Datasheet

LTC6957-1/LTC6957-2/
LTC6957-3/LTC6957-4
15
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
LTC6957-3/LTC6957-4
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–145
–140
–130
1k 10k 100k
69571234 G46
–135
–160
–150
–155
1M
300MHz
100MHz
SINGLE-ENDED SINE WAVE INPUT
AT 7dBm (500mV
RMS
)
FILTA = FILTB = L
153.6MHz
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–145
–140
–130
1k 10k 100k
69571234 G47
–135
–160
–150
–155
1M
10dBm, FILTA = FILTB = L
–10dBm, FILTA = L, FILTB = H
0dBm, FILTA = H, 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 G48
–135
–145
–140
–150
1M
25°C
125°C
–55°C
SINGLE-ENDED SINE WAVE INPUT,
100MHz AT 7dBm (500mV
RMS
)
FILTA = FILTB = L
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–160
–155
–130
1k 10k 100k
69571234 G49
–135
–145
–140
–150
1M
3.15V
3.45V
3.3V
SINGLE-ENDED SINE WAVE INPUT,
100MHz AT 7dBm (500mV
RMS
)
V
+
= V
DD
FILTA = FILTB = L
OFFSET FREQUENCY (Hz)
100
–165
PHASE NOISE (dBc/Hz)
–145
–140
–130
1k 10k 100k
69571234 G50
–135
–160
–150
–155
1M
7dBm, FILTA = FILTB = L
SINGLE-ENDED SINE WAVE INPUT
0dBm, FILTA = H, FILTB = L
INPUT AMPLITUDE (dBm)
–10
–5
NORMALIZED PHASE (DEG)
–1
0
5
–8 –6 –4 –2 0 2 4 6 8
69571234 G51
4
–4
–2
2
3
1
–3
10
125°C
–55°C
25°C
EACH CURVE NORMALIZED TO 0° AT 0dBm
f
IN
= 300MHz
V
+
= V
DD
= 3.3V
TEMPERATURE (°C)
–55
0.5
t
PD
(ns)
4.0
–35 –15 85 10545 655 25
69571234 G52
1.0
3.0
1.5
125
FILTA = FILTB = L
FILTA = L, FILTB = H
FILTA = H, FILTB = L
FILTA = FILTB = H
FALLING EDGE
TEMPERATURE (°C)
–55
0.75
t
PD
(ns)
1.15
–35 –15 85 10545 655 25
69571234 G53
1.00
1.10
1.05
0.85
0.80
0.95
0.90
125
FALLING EDGE
RISING EDGE
FILTA = FILTB = L
V
DD
SUPPLY VOLTAGE (V)
2.4
0.94
t
PD
(ns)
1.06
2.55 2.7 3.453.15 3.32.85 3
69571234 G54
1.00
1.04
1.02
0.98
0.96
3.6
V
+
= 3.45V
V
+
= V
DD
RISING EDGE