TRF3765 Datasheet, PDF (11/51 Pages) Texas Instruments – Integer-N/Fractional-N PLL with Integrated VCO

TRF3765
www.ti.com
SLWS230C – SEPTEMBER 2011 – REVISED JANUARY 2012
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, V_CC = 3.3 V, VCC_TK = 3.3 V, LO_Out_1 (single ended), buffer 2, 3, 4 = off, VCO_BIAS = 400 µA;
BUFOUT_BIAS = 600 µA, all other registers set per recommended programming in Serial Programming Interface Register
Definitions section, and standard operating condition, unless otherwise noted.
CLOSED-LOOP PHASE NOISE vs TEMPERATURE
(725 MHz, VCC_TK = 3.3 V, Fractional Mode)
CLOSED-LOOP PHASE NOISE vs TEMPERATURE
(942.5 MHz, VCC_TK = 3.3 V, Fractional Mode)
−60
−70 ^{Fractional Mode (EN_FRAC = 1)}
LO_Out = 725 MHz
−80
−90
T_A = −40°C
T_A = 25°C
T_A = 85°C
−60
−70 ^{Fractional Mode (EN_FRAC = 1)}
LO_Out = 942.5 MHz
−80
−90
T_A = −40°C
T_A = 25°C
T_A = 85°C
−100
−100
−110
−110
−120
−120
−130
−130
−140
−140
−150
−150
−160
−170
1k
*See Note 3
10k
100k
1M
Frequency (Hz)
Figure 17.
10M
40M
G023
−160
−170
1k
*See Note 3
10k
100k
1M
Frequency (Hz)
Figure 18.
10M
40M
G022
CLOSED-LOOP PHASE NOISE vs TEMPERATURE
(1880 MHz, VCC_TK = 3.3 V, Fractional Mode)
−60
−70 ^{Fractional Mode (EN_FRAC = 1)}
LO_Out = 1880 MHz
−80
−90
T_A = −40°C
T_A = 25°C
T_A = 85°C
−100
−110
−120
−130
−140
−150
−160
−170
1k
*See Note 3
10k
100k
1M
Frequency (Hz)
10M
40M
G021
Figure 19.
CLOSED-LOOP PHASE NOISE vs TEMPERATURE
(2120 MHz, VCC_TK = 3.3 V, Fractional Mode)
−60
−70 ^{Fractional Mode (EN_FRAC = 1)}
LO_Out = 2120 MHz
−80
−90
T_A = −40°C
T_A = 25°C
T_A = 85°C
−100
−110
−120
−130
−140
−150
−160
−170
1k
*See Note 3
10k
100k
1M
Frequency (Hz)
10M
40M
G020
Figure 20.
CLOSED-LOOP PHASE NOISE vs TEMPERATURE
(2650 MHz, VCC_TK = 3.3 V, Fractional Mode)
−60
−70 ^{Fractional Mode (EN_FRAC = 1)}
LO_Out = 2650 MHz
−80
−90
T_A = −40°C
T_A = 25°C
T_A = 85°C
−100
−110
−120
−130
−140
−150
−160
−170
1k
*See Note 3
10k
100k
1M
Frequency (Hz)
10M
40M
G017
Figure 21.
CLOSED-LOOP PHASE NOISE vs TEMPERATURE
(3500 MHz, VCC_TK = 3.3 V, Fractional Mode)
−60
−70 ^{Fractional Mode (EN_FRAC = 1)}
LO_Out = 3500 MHz
−80
−90
T_A = −40°C
T_A = 25°C
T_A = 85°C
−100
−110
−120
−130
−140
−150
−160
−170
1k
*See Note 3
10k
100k
1M
Frequency (Hz)
10M
40M
G018
Figure 22.
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