參數(shù)資料
型號(hào)： OPA847IDR
英文描述： Wideband, Ultra-Low Noise, Voltage-Feedback
中文描述： 寬帶，超低噪聲，電壓反饋
文件頁(yè)數(shù)： 6/23頁(yè)
文件大?。?/td> 529K
代理商： OPA847IDR
OPA847
SBOS251C
6
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= ±5V
(Cont.)
T
A
= 25°C, G = +20V/V, R
G
= 39.2
, and R
L
= 100
, unless otherwise noted.
10
1
0
INPUT VOLTAGE AND CURRENT NOISE
Frequency (Hz)
V
√
H
C
√
H
10
1
10
2
10
3
10
4
10
5
10
6
10
7
2.7pA/
√
Hz
Current Noise
0.85nV/
√
Hz
Voltage Noise
50
45
40
35
30
25
20
2-TONE, 3RD-ORDER INTERMODULATION INTERCEPT
Frequency (MHz)
I
5
10
15
20
25
30
35
40
45
50
G = +20V/V
20dB to matched load.
750
50
OPA847
P
I
P
O
50
50
39.2
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
NONINVERTING GAIN FLATNESS TUNE
Frequency (MHz)
D
1
10
100
1000
NG = 12
NG = 14
NG = 20
NG = 18
NG = 16
V
O
= 200mV
PP
A
= +12V/V
NG = Noise Gain
External Compensation
See Figure 8
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
LOW GAIN INVERTING BANDWIDTH
Frequency (MHz)
N
1
10
100
1000
G = –8
G = –4
G = –2
G = –1
V
O
= 0.2V
PP
R
F
= 750
External Compensation
See Figure 6
100
10
1
RECOMMENDED R
S
vs CAPACITIVE LOAD
Capacitive Load (pF)
R
S
)
1
10
100
1000
G = +20V/V
29
26
23
20
17
14
FREQUENCY RESPONSE vs CAPACITIVE LOAD
Frequency (MHz)
N
1
10
100
1000
C = 22pF
C = 47pF
C = 100pF
C = 10pF
R
S
adjusted for capacitive load.
750
R
S
OPA847
V
I
V
O
50
1k
C
L
39.2
(1k
is optional.)
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