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17
I/Q inputs
Input impedance 50 Ω or 600 Ω
Full scale input
1
√ I
2
+ Q
2
= 0.5 V
rms
I/Q bandwidth using external I/Q source (ALC off)
2
I/Q bandwidth using internal I/Q source (Options 001, 002, 601, 602)
Specifications for I/Q Characteristics
1. The optimum I/Q input level is √ I
2
+Q
2
= 0.5 V
rms
, I/Q drive level affects EVM, origin offset, spectral regrowth, and noise floor. Typically, level accuracy
with ALC on will be maintained with drive levels between 0.25 and 1.0 V
rms
.
2. Parentheses denote typical performance.
[dB]
-100 0-50
Frequency offset from carrier [MHz]
50-150 150100
3.00
1.00
-1.00
-3.00
-5.00
-7.00
-9.00
-11.00
-13.00
-15.00
1800 MHz carrier
850 MHz carrier
1900 MHz carrier
2200 MHz carrier
3.00
1.00
-1.00
-3.00
-5.00
-7.00
-9.00
-11.00
-13.00
-15.00
Frequency offset from carrier [MHz]
-50
-30 -10 10
30 50
850 MHz
1800 MHz
1900 MHz
2200 MHz
5700 MHz
[dB]
I/Q modulation bandwidth