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參數資料
| 型號： | LT2079IS#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數： | 1/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP MICROPOWER QUAD 14SOIC |
| 標準包裝： | 2,500 |
| 放大器類型： | 通用 |
| 電路數： | 4 |
| 轉換速率： | 0.1 V/µs |
| 增益帶寬積： | 200kHz |
| 電流 - 輸入偏壓： | 6nA |
| 電壓 - 輸入偏移： | 80µV |
| 電流 - 電源： | 47µA |
| 電壓 - 電源，單路/雙路(±)： | 2.2 V ~ 36 V，±1.1 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 14-SO |
| 包裝： | 帶卷 (TR) |
1
LT 2078/LT 2079
20789fa
Micropower, Dual and
Quad, Single Supply,
Precision Op Amps
FEATURES
s
Supply Current per Amplifier: 50
A Max
s
Offset Voltage: 70
V Max
s
Offset Current: 250pA Max
s
Voltage Noise: 0.6
VP-P, 0.1Hz to 10Hz
s
Current Noise: 3pAP-P, 0.1Hz to 10Hz
s
Offset Voltage Drift: 0.4
V/°C
s
Gain Bandwidth Product: 200kHz
s
Slew Rate: 0.07V/
s
Single Supply Operation
Input Voltage Range Includes Ground
Output Swings to Ground while Sinking Current
No Pull-Down Resistors Needed
s
Output Sources and Sinks 5mA Load Current
s
SO Package with Standard Pinout
DESCRIPTION
U
The LT
2078 is a micropower dual op amp in 8-pin small
outline, standard surface mount package, and LT2079 is
a micropower quad op amp offered in the standard 14-pin
surface mount package. Both devices are optimized for
single supply operation at 5V.
±15V specifications are also
provided.
Micropower performance of competing devices is achieved
at the expense of seriously degrading precision, noise,
speed and output drive specifications. The design effort of
the LT2078/LT2079 was concentrated on reducing sup-
ply current without sacrificing other parameters. The
offset voltage achieved is the lowest on any dual or quad
nonchopper stabilized op amp––micropower or other-
wise. Offset current, voltage and current noise, slew rate
and gain bandwidth product are all two to ten times better
than on previous micropower op amps.
Both the LT2078/LT2079 can be operated from a single
supply (as low as one lithium cell or two NiCd batteries).
The input range goes below ground. The all NPN output
stage swings to within a few millivolts of ground while
sinking current––no power consuming pull-down resis-
tors are needed. For applications requiring DIP packages
refer to the LT1078/LT1079.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
Battery or Solar-Powered Systems
Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry
s
Micropower Sample-and-Hold
s
Thermocouple Amplifier
s
Micropower Filters
TYPICAL APPLICATION
U
Single Battery, Micropower, Gain = 100, Instrumentation Amplifier
Distribution of Input Offset Voltage
INPUT OFFSET VOLTAGE (
V)
–120
NUMBER
OF
OP
AMPS
0
80
2078/79 TA02
–80
–40
40
800
700
600
500
400
300
200
100
0
120
VS = 5V, 0V
5000 OP AMPS
–
+
–
+
INVERTING
–INPUT
1M
2
3
1
6
5
7
A
1/2 LT2078
10.1k
1M
10.1k
NONINVERTING
+INPUT
B
1/2 LT2078
4
8
3V
(Li-Ion)
OUT
TYPICAL PERFORMANCE
INPUT OFFSET VOLTAGE = 40
V
INPUT OFFSET CURRENT = 0.2nA
TOTAL POWER DISSIPATION = 240
W
COMMON MODE REJECTION = 110dB (AMPLIFIER LIMITED)
GAIN BANDWIDTH PRODUCT = 200kHz
OUTPUT NOISE = 85
VP-P 0.1Hz TO 10Hz
= 300
VRMS OVER FULL BANDWIDTH
INPUT RANGE
= 0.03V TO 1.8V
OUTPUT RANGE = 0.03V TO 2.3V
(0.3mV
≤ VIN+ – VIN– ≤ 23mV)
OUTPUTS SINK CURRENT—NO PULL-DOWN RESISTORS
LT2078/79 TA01
APPLICATIONS
U
APPLICATIO S
U
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
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