Typical operating characteristics (continued) – Rainbow Electronics MAX2038 User Manual
Page 10
MAX2038
Ultrasound VGA Integrated
with CW Octal Mixer
Typical Operating Characteristics (continued)
(Figure 7, V
CC
= V
REF
= 4.75V to 5.25V, V
GND
= 0, LOW_PWR = 0, M4_EN = 0, CW_FILTER = 1, TMODE = 0, PD = 0, CW_VG = 0,
CW_M1 = 0, CW_M2 = 0, CW mixer outputs pulled up to 11V through four separate ±0.1% 115
Ω resistors, differential mixer inputs
are driven from a low-impedance source.
CW FILTER RESPONSE
(CW_FILTER = 1)
MAX2038 toc26
FREQUENCY (MHz)
LOSS (dB)
14
12
8
10
4
6
2
-12
-10
-8
-6
-4
-2
0
2
4
-14
0
16
CW FILTER RESPONSE
(CW_FILTER = 0)
MAX2038 toc27
FREQUENCY (MHz)
LOSS (dB)
14
12
8
10
4
6
2
-25
-20
-15
-10
-5
0
5
-30
0
16
CW IMD3 vs. FREQUENCY
(MODE 1, V
RF
= 900mV
P-P DIFF
, V
CC
= V
REF
)
MAX2038 toc28
FREQUENCY (MHz)
CW IMD3 (dBc)
6
4
2
-53
-52
-51
-50
-49
-48
-47
-46
-54
0
8
4.75
5.00
5.25
INPUT-REFERRED NOISE vs. CLUTTER VOLTAGE
(MODE 4, F_CLUTTER = 1.25MHz AT 1kHz OFFSET)
MAX2038 toc29
CLUTTER VOLTAGE (V
P-P DIFF
)
INPUT-REFERRED NOISE (nV/
√
Hz)
1.5
1.0
0.5
2
4
6
8
10
12
14
0
0
2.0
10
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