AM-1435MC Murata Power Solutions Inc, AM-1435MC Datasheet - Page 3

• Manufacturer Part Number: AM-1435MC
• Description: Amplifer
• Manufacturer: Murata Power Solutions Inc

DATEL
TYPICAL CONNECTION AND COMPENSATION
The typical connection diagram (above) shows the AM-1435
in a unity-gain inverting confi guration. When used in any
conventional operational-amplifi er confi guration, the AM-1435
(as a non-inverting amplifi er) requires a noise gain of at least
two (noise gain = 1 + R4/R1).
The 2pF compensation capacitor, C1, at pin 3 is required
for stable operation when the noise gain is less than 10.
Compensation for bias current is provided by R2 and its value
is determined by the formula:
®
120
100
-20
80
60
40
20
0
100 200 500 1k
Figure 3. Gain and Phase vs. Frequency
PHASE ANGLE
10k
(Uncompensated)
R2 =
FREQUENCY (Hz)
100k
(R1) x (R4)
R1 + R4
INPUT
1M
GAIN
®
10M
1kW
• 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: [phone] • www.datel.com • e-mail: [e-mail]
R1
100M
500W
2pF
R2
C1
1μF
C2
Figure 2. Typical Connection Diagram
0°
40°
60°
100°
140°
180°
3
7
8
+
1μF
C3
+
+
+15V
–15V
–
12
4
14
5
1kW
The offset adjust potentiometer R3 and the compensation
capacitor C4 are optional. Note, however, that C4 should
be implemented when driving capacitive loads to prevent
oscillation of the output stage.
Operation of the AM-1435 at low impedances requires careful
attention to include the feedback resistor as a part of the total
output load.
R3
1kW
R4
+
6
1
OFFSET
ADJUST
(OPT.)
Ultra-Fast, Wideband Operational Amplifi ers
1μF
C4 (OPT.)
120
100
-20
80
60
40
20
0
100 200 500 1k
2
13
Figure 4. Gain and Phase vs. Frequency
PHASE ANGLE
GAIN
10k
(Compensated 2pF)
FREQUENCY (Hz)
01 Apr 2011 MDA_AM-1435.B02 Page 3 of 4
100k
OUTPUT
1M
10M
AM-1435
100M
180°
140°
100°
60°
20°
0°