Datasheet

LTC6957-1/LTC6957-2/
LTC6957-3/LTC6957-4
13
6957f
For more information www.linear.com/LTC6957-1
Typical perForMance characTerisTics
Additive Phase Noise
vs Supply Voltage Additive Phase Noise at 122.88MHz AM to PM Conversion
t
PD
vs Temperature t
PD
vs Temperature t
PD
vs Supply Voltage
Additive Phase Noise
vs Input Frequency
Additive Phase Noise
vs Amplitude
Additive Phase Noise
vs Temperature
LTC6957-2
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–145
–140
–130
1k 10k 100k
69571234 G29
–135
–160
–150
–155
1M
–10dBm, FILTA = L, FILTB = H
0dBm, FILTA = H, FILTB = L
10dBm, FILTA = FILTB = L
SINGLE-ENDED 100MHz SINE WAVE INPUT
SEE APPLICATIONS INFORMATION
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–160
–155
–130
1k 10k 100k
69571234 G30
–135
–145
–140
–150
1M
125°C
–55°C
SINGLE-ENDED SINE WAVE INPUT,
100MHz AT 7dBm (500mV
RMS
)
FILTA = FILTB = L
25°C
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–160
–155
–130
1k 10k 100k
69571234 G31
–135
–145
–140
–150
1M
3.45V
3.3V
3.15V
SINGLE-ENDED SINE WAVE INPUT,
100MHz AT 7dBm (500mV
RMS
)
FILTA = FILTB = L
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–145
–140
–130
1k 10k 100k
69571234 G32
–135
–160
–150
–155
1M
7dBm, FILTA = FILTB = L
0dBm, FILTA = H, FILTB = L
SINGLE-ENDED SINE WAVE INPUT
INPUT AMPLITUDE (dBm)
–10
–5
NORMALIZED PHASE (DEG)
–1
0
5
–8 –6 –4 –2 0 2 4 6 8
69571234 G33
4
–4
–2
2
3
1
–3
10
125°C
–55°C
EACH CURVE NORMALIZED TO 0° AT 0dBm
25°C
f
IN
= 300MHz
V
+
= 3.3V
TEMPERATURE (°C)
–55
0.5
t
PD
(ns)
4.0
–35 –15 85 10545 655 25
69571234 G34
1.0
3.0
1.5
125
FILTA = L, FILTB = H
FILTA = H, FILTB = L
FILTA = FILTB = L
100Ω LOAD
FILTA = FILTB = H
TEMPERATURE (°C)
–55
0.825
t
PD
(ns)
0.875
0.850
0.925
0.950
–35
–15 5
25
45 65
85 105
69571234 G35
0.900
125
V
+
= 3.6V
V
+
= 3.3V
V
+
= 3.0V
FILTA = FILTB = L
100Ω LOAD
SUPPLY VOLTAGE (V)
3
0.84
t
PD
(ns)
0.88
0.86
0.92
0.96
0.94
3.1
3.2 3.3
3.4
3.5
69571234 G36
0.90
3.6
125°C
25°C
–55°C
FILTA = FILTB = L
100Ω LOAD
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–145
–140
–130
1k 10k 100k
69571234 G28
–135
–160
–150
–155
1M
300MHz
100MHz
153.6MHz
SINGLE-ENDED SINE WAVE INPUT
AT 7dBm (500mV
RMS
)
FILTA = FILTB = L