to Low (Note 12)
EN = High
EN = 5V
EN = Low
OUT
V
= 0 (Note 4)
CC
= 5V, EN = High, T
LO
= 0dBm (Note 6)
Note 11: RF power is within 10% of fi nal 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 of the desired signal at
f = LO + BB for BB = 2MHz and LO = 2GHz.
Note 18: The input voltage corresponding to the output P1dB.
A
= 25°C, f
LO
= 2GHz, f
MIN
–10
4.5
1
RF
1.5 to 2.5
–5.3
14.5
–0.5
0.07
0.25
= 2002MHz, P
TYP
–15
460
–20
–39
120
230
0.5
2.8
0.9
1.3
25
90
0
5
MAX
5.25
145
0.6
0.5
LT5572
50
5
LO
= 0dBm.
V
P-P(DIFF)
UNITS
3
dBm
dBm
dBm
MHz
5572f
GHz
Deg
mA
kΩ
dB
dB
dB
dB
µA
dB
µA
µA
µs
µs
V
V
V
V