CA3140AS INTERSIL [Intersil Corporation], CA3140AS Datasheet - Page 17

• Manufacturer Part Number: CA3140AS
• Description: 4.5MHz, BiMOS Operational Amplifier with MOSFET Input/Bipolar Output
• Manufacturer: INTERSIL [Intersil Corporation]

20V
FIGURE 26. SINGLE SUPPLY, ABSOLUTE VALUE, IDEAL FULL
FIGURE 27. TEST CIRCUIT AMPLIFIER (30dB GAIN) USED FOR
GAIN
R
FOR X
R
BW (-3dB) = 140kHz
TOTAL NOISE VOLTAGE
(REFERRED TO INPUT ) = 48 V (TYP)
3
3
P-P
=
=
10k
=
X
---------------- - R
1 X
Input BW (-3dB) = 290kHz, DC Output (Avg) = 3.2V
=
+
R
------ -
R
–
10k
1M
0.5
2
1
X
R
R
S
1
2
WAVE RECTIFIER WITH ASSOCIATED
WAVEFORMS
WIDEBAND NOISE MEASUREMENT
0.75
---------- -
=
0.5
-------------- -
10k
5k
X
1
3
2
=
=
---------------------------- -
R
+15V
2
3
-15V
=
15k
+
1
-
CA3140
5k
R
R
------ -
R
R
R
8
2
2
1
2
CA3140
+
7
4
-
3
+
1
R
3
17
0.01 F
5
0.01 F
+15V
100k
OFFSET
ADJUST
7
4
6
6
1N914
30.1k
1k
0.1 F
NOISE VOLTAGE
OUTPUT
R
3
OUTPUT
0
INPUT
0
10k
PEAK
ADJUST
10k
CA3140, CA3140A
FIGURE 28C. INPUT-OUTPUT DIFFERENCE SIGNAL SHOWING
FIGURE 28. SPLIT SUPPLY VOLTAGE FOLLOWER TEST
INPUT
(Measurement made with Tektronix 7A13 differential amplifier.)
Bottom Trace: Input; 50mV/Div., 200ns/Div.
Bottom Trace: Input Signal; 5V/Div., 5 s/Div.
Center Trace: Difference Signal; 5mV/Div., 5 s/Div.
10k
FIGURE 28B. SMALL SIGNAL RESPONSE
Top Trace: Output; 50mV/Div., 200ns/Div.
Top Trace: Output Signal; 5V/Div., 5 s/Div.
CIRCUIT AND ASSOCIATED WAVEFORMS
SETTLING TIME
3
2
FIGURE 28A. TEST CIRCUIT
+
CA3140
-
0.05 F
+15V
-15V
2k
7
4
0.1 F
0.1 F
6
100pF
BW (-3dB) = 4.5MHz
SIMULATED
LOAD
SR = 9V/ s
2k