Datasheet

5
ISO120/121
TYPICAL PERFORMANCE CURVES (CONT)
T
A
= +25°C; V
S1
= V
S2
= ±15V; and R
L
= 2kΩ, unless otherwise noted.
1
Frequency (Hz)
40
160
140
120
100
80
60
IMR (dB)
100 10k 1M10 1k 100k
IMR vs FREQUENCY
1k
Frequency (Hz)
0
10nF


1000pF

C
1
SYNCHRONIZATION RANGE at 25°C
±4Vp SINE WAVE INPUT TO EXT OSC
10k 100k 1M
C
2
≥ C
1
Typical
Free Run
Frequency
0
f
IN
(Hz)

0

–20

–40
V
OUT
/V
IN
(dB)
SIGNAL RESPONSE vs CARRIER FREQUENCY
f
C
2f
C
3f
C
0000f
c
/2 f
C
/2 f
C
/2
f
OUT
(Hz)
–20dB/dec (for comparison only)
0.1f
–3dB
Normalized Frequency
0
12
10
8
6
4
2
Noise, e
N
(µV/ Hz)
NOISE vs SMALL SIGNAL BANDWIDTH
0.2f
–3dB
0.5f
–3dB
f
–3dB
C
2
= 2C
1
C
2
= C
1
*
*C
1
≤ 5000pF
FPO
BLEED
TO EDGE
OF BOX
Output Voltage (V)
SINE RESPONSE
(f = 2kHz, C
2
= 0)
Time (µs)
5000 1000
+10
0
–10
Output Voltage (V)
SINE RESPONSE
(f = 20kHz, C
2
= 0)
Time (µs)
500 100
+10
0
–10