參數(shù)資料
型號(hào)： LT1793IS8#TRPBF
廠商： Linear Technology
文件頁數(shù)： 1/12頁
文件大小： 0K
描述： IC OPAMP PREC JFET LOWNOIS 8SOIC
標(biāo)準(zhǔn)包裝： 2,500
放大器類型： J-FET
電路數(shù)： 1
轉(zhuǎn)換速率： 3.4 V/µs
增益帶寬積： 4.2MHz
電流 - 輸入偏壓： 4pA
電壓 - 輸入偏移： 250µV
電流 - 電源： 4.2mA
電壓 - 電源，單路/雙路(±)： ±4.5 V ~ 20 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SO
包裝： 帶卷 (TR)
1
LT1793
Low Noise,
Picoampere Bias Current,
JFET Input Op Amp
1kHz Output Voltage Noise
Density vs Source Resistance
SOURCE RESISTANCE (
)
10k
1k
100
10
1
100
10k
100k
1M
1k
10M
1793 TA02
TOTAL
1kHz
VOLTAGE
NOISE
DENSITY
(nV/
√
Hz)
100M 1G
–
+
VN
RSOURCE
TA = 25°C
VS = ±15V
VN
SOURCE
RESISTANCE
ONLY
VN =
√(V
OP AMP)
2 + 4kTRS + 2qIBRS2
The LT
1793 achieves a new standard of excellence in
noise performance for a JFET op amp. For the first time low
voltage noise (6nV/
√Hz) is simultaneously offered with
extremely low current noise (0.8fA/
√Hz), providing the
lowest total noise for high impedance transducer applica-
tions. Unlike most JFET op amps, the very low input bias
current (3pA typ) is maintained over the entire common
mode range which results in an extremely high input resis-
tance (1013
). When combined with a very low input ca-
pacitance (1.5pF) an extremely high input impedance
results, making the LT1793 the first choice for amplifying
low level signals from high impedance transducers. The
low input capacitance also assures high gain linearity when
buffering AC signals from high impedance transducers.
The LT1793 is unconditionally stable for gains of 1 or more,
even with 1000pF capacitive loads. Other key features are
250
V VOS and a voltage gain over 4 million. Each indi-
vidual amplifier is 100% tested for voltage noise, slew rate
(3.4V/
s) and gain-bandwidth product (4.2MHz).
Specifications at
±5V supply operation are also provided.
For an even lower voltage noise please see the LT1792 data
sheet.
s
Input Bias Current, Warmed Up: 10pA Max
s
100% Tested Low Voltage Noise: 8nV/
√Hz Max
s
A Grade 100% Temperature Tested
s
Offset Voltage Over Temp: 1mV Max
s
Input Resistance: 1013
s
Very Low Input Capacitance: 1.5pF
s
Voltage Gain: 1 Million Min
s
Gain-Bandwidth Product: 4.2MHz Typ
s
Guaranteed Specifications with
±5V Supplies
s
Photocurrent Amplifiers
s
Hydrophone Amplifiers
s
High Sensitivity Piezoelectric Accelerometers
s
Low Voltage and Current Noise Instrumentation
Amplifier Front Ends
s
Two and Three Op Amp Instrumentation Amplifiers
s
Active Filters
, LTC and LT are registered trademarks of Linear Technology Corporation.
1793 TA01
R1
1M
C1
2pF
–
+
LT1097
R2C2 > C1R1
CD = PARASITIC PHOTODIODE CAPACITANCE
VOUT = 100mV/WATT FOR 200nm WAVE LENGTH
330mV/
WATT FOR 633nm WAVE LENGTH
R5
10k
D2
1N914
V –
V +
R4
1k
D1
1N914
R3
1k
6
7
4
3
2 –
+
LT1793
V +
V –
C2 0.022
F
HAMAMATSU
S1336-5BK
(908) 231-0960
VOUT
R2
100k
CD
2N3904
Low Noise Light Sensor with DC Servo
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
相關(guān)PDF資料
PDF描述
LT1793IS8#TR IC OPAMP PREC JFET LONOISE 8SOIC
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