Datasheet

Data Sheet AD8335
Rev. B | Page 9 of 28
–25
–20
–15
–10
–5
0
5
10
15
20
25
OFFSET VOLTAGE (mV)
1.0 1.50 0.5 2.0 2.5 3.0
V
GAIN
(V)
04976-014
+85°C, HIGH
+85°C, LOW
–40°C, LOW
–40°C, HIGH
+25°C, LOW
+25°C, HIGH
Figure 15. Differential Output Offset Voltage vs. V
GAIN
at Three Temperatures
–25
–20
–15
–10
–5
0
5
10
15
20
25
OFFSET VOLTAGE (mV)
1.0 1.50 0.5 2.0 2.5 3.0
V
GAIN
(V)
04976-015
Figure 16. Absolute Offset vs. V
GAIN
at VOHx and VOLx Pins
Relative to VCMx Pins
1M100k 10M 1G
0.1
1
10
100
OUTPUT IMPEDANCE (Ω)
FREQUENCY (Hz)
04976-016
V
IN
= 10mV p-p
VOHx
VOLx
Figure 17. Output Resistance at VOHx and VOLx Pins vs. Frequency
1M 10M 1G
INPUT IMPEDANCE (Ω)
FREQUENCY (Hz)
04976-017
10
100
1k
R
FB
= 2.5kΩ
R
FB
= 1kΩ
R
FB
= 499Ω
R
FB
= 249Ω
R
SH
= 49Ω, C
SH
= 22pF
R
SH
=
∞
, C
SH
= 0pF
Figure 18. Preamp Input Resistance vs. Frequency for
Various Values of R
FB
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
CROSSTALK (dB)
04976-018
25j
50j
100j
–75j
–50j
–25j
0Ω
17Ω
50Ω
150Ω
STOP
1GHz
START
100kHz
V
IN
= 10mV p-p
100MHz
Figure 19. Smith Chart S11 vs. Frequency, 100 kHz to 1 GHz
0
50
100
150
200
250
OUTPUT REFERRED NOISE (nV/ Hz)
1.0 1.50 0.5 2.0 2.5 3.0
V
GAIN
(V)
04976-019
HLxx = HIGH
HLxx = LOW
R
S
= 0Ω
R
FB
=
∞
Figure 20. Output Referred Noise vs. V
GAIN
(See Figure 50)