LTC5599
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TC = 25°C. VCC = 3.3V, EN = 3.3V, VCTRL = 3.3V, PLO = 0dBm, BBPI, BBMI, BBPQ,
BBMQ common mode DC voltage VCMBB = 1.4VDC, I and Q baseband input signal = 2MHz, 2.1MHz, 1VP-P(DIFF, I or Q), I and Q 90°
shifted, lower sideband selection, all registers set to default values, unless otherwise noted. Test circuit is shown in Figure 13.
SYMBOL PARAMETER
CONDITIONS
2LO
3LOFT
Signal Powers at 2xLO
LO Feedthrough at 3xLO
Maximum of 2fLO – 2fBB; 2fLO – fBB; 2fLO + fBB,
2fLO + 2fBB
3LO
Signal Powers at 3xLO
Maximum of 3fLO – fBB; 3fLO + fBB
BW1dBBB –1dB Baseband Bandwidth
RSOURCE = 50Ω, Differential
BW3dBBB –3dB Baseband Bandwidth
RSOURCE = 50Ω, Differential
fLO = 500MHz, fRF1 = 497.9MHz, fRF2 = 498MHz, Register 0x00 = 0x2D
S22(ON)
RF Port Return Loss
fLO(MATCH) LO Match Frequency Range
S11 < –10dB
Gain
Conversion Voltage Gain
20 • Log (VRF(OUT)(50Ω)/VIN(DIFF)(I or Q))
POUT
Absolute Output Power
1VP-P(DIFF) CW Signal, I and Q
OP1dB Output 1dB Compression
OIP2
Output 2nd Order Intercept
(Note 5)
OIP3
Output 3rd Order Intercept
(Note 6)
NFloor
SB
RF Output Noise Floor
Side-Band Suppression
No Baseband AC Input Signal (Note 3)
POUT = 3dBm (Note 3)
(Note 7)
LOFT
Carrier Leakage (LO Feedthrough) (Note 7)
EN = Low (Note 7)
2LOFT
LO Feedthrough at 2xLO
2LO
3LOFT
Signal Powers at 2xLO
LO Feedthrough at 3xLO
Maximum of 2fLO – 2fBB; 2fLO – fBB; 2fLO + fBB,
2fLO + 2fBB
3LO
Signal Powers at 3xLO
Maximum of 3fLO – fBB; 3fLO + fBB
BW1dBBB –1dB Baseband Bandwidth
RSOURCE = 50Ω, Differential
BW3dBBB –3dB Baseband Bandwidth
RSOURCE = 50Ω, Differential
fLO = 900MHz, fRF1 = 897.9MHz, fRF2 = 898MHz, Register 0x00 = 0x12
S22(ON)
RF Port Return Loss
fLO(MATCH) LO Match Frequency Range
S11 < –10dB
Gain
Conversion Voltage Gain
20 • Log (VRF(OUT)(50Ω)/VIN(DIFF)(I or Q))
POUT
Absolute Output Power
1VP-P(DIFF) CW Signal, I and Q
OP1dB Output 1dB Compression
OIP2
Output 2nd Order Intercept
(Note 5)
OIP3
Output 3rd Order Intercept
(Note 6)
NFloor
RF Output Noise Floor
No Baseband AC Input Signal (Note 3)
SB
Side-Band Suppression
(Note 7)
LOFT
Carrier Leakage (LO Feedthrough) (Note 7)
EN = Low (Note 7)
2LOFT
LO Feedthrough at 2xLO
2LO
Signal Powers at 2xLO
Maximum of 2fLO – 2fBB; 2fLO – fBB; 2fLO + fBB,
2fLO + 2fBB
MIN
TYP
MAX
UNITS
–51
dBc
–57
dBm
–10.7
dBc
15
MHz
28
MHz
–26
180 to 1900
–7.7
–3.7
5.0
63.6
20.8
–156.7
–156.0
–52.6
–51.5
–67.5
–61
–51
–62
–11.8
29
57
dB
MHz
dB
dBm
dBm
dBm
dBm
dBm/Hz
dBm/Hz
dBc
dBm
dBm
dBm
dBc
dBm
dBc
MHz
MHz
–28
223 to 1902
–8.9
–4.9
4.1
63.5
18.4
–155.6
–61.3
–58.6
–62.3
–59
–51
dB
MHz
dB
dBm
dBm
dBm
dBm
dBm/Hz
dBc
dBm
dBm
dBm
dBc
5599f
For more information www.linear.com/LTC5599
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