Texas Instruments TRF3722 EVM, Manual

Page: 24 / 69

Offset Frequency (Hz)
P
ha
se Nois
e (
dBc/H
z)
-180
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
500 1k 10k 100k 1M 10M 40M
D098
V
CC
= 3.15V, 4.75V
V
CC
= 3.30V, 5.00V
V
CC
= 3.45V, 5.25V
Offset Frequency (Hz)
P
ha
se Nois
e (
dBc/H
z)
-180
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
500 1k 10k 100k 1M 10M 40M
D099
T
A
= -40 q C
T
A
= 25
q
C
T
A
= 85
q
C
Offset Frequency (Hz)
P
ha
se Nois
e (
dBc/H
z)
-180
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
500 1k 10k 100k 1M 10M 40M
D096
V
CC
= 3.15V, 4.75V
V
CC
= 3.30V, 5.00V
V
CC
= 3.45V, 5.25V
Offset Frequency (Hz)
P
ha
se Nois
e (
dBc/H
z)
-180
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
500 1k 10k 100k 1M 10M 40M
D097
T
A
= -40 q C
T
A
= 25 q C
T
A
= 85
q
C
Offset Frequency (Hz)
P
ha
se Nois
e (
dBc/H
z)
-175
-150
-125
-100
-75
-50
-25
500 1k 10k 100k 1M 10M 40M
D215
450 MHz
900 MHz
1800 MHz
2150 MHz
2700 MHz
3600 MHz
4000 MHz
Offset Frequency (Hz)
P
ha
se Nois
e (
dBc/H
z)
-180
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
500 1k 10k 100k 1M 10M 40M
D095
T
A
= -40 q C
T
A
= 25 q C
T
A
= 85 q C
24
TRF3722
SLWS245B – MAY 2014 – REVISED FEBRUARY 2017 www.ti.com
Product Folder Links: TRF3722
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Copyright © 2014–2017, Texas Instruments Incorporated
Typical Characteristics - PLL/VCO (continued)
Unless specified all plots were created using TRF3722EVM, VCC = 3.3 V, VCC_TK = 5 V, and T
A
= 25°C. Measured at
LO_OUTP with 50 Ω bias resistor and 47 pF series capacitor. Modulator section powered down. Reference frequency is set
to 61.44 MHz. Optimized bias settings as per Table 16 .
Figure 82. Open Loop Phase Noise vs Frequency Figure 83. 450 MHz Frac-N (Closed Loop Phase Noise) vs
Temperature
Figure 84. 450 MHz Frac-N (Closed Loop Phase Noise) vs
Supply
Figure 85. 1800 MHz Frac-N (Closed Loop Phase Noise) vs
Temperature
Figure 86. 1800 MHz Frac-N (Closed Loop Phase Noise) vs
Supply
Figure 87. 2150 MHz Frac-N (Closed Loop Phase Noise) vs
Temperature