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參數(shù)資料
| 型號(hào)： | LTKA01CN8 |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大小： | 0K |
| 描述： | IC THERMOCOUPLE AMPLIFIER 8-DIP |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 系列： | LT® |
| 類(lèi)型： | 熱電偶調(diào)節(jié)器 |
| 輸入類(lèi)型： | 電壓 |
| 輸出類(lèi)型： | 熱電偶 |
| 電流 - 電源： | 800µA |
| 安裝類(lèi)型： | 通孔 |
| 封裝/外殼： | 8-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 8-PDIP |
| 包裝： | 管件 |
5
LTK001
001fa
AMPLIFIER (LTKA0x)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Offset Voltage
10
35
V
Input 0ffset Voltage Drift with Temperature
(Note 6)
●
0.3
1.5
V/°C
Input Bias Current
0°C ≤ TA ≤ 70°C
●
± 200
± 600
pA
– 55°C ≤ TA ≤ 125°C
●
± 300
± 1500
pA
Input Bias Current Drift with Temperature
(Note 6)
1
5
pA/°C
lnput 0ffset Current
0°C ≤ TA ≤ 70°C
●
± 100
± 500
pA
– 55°C ≤ TA ≤ 125°C
●
± 200
± 700
pA
lnput Offset Current Drift with Temperature
(Note 6)
●
0.6
4
pA/°C
Large Signal Voltage Gain
RL = 10k
●
400
2000
V/mV
Common Mode Rejection Ratio
VCM = ±13.5V
●
106
130
dB
Power Supply Rejection Ratio
± 2.5V ≤ VS ≤ ± 20V (Note 5)
●
106
125
dB
Common Mode Input Voltage Range
Notes 6, 7
Above V –
0.75
V
Below V+
1.0
V
Output Voltage Swing (Notes 6, 8)
Referred to Supplies
IOUT = 0.1mA
0.8
V
IOUT = 1mA
1.1
V
Supply Current
●
400
800
A
Supply Voltage Range
Total V + to V – Voltage
●
4.5
40
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The inputs of the LTKA0x amplifier are clamped with diodes, so a
differential voltage rating does not apply.
Note 3: Total temperature error is the overall error at 25°C taking into
account the offset of the amplifier, the offset at the compensator 10mV/°C
output, and the error in the compensator divider network. Warmup drift is
not included.
Note 4: Slope error is the increase in total temperature error as ambient
temperature is increased. It is guaranteed by design and by other tests,
but is not tested directly.
Note 5: This is a worst-case limit assuming that any or all supply voltages
change.
Note 6: Guaranteed, but not tested.
Note 7: By referring common mode range to the supplies, the range
referred to ground can be quickly calculated for any given supply voltage.
With a single 5V supply, for instance, which has a worst-case low value of
4.7V, the upper common mode limit is 4.7V – 1V = 3.7V. The lower
common mode limit is 0V + 0.75V = 0.75V. With ±15V supplies, the limits
would be 14V and –14.25V, respectively. Common mode range has a
temperature sensitivity of ≈ 2mV/°C.
Note 8: Absolute output voltage swing is calculated by subtracting the
given limits from actual supply voltage. These limits indicate the point
where offset voltage has changed suddenly by 5V.
Note 9: Temperature error is defined as the deviation from the following
formula:
VOUT = α(T) + α(T – 25°C)2
α = Typical thermocouple Seebeck coefficient as follows,
E = 60.9V/°C, J = 51.7V/°C, K, T = 40.6V/°C, R, S = 5.95V/°C.
α = 10mV/°C at the 10mV output.
= Nonlinearity coefficient built into the LT1025 to help compensate
for the nonlinearities of thermocouples.
= 5.5 x 10 –4, generating
0.34°C bow for 25°C temperature change, and 1.36°C bow for 50°C
change.
Note 10: Temperature error at the individual outputs is the sum of the
10mV/°C output error plus the resistor divider error.
Note 11: Line and load regulation do not take into account the effects of
self-heating. Output changes due to self-heating can be calculated as
follows:
VOUT (Line) = VIN(Iq + Iload)(150°C/W)
VOUT (Load) = (Iload)(VIN)(150°C/W)
= LT1025 supply current
Load regulation is 30A ≤ IO ≤ 1mA for TA ≤ 0°C.
Note 12: Larger errors with type R and S thermocouples are due mostly to
35V offset of the amplifier. This error can be reduced to 5V max with the
LTC
1050 or LTC1052 operational amplifiers.
ELECTRICAL CHARACTERISTICS
The
● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VS = ±15V, VCM = 0V, TJ = 25°C unless otherwise noted.
(Amplifier LTKA0x)
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