参数资料
型号: LT1792IS8#TR
厂商: Linear Technology
文件页数: 10/12页
文件大小: 0K
描述: IC OPAMP PREC JFET LONOISE 8SOIC
标准包装: 2,500
放大器类型: J-FET
电路数: 1
转换速率: 3.4 V/µs
增益带宽积: 5.6MHz
电流 - 输入偏压: 300pA
电压 - 输入偏移: 200µV
电流 - 电源: 4.2mA
电压 - 电源,单路/双路(±): ±4.5 V ~ 20 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SO
包装: 带卷 (TR)
7
LT1792
CC
HARA TERISTICS
UW
A
TYPICALPERFOR
CE
THD and Noise vs Output
Amplitude for Noninverting Gain
OUTPUT SWING (VP-P)
0.001
TOTAL
HARMONIC
DISTORTION
+
NOISE
(%)
0.01
0.1
1
110
30
1792 G18
0.0001
0.3
ZL = 2k 15pF, fO = 1kHz
AV = 1, 10, 100
MEASUREMENT BANDWIDTH
= 10Hz TO 22kHz
AV = 100
AV = 10
AV = 1
THD and Noise vs Output
Amplitude for Inverting Gain
OUTPUT SWING (VP-P)
0.001
TOTAL
HARMONIC
DISTORTION
+
NOISE
(%)
0.01
0.1
1
110
30
1792 G19
0.0001
0.3
ZL = 2k 15pF, fO = 1kHz
AV = –1, –10, –100
MEASUREMENT BANDWIDTH
= 10Hz TO 22kHz
AV = –100
AV = –10
AV = –1
TEMPERATURE (
°C)
–75
10
OUTPUT
CURRENT
(mA)
15
20
25
30
–25
50
25
100
1792 G20
35
40
–50
0
75
125
SINK
SOURCE
VS = ±15V
Short-Circuit Output Current
vs Temperature
TEMPERATURE (
°C)
–75
3
SUPPLY
CURRENT
(mA)
4
–25
50
25
100
1792 G21
5
–50
0
75
125
VS = ±15V
VS = ±5V
Supply Current vs Temperature
Figure 1
2
3
1
5
VOS = ±10mV
50k
15V
– 15V
1792 F01a
4
6
7
+
2
3
1
5
VOS = ±1mV
50k
10k
15V
– 15V
1792 F01b
4
6
7
+
(b)
(a)
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
The LT1792 may be inserted directly into OPA124, AD743,
AD745, AD645, AD544 and AD820 sockets with improved
noise performance. Offset nulling will be compatible with
these devices with the wiper of the potentiometer tied to
the negative supply (Figure 1a). No appreciable change in
offset voltage drift with temperature will occur when the
device is nulled with a potentiometer ranging from 10k to
200k. Finer adjustments can be made with resistors in
series with the potentiometer (Figure 1b).
Being a low voltage noise JFET op amp, the LT1792 can
replace many bipolar op amps that are used in amplifying
low level signals from high impedance transducers. The
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