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参数资料
型号： LT1169CS8#TRPBF
厂商： Linear Technology
文件页数： 10/12页
文件大小： 0K
描述： IC OPAMP JFET LONOISE DUAL 8SOIC
标准包装： 2,500
放大器类型： J-FET
电路数： 2
转换速率： 4.2 V/µs
增益带宽积： 5.3MHz
电流 - 输入偏压： 4pA
电压 - 输入偏移： 600µV
电流 - 电源： 5.3mA
电压 - 电源，单路/双路(±)： ±4.5 V ~ 20 V
工作温度： 0°C ~ 70°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
LT1169
CC
HARA TERISTICS
UW
A
TYPICALPERFOR
CE
CCIF IMD Test (Equal Amplitude
Tones at 13kHz, 14kHz)*
OUTPUT SWING (VP-P)
0.02
0.0001
INTERMODULATION
DISTORTION
(AT
1kHz)(%)
0.01
1
0.1
1
10
30
LT1169 TPC26
0.001
0.1
AV = ±10
TA = 25°C
VS = ±15V
RL = 2k
THD and Noise vs Output
Amplitude for Noninverting Gain
OUTPUT SWING (VP-P)
0.3
0.0001
TOTAL
HARMONIC
DISTORTION
+
NOISE
(%)
0.01
1
110
30
LT1169 TPC25
0.001
0.1
ZL = 2k15pF
fO = 1kHz
AV = 1, 10, 100
MEASUREMENT BANDWIDTH
= 10Hz TO 22kHz
NOISE FLOOR
AV = 100
AV = 1
AV = 10
THD and Noise vs Output
Amplitude for Inverting Gain
OUTPUT SWING (VP-P)
0.3
0.0001
TOTAL
HARMONIC
DISTORTION
+
NOISE
(%)
0.01
1
110
30
LT1169 TPC24
0.001
0.1
ZL = 2k15pF
fO = 1kHz
AV = –1, –10, –100
MEASUREMENT BANDWIDTH
= 10Hz TO 22kHz
NOISE FLOOR
AV = –100
AV = –1
AV = –10
FREQUENCY (Hz)
20
0.0001
TOTAL
HARMONIC
DISTORTION
+
NOISE
(%)
0.01
1
100
1k
10k 20k
LT1169 TPC23
0.001
0.1
ZL = 2k15pF
VO = 20VP-P
AV = –1, –10, –100
MEASUREMENT BANDWIDTH
= 10Hz TO 80kHz
NOISE FLOOR
AV = –100
AV = –1
AV = –10
THD and Noise vs
Frequency for Inverting Gain
FREQUENCY (Hz)
20
0.0001
TOTAL
HARMONIC
DISTORTION
+
NOISE
(%)
0.01
1
100
1k
10k 20k
LT1169 TPC22
0.001
0.1
ZL = 2k15pF
VO = 20VP-P
AV = 1, 10, 100
MEASUREMENT BANDWIDTH
= 10Hz TO 80kHz
NOISE FLOOR
AV = 100
AV = 10
AV = 1
THD and Noise vs
Frequency for Noninverting Gain
* SEE LT1115 DATA SHEET FOR DEFINITION OF
CCIF TESTING
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
LT1169 vs the Competition
With improved noise performance, the LT1169 dual in the
plastic DIP directly replaces such JFET op amps as the
OPA2111, OPA2604, OP215, and the AD822. The combi-
nation of low current and voltage noise of the LT1169
allows it to surpass most dual and single JFET op amps.
The LT1169 can replace many of the lowest noise bipolar
amps that are used in amplifying low level signals from
high impedance transducers. The best bipolar op amps
will eventually lose out to the LT1169 when transducer
impedance increases due to higher current noise.
The extremely high input impedance (1013
) assures that
the input bias current is almost constant over the entire
common mode range. Figure 1 shows how the LT1169
stands up to the competition. Unlike the competition, as the
input voltage is swept across the entire common mode
range the input bias current of the LT1169 hardly changes.
As a result the current noise does not degrade. This makes
the LT1169 the best choice in applications where an
amplifier has to buffer signals from a high impedance
transducer.
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