參數(shù)資料
型號(hào): CA3440
廠商: Intersil Corporation
英文描述: 63kHz, Nanopower, BiMOS Operational Amplifiers
中文描述: 63kHz,Nanopower,BiMOS運(yùn)算放大器
文件頁數(shù): 3/5頁
文件大?。?/td> 76K
代理商: CA3440
3-148
Schematic Diagram
Application Information
As R
SET
is increased, I
SET
and the standby power decrease
while the BW/SR also decrease.
Operating at a +5V single supply, the CA3440 exhibits the
following characteristics:
The CA3440 is pin compatible with the 741 except that pins
1 and 5 (typical negative nulling pins) must be connected
either directly to pin 4 or to a negative nulling potentiometer.
In addition, pin 8, the I
SET
terminal, must be returned to
either ground or -V via R
SET
.
Q
P1
Q
P2
D
1
D
2
Q
P3
Q
P4
D
4
D
3
Q
P5
Q
P6
Q
1
D
5
Q
N10
Q
N9
Q
P12
Q
P11
30pF
Q
P8
Q
P7
2
3
INVERTING
INPUT
NON-INVERTING
Q
3
Q
4
1
Q
5
Q
6
D
6
5
R
1
200
R
2
30
6
Q
7
R
3
30
4
8
7
V+
OUTPUT
V-
I
SET
Q
2
FIGURE 1. NANOPOWER OP AMP (SUPPLY CURRENT PRO-
GRAMMABLE USING R
SET
), 1pA TYPICAL INPUT
BIAS CURRENT, 4.0V TO 15V SUPPLY
FIGURE 2. NANOPOWER OP AMP (USABLE STANDBY
POWER vs PROGRAMMING RESISTOR R
SET
)
FET
INPUT
BIAS
FET/
BIPOLAR
OUTPUT
-
+
I
SET
R
SET
STAGE 1
HIGH GAIN
100dB
STAGE 2
BUFFER
LOW Z
OUTPUT
+5V
3
1
5
4
8
+
CA3440
-
2
7
6
I
SET
R
SET
R
SET
1M
STANDBY
POWER
BW
SR
250
μ
W
164kHz
0.17V/
μ
s
10M
25
μ
W
27kHz
0.017V/
μ
s
100M
2.5
μ
W
2.6kHz
0.0017V/
μ
s
1G
250nW
78kHz
0.00017V/
μ
s
CA3440
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