TRF3722_15 Datasheet, PDF (23/67 Pages) Texas Instruments – TRF3722 Quadrature Modulator with Integrated PLL and VCO

www.ti.com
TRF3722
SLWS245A – MAY 2014 – REVISED JUNE 2014
7.18 Typical Characteristics - PLL/VCO
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.
-25
T_A = -40GC
T_A = 25GC
-50
T_A = 85GC
-75
-100
-125
-150
-175
500 1k
10k
100k
1M
Offset Frequency (Hz)
10M 40M
D087
Figure 76. Open Loop Phase Noise at 450 MHz vs
Temperature
-25
T_A = -40GC
T_A = 25GC
-50
T_A = 85GC
-75
-100
-125
-150
-175
500 1k
10k
100k
1M
Offset Frequency (Hz)
10M 40M
D089
-25
V_CC = 3.15V, 4.75V
V_CC = 3.30V, 5.00V
-50
V_CC = 3.45V, 5.25V
-75
-100
-125
-150
-175
500 1k
10k
100k
1M
10M 40M
Offset Frequency (Hz)
D088
Figure 77. Open Loop Phase Noise at 450 MHz vs Supply
-25
-50
-75
-100
V_CC = 3.15V, 4.75V
V_CC = 3.30V, 5.00V
V_CC = 3.45V, 5.25V
-125
-150
-175
500 1k
10k
100k
1M
Offset Frequency (Hz)
10M 40M
D090
Figure 78. Open Loop Phase Noise at 900 MHz vs
Temperature
-25
T_A = -40GC
T_A = 25GC
-50
T_A = 85GC
-75
-100
-125
-150
-175
500 1k
10k
100k
1M
Offset Frequency (Hz)
10M 40M
D091
Figure 79. Open Loop Phase Noise at 900 MHz vs Supply
-25
V_CC = 3.15V, 4.75V
V_CC = 3.30V, 5.00V
-50
V_CC = 3.45V, 5.25V
-75
-100
-125
-150
-175
500 1k
10k
100k
1M
Offset Frequency (Hz)
10M 40M
D092
Figure 80. Open Loop Phase Noise at 1800 MHz vs
Temperature
Figure 81. Open Loop Phase Noise at 1800 MHz vs Supply
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: TRF3722
Submit Documentation Feedback
23